Pre-65 Bikes

Disregarding an aftermarket frame, what mods have you done to your cub in order to improve competitiveness?

As many of you know i an still persevering with the sows ear project. Mainly because i have no choice and no money now What i want to know is we are now in the 21st century so why is it that when i buy an item sometimes costing hundreds of pounds manufactured from billet on a CNC machine that cost more than my house NOTHING EVER FITS !!!!!! why do i always have to work on the item to make bearings fit or to make it fit the other parts supplied sometimes from the same supplier ????? Everything i have bought lately NOTHING fits ! i have to spend ages with wet and dry or machining the component on my lathe etc Surely it's not too much to expect when paying so …

Does anyone know if a C15 engine will fit into a bantam frame? I’ve built a rolling chassis for my bantam, no engine but I do have 3/4 of a c15 engine!

If you have a spark and you don't get a bang or pop after putting petrol directly into the barrel any ideas what this means, is the timing totally out?

Hi, I've inherited my late Dad's '60 C15T and, despite not riding Trials (but a motorcyclist for over 50 years), I intend to restore it. I'm not clear yet quite how to go about it, what my priorities are or should be, and... I am NOT a mechanic! But I know my limitations and I don't intend to sod the 'bike up through ignorance. I'm going to convert it to 12v and fit Boyer Bransden electronic ignition (it was a bugger for my poor old Dad to start!) as I'm OK on electrics - I fitted a Boyer Bransden to a Sammy Miller Trials Cub I once owned. Then I need someone good to completely rebuild the engine (with the desirable mods) - someone good and not someone who just th…

I have a 3 speed D7 bantam , is it possable to put a 4 speed cluster into it or is not worth it.

What bits are needed to convert a standard engine into a short stroke ? Anybody have contact details for Mick Dickinson, makes heads and barrels ?

Friday night cat amongst the pigeons!

Bit of a long shot really, I'm in the process of making a Bantam from wheel fit into a pair of 4 bolt BSA forks. The spindle diameter is too small for the forks, I was wondering if anyone could tell me the bearing sizes and brake plate nut thread for a spindle that used the 4 bolt forks ?

What weight oil and how much in my '67 Triumph tiger Cub clutch and trans? Is the clutch and trans oil different? Thanks. Mick

Hello there, My 3ta engined trials bike has suddenly decided not to run unless on full choke. I've stripped and checked the carb a couple of times, float and needle are OK, tank and carb. filters are clear, tank cap breather is clear, replaced jets, needle and gaskets but no joy, it splutters out as soon as I begin to open the choke. Exhaust pipes are tight, can't find any evidence of cylinder head leaks.The plugs are obviously sooty black with the choke on. The bike has a Rex Caunt ignition system. Any suggestions would be welcome, no matter how unlikely they may sound!. Regards, Bulltaco.

MY 199cc Cub is fitted with a 22mm Dellorto carb of the type supplied for the Triumph Cub so presumably correctly jetted but I think it runs a bit rich on the pilot jet, with no reference available that I can find I hope someone can suggest the preferred jet and slide combinations please?

Hi all, Having moved to the country and wanting to get back on 2 wheels, I've bought a BSA C15 and#39;trial' project see pic 1. it's not complete and in buying a job lot of parts I now also have a spare frame see pic 2. It's a 1960 c15 frame but has been modded to take what i think is a bantam tank pics 3 & 4 Has anyone seen a frame like this/ know anything about it?

Hi all, Does anyone have any information on the Cotswold BSA frames and the history around them. I also hear a lot about John Husband, did he build he a lot of bikes?

Finally got my Butler running but only with the choke slides fully closed on the air filter? Ticks over and runs lovely,pilot jet at 2 turns out and it takes throttle so why is this. No obvious air draws, any ideas welcome. I've been told to try an Enfield amal but would like to get it running as original. Cheers, peter

Morning Apart from Dave Dawson Does anyone use the Maxton rear shocks Thoughts on them? Marty

This was left to my wife after her Grandfather passed away. We believe he acquired the necessary parts and built it himself. It ran well and was all there but it was "used". It was his favourite bike. So I decided to show it some love. The frame and swing arm have been powder coated, forks have all new internals and have been polished. The wheels have been polished and the brakes over hauled. The rear shocks were fubar'd so a very similar pair have been used. Both yokes have been powder coated and new bearings installed. The build so far

I'm trying to source a T100 pre unit engine for a mate, if anyone has or knows of one for sale can you please give me a shout? If you PM with your number I call you back. Cheers

Hi Guys Finally i got OSSA Mar forks for my BSA C15 project. I have couple of questions, > There is oil leak from screw on fork leg. I tried to tighten it , but its thread is gone , how to fix it ? > What is easiest way to hook OSSA forks to C15 ? . Should I use C15 ball bearing race to OSSA yokes. or should i use C15 yokes ? and OSSA forks legs . I prefer to use OSSA yokes if possible , they seem more suitable to me. I am attaching pictures .. please advise. Thanks in advance Cheers Talha

Happy Bank Holiday to all readers. I am in a good mood today, even after yesterday's trial, but please do not start me on that. Looking for a set of rear shocks for the BSA and I remember hearing that Mr Pickering supplies some modded Betors, does anyone have any information on them what makes the mod work and where I can get a pair?