hdscarbro Posted April 18, 2019 Report Share Posted April 18, 2019 I've been pining for more flywheel mass on my TRS125. A commercial flywheel weight is not available. Here's the solution I came up with. On my 125, there's about 5mm space between the flywheel and the crankcase. I machined a 4mm disc from mild steel that attaches directly to the back of the flywheel via tapped holes added to the flywheel. I haven't ridden the bike too much yet. My first impression is that perhaps for me the weight should be a bit less. This one weighs about 11oz. Does anyone know what is typical for a 125? 2 Quote Link to comment Share on other sites More sharing options...
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