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Pre-65 Bikes

  1. Started by sutty,

    is there anyone out there that can id my frame number for my Dot

    • 2 replies
    • 2.8k views
  2. Started by brucey,

    Hi, I'm rebuilding my Cub engine and notice that the Cam Followers have 2 small blind holes in each Follower presumably for lubrication. Do these face the back or the front of the engine, or doesn't it matter? My Haynes Manual doesn't mention rotation. I'm currently thinking towards the back to trap oil in them. I'm also fitting a blind outer Camshaft Bush. I presume I can now take the blanking screw out of the end of my side points Camshaft. The timed breather will also be redundant and I will drill a small hole from the oil return chamber into the blind bush to lube the camshaft. Any advice appreciated. Bruce.

    • 2 replies
    • 3.9k views
  3. Started by vinnied,

    What engine oil are you lads using in your trials cubs ie: Classic Semi Synthetic Fully Synthetic Vinnie

    • 5 replies
    • 2.8k views
  4. Started by vinnied,

    PRE 65 Results

    • 4 replies
    • 3k views
  5. Started by andy m,

    Is there a diagram as a starting point to set up a PVL ignition on the D14 BSA Bantam ? Thanks in advance

    • 0 replies
    • 1.7k views
  6. Started by beamish owners club,

    Does anyone know if there is a modified or purpose made swing arm and rear sub frame for the C15 / B40 trials available anywhere?

  7. Started by pat,

    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,

  8. Started by gazza7965,

    Hi Can anyone recommend someone to widen a rear bantam hub by 35mm? Really struggling to find someone who is comfortable doing it. I am in the south east but do travel north regularly thanks

  9. Started by brucey,

    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.…

      • Like
    • 5 replies
    • 6.6k views
  10. Started by totalshell,

    65 entries the week before the p65 scottish at a classic venue with streams muddy slots and hill climbs http://s887.photobucket.com/albums/ac74/to...l/25%2004%2010/

    • 0 replies
    • 1.7k views
  11. Started by stan wellback,

    Does any have a foolproof way to remove the pilot bush from a mark one concentric? thanks,. Stan.

    • 1 reply
    • 1.4k views
  12. Started by markparrish,

    HI, I am considering making an alloy oil tank for my C15. It is in a B40 frame (I think) and currently has a bodged together "standard" steel oil tank. I would like to make a narrower tank with space for a re-routed air filter and neater and enclosed electrics. I have searched the forum and found lots of snippets of good advice but wondered if anyone could help me with some "first principles"? What should the minimum advisable capacity be? What is the best return route (can it enter high up or does it have to be a tube running up inside like the standard one?) What diameter tubes should be used at the return junction to cause the right amount of oil to spli…

      • Like
    • 11 replies
    • 4.9k views
  13. Started by windlestone,

    Jock on his Triumph

  14. Started by evo boy,

    Hello all again I'm after some advice. My B40 is running 13t gearbox sprocket and 60t rear but I feel I need a but more speed on the hills. What combination are people running for trials? Many thanks

    • 0 replies
    • 1.7k views
  15. Started by fish06,

    Sorry if it's a bit basic or has been asked before but........ is there a set of rules that pre 65 bikes have to follow or do different clubs have their own? I couldn't find anything on the ACU site, in fact couldn't find much apart from the Yorkshire Classic Trials site (good site). Anybody help? Thanks.

    • 10 replies
    • 6.3k views
  16. Started by brumbie59,

    Hello - I've just Reg'd with the site and I dare say the details of my bike are visible somewhere?. Can any one suggest an active trials club suitable for 4 stroke rigid frame competition. I'm in the SE 10mls SE of Gatwick airport, so far the only lead I've had is Bognor Regis & District MCC which I need to investigate further. Any other suggestions?, thanks in advance.

    • 6 replies
    • 2.8k views
  17. Started by jon v8,

    I've just done a deal on an HT5 that has not been used for 10 years,so will need a bit of sorting out.Its basically all good with mostly the right bits,but the carb is a Monobloc. I've had bikes with these before and had no problems,but it seems they are no longer in favour,most seem to have either a Mk1 Concentric or a villiers carb. I want to get this bike to run really well,so is the original worth playing with or is it better to change it ? Which is best ?

    • 7 replies
    • 5.4k views
  18. Started by totalshell,

    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

      • Like
    • 2 replies
    • 2.1k views
  19. Started by mikey_01,

    hi all been riding on my c15, i love it! dont know why i am building a bantam?? lol any way i have a set off old betor shocks on the with with the valves on, but one is leaking bad so they just bottom out, and am a big lad, so is there any other shocks that are good and cheapish,????? other than the betor ones,

    • 10 replies
    • 3.4k views
  20. Started by hewson,

    Hi everyone I've just bought a sprite trials bike , i think its 1965 ish , as anybody got any info about these bikes ( engine spec , how much oil in the forks etc ) .....Many thanks

    • 1 reply
    • 5.2k views

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