Pre-65 Bikes

My G3 Matchless uses a Lucas wader magneto with manual advance retard, as it would have been back in the day. The majority of unit 4 strokes and most of the two strokes have all moved to electronic ignition, which potentially leaves the pre unit further behind... What ignition system are you using for you pre unit bikes? Is it an improvement on the original magneto, and is it worth changing?

Hi , I have a ex tom ellis c15 i am looking for information on . It has a pink/ red scrutineering mark on the frame that we have now identified as entry number 84 in the 1963 ssdt. This was Tom u Ellis entry number and i understand he did not finish due to injury. I am tying to get any pictures of this bike and rider . We have approached various photo archives but thought it might be worth asking on here for help

What is the easiest electronic ignition to fit to my T20 cub. Its the older one not the one with the points on the side.

Has anyone used Aspen fuel in Villiers engines and did you use Aspen 4 and use your own twostroke oil or the ready mixed Aspen 2 ? Was it better than pump fuel and was there a noticeable improvement ? I know its alot more expensive but is it worth it as I only use my bike a few time a year .

I am going to need a new rear sprocket for my Pre-65 Trials bike soon. It's a BSA B40 with Triumph Cub wheels, using 428 chain. I am currently running a 76 tooth sprocket, and had once purchased a replacement rear from PMP sprockets in Wylie TX. I was very pleased with. Sadly, they are no longer in business, and from all I can tell, the business was bought & operated under Superior Sprockets name. When I follow down that rabbit hole, their website is "Temporarily Closed". Does anyone have any experienc with other custom sprocket makers who might still be in business? I'm going to be in need very soon! Thanks

Всем привет! Ищу тех у кого был такой RTX. Готов пообщаться и поделится информацией о мотоцикле Минск.

Is there a diagram as a starting point to set up a PVL ignition on the D14 BSA Bantam ? Thanks in advance

Hello everyone,Im a new member, I recently bought a Ariel trials bike and don't really know what I have.I used to do pre65 trials on a T100 Triumph trials bike and have always wanted a big 500 Ariel, so I took the plunge.Can anyone shed some light on to my bike? Would love to know who built the frame etc.Thanks everyoneAlex

I am the owner of a 1959 tiger cub. I wonder if it is a good idea to fit an oil seal in the guide valves to avoid some oil in the chamber combustion...?. There exist some from Norton with similar interior size. It only needs to mechanize the guide. Does anyone have any idea or sugestions about it? Thanks in advance

Can anyone help identify this Alloy barrel which came with some Villiers engine parts ?,it fits Villiers 37A cases and is 66mm bore . I'm sure its a trials barrel not scrambles

where is a good place to buy 40 hole alloy rims 21" and 18"

Please can someone id a frame number its believed to be a DMW but unsure someone has tryed bacon books but no luck Spoiler

As I inch closer to being half way done assembling my motor, I need to decide what to use for a gearbox sprocket. I have a 18T crank sprocket and a 52 on my rear wheel. Standard SS ratios in a dedicated trials machine. My local suppler (bsaunitsingles) has suggested a 13T as a good starting point but there is also a 12T available. I ran out of "meaningful" progress while waiting for parts to I took the case covers to the polishing wheel. Ill never do that again but it sure looks nice.

Good evening wonder if anyone can give me some advice. I have inherited a b40 off my father he took the clutch apart a few years back now. Could anyone please tell me the way the clutch plates go back in ie friction plate, steel plate, friction plate ect? And what oil and capacity should I use in the clutch/primary chain. Many thanks

Has anyone done this, any issues with fitting it in terms of chain alignment and rubbing the tyre?

A teaser for the oldies: What's the connection between a Quality Street tin and a trials bike?

I use Pirelli MT43 tyres on my B40 which unlike a lot of trials tyres are ok for road use. I once tried a Michelin trials competition and after a couple of miles it heated up and the bike was un rideable. I want a tyre for my Norton but as it has a 19” wheel tyre choice is limited. Pirelli don’t do an MT43 and the only others I can find are an Ensign which isn’t really a proper trials tyre and a Mitas. The Mitas looks like a full 400x19 trials tyre but I’m unsure as to whether it will be too soft for the road. The bike will mostly be used on the road but I might do the occasional long distance trial etc. I’m not bothered about wear characteristics or trials grip but …

Hello, Although I have a 1964 T20 Cub, the problem I have concerns a 1963 T20 engine that I am trying to rebuild. I am missing a couple of crank case covers and despite my best efforts I have not been able to locate them. I am hoping that someone out there in the Internet world will be able to help me. I am trying to find the following items :- Part Number E 4449 or E 4787 Right side Inner Cover and Part Number E 4089 Left Outer Cover. If anyone out there has any of these items and they are prepared to sell them, or if you know someone that has engine parts for a Triumph Cub and may just have these items sitting in a box somewhere and you are prepared to give me…

Can anyone help, building a Trifield but not sure what swinging arm to use. The frame is 1958 but the existing swinging arm will only allow a 17inch rear wheel. Any ideas! And does anyone have one. Thanks JOJOTUT

Hi guys i hope you are keeping well i have opportunity to get Bsa B25 engine are they any good for trials . pros and con for trials please i want to put in royal enfield crusader frame sinve it is very light . regards