Recommendation for RT195 gearing with original Taffy exhaust

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Posts: 13
Joined: Sun Nov 05, 2017 4:59 pm
Main scooter: Lambretta S2 Eibar Li150

I’m after bit of advice from you guys if possible please. I’m building a small block RT195 ( piston ported) and have an original Taffy expansion to go with it plus Italian LI150 gearbox and 46 crown wheel, MEC 58/107 crank. Could anyone recommend what final gear ratio I should be aiming at for a good touring setup (13 stone and a bit of luggage ) I want to be able to sit comfortably on a motorway at 60mph but still have a bit left in the tank of overtaking. Also recommendations of carb size. Thanks
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Posts: 262
Joined: Fri Jan 13, 2012 7:56 pm
Main scooter: GP225 Mugello
Location: Leeds / Wakefield

I would go with 28MM PHBH carb', 16/46 on LI150 box.
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