Pre-65 Bikes

What would be involved in converting a road version tiger cub ready for trials? Is it cheaper to buy a road tiger cub and convert in to trials trim - or just buy one already modified off a well known internet auction site?

What a mare i am having with my tank off my Panther.I got a decent tank last year at the Stafford show(its one of those centre mounted trail bike type jobbies off a 250 bsa). So I had to manufacture some ali mounts to sit it on the bike,A bit of bashing of the lower surface allowed it to mount lower down.So I decided once I was happy to get it blasted and then paint it.So i dropped it off at the blasters and then my dad picked it up the following week. When I saw it i was horrified.they had dented it 3 times on the top and RH side.So after much moaning they at least gave me my money back.So I decided to leave it for last season and then get the dents knocked out in the c…

today i took the bantam out for the first proper play about the field and a few rocks, it was going good the bantam was pulling well and i was doing ok and as i was doing well hoping about the place i did it one more time before i went home, i went up to the step witch is no higher than 4 foot ( i had been doing this all day) anyway i went for it one last time! it all went wrong the back wheel slipped i lost balance and in result the bike land on me and twisted my knee it hurt like hell! i got up pick the bike tried to kick her over and my knee was taking the presure so i pushed it and hoped along with the bike when i got home i noticed that all my hard work and time put…

Hello I am working on a D1 Bantam which has been converted to a rigid rear end, i want to increase the ground clearance and to my way of thinking, the best way to do it is basically cut the bottom of the frame off and weld it further up and thus moving the end up towards the tank etc. Has anyone got any suggestions or words of advise on this sort of thing. I appreciate its not to everyone's taste but its a spare frame and the bike needs to be a bit more usable or the project will die a death in the corner of a garage unless some new life is breathed into it! At the same time, we'll be improving the fork angle, any angles that are considered the "golden angle"? Thanks…

what do you think about having a bike with or without matching engine/frame numbers? what difference does it make?

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

Does anyone know what grade aluminium is used for replica cub hubs? I’ve got a bit of 6082 and was thinking of make a pair

Looking at my increasing collection of Cub spark plugs that have virtually no wear (less than 8 hours use) but have been removed because they are 'sooted' up, I decided to take the plunge and invest in a Spark Plug Cleaner. Basically it is a mini bead blaster that plugs into a compressor air line. Before you respond, I am also taking steps to resolve my dirty plug habit! I note that the cleaning medium is cast iron balls rather than sand (silicon) and have ordered a spare bag as I have no idea how long it will last. Does anyone have any experience using one of these devices and/or any tips? (not spark plug tips!) If not, I'll let you know how I get on. These tools …

Hello everyone, does anybody know where I can source a new headset for my James (55K7) thanks.

Has anyone tried the Mikuni off a Beta on a C15 or other Pre-65? The 26 mm size seems somewhat appropriate but I'm wondering if jetting would be a major effort.

Hi, am working on a 30C engine (similar to 8E) . Just put new mains in the crankcases,and drew the 2 crankcases together using longer bolts. Now the r/h crank web (Ignition side) is touching the inside of the crankcase.There were no thrust washers on the crank when I stripped it,and online diagrams show none present. What determines the 'end float' / centralisation of the crank anyway? Once I tighten the primary drive sprocket fully will that pull the crank away from the opposite case, a quick tighten has already moved it a little.... Thanks in advance, for any help to ease my frustration with this

Does anyone know where I can get a 19T 520 (5/8, 1/4) for a Burman GP gearbox, or will I have to get the grinder out? Thank

After stripping and checking my cub engine I was disappointed to find I had much the same running problems with not revving past 1/3 throttle and sooting up plugs on reassembly. Convinced I had a problem with my new 20mm Dellorto carb, I tried a friends 22mm Dellorto carb (from his 250 Serco Cub). This appeared to work much better. The engine revved pretty cleanly and the plug even appeared to go from black to straw colour! I must admit we didn't do an extended test due to time constraints but the bike was vastly improved. Bob at UPB kindly exchanged my carb for the larger one. The only difference is that my new 22mm carb has a 100 main jet and the main j…

I have now removed the previous topic relating to this. There are certain parts of things that, from information received from multiple sources, do not stack up. As the two parties in question are now in contact and will, hopefully, resolve the matter amicably there is nothing to be gained from continuing the debate.

Asking for a friend. Anyone know where to get a con rod & big end for a MZ 150. Apparently they can be machined to fit the Bantam. Thanks in advance. Ross

Can anyone tell me what the timing (fully advanced) should be on a BSA B25? I can’t remember what I used to set it too! I’ve set it to 33° but not starting very well (seems ok when running but backfires when I close the throttle) its always been a good starter

hi there any one useing these are they any good? http://www.ebay.co.uk/itm/221016087979?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1423.l2649

Hi, Will kindly ask if any of you know of a supplier who offers Amal MK1 main jets in sizes above 110 but leaner than 120? Cheers

Ian Roberts (Serco)has decided to show his face on ebay as may0905 If anyone is looking for him Thats the lead.

At last something from the govt that i can enjoy, despitenot actually agreeing with. No more MOT'S! http://www.bbc.co.uk/news/uk-18146326