Pre-65 Bikes

What is the best carb choice for a tiger cub 200 for Pre-65 events. is there a restriction on tyre choice, ie X1 michelins allowed ?

Hi, I am building up a Bantam trials bike from an engine that seems to be a mix of 3 & 4 speed parts. - So its a 4 speed box, and 175cc top end - but it has the old Wico-Pacy ignition - and it has a clutch basket with 3 friction plates. I've been out for one shake-down ride, and the clutch slipped like crazy. My plan is to get a set of new friction plates, and a set of (6) stronger springs. But I just wanted to check whether this is likely to fix the problem, or does everybody end up having to fit a 4-plate basket. Would the 4 plate basket be a straight swop ? Tony P.

Dad has said I can give this a try if I promise to not get it dirty or crash in a big heap. That was 4 years ago and I still can't make that promise. But he's gonna let me ride it anyway. Boxing Day trial perhaps. Just need the right venue. Midlands area

Hi there Im after some advice on my sons Bantam It has a D7 Engine, standard Amal carb and standard style Air Filter. Currently it doesnt have electronic Ignition. We have only had it a few weeks and took to first trial today. Up to now its been tried out in the street with no problem. First couple of sections if was fine - then started to bog badly when opening the throttle - also a bit of backfire ? Got to the point it was difficult to ride was boging so badly. Changed the Air filter for a foam one I had in the tool box but the problem was the same. Got home and after an hour or so on the trailer, fired it up and it ran spot on (albeit only for a few minutes). I …

Does anyone have contact details for Roger Heap who lives around the Preston or Lancaster areas please ?

I know very little about these bikes which I believe were ridden by Dave Rowlands and Mick Bowers, do any of them remain, were they very special. If BSA had perseverd with them might they have had a Bultaco beater?

Hi, I am looking for some information/ advice on a B25, what gearing? What oil?, what carb, recommended mods if any

Well the sows ear project is progressing very slowly and i am now at the point where i am looking to fit sprockets. Got a 12 tooth crankshaft sprocket fitted so what is the best combination gearbox and rear sprocket that people have found

Need a barrel.

Still working on my 'new' 500 long stroke Ariel The carb is an Amal concentric 626 and it's worn. Specifically the slide is very worn with loads of movement in the bore but a new slide is very tight which suggests a poor / distorted body. The jetting is bushed pilot, 106 needle jet, 160 main jet, 3.5 slide. Now I could order a new carb with the same jetting but I think people are using 622 carbs these days to improve low speed running and control. If that is the case would I keep the same jetting and slide in the smaller carb or would I have to change it?

Long story, but if anyone follows me on Twitter you'll understand my question :-) If anyone has or knows of an AJS Stormer 370cc or 410cc. Engine for sale can they please PM me? Thanks

Hi guys I am struggling for past few weeks . I am not able find suitable bearing for BSA C15 headstock with Ossa Mar forks/yoke. either the bearing is smaller or bigger. if someone can provide brand/number they have used. and workaround that will be very helpful. Regards JH

I’m looking for a nice exhaust silencer for my Villiers project, I’ve had a look around and all I can find are 4 stroke silencers?

Hi there im rebuilding a Matchless G250 for trials riding it had a 28mm monoblock carb on as standard road trim what size should i buy a new concentric carb for trialing cheers andyd

Just stripped down my 4 speed gearbox, the bearing on the output shaft seems to have a coating of copper on it, I presume it’s a 6205 bearing but it measures .002” over size? I’ve tried a 6205 bearing on the casting and it’s a slide fit at best, I presume the copper coating is to pack it out, has anyone had a similar experience? Or does it use a special bearing?

Can anyone advise me Sprocket size for bsa c15 trials . Thanks

Does anyone know if this bike is still around and if so who owns it? I'd like to ask them a few questions, I have a cunning plan..... Charlie, hope you don't mind, I took it from your excellent website, I owe you a beer :-)

Could anybody please point me in the right direction regarding the above bike owned from new by my trialing uncle. He is looking to restore the bike to original condition could anybody please recommend a company or individual who is capable of carrying out the work. Would prefer East Anglia or South East. Many thanks

Does anyone know what weight difference there is between alloy and steel rims? I'm thinking the standard 21/18" trials sizes. Hopefully someone might have some lying about they could weigh! Thanks!

During a conversation at a trial last weekend I was told that 5 speed boxes are now being made for Bantams ? So had a look around on the intraweb and only found a few references to road racing. So who is doing them,or is it the GPO trying to get their telegrams delivered quicker.