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Final Drive Ratio for 2 Up

PostPosted: Fri Mar 10, 2017 10:31 pm
by PSC GP200
HI,
I will be travelling 2 up to some of the rallies this year and was wondering what final drive ratio you would recommend. It is currently 4:8 on a 225 Rapido Classic, 30 Delly, 48 fresco and Indian GP 200 box. I was thinking going maybe 5:0 or 5:1? I also have a 48mm AF clubman I could put on, too. Thanks.

Re: Final Drive Ratio for 2 Up

PostPosted: Sat Mar 11, 2017 1:11 am
by missing lynx
I ran a rapido 225 with a 28mm delly an a sterling exhaust with std indian gp gearbox and sprockets and it pulled like a train 2s up fully loaded

Re: Final Drive Ratio for 2 Up

PostPosted: Sat Mar 11, 2017 2:51 am
by corrado
I wouldn't go taller than std Indian GP200 gears and sprockets either for 2 up. 18 x 47 = 5.2 final drive.

Re: Final Drive Ratio for 2 Up

PostPosted: Sat Mar 11, 2017 7:05 am
by Digger
I've run a Classic 225 Rapido with a 28mm Dellorto and clubman which was great for 2 up.

Same setup with a JL3 was noticeably faster 1 up but far less torque when 2 up.

Re: Final Drive Ratio for 2 Up

PostPosted: Sat Mar 11, 2017 11:39 am
by PSC GP200
Digger what final ratio were you using on that?