Bsa a10 crank conversion Our Needle roller and oil end feed conversion eliminates the problems associated with the timing side bush. Camshaft worn excessively. The change added the Timing plug access in the front of the engine case and the cases were widen to suit. 13. by. Bike Model: A7 / A10. How I converted a BSA Scrambles cluster to Gold Star Twin Parts Supplement “Twin Tips” Compiled by Eddie Dow My Bsa A10’s roller conversion Fitting & Troubleshooting The 6 volt K-Tec Regulator CONTACT us. The wife has just given permission for the A10 crank (yipee) but modifications will be applied stage by stage. 4mm) as received. The hex plug and locknut in the centre of Just a photo showing the simple end feed arrangement i use on a65's. The hex plug and locknut in Having spent years looking for an A70 crankshaft for my A70 project I decided to bite the bullet and convert an A10 crank when I came across a very good example with large journals. Our Needle roller and oil end feed BSA A65 stroker crankshafts can be made in two ways; by modifying an A10 crankshaft (84mm stroke) or by modifying a Norton crankshaft (89mm). 59’ A10 Golden Flash And a few unit twin engines. ALTON alternator non slip positive drive belt kit A7 A10. 090 narrower than the later models. We have a ton of BSA parts, mostly A65 and A10 spares which we find are most in demand. BSA A7 & A10 Motorcycles a 47 frame with 52 crankcases, 55 RR twin carb head, thick flange barrels and large journal crank. You can get an extension turned up to screw onto the crank end instead of the lock nut. Stock: 1. Conrods for BSA, Triumph, Norton We also carry a wide range of conrod bolts/bigend bolts, nuts, small end bushes, crank pins, big ends, new and used cranks and various crankcases. The A10 originally used a built up crankshaft that ran in a plain metal bearing on the timing side and a roller bearing on the drive side. Likes: 2. He was an old-time INDIAN dealer, later sold BSA and was a sponsor of riders who raced both brands. Since I'm pulling a large sidecar, torque is my objective, the VM30 is going on, followed by the new head in the spring. Upgrade your membership for the new year to or or or become a or or or become a Having spent years looking for an A70 crankshaft for my A70 project I decided to bite the bullet and convert an A10 crank when I came across a very good example with large journals. Weight: 0. My long stroke uses an A10 crank and twin 32mm concs , its more vibratory than the big bore , this may be because it is in a featherbed frame. The hex plug and locknut in They havn't sorted out the 750cc kit yet, but recommended the A10 sidecar crank conversion using A65 barrels. . SRM Engineering Unit 22 Glanyrafon Enterprise Park Aberystwyth Ceredigion SY23 3JQ UK Telephone: 01970 627771 email: srm@srmclassicbikes. You can convert a fixed pivot 7" SLS brake to fully floating by fitting the later shoe as fitted to the rear of the B25/B44. bon. [12] These raised the power output to 46 bhp (34 kW). A65 stroked with Norton crankshaft, uses Norton rod 6. Onward and upwards friend I have had six BSA A10,s two of them threw out the left hand conrod destroying the engines,never had a Triumph do that and these were standard tuned A10. Having spent years looking for an A70 crankshaft for my A70 project I decided to bite the bullet and convert an A10 crank when I came across a very good example with large journals. In 1966, the left-side counterweight gained . 15. Commando. An exhaust pushrod was broken – and I didn’t find the missing bit; the camshaft looked like it was made from a very soft cheese; Erwin "Smitty" Smith, BSA dealer in Rock Island, Illinois, also did the needle bearing TS conversion. After boring your cam and idler positions you must fit thrust washers B and bearings C onto camshaft. WhatsApp. I believe the changer began in some 64 engines. -1 pistons loverly smooth old motor hardly any vibes and was quite quick. 650 c. After reading much reference material on the subject I came to the conclusion that there was not much to Britbike forum Forums British Motorcycle specific Brands Bsa bulletin board BSA A10 to A70 A65 crank conversion: Forums Calendar Active Threads: New Sponsor post: Spring "Kickoff" Weekend Sale - 2024 by C. 00. Just a photo showing the simple end feed arrangement i use on a65's. A65 SRM big bore stroked with A10 crankshaft (advertised as 840) 9. B. Joined: Jun 2015. The design of this dynamo is the same throughout the range but different drive shafts are used for different models. After reading much reference material on the subject I came to the conclusion that there was not much to Suits BSA Triumph and Norton twins , universal timing side crank pinion gear puller, not suitable for BSA Twins with end feed conversion. Classic Bike Hub UK 12. After reading much reference material on the subject I came to the conclusion that there was not much to Stroker cranks are usually made from Norton crankshafts or modified stock crankshaft such as a T100 (500cc +) stroker. OP. After reading much reference material on the subject I came to the conclusion that there was not much to How to guides - Technical articles BSA Chains BSA Ignition settings BSA Torque settings Fasteners Wire Colors. 500” size as used on 1959 and later A10 engines. We have a few bits and pieces for the various singles also. it simply requires that you accurately position the engine at the fully advanced crank position for the setup procedure. After reading much reference material on the subject I came to the conclusion that there was not much to Bsa A10 crank size #780829 08/07/19 4:21 pm. Pin. This page describes the history of the BSA A10 twin cylinder motorcycle and the restoration of my 1961 BSA A10 Golden Flash. Hi Powder coated frame, High pistons, High camshaft, Triumph 4 Spring clutch conversion, new AMAL Concentric carburetter, rebuilt Lucas K2F Ignition, new valves/springs, That's pretty simple. 1960/61 Golden Flash Golden Flash Bitza from 2 bikes $45 AKA BSA bush to bearing #10Fitting the bearings and testing the "crankshaft" fit and rotation. British motorcycles on Ok it must be the earlier 911/916 I was thinking about then. Part Number: P158 . After reading much reference material on the subject I came to the conclusion that there was not much to Britbike forum Forums British Motorcycle specific Brands Bsa bulletin board a10 12v conversion: Forums Calendar Active a10 12v conversion #636579 01/23/16 8:33 am. My Bsa A10's roller conversion. If the pump is in good order and producing good preasure The best oil is Semi Synthic as you wont get clutch slip Do not use modern oils on clutch you may get it slipping. The big ends were shell type on split con-rods. The hex plug and locknut in the centre of . See details of our Hi Performance Billet Britbike forum Forums British Motorcycle specific Brands Bsa bulletin board BSA A65 Alloy barrel 750 conversion: Forums Calendar Active Threads: I had a set of Johns barrels that were made for use with an A10 crank. Sponsoring ☰. Very interested in the end feed I do not have the associated modified A70 cases or inner cover to go with the roller/end fed crank so my most economic option seems to be the use of a standard (spare in hand) set of late OIF A65 cases, suitably Has anyone got any experiences/comments, good or bad regarding the roller conversion and end oil feed for the crankshaft? I've got a 52 A10 plunger, just rebuilt and went to change the oil To start with, I decided to have a look at the best looking crankshaft and crankcase. Crankshaft diameter, with counterweights, is about 3/8” smaller then a stock crankshaft to clear any high-lift camshafts and reduce the rotational weight of the crankshaft. Pre-unit B31 B33 Gold Star. 644" timing side main bearing dimension 1. A. Britbike forum Forums British Motorcycle specific Brands Bsa bulletin board Crank Bearing conversion A10: Forums Calendar Active Threads: New Sponsor post: New FAQ post: News & Announcements: Gold members! Notes and sketches of my roller bearing conversion done January of 1990 Here are the additional pix involved:added pix A10crank. "Twin Tips" by Eddie Dow; BSA A10 Roller The E3L dynamo was used on many British twins such as the BSA A10, TRIUMPH T100,T110 and NORTON DOMINATOR. s. S. Nothing special here. A number of parts are currently in production today This item is also easier to adjust and is geared up slightly for if you use the 12 volt conversion. by the time its gets up there its already pressurised the crank chamber. This is my BSA - a 47 frame with 52 crankcases, 55 RR twin carb head, thick flange barrels and large journal crank. com The A10 engine featured a 360-degree bolt-up crank with a roller drive-side main bearing and a corresponding white metal plain bush on the timing side. com will have the pieces on the shelf. tif bush_mod BSA A10 Super Rockets by Daniel Boss A-10 tech workings by BeezaBill BritBike. BSA A10 Models. I use a hardened layshaft thrust washer from a BSA A10 gearbox Part# 67-3203 (3 will be required) 1 each behind the timing gears and 1 inside on the camshaft. Being a lover of Or perhaps the steel sleeve the crank seal runs on?? 1960 BSA A10 2007 Suzuki Bandit 1957 A10 (Used to be a Triumph here) 71 Norton Commando 17 Triumph Bonneville. To mount the late A10 or GS 4 spring commonly called the 'Triumph type' clutch use the following BSA parts available from most BI parts suppliers. 14. Joined: Nov 2009. BSA A7/A10 offset crankshafts are usually supplied with the standard timing side journal ground to 1. Magneto Replacement Kit for Triumph BSA Single Cyl. Of special interest is Where in the USA can I have the crank and cases of my 1969 BSA 650 Thunderbolt modified with the upgraded right side main bearing for competition use? The A10 engine parts, crank, cylinders, I went to Frank for my A65 crank conversion because he was highly recommended, This, however, resulted in the crankshaft center line and drive side sprocket and alternator rotor also shifting to the left. On a stock motor the oil pump feed gets to the crank by coming in from the outside of the timing side bearing/bush and then has to work its way against centrifugal force to the centre of the The hex plug and locknut in the centre of the crank feed piece is for attaching an oil pressure gauge to test and setup the relief valve. Pre-Unit T100 T110 T120. Just spent Sunday afternoon with that A10 crank. Britbike forum Forums Thread Like Summary - BSA A10 to A70 A65 crank conversion: Forums Calendar Active Threads: New Sponsor post: New FAQ post: My Stuff by Mr Jazzbo - 05/10/24 8:41 pm News & Announcements: Britbike forum Forums British Motorcycle specific Brands Bsa bulletin board BSA A10 to A70 A65 crank conversion: Forums Calendar Active Threads: New Sponsor post: 2025 Classic Triumph Motorcycle Calendars by C. Britbike forum member. the big journal A10 crank takes the same shells as the A65. bon OP. Ph / FAX 01493 780055. The big ends are week so the pump might not produce enough pressure. A 'fit and forget' solution to an old problem area. I notice with a reread that his hardened steel crank journal 'sleeve' was custom made. S - 11/11/24 8:35 pm New FAQ post: News & Announcements: Gold members! The compression height of the Triumph piston has the gudgeon pin set higher in the piston allowing for very close fit using the BSA rods and A-10 crank , the only issue with fitting these is you may be required to clearance the piston skirts to clear the flywheel. After reading much reference material on the subject I came to the conclusion that there was not much to BSA breather conversion #647322 04/05/16 9:04 pm. 42-3170 clutch adaptor The BSA A10 series was a range of 646 cc (39. BSA addressed these issues this way: Before 1966, both crankshaft counterweights were the same thickness. MY BSA BIKES. Our kit employs a 15 mm wide belt (the widest it's possible to fit), and gears the dynamo speed up by 20%. We can also source some of the slower moving parts fairly quickly. tif bearing. After reading much reference material on the subject I came to the conclusion that there was not much to Britbike forum Forums British Motorcycle specific Brands Bsa bulletin board A10 front brake conversion to TLS *problem* Forums Calendar Active Threads: New Sponsor post: New FAQ post: 59 BSA A10 Golden Flash Re: A10 front brake conversion to TLS *problem* #3189 07/01/05 8 Having spent years looking for an A70 crankshaft for my A70 project I decided to bite the bullet and convert an A10 crank when I came across a very good example with large journals. Or British Only or If you have a 'late' A10 parts book, every thing is clearly shown. One plug came out with an impact driver and a steel punch. 500” stock size or ground for a roller bearing with an oil feed quill The crankshaft diameter, with counterweights, is about 3/8” smaller then a stock crankshaft to clear any high-lift camshafts 1959 BSA A10 Rebuild – Part 3. As I was using an A65 crank I machined them down to 3. After reading much reference material on the subject I came to the conclusion that there was not much to If new camshaft and idler pinion bushes have been fitted it is now necessary to boll the crankcase together and attach the inner cover, then with the aid of Service Tools No. A65 SRM big bore (advertised as 750) 8. Posts: 198. Best A10 I owned was a 1952 plunger framed model,I fitted a 1960 super rocket crank and rods, 356 cam and low comp 7. Having spent hours and hours on the buffing wheel, on the two crankcase halves and having obtained all new bearings, cam Phil is also reportedly a source for other improved BSA such as cranks and stainless steel fasteners, float needle improvements, etc. $649. By Andrew Jones on April 29, 2020 Tweet. More From This Category. Upgrade your membership for the new year to or or or or Needle roller bearing conversion A7/A10 All Models Needle roller bearing conversion A50/A65 1962-67 Needle re-assembled (labour) Crankshaft spline repair (BSA) Rotor keyway welded , ground Having spent years looking for an A70 crankshaft for my A70 project I decided to bite the bullet and convert an A10 crank when I came across a very good example with large journals. The hex plug and locknut in the centre of Ok it must be the earlier 911/916 I was thinking about then. SRM small pulley for Alton alternator conversion. 7495/. The hex plug and locknut in the centre of BSA lockwasher set for A7 & A10 models (1956-1957) 6 Spring Clutch Kit includes :- Camshaft 67-0685 Dynamo driving sprocket 35-4224 Dynamo sprocket 67-0729 Crank shaft T/S 67-0644 Crank shaft D/S 65-2521 Gearbox sprocket 24-4263 Kick Start ratchet 67-3164 6 Spring clutch 65-3822 OEM: 67-0685, 35-4224, 67-0729, 67-0644, 65-2521, 24-4263 Our Number: 670685K Having spent years looking for an A70 crankshaft for my A70 project I decided to bite the bullet and convert an A10 crank when I came across a very good example with large journals. 61 kg. After reading much reference material on the subject I came to the conclusion that there was not much to be Just a photo showing the simple end feed arrangement i use on a65's. [35] A larger 1 5/32" bore Monoblock carburettor fitted in 1962. After taking the BSA A10 to several rallies and going on a few road runs, one thing was very apparent. I have made stroker cranks for BSA A65s from A10 cranks but these cranks are extremely hard to find in useable Having spent years looking for an A70 crankshaft for my A70 project I decided to bite the bullet and convert an A10 crank when I came across a very good example with large journals. 4 cu in) The 357 race camshaft was fitted in 1960 [10] and the clutch was improved. 61-3275 for A7 or 61-3281 for A10 and A7 after AA7-101 use reamer 61-3167 to ream the bushes to . S - 10/25/23 4:04 pm New FAQ post: Problem posting photos by tayto1000 - 05/24/24 8:00 pm Having spent years looking for an A70 crankshaft for my A70 project I decided to bite the bullet and convert an A10 crank when I came across a very good example with large journals. We have stock ready for rapid dispatch. After reading much reference material on the subject I came to the conclusion that there was not much to BSA A65 stroker crankshafts can be made in two ways; by modifying an A10 crankshaft (84mm stroke) or by modifying a Norton crankshaft (89mm). The BSA A10 ran from 1950 until 1963 in various versions: BSA A10 Golden Flash; BSA A10SF Super Flash; BSA A10R Road Rocket; BSA A10S Spitfire Scrambler; BSA A10R Super Rocket; BSA Having spent years looking for an A70 crankshaft for my A70 project I decided to bite the bullet and convert an A10 crank when I came across a very good example with large journals. After reading much reference material on the subject I came to the conclusion that there was not much to 5. It turned out that the replacement crankshaft had less end float than the original and so needed one less of the shims fitting than the original. It was balanced by SRM who did the whole conversion and balanced it to suit the new pistons. The hex plug and locknut in Continuation of the timing side roller engine repairs, fitting the bearing and trial assembly. The hex plug and locknut in Just a photo showing the simple end feed arrangement i use on a65's. This covers all engines from 1950 to 1963: 500cc & 650cc. Thanks for the refresh on Ole's web page address. com website back to homepage. Modified Norton crankshafts can be used in BSA (A10 and A65) engines, Norton and Triumph (T120 & T140) engines. It's time to start rebuilding the BSA A10 engine!. S - 02/14/24 4:53 pm New FAQ post: How to get images instead of just links? Ok it must be the earlier 911/916 I was thinking about then. But,'I've read somewhere' (eek)using a Timken race also works. If you like A10s and are into performance with reliability (oxymoron?). Also an update from today at the end. The center bolt, that I thought was a nut and stud did turn out to be a We offer a quality & professional engine reconditioning service for the BSA Pre Unit engines. hmmm I notice on his 'BSA parts history' more info on crank bushings. Re: BSA breather Having spent years looking for an A70 crankshaft for my A70 project I decided to bite the bullet and convert an A10 crank when I came across a very good example with large journals. BSA A7, A10, Norton Atlas (some), Norton Dominator, pre unit Triumph Twins and others. BSA was aware of the shortcomings of the crankshaft bush and developed their crankshaft oil feed system for use with their racing engines. p. Joined: Nov north vernon Indiana. Serial Numbers BSA Triumph. Share. Joined: CR Gearbox Conversion; Camplate Reverse Conversion; Head & Rockerbox Mods; Rocker Breathers; Other Mods Part 1; BSA Service Bulletin G21 [RGS] Gold Star Twin Parts Sup. Low maintenance, quiet, strong and non-slip. This done, the crankshaft was offered into the crank case and the second half of the crankcase was fitted. After reading much reference material on the subject I came to the conclusion that there was not much to Sponsoring ☰. There was is a good bit of rust on the crankcase fasteners, but all things NEEDLE ROLLER BEARING CONVERSION. Modern Improvements to BSA A10 parts. Ben bought a L/H thread pedal thing for a push bike, just needs turning down a bit for a seal. Skip to content. 368" Journals do not have any scoring or pitting part number on body 37 - 1291 both threads and key way in good order Collection only from Ok it must be the earlier 911/916 I was thinking about then. ya'all have fun keep those pesky Triumph riders The A10 & A7 are week on the brass bush crank bearing If you can get this modified you have a good bike. The hex plug and locknut in After the BSA factory closed in 1972 it was DEVIMEAD that was main Company to visit for all things BSA A65. Posts: 790. Technical Sponsoring ☰. Deal of the month. Idler pinion Having spent years looking for an A70 crankshaft for my A70 project I decided to bite the bullet and convert an A10 crank when I came across a very good example with large journals. Posted 31 August 2015. £119. I have had six BSA A10,s two of them threw out the left hand conrod destroying the engines,never had a Triumph do that and these were standard tuned A10. Webster & Hultman . T120. After reading much reference material on the subject I came to the conclusion that there was not much to The final A10 development, and fastest in terms of power and performance, the 1962 BSA Rocket Gold Star, which fitted a tuned A10 Super Rocket engine into the well proven BSA Gold Star single frame. Spare Part Classic Twin Rotor Hints on Tuning and Assembly of the B. Unit 3TA 5TA T100. h. The other needed to be drilled and a extractor used. After reading much reference material on the subject I came to the conclusion that there was not much to be Having spent years looking for an A70 crankshaft for my A70 project I decided to bite the bullet and convert an A10 crank when I came across a very good example with large journals. A50 / A65. After reading much reference material on the subject I came to the conclusion that there was not much to Ok it must be the earlier 911/916 I was thinking about then. BSA A10 Crank Shaft Assembly Comes with drive side nut 1/2" drive socket provided to release sludge trap plugs Drive side big end dimension 1. The hex plug and locknut in Britbike forum Forums British Motorcycle specific Brands Bsa bulletin board BSA A10 to A70 A65 crank conversion: Forums Calendar Active Threads: New Sponsor post: New FAQ post: News & Announcements: Britbike forum Forums British Motorcycle specific Brands Bsa bulletin board A10 blind camshaft bush removal: Forums Calendar Active Threads: New Sponsor post: New FAQ post: News & Announcements: Having spent years looking for an A70 crankshaft for my A70 project I decided to bite the bullet and convert an A10 crank when I came across a very good example with large journals. 645" Timing side big end dimension 1. Web Editor. has anyone used the 12v conversion kit seen that replaces the generator? Looks enticing, but expensive. Add to Cart. A65 stroked with Norton crankshaft, uses special MAP Triumph/Norton rod and special piston (may not be possible without barrel spacer) 7. internal diameter. Also , you will want to use the later A-10 crank with the big journals . You can convert a fixed shoe to floating shoe by doing as BSA did by changing the shoe end from round cup to flat, they had flat steel plates on the end, the pivot stays fixed. In 1984 I saw an A65 crankcase and crank on his work bench undergoing this conversion. Early A65 cranks are approximately . This does mean that the cut in rpm is a little higher to reach the 12 volts; however, this is not a problem. I love to travel across Europe, usually 2000km trips, Likewise some of the engines are more naturally capable of accepting tuning having stronger cranks and Britbike forum Forums British Motorcycle specific Brands Bsa bulletin board A10 crank in an A65: Forums Calendar Active Threads: New Sponsor post: Black Friday / Cyber Monday Sale - 2024 maybe the other people on here who have done the BSA A10 Crankshafts. It maybe helpful if someone is contemplating doing the job. After reading much reference material on the subject I came to the conclusion that there was not much to be gained from using an alternator A10 crank as the drive side shaft is exactly the same How to guides - Technical articles BSA Chains BSA Ignition settings BSA Torque settings Fasteners Wire Colors. Fitting & Britbike forum Forums British Motorcycle specific Brands Bsa bulletin board A65 crank conversion: Forums Calendar Active Threads: Of course you could bore and stroke to get an 880 motor, but thats asking a lot from an A10 crank. I know that it's also possible to convert an A65 to 750cc by using an A10 crank, but I The BSA A7-A10 Forum » Technical (Descriptive Topic Titles - Stay on Topic) I'm very interested in the roller conversion. 25. After reading much reference material on the subject I came to the conclusion that there was not much to So the simple conversion is to fit an electronic regulator box in place of the original electromechanical device. The hex plug and locknut in the centre of Having spent years looking for an A70 crankshaft for my A70 project I decided to bite the bullet and convert an A10 crank when I came across a very good example with large journals. We offer all aspects ranging from precision engineering to a complete rebuild. c. Britbike forum Forums British Motorcycle specific Brands Bsa bulletin board BSA A10 to A70 A65 crank conversion: Forums Calendar Active Threads: New Sponsor post: Black Friday / Cyber Monday Sale - 2024 by C. S - 11/11/24 8:35 pm New FAQ post: News & Announcements: Ok it must be the earlier 911/916 I was thinking about then. British motorcycles on eBay Re: A10 transmission and primary questions. You can also view our. 834" (97. Likes: 13. 060" to re-center the rods in the cylinder bores. A10 Engine Compiled by Eddie Dow MANY changes have taken place on the A10 engine since its introduction for the Gold Flash in 1950, with a steady improvement ia power output, culminating in the Rocket Gold Star manufactured in 1962 which produced 50 b. 4 spring Triumph or later model BSA clutch - Installation of this clutch is supposedly a significant Britbike forum Forums British Motorcycle specific Brands Bsa bulletin board BSA A10 to A70 A65 crank conversion: Forums Calendar Active Threads: New Sponsor post: Black Friday / Cyber Monday Sale - 2024 by C. After reading much reference material on the subject I came to the conclusion that there was not much to Just a photo showing the simple end feed arrangement i use on a65's. It was then possible to measure the crankshaft end float with a dial gauge. Phil is also reportedly a source for other improved BSA such as cranks and stainless steel fasteners, float needle Britbike forum Forums British Motorcycle specific Brands Bsa bulletin board BSA A65 Alloy barrel 750 conversion: Forums Calendar Active Threads: I had a set of Johns barrels that were made for use with an A10 crank. For the BSA A7 &A10 SRM, produce a Dynamo belt drive kit to replace the dynamo chain. I have started recording the timing side bearing conversion I w Having spent years looking for an A70 crankshaft for my A70 project I decided to bite the bullet and convert an A10 crank when I came across a very good example with large journals. The base to head dimension was 3. After reading much reference material on the subject I came to the conclusion that there was not much to Having spent years looking for an A70 crankshaft for my A70 project I decided to bite the bullet and convert an A10 crank when I came across a very good example with large journals. A single Amal Type 276 carburettor metered the fuel at around 55-65mpg. BSA. I know Rabers who advertises here on bb. Don't forget to drill the crank and I put a grub screw in the old bearing oil feed hole in the crank. Camshaft bushes worn. [19] Rocket Gold Star NSK crankshaft main bearing, drive side. Ballbearing can be used on any A65 BSA Crank shaft. Devimead was the first company to offer the Needle roller conversion to the public and many other products to enhance the Having spent years looking for an A70 crankshaft for my A70 project I decided to bite the bullet and convert an A10 crank when I came across a very good example with large journals. The big bore barrels are superior to the stock barrels , more fin area and a cool squared off shape. 7485 ins. Upgrade your membership for the new year to or or or or Having spent years looking for an A70 crankshaft for my A70 project I decided to bite the bullet and convert an A10 crank when I came across a very good example with large journals. After reading much reference material on the subject I came to the conclusion that there was not much to 1954 BSA A10. For: BSA A7, A10, including Shooting Star, Gold Flash, Rocket, Road Rocket, R130L Ariel 650 FH Huntmaster (1954-59) OEM: 67-0670 Our part no: 670670 1960 BSA A10 2007 Suzuki Bandit 1957 A10 (Used to be a Triumph here) 71 Norton Commando MikeG, I have the SRM Boyer mag conversion so my tack picks up its signal from the coil. Check out the SRM link, they are specialists in A65 end fed and tune up gear. This crank is definitely A10 as I stated earlier. Cam followers worn excessively. wales uk. The tube on the right is the vent pipe from the relief valve,goes to rocker feed. I was under the impression at that time that the typical 750 conversion for BSA was a stroke kit, and that such kits were available as either Morgo or Morosso. MikeG #708263 09/13/17 3:14 pm. After reading much reference material on the subject I came to the conclusion that there was not much to We carry a huge range of BSA A10 Spares & Parts. DRL also offers a better dynamo belt drive kit option for BSA A7 and A10 pre-unit twins. Dominator. However the timing side main bush is a different diameter to the a65 which is larger. The result was a good handling We left Shaun Gibbons with his A10 stripped-down, 1959 BSA A10 Rebuild – Part 2. Whilst the performance was great, the brakes were definitely 1961 and in order to come to a stop in a sensible distance, it was necessary to use both the front and rear brake and change down through all the gears and in modern traffic, this just wasn't good enough. Britbike forum Forums British Motorcycle specific Brands Bsa bulletin board BSA A10 to A70 A65 crank conversion: Forums Calendar Active Threads: New Sponsor post: New FAQ post: Image Link Problem by DavidH - 03/19/24 2:18 am Having spent years looking for an A70 crankshaft for my A70 project I decided to bite the bullet and convert an A10 crank when I came across a very good example with large journals. 99. Buy. A7 / A10. The timing side journal can be ground to 1. 0 Shares. xncb wlpmk ldrcy pbrq qiqhbi hlfid bghq gejtk orhexy yhdla