Pre-65 Bikes

Hi Guys Thinking of building a Trials Bantam/ Cub & my first issue is front frame modifications. Before I decide which way to go I thought that there must be members out there who have already been down this road. Headstock angle I have a D10 front frame & want to sharpen the headstock angle, been advised to change the front down tube for a C15 tube which is one inch shorter. What headstock angle are we trying to achieve? Please suggest how best this can be done Engine mounts It's usual to move the engine mounts to the left to aid the chain run with a Cub Engine in a Bantam frame, Does anyone have the details? Also what other front frame mod's should I be…

Have a mate that has fallen in love with Triumph Twins, does anyone know who and where the Hardy Triumphs come/came from? Are they still about?

the mag on my 350 is playing up when hot,not wishing to throw good money after bad i am toying with buying a new electronic mag from BTH. is any one useing one of these, if so are they worth the

Hello, I recently acquired a 1960 Greeves Scottish. I live in Washington State north of Seattle. It is in pretty rough shape but its not locked up and most all of the parts are there. My mission is to clean it up, get it running and ride it. Perhaps get into a few pre 65 trials. As I bought her (minus the Villiers carb and air filter) Tore it down to the frame. Cylinder is on the standard piston. Bore looks ok. Will probably go first oversize. gearbox is another story....lots of cleaning needed. Gonna ditch the points and get an electronic ignition. Probably the Greeves unit. 500 bucks! Any suggestions out there? This should be a fun project. Mike

Hy from Switzerland Pre 65, although not Trial (only the rider) My father Mark had to tidy up a room to make space for his grandson. He found a pic from about 1956, showing (Scottish 6 days winner)Gordon Jackson on a 500 cc AJS at an international Motocross in Regensdorf, Switzerland, where Mark was watching. The story was, that Gordon won in the last round, because he jumped over 2 hills in the last round instead of riding through the camel bucks like everybody did (and also the former leader till last round). Don't know if its true, but sounds like a legend, nice to believe in it. However, pic is nice and probably rare. Have fun. Patrick

thinking of putting tubeless rims on a new bantam build and would be pleased to hear any comments or suggestions good or bad thanks.

I have a Tiger Cub with a pair of 32mm MP600 forks. I was told when I bought the bike that the forks were 'new'. I assuemed 'new old stock' but they could well have been new ones from Greeves who have owned the rights to Metal Profile for about 12 years now and are remanufacturing an updated version. When going over uneven ground at speed or lifting the front wheel, I get a resounding 'clunk' as the forks reach the fill extent of their travel. In other forks I have stripped, there is a short spring at the top of the valve tube to stop this, I think in the MP600's I have there is just a rubber 'bump stop' from the feel of it. I drained the forks and there was 100cc of…

Hi Fellas I am new to the forum and am asking for help in setting up my cub. It is all original comerford cub, one of the first 20 shipped to Comerfords. It is fitted with an amal 376/314 carb, I have renewed all jets but can,t get it to run without popping. I have checked all joints and they are airtight. On tick over it surges and pops and all adjustments that i have done have not managed to eradicate these problems. Any ideas, I want to keep the bike as original as possible

Lots of interest in my friends Sunbeam today at the Vmcc trial, thought I'd post a pic, for anyone interested it will be competing in the 2016 Scottish.

Anything better for polishing up alloy ?

I have had a disaster with an experimental bearing I had intended for use on a C15. I wanted to replace the timing bush with something more robust and opted to machine the inner and outer bearing components to fit a needle roller. It was with the assistance of this forum that I managed to get the bearing over from the US. Everything was fine until the machinist took about 8thou too much off of the outer bearing case (and for some reason shortened it to the same width as the bearing) making it unuseable. All the other components, inner sleeve, bearing and thrust washers are perfect. I can only find complete items with the sleeve bush in place at

A friend of mine is selling a 250 BSA in street trim.How much work and money would it take to turn it into a trials mount? Can the frame and engine be used in standard trim?

Hello all I now own a sprite trials bike and looking for more info on the bike. I think it is one of the earlier models but im unsure. The bike seems to be in very original condition even with the original fuel tank i think. Any info would be great.

I continue to be plagued by oil leaks on both my Armac Cub and my old 'bitza' Cub. Most of the oil seems to leak around the rocker covers and push rod tube. Both bikes have had various mods done to the breather system. My Armac Cub has a 230cc conversion and modern piston but I now thinking about fitting that to my old Cub and fitting a Max Heys 250cc barrel conversion to the Armac which I believe uses a modified oil return. I'm aware this mod returns the oil from the rocker area down the barrel studs rather than down the 2 small holes in the top of the barrel. I'm wondering if will help with my problem as I think this area is flooding with my current set up.…

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

Hello does anybody know where I can get the drawings/dimensions for a Ariel HT 1954 rigid frame, I have found a website which mentions Jim Susan's Bikecraft and it says he has retired. I have attached a picture

As above, for my C15... I've budgeted about £150, not bothered if the Alloy ones are lighter, just wondered what current opinions are.. I've looked back through the archives and there's fans of either, but a lot of the opinions are a few years old so things may be different now? I see a lot of Betors about, but is that because they look a bit sexier or what ? Cheers

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

HI all The bike in question is a Matchless a g3lc trials 1957 ,according to the log book. I'm looking to lower gearing although all ready a trials model still to fast in sections ,gearbox sproket all ready as small as possible i think?Is there a primary sprocket with less teeth? Any help would be very much appreciated. thank you richard

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 )