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carl ekblom

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  1. little about amal carbs https://static1.squarespace.com/static/547e5122e4b0193d67f28396/t/5854ddf6725e25b3b4c06d52/1481956877861/Amal+MK2+Carb+Manual.pdf
  2. Betor often are around 24mm wide and have sort of rubber bush installed. I don´t know how to take it out undamaged. You may have to make your frame attachments wider to accept the shock. 24mm is quite normal. If the shock has a bladder (or Internal floating piston) inside (think most of them have) best is to mount it with the cylinder facing upwards in order to keep the unsprung weight low
  3. Perhaps this fit https://www.trialsbikebreakersuk.com/products/gas-gas-txt-pro-raga-racing-replica-gp-kick-start-idle-gear?_pos=1&_sid=42834336f&_ss=r
  4. Looks to me as a Spanish Mk2. All Spanish Mk2´s I have seen are 2-stroke carbs. Body and throttle valve originally were made of zink so they will wear together and replacements might be needed. Think they do the valves in a a different material nowadays so it is worth considering. Whatever you do make sure you have the correct parts for your carb. Lot of parts around that are lookalike but will deteriorate the performance. If very expensive you may have to consider a replacement carb perhaps from a different brand.
  5. http://www.mid-atlantictrials.com/Sales.html Roger is most helpful JJH needle for 325
  6. Assuming it is a reed valve model. They MUST be
  7. Have a look at your clutch. Your clutch plates may not disengage as they should. A common problem Basket and hub must be free from notches. Plates flat and free from muck. Oil should be thin. I was using engine oil 0W-20 now HTX740(also for Bultaco Gearbox) For this check you don´t have to split the cases
  8. Mission accomplished👍😁
  9. I don´t think normal and it happened in a short period last weekend. I would investigate the cause of friction and find a remedy.
  10. Electronic ignition is the way to go to get rid of a lot of problems. Available from a number of resellers inc. Inmotion
  11. carl ekblom

    Trl200 piston

    Think those pistons can be found at ebay🤔
  12. carl ekblom

    Trl200 piston

    Is it this one https://www.aliexpress.com/i/1496360565.html ? Only rated at 5.5 hp
  13. Yes, usually a few meters backwards is sufficient to get the valve in correct position
  14. Yes, tubes are wandering inside the tyre. Tightening the rim locks doesn´t help This is a trick I learnt from a Speedway guy. Empty the tube. Push the bike backwards until valve position is correct. Fill the tube with air. This has to be repeated every 2nd occasion or so. Tubliss fix this problem as you don´t use a traditional tube. I would say "a permanent fix" at the expense of slightly more difficult fitting. Tubliss make it possibe to run tubeless tyres at tubed rims
  15. As far as I know the duplex chain also use another tensioner, clutch basket and engine sprocket. Also think the ratio might be slightly different, but I have read (somewhere) that trials people do the conversation. Original Joresa single chain is special dimension
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