Pre-65 Bikes

Well having arrived in Kinlochleven at 3am on friday we've just got back! Two great days of trials half decent weather with rain ( drizzle mostly ) and a fair degree of sunshine. Paul Heys seemed absolutely determined to win , his concentration was a step above most others, Tony Calvert is a very cool customer and he always looked in control. the frist day started with the observers on the first two sections standing on the wrong two sections! ( they were in fact on saturdays sections, ) an impasse looked inevitable until a resolute we've started so this is were we'll observe decsion was made. and so the riders made thier attempts. Mick Grant took a 5 for a tumble as h…

I'm assembling a C15 and see that the drive chain hits the inside of the engine cases. By inside, I mean the clutch side. This is a 428 chain with the smallest (13 tooth?) sprocket. I know you can run a 520 chain so something must not be correct. Can someone tell me what a notmal or expected clearance should be? A couple of pictures are attached.

65 entries the week before the p65 scottish at a classic venue with streams muddy slots and hill climbs http://s887.photobucket.com/albums/ac74/to...l/25%2004%2010/

Hi all, my mate has pulled his c15's gearbox out of the centre casing without removing the clutch so all the bits kind of fell out. The camplate has been inverted to give an other-way-round gearchange. He's stripping the clutch off the shaft to reassemble it but was wondering if the selector forks still go back in the normal way that they would with the camplate the right way up. The reason he's opened it up is that it's jumping out of first gear, any ideas?? Thanks for any help / info, Craig

Hi i need some help!!! i am building a tiger cub and a couple of threads are stripped on the crancases that hold the inner cover on. does anyone know of someone on teeside who could do this. many thanks Philly

Help!!! I know there are lots of different oppinions!!!!! But to be eligable for the scottish 2 day do the bottom frame tubes still have to be fitted????????? I know some clubs want rear frame loops and stuff but are the bottom tubes required???????

My old man is finally going to ditch the horrible standard ignition system on his C15S. What options do we have on a electronic version? I think we would like to go down the crankshaft mounted route to avoid the backlash in the distributor system. Do any of them have lighting coils fitted as standard/option. Thanks

Hi, anyone know of any very light oil l(5w) that's good for primary chain case lubricant. I have tried a mineral transmission fluid that was OK but did tend to let the plates slip after a short period which was noticeable on kick starting. I did wonder if Diesel oil would be any good?

Hi everyone, I am confused by the process of adapting modern internals into a pre-65 type fork leg. I am an engineer by trade, but find it hard to visualise the process. Is anyone out there able to explain the concept? Do you bore out the classic fork bottom? That would weaken it. Do you make special bushes? That would be difficult, as modern fork stanchions tend to be of larger diameter than classic. Do you machine the outside of the modern leg, and somehow fit the entire modern fork within the classic fork bottom? I can only imagine that classic fork legs must be chosen carefully, with larger diameter ones preferable, or modern forks chosen that are close to the d…

Hello all Why do we have this so called pre 65 rule book which i hear quoted at every trial when clearly most of the bikes do not fit within the so called rules! Mcdonald cubs that do look the bizness and brand new dots that are 2010 made..how are they pre-65? frames are nothing like the originals front loops. there not meant to be altered are they. but all the trails i have been to recently the organisers havnt battered an eyelid. it seems ok to run these trick extra light engineering genious machines..but its not pre 65. How do the dots get into the scotish? there not pre 65/67. Am i loosing the plot bringing this up does anyone else seem to be bothered this all happe…

Hi All, I have the opportunity to get a 1964 DOT Demon square section scrambles frame with 2 Villiers engines(197 and 250). Can anyone tell me the difference between the trials and scrambles frames and what the necessary mods would be to make it suitable and/or better for trials please?

Hi, Has anybody got a copy of the MCN SSDT event report edition,( the week after the trial)? Pat.

Hi, Will kindly ask if any of you have found softer spring rates vs std for Amal MK1 throttle? BR, Pat

Can someone tell me how a C15C frame is different from an earlier (1960) C15 frame?

Hi Guy's Its been a long time coming, but have now got the site up and running, any information about bikes, ETC will be more than welcome. Take a look and let me know what you think. Here it is , http://www.bsaotter.com/ PS could do with Collin Dommett's phone number,or an email address. Regards. Charlie.

Hi All This is not really a pre-65 topic but I'll put it out here: I just acquired a B25, oil-in-frame rolling chassis. Where would I find the frame numbers? Thanks in advance David in SA

Hi Guy's Just on with changing the fork seals on my Sprite , so while they are in bits are there any mods that can be done to improve the forks , also anybody know of other springs that will stiffen the front end up .. Any info grateful

Just been looking at the piccys of the Don Smith Memorial trial 2009 and on there is a BSA Bantam. Now thats what i want mine to look like when i get around to building it. Bootiful. Can anybody supply me details please ? Reposted here as i thought i possibly more appropriate under Pre 65 in retrospect. Sorry.

hi there, I'm planning to convert my Royal Enfield Crusader from an Amal Concentric to a Villiers S22. Trouble is I have little or no information on settings or tuning of these carbs. I understand that these carbs are very good once set up, and if it was good enough for Gaunty! Does anyboby out there have any tuning or base settings for one of these carbs with the 250 RE, I also have a S24 and a S25, would one of these be better suited? I know that the current trend is for 22mm Dellorto's but at

Hi All, Anyone know where I can get some rickman brake shoes for my trials bike. Front and back. Thanks Steve