Pre-65 Bikes

Hi, i'm just after any advice someone might be able to give me regarding piston / bore clearance when reboring the barrel of my villiers 32a engine. I have been given sizes ranging from 2 to 5 thousandths of an inch, what is the best clearance to have? Also where is the best place to get a new piston and do you need to fit a head gasket, I have been told it is not required. Thanks for any help you can give me.

Hi: Are this Norton sliders?? Is there any place where they could change for me this inside part "friction sleeve" or however it is called? They were originally in a trials TFS greeves. Thank you !!!

Advice greatfully recieved Iam in the middle of a belt drive conversion with an neb clutch was wondering how to seal the crankcase do i need to machine a seal holder and run the seal on a hardened sleeve or can i just fit a main bearing with a an internal seal , also I have got a 24 tooth front pulley but reaslise some people run a 22 so they can fir a smaller rear sprocket , thanks Jim ( sometimes easier to ask than work it out )

noting the problem with all the various classes and routes in a modern classic trial why not go back to the system used when i started, we all rode the same sections no different routes, you just got on an rode the event , as a basic novice you struggled but learnt , your first clean was something to celebrate as you progressed to centre level then national trials ,my turning point was finishing a trial without stopping ,i may be an old fashioned sod but at seventy five i am still riding but now on a proper pre 65 outfit , a panther of course, cheers will

I'm putting together a C15 with an original oil tank. It looks like there is room to move it in towards the center of the bike. This would make the bike more narrow and possibly make space for the exhaust to go inside the subframe? (1960 goose neck). Has anyone done this? Do you have pictures of the mounts?

Hi all, I'm about ready to embark on my bantam trials machine. I've had her tucked away in the garage a good few years now. Someone has had a go at her before but a bit cowboy'esque !! She has what I believe are Montesa adjustable damping forks and wheel set up. With (somewhere) the swing arm and adapters to fit this also. But it doesn't seem entirely British, I'm all for using what works the best but I think I would like to keep it at least looking like it could have come out of the BSA factory. So then questions....heaps of them if anyone could help. Just a few for now: - Where do I start with frame mods, lifting the reas sub doesn't seam too difficult but I'm conce…

Hello all Can anyone assist please I require a supplier of brake shoes for my British Hub company hubs for my trials iron, any information will gladly be received. cheers.

hi,fitted smaller front engine sprocket and electrex ignition tighened up,engine dosnt turn primary chain fouls case,what do i need to do remove shoulder where chain fouls or ????????

Anyone got a pic of an HT ( their bike ?) with an Avery Products- Terry Weedy tank? They're quite a bit cheaper than the Holtworks ones so just wanted to get an idea. Thanks

I'm building a Banvill 197 with a 9e engine that ran fine 20 years ago, currently waiting for bottom end to return from alloy welding. But looking at the top end & comparing it to photo's of the Greeves it was previously fitted in I'm concerned about the length of the carb inlet, it's 3 inch long plus a 3/8" fibre spacer see photo. with the air filter I've bought I don't think it will all fit in the frame loop. I have no problem shortening the inlet but just wondered if anyone had seen one as long as this as previously I had Villier's carbs on other engines.

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 give details for this event, classes etc? When and where?

A common mod on the Bantam is to fit a crank weight usually brass, I am going to build a B175 engine which apparently has a heavier crank, does anyone know if, a. the weight is needed / used and b. who makes the weights. Thanks.

Hi all, a friend has these on a Bantam but what are they exactly? He needs some parts and wants to be sure Thanks in advance, Dave

How many do you have on the back wheel, one or two ?

hi all thanks for the info and tips its been great today i put the engine together with dad, but her in the frame frame and 4 kicks later she lives! i love the smell! a tad loud as i haven't got my exhaust set up yet... that's next, anyway just some pics to show you how its looking all parts are hand made IE mudguard stays brackets etc..... well not all but in total the build has cost me just under £450 to build and its been great doing it i cant wait to get out on her!! many thanks mikey

Hi guys, I have noticed that more and more twinshock and pre 65 bikes now have hollow ali spindles. where would you find theese or are they home made? Cheers

Hi, how much tarmac road work is there on the Arbuthnot trial please ?

I am so very drawn to the Pre 65 bikes class at the moment, the shapes and the nostalgia are just great. My question is why is there a specific demand for pre 65 ? what happened after 65 that people didnt like>?

my project currently has some 36mm jap forks in that are not really suitable for trials, I am planning to change to bultaco 35mm leading axle forks as I have access to some, my question is what type of yokes? cubs are non parallel with 1.5 degrees in the yokes as standard, but given that I am changing to leading axle forks should I be looking of parallel yokes to compensate for this change or would non parallel ones work without causing issues to trail/rake?