gregf

The Beta 200 is a great bike for lighter riders and the lower grades. I have had 2003 and 2006 models. In Australia they come without flywheel weights but with a slow action throttle. The slow action throttle is great for wheel placement in rocky creek beds but, for that steep bank after, a quick action throttle gives more confidence. It is worth noting that most local trials are set on granitic rocks with mud being very rare due to several years of drought. The standard carburettor jetting, 30 and 150 for idle and main, is the same as the larger bikes and I have changed to 27.5 and 145 which should help with the always sooty plug colour. It seems more responsive low down. I have also lowered the float level as per the Billy T advice on this site. I have used BP5ES spark plugs in the hotter weather (we had two trials this year with around 40 C temperature) to remove more heat, but one BP7ES plug lasted through winter. It has been suggested to me that the 200 would be better suited with the one tooth smaller (41T) rear sprocket that the 250 comes with. For initial acceleration I think.