Pre-65 Bikes

Here are a couple of pics of the b40 i bought last week

Hello , Can anybody suggest the correct length spokes to use to offset the rear tiger cub wheel when used in a C15. I've already been told that a bantam hub would have been better but i would like to keep the Cub Hubs. Many thanks Mark.

I am trying to find the best type and model of pvl ignition to fit to my triumph tiger cub also which rotor numbers etc and any uk stockists. Any suggestions would be appreciated.

There have been a lot of contributions of late about Cubs and the building and setting up thereof. Well for my sins i an in the final stages of building a B40 so what are the recommendations for a B40? You know the usual stuff? Carb size and type. High Comp or Low comp piston. Sports or road cam. Gearing. Michelin or IRC tyres. (While I'm at it I've been told that tubeless Michelins are slightly softer construction than tubed ones. Is this true?) My bike has a Faber frame and Betor front forks and has a Ex WD GB B40 Engine at present with points on sidecover but has had them removed and a PVL ignition fitted. I was thinking of fitting a Amal Mk 1 Concentric 26mm NB…

Can anyone recomend which tyres works well on Pre 65 and should they be used with a tube or tubless

I have been gathering bits and pieces for a rigid triumph project for a while now, I have a 49 ish Speed Twin frame and various pre unit motors some alloy barrell, a military TRW front end and Cub trials wheels, has anyone got any advice, pictures info that might be of assistance in the build up? I want to put together a sort of TR5 trials bike. here is what i have done so far

Having recently fitted a new 22mm Amal concentric carb to my cub, to try to cure low rev stalling in sections I am still having problems curing a flat spot which happens if i snap open the throttle from idle. i called Surrey Cycles for advice they suggested fitting a brass slide with a bigger cutaway which i fitted today. i took the Cub for a run on road to warm it up and then tried to trickle along at idle occasionally bliping the trottle to lighten the front flat spot is still there - again only if the throttle is snapped open, if the throttle is opened slower it revs cleanly all the way through the range. Do you think this may be an ignition problem, I am using a Boye…

Can Anyone help, I have a BSA B40 fitted with Boyer Bransden ignition I would like to fit an ignition kill switch ( small push button type )how do I wire this into the system ?

Now firstly sorry to post this in this section but i respect the advice and opinions of the contributors. I have just bought a new NZI carbon fibre helmet from Sammy Millers to use when riding the B40 in local Pre 65 trials as i understand helmets are now compulsary. On opening the box i noticed the helmet didnt have an ACU gold sticker. Didnt have any ACU sticker to be precise. Rang Sammy Miller and they said that was right that the helmets are not ACU approved but that this shouldnt be a problem. Now in your opinion and experience is this so? I would have assumed that Sammy Millers being a major trials specialist should not be selling items that are not suitable for…

Look at the price fetched for this Royal Enfield engine on E-bay. http://cgi.ebay.co.uk/ws/eBayISAPI.dll?Vie...AMEWA%3AIT&rd=1 And it is an unknown quantity!

I have been nagged for so long by several people that I should give up on my old Honda and Gollner Honda and buy a lightweight 2 stroke. Well here is my latest 2 stroke! Well no-one categorically stated I should buy a '2 stroke trials bike' Thats it MOT tested now and proof of age in the post, it will be a trial riding this in modern traffic what with no clutch and little or no brakes as the 2 stroke oil fumes get on to the back wheel rim.

Hello folks, I have just arrived on this forum, I recently bought a '63 trials cub and I am looking for advice on the best way to get the front forks set up, or should I just replace them with a set of Cerianis I have ?

Has anyone recieved thier entry for this years Talmag Trial.

A definitive eligibilty list for Pre 65 Scottish ? The entry form is open to interpretation ?

Just got my grubby mitts on two issues of the 'Offroad Review'(Nos 70 and 71 to be precise) published 1999 by Ariel Publishing. These are excellent, offering a wealth of interesting articles and superb quality photographs of classic off road action from ancient to more modern times. I've never come across these before and I'm just wondering if anyone can tell me if they are still published. I can't find any reference to them on Google so I suspect they may not be but does anyone know for sure? TIA for any info, and happy new year to all...

Just sortin the old fellas b40 out & as the brakes are usally on the crap side does any one know of some good stoppers that fit? :santawink:

here a works 1947 500t ridden by Jack Blackwell , in the scottish 6 days in 47

:hat: seeing if this works,heres one of my oldes,1962 rep. of john giles scottish 6 day bike :

This is probably a really dumb question but I am new to Pre65's (Last brit bike I owned was in 1980) How do the imperial chain sizes compare to metric?, by BSA chain looks to be about 428, does that seem right?. Also I have put an NGK plug in (equivalent to a champion N3) but it seems very loose in the threads antil the last turn, any ideas?. Ta in advance.

What is the performance difference between a std cam & an R cam when fitted to a 199cc Cub. If the R cam is used do you need to fit stronger valve springs. Also engine, gearbox & rear wheel sprockets, I thought of going with 17t engine, 13t gearbox & 60 or 62 rear wheel on 420 chain, does a wider size chain catch or rub around the gearbox sprocket area. Which is the best Carb to use I am told the Del-Orto 22mm is very good is this correct.