Pre-65 Bikes

Hi all, Having managed to oil up NGK B6HS at a rate of roughly 1 per trial, would it do any harm trying a slightly hotter NGK B5HS? I won't be riding the bike on the road! Does anyone else use these in their Cub? Bruce.

Was this a bargain or about right? I wish I

As per the title really,in my quest for gradual improvement of my HT5 the forks are going to get bodged... They are pretty shot really,but I'm not interested in fitting modern internals etc,I just want to get the best out of the standard setup for now.I dont want to take it to bits as it just wont get put back together,there is too much else in my workshop thats in front of it.

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.

My gearbox is worn out on my C15, can I replace all the g/box components with B25 items or are they different?

Earlier this summer,rode my HT up to Solihull British Legion where I play snooker and meet my mates, when an old chap who I`ve often said hello to but never really spoke to showed an interest in my bike. Turns out he rode in ISDT`s on Triumphs in early 60`s( Wales and Garmisch) and rode works James ( I think) at some stage. He said he rode sleeved down 175 Cubs in ISDTs amongst other things, and since then I`ve done some work at his house, where he took me to his garage and showed me a pretty impressive large cardboard box of trials/scrambles trophys from 50s/60s. He`s early 80s now but still fit and well and wonder if any old friends/foes are on here?

Hi i have my FB being built currently and need some hints on gearing sizes. The engine is 8e 197cc and has the 4 speed box. I might replace with trials cogs but, if i don't what is a good front/rear sprocket combination to get a good usable 1st and 2nd? thanks

Hi guys got a nice 400cc twin Problem is that its "wet supming" all the time Have just fitted a new morgo pump to cure but is not any different any ideas?? MartyD I could fit a tap but think that would be the last resort as im likley to forget to open it!!!

I just got my spare Cub frame from the attic to fit some strengthening plates. Before I do, is there a recognised way to steepen the steering head angle and is this a worthwhile mod? Cutting the head casting looks a bit dodgy but extending the top tube and/or shortening the down tube looks possible. Although I wouldn't have a clue by how much! I know I've got it up for sale but I find it hard to resist building things in the shed and feel another project comming on!

Hi my Francis Barnet build is coming along now but just having an issue finding a diagram for the albion gearbox. The engine was rebuilt prior to me buying it but there seems to be a few bits missing from the gearbox Does anyone have a exploded view or know where I could get one to identify the parts that are missing? Thanks

Hi Guy's. I see that Woody has his C15 for sale on e-Bay. This bike has the power in a C15 that everyone is looking for, I am currently trying to build an engine that is simular. It is a shame, I have now got most of the parts together! Or I would be bidding on Woody's bike. So if you are intrested in a bike that wins trials! I would take a look at this before it is to late? You only have four days. :thumbup: Regards Charlie.

Iam currently building an ariel ht5 using a frame from john bartrum i could do with a couple of photos of how people have mounted the footrests , or if not one of johns frames any others my email is huffysgas@aol.com thanks in advance jim

Hi all, Despite new oil pump / parts (design 1939...) Do need a "oil tap" or keep draining ~250ml before each ride.. Will kindly ask if you might have idea where to search for a tap hose/hose joint not restricting the oil flow...as tiny tap as possible, to be fitted close to the oil tank... Or I have to reweld a tap joint at the bottom of the oil tank... The "output" hose is hidden betwen the engine/gearbox... Father did assemble a rather big tap on his Pre-unit Triumph...where a lot of space is available.. Cheers,

Long ago I think I read of a method to convert RE Crusader ignition to manual control, ie the old fashion advanced and retard lever set up. Anyone with a better memory that mine out there?

Hi, Does anyone have any info on suitable mods to improve the 175 Bant power with revised port timing. Im from a road racing background but after a quick look, it seems to me the transfer timing is quite short on the standard barrel, particularly for a trials engine. Any ideas folks?

Hi, Ive just geared my Bantam down using a new engine sprocket. Does anyone have any idea what to do with the chain tension? I cant quite take a link out (its too much) so Im looking at making a tensioner. Does anyone else have similar experience? I used the 14T sprocket. many thanks for any help. cheers Stu

BSA On ebay: BSA C15 It seems a very nice bike, but if Im not mistaken that seems to be a B25 with a B25 Frame (pre oil in frame) The B25 was made 1968 onwards What would happen if you tried to enter this bike in a Pre65 trial?

Hi, Regarding visual frame design, do you know 1. the regulations for Brittish Nationals, SSDT P65......2. what is your reflections of winning bikes...or the match of the first vs the other: about visual frame design per 19641231, James, DOT, FB, C15, Bantam... *double tubes under/around the crank case? *bolted bash plate/tube replacing bended tube/tubes? Cheers,

Am looking for a pre65 project bike, Nothing too fancy just an entry level bike that doesn

Hi Guy's Just about to mount a PVL ignition stator to my Cub crankcases. Now I have thought of several ways to mount the stator including a plate between the chaincase joints etc. But have come back to the conventional pole or stud (BSA) set up. Now do you think, it is better to mount the crankcase on a rotary table, on a milling machine, and scribe a 81mm circle (pitch Cirle diameter), then spot machine three pads, and then machine and tap three alloy or steel poles, then drill and thread the crankcases to exept these poles, then machine them level to exept the PVL stator plate. Or should you make up three poles and drill and countersink the crankcase from inside an…