Bth magneto problems. Safe riding and all the best.

Bth magneto problems Click Here to view Lucas face cam (magdyno) parts manual. Subscribe To Our Newsletter . The owner had to drill a hole in the mag cowl, very close to the timing cover, for the ht lead to exit, the lead did not line up with the notch in the mag cowl. The coil is aprox 2,5cm (1" for the stubborn US that not able to understand metric) in dia and 3 cm long, I have monted the coil at the fixing point for the headsteady in the frame. 00pm Jul 16, 2014 · Which magneto is it that you are having problems with - is it the magneto in the top photo or the one in the other two? If it is the one in the second photo, and that is photographed on the engine, then I would guess that it is timed too far advanced if the arrow on the flywheel denotes TDC. The new BT-H magneto is designed to make timing your engine as simple as possible. 460051: Either direction: C03: Fitted between the moving-point mounting-block and the back-plate in place of the original insulator plate(s) BTH. Original part No. BTH Components Ltd Ignition Systems for the 21st Century Tel: 01908 550044 email: bthcomponents@gmail. They are sufficiently fatter than the 0. Oct 7, 2018 · There was a Comet in the So Cal section that had a non-standard magneto, I think it was an old BTH. Jul 6, 2018 · HI fellow triumph lovers, a question for you all I am concerned with my BTH magnetos ATD if it is serviceable or not when I fully advance it (wedge) the unit prior to timing it I find it binds up when I tighten up the ATD nut ( although prior to fitting it returns back with its spring tension !!! 4 days ago · Concerning the magneto's and assuming you have already done your homework, the JH or BTH mag will be a good upgrade. Jan 1, 2017 · Not to step on Gregg's prospects and I've heard he does good work but I have used Doug Wood on three magneto's and a Magdyno to my satisfaction. I rectified this and flew the aircraft briefly before the lockdown. £12. 11 carbs. I bought said capacitor and soldered it The BTH KD1 Competition magneto was the standard fitment to competition Norton Internationals and SOHC Manx Nortons. I have a pal who sent his mag to ABSAF for conversion when he bought one of their engines, it is powered by the original 6 volt generator and seems to work very well. Then tighten the nut. The Joe Hunt is a proven unit using good old tractor technology. I have a newly made wiring harness with carefully made connectors etc. Jul 7, 2018 · HI fellow triumph lovers, a question for you all I am concerned with my BTH magnetos ATD if it is serviceable or not when I fully advance it (wedge) the unit prior to timing it I find it binds up when I tighten up the ATD nut ( although prior to fitting it returns back with its spring Most of the work we do involves magnetos as fitted to Veteran, Vintage and Classic machines. Lucas Magnetos; BTH Magnetos; Miller Magnetos; Joe Hunt Magnetos; Competition Magnetos; Racing Magnetos; Armature Testing / Rewound Armatures: We test armatures "Free of Charge" for customers (shipping paid by customer), and offer rewound assemblies, if needed. 00) Out Of Stock. Hi, Can a Magneto guru please tell me the difference between TT BTH and regular BTH Magneto in their make-up, if anything at all. The fitment was straightforward with everything you need supplied in the kit. Jul 29, 2012 · Unlike BTH and Lucas magnetos, the recess in the end cap of the Bosch is deep enough that I could have used a single 0. Maxwell's Equations apply to both in an identical fashion. Then press the ATD onto the magneto shaft with your thumbs. The benefit of the JH is no battery needed versus the new BTH unit. Plugs a lovely tan colour. 5 mm (about 1/4 inch) spark produced at 120RPM. Ask for C1AS/S1. Gents 1951 6T. 00am - 4. The competition versions (identified by a brass plate on its side reading either 'TT Magneto' or 'Dirt Track Magneto' and having the icompetition designate in its serial number) were fitted with platinum points and a manual advance/retard mechanism with a 3 screw inspection cover. Time your engine to the manufacturer’s recommendation. 1377 for KC, BKH, KD and KH magnetos (regrettably not very good quality) Excerpt about BTH KC2 from 1956 Triumph TRW Manual (with good exploded diagrams) BTH KC2 exploded drawing, parts list and US dealer prices. com Copy Write: BTH Components Ltd Oct 10, 2022 · I'd also be really interested to know if there was any special relationship between BTH and Douglas: certainly in the 1920s magnetos numbers in the 800000s seemed to have been set aside for Douglas of various dates, while the other BTH magnetos of the era carried on from 900000, so that the magneto M1-B2 7L927423 seems to have been built a Electronic ignition conversion suitable for Lucas magnetos, BTH, Bosch magnetos, and most other magnetos, 6v & 12v Lucas MO1, K1F, K2F, BTH, MN1E, SR1, Magdyno, N1, KVF, MN2, etc. Banish those hardstarting problems!! Service exchange is available for almost all types of dynamo, magneto or magdyno, or alternatively a large stock is available for outright sale (BTH and Lucas competition models please Apr 16, 2014 · In a standard KV-F magneto, if a plug lead came off by accident, the magneto has a pair of built in safety gap screws that allow for the spark to jump a gap ( about 6 to 8 mm) roughly and straight to the body of the magneto. ikba. All my customers complaining about magneto problems were satisfied once the instrument was completely overhauled. Now the motorbike starts immediately without problems. Originally founded to sell products from the Thomson-Houston Electric Company, it soon became a manufacturer using licences from the American company. ) 2. Oct 31, 2014 · I have recently fitted a BTH magneto to my 1951 series C rapide. 3. Since about 2010, my brother has used them on his ARIEL HS 500 singles in all weathers, both MK I for scrambling and Mk III for road use. £2. 5 micro farad capacitor with 1000v rating and . But it is a real pain to get it started. Have just had the BTH mag reconditioned, new Amal carb, new plugs, leads, rebuilt engine timed correctly. May 27, 2003 · I fitted a BTH mag on my BSA 500 single one year ago, replacing a Boyer Branson electronic ignition which was built into the original mag 15 years previous. If you want magneto repairs - we Dec 5, 2012 · The physics of electrical generation by a generator is identical to that of a magneto. CX1883-G24 etc, as shown in the photo: Either direction: C05 Jul 1, 2021 · So years go by, I get a twin running , and order another BTH, figuring BTH things had gotten to a higher standard, and all of the happiness reported here on forum. My reconditioned magneto is up and running now in my 55 Bullet and I’m pleased to say it’s performing very well. so far so good bike fires up first boot revs cleanly which it didnt some times do with a magneto fitted THE KD1 BT-H Electronic Magneto Fitting Instructions 1. By "ordinary use" I mean everything other than all-out racing at places like the Isle of Man or Bonneville. Bth Self Generating base or flange mounted units are suitable as a new installation or replacement for the the original magneto on a wide range of Call us: (01234) 751960 - 07546 379540 | Monday to Friday - 9. Spreadbury describes how a generator/magneto that is to be disassembled in the field without the possibility of remagnetizing it has to be overdesigned if it is to still function, albeit at reduced output, to compensate for the loss of magnetism when Mar 8, 2024 · model number TYPE K. Either way a very unusual find. Combined lighting/ignition Types PBK & PBM (A&B). Apr 1, 2014 · SRM and ABSAF have units that fit into the mag body to give you electronic ignition. Never had any problems, even with the scramber being breifly submerged under water. Getting to grips with my recently restored coil winding machine and complet Nov 2, 2021 · I run my Joe Hunt maggie without a AAU on my Norton for near 10 years now and have never had any problems, starts on one kick every time, first kick for the day is one big swing on the kicker after that for the rest of the day only needs 1/2 swing on the kicker to fire up, it idles great, will run great at low, mid to full revs, even ran a JH on my old Triumph without a AAU and same thing Oct 16, 2024 · Edited, italics No problem with exchanging these. 13. €1,148. BTH Magneto 1927 to 1928 Instr. The problem is that there just aren't that many magneto specialists around anymore. Reliable sources of the rather peculiar oil seals found in some magnetos are regrettably hard to find. If you have any questions about motorcycle magneto services, please contact us for May 27, 2003 · I fitted a BTH mag on my BSA 500 single one year ago, replacing a Boyer Branson electronic ignition which was built into the original mag 15 years previous. Nov 15, 2007 · As far as I know this magneto was the only magneto fitted with this casting, it being almost a mirror image of the casting fitted to a Lucas NR1 magneto. Jan 14, 2017 · When fitting a 334-1278 rear mounted mag to a pre-unit twin to replace a Lucas K2F or a BTH magneto, installation and timing is exactly as noted in your service manual, as the 334-1278 is a direct replacement for the original magneto. Insert the 6mm stainless timing rod into the Heat and vibration are other causes. As Bosch had a factory in New York at one time you might be able to find a Bosch ZA-2 more easily, and they are VERY nice Hi, I have a problem with my condensor in the BTH Mag, its the common one, works when cold doesnt start when hot. I found the BTH mag easy to fit and very easy to set the timing accuratly. Genuine Triumph Pre-Unit Parts. When in doubt, please contact BCS with exact details on the motorcycle for assistance. Nov 20, 2021 · I got home OK but when I went to kick the motor over with the discharged battery it would not fire up and upon checking the plugs there was no spark so I charged up the battery, got a good spark and the engine fired up straight away - so my question is this - the ignition is running on a BTH magneto with a CDI unit strapped on for a Vincent Dec 27, 2011 · Problems included a broken slip ring held together with silicone bathtub sealant; two coils wound with insulator too thin to stop internal arcing; excess epoxy holding the condensor, resulting in the coil being epxied to the endcap making nondestructive disassembly nearly impossible; machining grooves on the ground ring that were so deep that Our extensive Parts List covers all the common Lucas, BTH and Miller Magnetos and Dynamos, and also some of the more obscure ones! We also supply JG Electronic Regulators, Magneto Timing Detectors, ATDs, Cam Rings, and offer Coil Rewinding. Checked it over and found no spark. Most modern sealed type HT coils don't have this feature, that I'm aware of, so damage could occur. Any problems with the armature will show up as an intermittent or even failing spark. Aug 30, 2023 · Hi Mates just bought a '55 alloy T100 Twin Triumph, it's running erratic, it has a TT BTH magneto ( KC 2?), just rebuilt the carby, still the same It starts regularly but not easy , and often cutting on tick over , took it for a spin went not too bad but started missing a bit en-rou Magneto BTH éléctronique Magdyno. This new unit will enable you to enjoy the advantages of advances in electronics combined with the self-contained convenience of a traditional magneto. Reference BTH-MD1R. About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright Magnetos Alton Generators Magneto Accessories Fitting Instructions. The mechanism responsible is called 'sputtering', and if the oscillations don't average out the average direction of the electric field during the discharge determines which way the atoms ripped from the points by the discharge travel Magneto Tips Forward: this document is intended as a simple guide containing tips for the servicing and maintenance of Lucas and BTH magnetos – both makes being basically of the same design. Heat and vibration are other causes. Tax included Quantity Add to cart You might also like Most of the work we do involves magnetos as fitted to Veteran, Vintage and Classic machines. Mar 31, 2018 · My understanding is the BTH electronic mag counts the delay between pulses to determine RPM. Aero 448 449 648 649 Magneto; Aero AE Magneto Manual; Aero Magneto Catalog 1925; Dixie 235 Oscillating Magneto; Dixie 40 42 and 44 Magneto Manual N-404A 1919; Dixie 46 Magneto Manual N-403C 1919; Dixie 8 Cylinder Magnetos #83-86; Dixie Aero Service Info; Dixie Magneto Model 60 and 63 Catalog 1915; Dixie Splitdorf Magneto Catalog N-401 Apr 8, 2023 · My 1947 Manx 350 engine is supposed to run a BTH KD1 Mag, but is fitted with a Lucas Magdyno. If your magneto is not here, or you are not sure, please call us to find out, or email a photo of the magneto. Turn the magneto shaft until the engraved arrow on the end of the shaft is pointing down towards the base (figure 1. Customers include individual owners, collectors, companies, shops and museums from all over the world. 46 -0. We do our best to keep all the magnetos we have listed in . The magneto depicted is not the one you receive. However, we are able to offer oils seals to fit Lucas K1FC and K2FC magnetos, and also later versions of the Lucas K1F, K2F and KVF magnetos having an E18 bearing at the drive end. Untighten the magneto :- - Remove the timing cover, - Undo the magneto armature nut in the centre of the timing unit. Apr 25, 2017 · The kill wire is not essential so if you think it might be causing a problem snip it off leaving a short (well insulated) piece so you can restore the kill wire if that is not the cause of a problem. I knew something was fishy when I saw the clutch cover. I am not sure if the 1946/49 GP used the same crankcases as the pre war Speedtwin & T100 based twins but that was specified as a BTH magneto. Click Here to view KF Lucas parts manual. The PAL is interesting but has been promised on a parts trade o a friend in Australia who has an early ESO that needs spark. It is running a brand new 9:1 piston, with platinum NGK spark Magnetos All models of Lucas and BTH magnetos can be reconditioned to as new condition and this also now includes Magdynos. Nov 11, 2024 · "Or, I can buy one of those electronic ignition magneto's I've seen (like a new BTH from the UK), but I like the option of not having to rely on a battery" The BTH, ARD, Joe Hunt magnetos do not require a battery to operate. Manual & Wiring diagrams. BTH motorcycle magneto KCI-C4 for single cylinder I have replaced the aging BTH magneto in my 500cc T100 engined TRIBSA with the Trispark magneto replacement kit. Contrary to popular belief, Lucas and BTH made quality instruments and most mags fail either through not having been serv iced properly, or though age alone. Seem to remember he went back to a conventional magneto. I did notice a very small spark between the contact b Hi Mates just bought a '55 alloy T100 Twin Triumph, it's running erratic, it has a TT BTH magneto ( KC 2?), just rebuilt the carby, still the same It starts regularly but not easy , and often cutting on tick over , took it for a spin went not too bad but started missing a bit en-rou Hi Mates just bought a '55 alloy T100 Twin Triumph, it's running erratic, it has a TT BTH magneto ( KC 2?), just rebuilt the carby, still the same It starts regularly but not easy , and often cutting on tick over , took it for a spin went not too bad but started missing a bit en-rou Hi Mates just bought a '55 alloy T100 Twin Triumph, it's running erratic, it has a TT BTH magneto ( KC 2?), just rebuilt the carby, still the same It starts regularly but not easy , and often cutting on tick over , took it for a spin went not too bad but started missing a bit en-rou Dec 5, 2012 · The physics of electrical generation by a generator is identical to that of a magneto. The Alton alternator is a good upgrade as well and I think they have worked some issues out concerning oil seals etc. Upgrade to modern, reliable, electronic sparks! Comes standard with a 35mm spindle height; add a base plate for applications that require a 45mm spindle height. Treat yourself to a new BTH MK2 Vincent Electronic Magneto. 25% accuracy. Two BTH dirt track mags, a SEM from Sweden and a PAL which I believe is ESO from Czechoslovakia. Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. CRYPTO/2146 £5. Spreadbury describes how a generator/magneto that is to be disassembled in the field without the possibility of remagnetizing it has to be overdesigned if it is to still function, albeit at reduced output, to compensate for the loss of magnetism when Sep 23, 2013 · Thanks you all for your help, the problem has been resolved replacing magneto coil; maybe was bad rewounded and it has been removed "easycap" in stead of a traditional capacitor. Looking into the issue it looks like the forward cylinder spark is very intermittent although the rear is sparking well. 00 (Inc £660. It would seem to be fairly straight forward and I'm working from the Triumph Instruction Manual No. All went well and after fitting the bike started easily, however after a few rides out over short distances the bike became more and more difficult to start. Suitable for both single and twin cylinder bikes. 1-AG4 no 2D125010 If sloppy, consider fitting a new moving point (Lucas), bush (BTH), or pivot post. POSTAL ADDRESS Unit 2, Charity NOW SOLD BTH MC2 AW4 180 degree Magneto horizontal twin vintage Scott TT Replica or Douglas motorcycles C. That's why Lucas bought them, they couldn't stand the competition. Pick-up brushes of the highest quality are also available, of the correct grade to avoid carbon deposits on the slip ring. I bought said capacitor and soldered it Aug 10, 2013 · The magneto turns backwards in relation to the crankshaft. Insert a small block between the projections of the front plate and the back plate on the timing unit to wedge them apart. Doug will work on BTH and Lucas where as Bill only works on Jun 1, 2021 · I've had a BT-H magneto on my Rapide since I built and used it with the mag cowl fitted. You'll have to look out for a magneto and the original clutch cover as well. 719 likes. We now have new castings for two types of BTH bearing/cam housings available to satisfy this demand. We also have kits for more unusual magnetos, such as the BTH, ML, Magnetos France, Morel, Lucas wader, Lucas KVF, etc. 4 days ago · Guy called "Humbernut" on the forum www. Feb 9, 2014 · BTH Components Ltd Ignition systems for the 21st century NOTE: All covers are sealed and the screws secured with loctite. Quite straightforward as long as a replacement bearing/cam housing is available. One of the most important test of a magneto is does it perform well at very low speed i. This includes all types of Stationary Engines, Tractors, Boats, Motorcycles and Cars ranging from the most simple generator sets through to exotic racing machinery. 082 uF that they can't be used in BTH and Lucas magnetos, so two of the smaller ones have to be connected in parallel instead Dec 27, 2024 · "Or, I can buy one of those electronic ignition magneto's I've seen (like a new BTH from the UK), but I like the option of not having to rely on a battery" The BTH, ARD, Joe Hunt magnetos do not require a battery to operate. Jul 1, 2013 · I have to correct you there Rickman, for the new selfgenerating electronic magnetos offered by BTH there is tiny miniature coil. 00 Dec 18, 2020 · I have modern BTH magneto on a series C Black Shadow. Most of the work we do involves magnetos as fitted to Veteran, Vintage and Classic machines. 12 volt machines: 12V pazon Ignition (suitable for twin or single cylinder machines) Magneto replacement body Pick-up for BTH magneto. · A very distinctive screw on end cap with six breather holes spaced evenly around a central hump. DO NOT REMOVE magneto body on the other side 1. D. The most common problem with original magnetos is failure once hot. Velocette BTH “TT” Magneto, Lucas, Professionally Rebuilt in the USA *Photo is representative. When it is very low at kickstart speed it sets itself timing wise to a predetermined figure x degrees retarded from the 34 degrees advance that you timed the bike to. CROFT/2733 £3. Hi, I have a problem with my condensor in the BTH Mag, its the common one, works when cold doesnt start when hot. The spindle height for a Manx is 45mmbut some magnetos are 35mm, so if you obtain one which is 35mm you will require a 10mm packer under the magneto. If you have mag problems try the following: Somewhere in the cap of mag there is the contact (usually a coal block) for cut out. KC1, KC2, KD1, KD2 (ring cam) Brass - BTH part No. Bt-h components ltd. Set the plug gaps to 0. Is my googling correct that a BTH is a Magneto designed for 4000RPM + running for long periods and if so how or what was the change. BTH Automatic Timing Device to Magneto (NOS) – Triumph 3T/5T/T100/6T/TRW Jan 1, 2017 · Not to step on Gregg's prospects and I've heard he does good work but I have used Doug Wood on three magneto's and a Magdyno to my satisfaction. BTH motorcycle magneto KCI-C4 for single cylinder Bth magneto for sale Vintage bth kc2: 62. If the coil has been in service since the magneto was new there is a good chance the insulation has started to break down, allowing voltage to track. 410600. For magnetos types M1 M2 MC1 and MC2. However, any mag needs rebuilding by a competent magneto shop once every 10 years. BTH Magneto Parts. I sent it to a company called Ribblesdale automotive on the recommendation of a friend. Jun 29, 2012 · Hi HowardA suitable magneto would be a BTH TTmag. These were used on the Manx up until the mid 1950s or you could use one of the Lucas competition mags such as the KNR1 or KNC1. I used Bill Bowers in Tacoma. e. [3/8 BSF]. UK-made BTH PM1R base-mount magneto suitable for Ariel, BSA and Matchless pre-unit singles (and others using an anti-clockwise mag). Genuine NOS Parts. Obviously, in my quest to retore this machine to some semblance of originality I am looking for a KD1 Magneto to replace it. I tested the HT wire and spark plug and both are fine. And it was getting worse. No problems during the 50,000 + miles I've completed and it has been used in all weathers, hot, cold,and also wet. This twin BTH magneto has a "shielded" ground wire. , and for cars. Nov 18, 2023 · I have no previous experience with pre-units and a magneto ignition is also a new experience. Updated 10/25/06, MSA At last !! A dedicated magneto repair shop. If you want magneto repairs - we Is your multi-plate clutch grabby? We stock a replacement dished steel plate that will cure this problem. co. Tired of that weak magneto. Do you rotate the points backwards until they just start to release the paper. These were fitted with special adaptors with metal to metal contact and they certainly became quite warm after a run. Thanks you for your advices Lorenzo May 31, 2010 · The factory had cashflow problems for decades and would fit electrical equipment from whichever manufacturer would give them credit! Over the years magnetos from Dixie, Fellowes, EIC,Lucas,BT-H,Bosch, etc. Fit the plug leads and plugs and make sure the bodies of the plugs are contacting the metal of the vice or the magneto body. Mar 11, 2020 · It is possible to sort one out with a milling machine and an alloy spacer plate, the castings still have provision for the magneto strap, but I don’t have the kit or the skills. Shame, because a Lucas N1C or BTH KD1-TT competition mag would look rather nice in there. Refit the fuel tank, check all fasteners and wiring for security. Lucas K series, M01s, N1s are usually fine, and can have their armatures taken out without losing a lot. Jun 22, 2007 · • The BTH mag is one of the best ever made. The only thing to be aware of is the original BTH AA has a slightly lower advance limit, about 3 deg lower than the Lucas you have fitted, (which suits the 6T model best). Fit two nuts to the drive shaft and lock them together. Safe riding and all the best. Acorn nut and washer for Lucas magneto pick-up. If earthing might be causing a problem Davidd's photograph of his magneto shows how simple it is to put on a good earth. Feb 2, 2021 · It is only a suggestion, but visually it is very difficult to see the spark emitted from the BTH Magneto, quite different from the big fat blue spark that we are used to seeing from a good Lucas Magneto, I have no idea why this is, but I can say that even if the spark is hard to see, they normally work very well. I wouldn't say it has bright blue sparks, but I can see the sparks when I turn it over just by hand. Mar 17, 2022 · I’m pleased that I was able to help you with the post I made re the magneto. I missed one on e-bay (auction already closed), in full working order and a good healthy spark, which went for £230! Bargain. 00. If you want magneto repairs - we M-L Magneto with face cam: Lucas part No. To order, please visit our online shop. If you want magneto repairs - we BTH TT Magneto KA2-1 model vintage Scott TT Replica or Douglas motorcycles – SOLD. 018 - 0. Works well so far, but have only covered about 300 miles so far. I pulled my B34 out after the winter and could not get it started. Doug will work on BTH and Lucas where as Bill only works on BTH TT Magneto KA2-1 model vintage Scott TT Replica or Douglas motorcycles – SOLD. The engine will start from cold, then run for a short while, and a misfire will develop, causing the engine to stop. 00 £ | Lucas bosch bth: 20. Both have been serviced and bench test well but one has a damaged t Jun 10, 2012 · So I've a foot in both camps and have had my share of mag problems over the yearswith then, an accumulated pile of older magnetos, parts etc, I used to rebuild, no that's not the word. FM1R BTH Flange Mounted Magneto. Whether that simplifies or confuses I'm not sure! Somewhere between £660 and £720 beer vouchers plus transport by the look of it. If you have the old mag then I see no good reason why you shouldn't just get it rebuilt by someone with a good reputation (Doug Wood in PA has already been mentioned). £550. Open Monday - Friday 7:30am-4:30pm Pacific Time Most of the work we do involves magnetos as fitted to Veteran, Vintage and Classic machines. BTH Instruction Book No. Out of Stock. Replaces the magneto with a high quality Pazon Sure Fire ignition. Most problems with magnetos occur when they get out of phase (the spark arrives to early or to late) – which is very easy to adjust with the right specifications. TritonThrasher on this board can fill you May 5, 2012 · The stash of parts I have has four magnetos in stock. uk fitted one to a Velo IIRC and had all sorts of problems. 00 May 11, 2020 · Credit – Brightspark Magnetos Ltd. The Speed Twin runs off a magneto (Lucas or sometimes BTH) and not an alternator. 020" (0. Jun 18, 2009 · Art, hold the magneto in a vice. Turn the shaft so the centre dot / arrow on shaft is at the bottom Aug 31, 2015 · As auto-magneto production was little more than a sideline for BTH and as most of its magnetos were destined for the higher planes of industry and aircraft, its motorcycle instruments could hardly demonstrate compromise. DIY Magneto Maintenance and Troubleshooting A fair amount maintenance and troubleshooting of a magneto can be done with the magneto in situ and without any special tools or equipment other than a multimeter. with the performance of the magneto. 2. BENNER/1288 £3. Jan 2, 2015 · Guy called "Humbernut" on the forum www. Aug 31, 2015 · As auto-magneto production was little more than a sideline for BTH and as most of its magnetos were destined for the higher planes of industry and aircraft, its motorcycle instruments could hardly demonstrate compromise. Tired of a kicking your Vincent until you feel you are going to have a heart attack. A correctly fitted new BTH magneto will solve ignition problems but here are a few things that our customers told us that our magnetos did not solve: Tight tappets, exhaust push-rod out, carburettor jets wrong, different length needles in twin carburettors, not enough petrol in the tank, plug leads on the wrong cylinders, timed on the wrong Sep 1, 2009 · Hot starting problems Having suffered hot starting problems with a 'rebuilt' Lucas magneto I am considering the BT-H route. The SRM conversion can be done by the owner, I am not sure about the ABSAF unit. The BTH magneto on this machine has an auto advance which must be fitted on the magneto"s tapered shaft with everything in proper position. Bill BTH Magnetos Ltd. After loosening, the nut will tighten and begin to withdraw the timing unit from the armature. Check the state of the heel of the moving-point assembly. Runs great, good acceleration and power, no flat spots. 60 Add Jun 29, 2022 · I have a pair of new (made in 1936 but never used) BTH KC2 magnetos for a JAP J99 engine. 00 Jul 8, 2013 · Hey Richard,had a good chat with Peter at BTH,nice fella but couldn't really offer any practical help,what he did do was get in touch with Tony for me who in turn got in touch with me,delightful fella,seems to know exactly what the problem is,he invited me around and he is going to fix it and test it for me,bonus too as he only lives 1/2 hour Magneto Tips Forward: this document is intended as a simple guide containing tips for the servicing and maintenance of Lucas and BTH magnetos – both makes being basically of the same design. If excessively worn, replace the heel (BTH), or the moving-point assembly (Lucas). Electronic ignition k it in the photo is for a Lucas K2F magneto, all other Lucas models are available, as well as BTH etc. MAGNETOS. How to service the BTH magneto NEW (From Motor Cycling, 14 November 1940) Sep 2, 2021 · Last year I had problems with the BTH magneto on my Gipsy major. IT HAS SPARKS. Follow the easy installation steps below and enjoy your motor We also sell our Brightspark range of specially-selected, top-quality, British-made slip rings and pick-ups for Lucas and BTH magnetos. 5 mm). Entire unit fits under a stock magneto cover. I initially thought the problem was heat transference back to my Mk. Electrical Parts. Congratulations on buying a new BT-H magneto. By the 1930s the familiar magneto was approaching a plateau of efficiency, beyond which it has not much advanced since. Out of stock. BTH Magento Cam Ring (NOS) – Triumph TRW/3T/5T/T100 £ 49. HI fellow triumph lovers, a question for you all I am concerned with my BTH magnetos ATD if it is serviceable or not when I fully advance it (wedge) the unit prior to timing it I find it binds up when I tighten up the ATD nut ( although prior to fitting it returns back with its spring tension !!! Sounds big enough. This BTH is also in a box with the twin running a stock Lucas magneto. Notice I didn't say Brit Bike repair shop, because most shops these days have never ever even seen a magneto, much less a BTH. Just to try someone local, the KNR1 for my G85 upon recommendation from a renoun engine builder on Vashon Is. This web publication contains 166,834 pages of information and 246,603 images on early companies, their products and the people who designed and built them. Any horseshoe magnet, most or all BTH magnetos and many others should never have their armature removed without a keeper. Read More. A quick note after a hasty inspection of the photographs. 18 uF capacitor from the same Panasonic family instead. Set your timing using a degree disk or by measuring the piston distance before T. THE PM1R & PM2R BT-H Electronic Magneto Fitting Instructions 1. You will need a variable speed reversing drill and a socket to fit the nuts. Phone 530/878-0700. 17. 00 £ Anyway - if a magneto is serviced well it should work for a long time. So is a Lucas K1F or BTH KC1 flange-mounted magneto an option? May 9, 2010 · I was hoping that some of the experts might help me with a magneto problem. If you want magneto repairs - we May 11, 2010 · Hi, I have a problem with my condensor in the BTH Mag, its the common one, works when cold doesnt start when hot. BTH make magnetos in a variety of shapes and sizes and I ordered a 50 degree, base-mounted, anti-clockwise rotation, 45mm spindle height self-generating magneto to replace the 50 degree BTH magneto that I had originally fitted. I am not the one to ask as far as technical requirements for re-magnetizing the magneto, though. What then, is an alternator coil doing on the clutch cover. British Thomson-Houston (BTH) was a British engineering and heavy industrial company, based at Rugby, Warwickshire, England. Platform single magneto is available in 35mm or 45mm centre height by the addition of a 10mm plateNote : The base holes are 6mm and not 1/4 to assist our overseas customersPrice subject to vat £550. If in doubt, the model of the magneto is normally stamped on the mounting flange. 99 +VAT if applicable K1F, K2F & BTH Electronic ignition magneto replacement kit. · Hexagonal competition bolts with wiring holes, as fitted to other Lucas competition magnetos. , all were fitted. 00 £ | Original vintage bth: 55. Sep 11, 2015 · Looking at the various parts lists for pre war and immediate post war triumph twins, there were options for a BTH magneto. SKC87159G1. So I checked the web and found that I needed a 1. I don't recall the issue but some perceived problem. C. The bike has been difficult to start and I wanted to take advantage of available technology. 1930. Then check that the timing is correct, by rotating the crankshaft slowly forward until the points just start to release the paper. STAY IN TOUCH. It took them 9 weeks to do the job and on its return the points came loose on the first start. We specialize in repairs and upgrades to:- VERTEX; MALLORY; MSD . Timing by degree disc 37 BTDC on both pots. Jan 26, 2019 · That's true, but the limitation on the physical size of magneto condensers is such that I've never seen the issue arise in other than battery ignition systems. 18 Add to cart; BTH Magneto 1927 to 1928 Instruction Manual for magneto types M1 and M2 only. Mar 24, 2015 · Gents 1951 6T. when starting a motorcycle. We specialise in renovating the LUCAS K2F and K2FC magneto fitted to twins and the LUCAS M01 Magneto (Magdyno) fitted to the single-cylinder engines. Lucas and BTH specified that there should be a 5. I bought said capacitor and soldered it The original coil may be reusable, although it is susceptible to faults - as described in our section: common problems on magnetos. What does BT-H do? BT-H manufactures & supplies British made electronic magnetos to start first kick Apr 5, 2013 · I have a problem at the moment, having fitted a new Amal pre-monobloc and a new BTH twin spark magneto to my Comet, having finally got the bike started yesterday after a winter restoration I am struggling like hell to get it started. I bought said capacitor and soldered it Platform single magneto is available in 35mm or 45mm centre height by the addition of a 10mm plateNote : The base holes are 6mm and not 1/4 to assist our overseas customersPrice subject to vat £550. * *Note: These magnetos are listed as out of stock as they require more information to make sure the magneto is correct for the application. T. Oct 13, 2022 · 13 reasons why your motorcycle won t start and how to fix it habit bad stator symptoms tell if is test charging system a comprehensive guide motofomo steps take when Oct 14, 2013 · As I also have a Podtronics reg/rec I shouldnt have any problems powering the Boyer, unlike the A10 it was originally fitted to with just a 12v converted dynamo. H magneto for a vintage Velocette motorcycle. This conversion is commonly requested for BTH magnetos but the necessary housings are in short supply. This post was prompted by discussions of alternative ignition systems for "ordinary use" of Gold Stars, including non-Lucas or BTH magnetos as well as replacing the magneto entirely with one of several aftermarket battery-powered systems. That’s the great thing about these forums and I have found them a big help myself when looking for information and advice. Turn the shaft so the centre dot/ arrow on shaft Dec 31, 2020 · The rewind and restoration of a B. GET IN TOUCH Tel: (01234) 751960 - 07546 379540 Email: [email protected] TRADING ADDRESS BTH Magneto Parts. Remove your old magneto and replace it with your new BT-H unit. 89 Add to cart; BTH Magneto 1931 Instruction Manual. 50. I use to pull them apart and re-assemble them with whatever I had to get a good spark and my sole criteria for a "good" magneto was one that you could rock the armature back and forth and a nice fat blue Jun 29, 2011 · Re: BTH magneto advance/retard unit « Reply #1 on: June 29, 2011, 10:06:42 PM » Back in the 60's the BTH was a prized possession on any bike, now if the bike needs a mag as long as you can get a good one, as they are so hard to get in really good condition. May 1, 2017 · Not the same company as the old BTH who made magnetos and much besides - although I notice they've used some of the model numbering. etc. . twwag tfp rvorrt vmrtg pmfpqtn gyhdt ctehvc jhxnavy ydon xusy