MB RT 195 kit

[Evesy]

Got this kit fitted and am still running in. Engine spec Li150 box with 16x47 final drive of 4.9, 30 mil carb, Augusto retard unit with lightened flywheel and Dev Tour Pipe. I am thinking of changing to 17 x 46 sprockets for a final drive of 4.6. Before I split my cases does anyone think this will be to tall and / or does it work on anybody elses set up. Cheers

[cev]

I run 17/46 li 150 on mine and it pulls it no problem. 28mm phbh and taffy copy. I have a devtour but haven't tried it on the rt yet. unless you are an, ahem, fuller-framed gentleman, I'd say it should work well. Be interested to hear how it goes.

[corrado]

I'd be wary of making it too tall, unless you're using a low revving exhaust like an ADS3. Why do you feel you need to change from 4.9 which is fairly tall anyway on a sub 200 kit? If you gain at one end you'll generally lose out at the other.
If I was building that engine with that pipe I'd be trying a GP200 box with 19 x 46 and wondering if it'll work with 4.84 final drive, to give 70mph at 7,000 rpm.