webi Posted November 10, 2010 Share Posted November 10, 2010 Right i have opened my points a bit and my acceleration has got tons better in 2nd gear when i hit 30mph it feels like my bike accelerated quick a bit like a powerband but i dont like it because i think i should of changed gear before wonder if anyone who has had a yb100 could tell me what speed they change gear at and what speed they could get another problem is if i go into 4th it loses all momentum the engine note changes and i slow right down say i change into 4th at 45mph it will go down to 40mph and sort of stay there. all help appreciated hopefully this is my last topic about my bike Link to comment Share on other sites More sharing options...
webi Posted November 18, 2010 Author Share Posted November 18, 2010 Right i have opened my points a bit and my acceleration has got tons better in 2nd gear when i hit 30mph it feels like my bike accelerated quick a bit like a powerband but i dont like it because i think i should of changed gear before wonder if anyone who has had a yb100 could tell me what speed they change gear at and what speed they could get another problem is if i go into 4th it loses all momentum the engine note changes and i slow right down say i change into 4th at 45mph it will go down to 40mph and sort of stay there. all help appreciated hopefully this is my last topic about my bike anyone have any ideas? Link to comment Share on other sites More sharing options...
Moderator drewpy Posted November 18, 2010 Moderator Share Posted November 18, 2010 you really need to get the timing done right. opening up the points "a bit" is not accurate enough! Link to comment Share on other sites More sharing options...
webi Posted November 18, 2010 Author Share Posted November 18, 2010 you really need to get the timing done right. opening up the points "a bit" is not accurate enough! yer i think the points is the only timing on the bike so will do that tomorrow with a feeler gauge thanks drewpy Link to comment Share on other sites More sharing options...
ashley_stewart Posted December 23, 2010 Share Posted December 23, 2010 i just bought one of these yesterday a 1976 model i noticed something simular mate. i hit 50 and it seemed to slow down to about 40-45mph it should do a good 65 by my reconing. but im just learning the bike at the moment so i could be doing something wrong, my last bike was an rxs and it did this but with an engine rattle, turned out it was the woodruff key well i took the baffle out the exhaust and now\ i have alot more power Link to comment Share on other sites More sharing options...
JimR Posted January 3, 2011 Share Posted January 3, 2011 yer i think the points is the only timing on the bike so will do that tomorrow with a feeler gauge thanks drewpy with feeler gauges !!! you must really want to put a hole in the piston !!! the only accurate way of setting the timing is to set the motor at 1.8mm btdc and have the points break at that ... simply gaping the points at 12 thou at tdc will not work. in the 70's I was so glad of this advice to owners it made me loadsa cash through incorrect ignition timing, replacing pistons etc Link to comment Share on other sites More sharing options...
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