FM350 wrote:Jon V8 wrote:I think in many cases it is down to form over function,people believing their bike cant run properly unless it sports a flat slide Mk2 etc.
Yesterday I rode a classic trial on my HT5,running a mk1 Concentric - it runs perfectly a real pleasure to use.Looking around at other bikes there were allsorts of carbs,old and new.I notice that the Dellorto's with clear float bowls seem popular on Cubs and Bantams now.But then those are the two bikes that seem to gain most from a carb change.A couple of other HT5's were running the Villiers carb,but not doing anything different to mine.
Apart from the fact that in most cases you cant see it,I think the ignition system is what makes most difference,a reliable spark under all conditions can be hard to gain,wheras most carbs can be made to do a reasonable job unless totally worn out as already stated.
Have you tried a modern carb on your HT? They do make a great deal of difference, and this is the main reason top runners in UK "P65" events have Jap internals fitted to Brit carb bodies.
No,I'm perfectly happy with the Concentric as I said - it runs perfectly,down so slow you think its stopped.The give it just a little whiff of throttle and its away again,wind it on and it will pull your arms out of their sockets.I dont see how it could be any better than that really,it is a treat to use.(Plus generally starts first kick too.)
My TY250's still both run their original carbs,both run absolutely fine,start easily idle steadily and have clean pickup with no four stroking etc - cant ask any more than that.
Like most trials riders,its the rider that needs to improve - the bikes are fine.