What Sprockets??

[Bilko]

I'm looking advice what sprockets to use for the RB250.

It'll be used for mainly local running, two up. With occasional blasts on the motorway

Probably a PM Pipe

I also don't know what gearbox to use. I've an LI150 & a Indian GP200

Is that enough info?

[simon k]

i run 19 47 on a gp 200 box with a franspeed race. was initially using 20 front sprocket but struggled to find the right length chain.

[corrado]

16 x 47 with the Li 150 will give 4.99, GP200 with 18 x 47 will be 5.2, I wouldn't go taller than 4.99 if you're going 2 up.

[Bilko]

This is embarrassing posting this on the forum, but what way does taller work? Does it mean a higher drive ratio figure?

I've seen in Sticky's book how to calculate. I can't get my head round it though. (too thick)

Now as I'm going to be riding most the time with a heavy load I take it I need a higher drive ratio figure. Is that right?

[simon k]

rider weight is a huge factor, i'm around 65kg. but with the kit putting out around 20lb's of torque it pulls two up no problems.

[goldeneye]

Bilko, lower the number, higher the ratio.

[red]

This is embarrassing posting this on the forum, but what way does taller work? Does it mean a higher drive ratio figure?

I've seen in Sticky's book how to calculate. I can't get my head round it though. (too thick)

Now as I'm going to be riding most the time with a heavy load I take it I need a higher drive ratio figure. Is that right?

Too thick! You said it

Heavy load-do you mean you're a fat b*****d or is it all the crap you carry on it for rallies!!

[Bilko]

Thank you Red, you say all the nicest things.