chappo Posted March 22, 2017 Report Share Posted March 22, 2017 Out of my area of expertise, but a friend of mine is thinking of buying this bike, it's got a Triumph tank on it with what he thinks is a BSA C15 engine but the sellers not sure what to class it as. He asked me knowing I have trials bikes but my knowledge is Spanish Twin shocks so I said I'd ask on his behalf. Can anyone help him out. Thanks lads. Quote Link to comment Share on other sites More sharing options...
sparks2 Posted March 22, 2017 Report Share Posted March 22, 2017 Hi BSA engine in a Bultaco frame Quote Link to comment Share on other sites More sharing options...
woody Posted March 22, 2017 Report Share Posted March 22, 2017 That could almost be a cut up Sherpa alloy tank/seat unit ... The way the fins are cut on the cylinder makes it look more scrambles orientated as that was more in line with what they did than trials. It's a later engine due to points in the side, not distributor. Check the engine number as it will say what it is, C15, B40 etc in the prefix. If it's C15 and the letters SS or just S follow then it's a sports / scrambles motor which means big valve head and sports cam - not good for trials. It it has F or G it's a road engine which are ok if standard and not messed with. If it's T it's a trials engine but that's going to be unlikely Quote Link to comment Share on other sites More sharing options...
capper Posted March 22, 2017 Report Share Posted March 22, 2017 B25 scrambles engine?? And agree bulto chassis and homerlite seat Quote Link to comment Share on other sites More sharing options...
robido Posted March 22, 2017 Report Share Posted March 22, 2017 Looked at that on Sunday. Crank cases stamped c15s. Barrel looks like mx. Not many fins and square. It's a right bitsa Quote Link to comment Share on other sites More sharing options...
chappo Posted March 23, 2017 Author Report Share Posted March 23, 2017 Thanks lads told him to give it a miss. Quote Link to comment Share on other sites More sharing options...
robido Posted March 23, 2017 Report Share Posted March 23, 2017 Be ok if it's cheap. You never can tell with auctions Quote Link to comment Share on other sites More sharing options...
old trials fanatic Posted March 24, 2017 Report Share Posted March 24, 2017 Depends on where he plans to ride it. Best to check with the club for eligibility. Probably be ok riding on a no award basis or as a twinshock but definitely not Pre 65. As robido said if its cheap enough though might be worth a punt. Quote Link to comment Share on other sites More sharing options...
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