I’m excited to hear your feed back on how the big gx 420cc performs. I’m thinking if you liked your sons, you’ll love double down size. Did you put 40 series on both engines? The 30 series is so popular with the 212cc for the tav2 style mount plates. What final drive ratio are you planning for the chain sprockets? That looks like a pretty big tooth count for around 5:1 or so. Will you be trying any adjustments to the driven pulley spring settings? They seem at a nice stock 1,500rpm stall start, although it would be pretty easy to adjust up to 1800 or more. I guess it would add a harder launch but may slightly reduce response time, but nuttin two foot driving can’t fix. Just things if you end up Messing with I could benifit from your trials. I really like the adjustments available with this system. Or you could wait on me to test settings..haha I would imagine it would be plenty warm by the time I’m done tho.
Ton of axles out there. I would have gone tubular and Aluminium had not gone with the heavy v twin. I doubt you need my advice, but I’m never short an opinion. Are you leaving the yerf class spline axles?