Ours? No, most originally were 3 speed C90 but in purpose made chassis. They got S90 gears minus one 4 speed boxes in them and 2 neutrals to stay inside the 3 speed rules but get better ratios. A 2mm oversize allowance meant higher compression CD175 pistons went in. There was a commendable vigour about the result.
Later on, as the C90 supply dried up, we went 110 air cooled 2 stroke/130 4 stroke. My last years as passenger were on 204, we got 3rd overall at the end of a season with 16 chairs in the championsip, and best 4 stroke. We'd have done even better if JC hadn't been such a gentleman when driving.
The XL125 head takes the XR200 cam in the Honda uprights and there are various options on compression from the pistons. Don't run avgas though, or mix it, just use the highest octane road juice you can get, or it won't burn properly.
Later on, as the C90 supply dried up, we went 110 air cooled 2 stroke/130 4 stroke. My last years as passenger were on 204, we got 3rd overall at the end of a season with 16 chairs in the championsip, and best 4 stroke. We'd have done even better if JC hadn't been such a gentleman when driving.
The XL125 head takes the XR200 cam in the Honda uprights and there are various options on compression from the pistons. Don't run avgas though, or mix it, just use the highest octane road juice you can get, or it won't burn properly.
