Pre-65 Bikes

Can someone please confirm what items are legal for pre65 scottish. I am rebuilding my cub at present and would like to keep within these regulations. i hope at some time in the future to compete in the event. I know I am stirring up a hornets nest but I need to know.

I am looking for a good workshop / reference manual for assistance in stripping / rebuilding my 1961 B40. I have the Haynes type but require something with info. any suggestions please.

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

How's this for a great looking Triumph?

Riding round the garden today on the C15 and had to reverse the bike in gear with the clutch pulled in and it wouldn't go backwards unless it was in neutral.The clutch is fine and clears all the gears,is this normal????.I have never noticed this before (recently changed gearbox camplate with upgraded part,gear change is fine),could it be something to do with the kickstart/pawl as it's action now seems further forward than it used to be. cheers the noo Brian

Has anyone got any pictures of a widened swing arm that I can use to plan my alteration. I already have the original (wider) arm, but still have minimal clearance and hence want to make the alteration. Any advice gladly received.

Hi all, Got my engine in bits at the moment and while fitting an 18t crank sprocket, I`ve found it rubs on the casing, where it protrudes for the oil seal.1st of all, is this normal? I haven`t got the clutch back on yet so I can`t put a straight edge across, although the bearing hasn`t moved, the spacer is the same, and the new sprocket is the same width as the old one, so unless it was way out before, I`m guessing I may have to relieve the casing? Secondly, I`m thinking of drilling through from the drive side into the crankcase,, a la the `Rupert Ratio` book, to provide `weir` lubrication to the drive side and possibly improve breathing. Anyone have any tips or d…

Where can I get the best deal, and which are the best currently available at a sensible price in the UK. (Tube type)

Good evening wonder if anyone can give me some advice. I have inherited a b40 off my father he took the clutch apart a few years back now. Could anyone please tell me the way the clutch plates go back in ie friction plate, steel plate, friction plate ect? And what oil and capacity should I use in the clutch/primary chain. Many thanks

Good day all, question for those in the know. I have obtained a 1964 D7 Bantam 3 speed engine in quite good condition. I have had a good look at it and think it could be worth converting to trials format. It already has in its favour a B175 barrel and head plus a modified clutch. However here are the first problems found which leads me to my questions. I would like to reduce Primary sprocket from 17 to 12 the same as my BB175. I have spoken to Rex Caunt Bantam specialist who informs me if I fit the smaller sprocket he supplies the primary chain will not line up. ? 2nd I would like to reduce the gear box sprocket ideally to 12 but the D7 has a seal housing which would not …

Just a few questions:-) I need to buy a tap and die to clean up the cylinder head studs and nuts. What size thread is it ?(Square barrel and head if it makes a difference). It looks 5/16" but not BSF Do the oil feed holes in the Rocker Spindles have to face any particular direction? The rocker spindles seem to go into the head further than my old oval head. Is this normal? The lube holes are visible on the feed end of the spindles. How many thrust washers are there on each rocker spindle? I have 1 either end of the shaft but not between the spring washer and the head but the Haynes Manual says 3. What are the inlet and exhaust valve clearances for an R cam? I…

When reading about the BSA Sunbeam (good luck in the P65 Stu) and following the story on these engines elsewhere I noticed a link to Villiers engined trials bikes. Two are of particular interest to me. Firstly the Firefly I have seen one of these ridden in local trials and thought it to be a good bike, the other is the Kyffin Saphire trials which I have heard of but never seen though I have seen a number of th Triumph engined scrambles bikes as wll as a BSA A65 powered version. The frame on the Red Rose trials appears to be a virtual copy? of the Bultaco of the same period but were any sold, has anyone seen one/got one or remember them being ridden.

Many British bikes fitted with the Amal carburettor use a round screw on air filter which usually has either a paper or gauze filter element. Which type is best though, some of the gauze ones look rather poor (you can see straight through them) the paper ones I suppose may get wet when it rains via the holes in the metal outer so which type is the better option?

Hi from Spain: I own this Pre-65 bike with a Villiers engine. Some days ago the piston blocked because it was overheated (a hot spanish day). When te engine cooled down a little it started again with no problems. Now sometimes the piston blocks for an instant. The piston looks ok, as well as the inside of the cylinder and the rings. Is there anibody that knows why and how can I stop this??? Thanks in advance.

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 Im trying to locate and buy a Royal Enfield bullet 4 speed Albion gearbox as fitted to the works bikes. I think the gearbox is the same as they fitted in the early 50’s trials and road bikes, recognisable by the separate (higher up) gear change lever. The bike I have was probably made from a late 50’s road bullet and so is fitted with the later wide gearbox, and I find it unsuitable for trials. If anyone can advise me as to where I might find a gearbox and what I should expect to pay I will be very appreciative.

Now heres an interesting one. Firstly shame on you if you didnt say hi on Friday and Saturday. Only Woodie, apart from slapshot3 who wasnt riding anyway and almost got me lost which is another story, had the good nature to say hi. He deserved a clean anyway So Vinnie whats your excuse? i saw you at the presentation so i now know who you are Any ideas who from this forum finished highest in the results?????? As far as i can see it's a certain Mr Rapley. Unless you know otherwise. So if you do let us know. Otherwise well done Hillary and for someone who said he was mostly interested in modern trials a damn good result. Anybody ever noticed how people usually look …

When up at the Two Day pre 65 Trial I saw some Bantams which looked 3 speeders but were definitely not. Am I correct in thinking it is a simple (!) case of fitting a 3 speed crank in a 4 speed c/case to get the ignition on the ‘correct’ side and using 3 speed outed casings? Our son has a B175 based trials bike and we were thinking of converting a spare engine to a 3 speed look-a-like over the winter just for something to do. Any suggestions on what to replace the old Amal carb with – make (Mikuni ?), bore etc? He will never be competing in any restricted specification events so no worry on that issue. Jim

... I have just bought a Bantam. Should be able to pick it up in a week or so, been looking around for a while and I think I've made the right choice. Very good set of gears and revs well, watch this space :-)

Hi Guy