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About trialsrfun

  • Rank
    Advanced Member
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Previous Fields

  • Bike
    Beta, Bultaco, Cub
  • Club
    Macc Trials

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  • Location
    Midlands UK
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10,468 profile views
  1. Quite agree but buy a good grease gun, these are excellent...
  2. I think the piece you are interested in is here,
  3. What is the belt life on the clutch conversion, is a tensioner required also what would be the equivalant sprocket sizes compared to chain drive.
  4. John never found it a handful.
  5. Hi Rhodri welcome to TC. If you do not mind travelling to derbyshire for a training day have a look on either the dales classic website or mansfield maun (the two clubs have merged) they have some very good trials tuition days in the peak district. In my opinion the Beta Rev is a good bike choice, which trials are you riding in?
  6. A bit late to be of use to you but blocking the exhaust outlet builds back pressure and stops the engine running.
  7. Deryk the bike Martin is riding in the picture you have posted is a Montesa not a Bultaco as you state.
  8. A Beta 200 if you can find one would be the perfect bike.
  9. Bike looks fantastic a great resrstoration job. I too think compression ratio was causing the problem, Greeves produced similar looking cylinder heads with very different combustion chamber shapes for all types of motorcycle sport.
  10. I have a Sprite frame not a complete bike for hopefully a future project. I never have much success posting pictures here on tc but my frame is much the same as your one.
  11. The purchase price may have been reasonable but on my frame the quality of the brazing is exceptionnaly good.
  12. Some interesting Sprite info here
  13. I have a similar Sprite frame, someone suggested it was possibly 1966/67 the last ones made 1968/9 did not have the tubes fron the swing arm pivot to the under seat tank area.
  14. Must be a late MAR then which would have been silver.
  15. As far as I know all MAR models had a silver frame, the first TR77 had a black frame which changed to green when the Verde (green) model was introduced. Are the upper shock mounts level with the lower side panel screws on your frame, on the TR77 they are near the top screw.