gearing & speed

[jay's 400ex]

i'm jus curious to know what most of u guys run for sprocket sizes on yer bored motors. i am gettin a 425 w/ gt cam here pretty soon and i was wonderin what would be a good gearing for that. i do sum woods ridin, open field ridin and sum racing on the roads. jus lookin for sum opinions, thanx~!! peace:cool:

oh yea, and if u have any top speed guestimates along wit that too.

Jay

[yamaha1470]

most people i have seen that have some engine work and 18 inch tires run 15/36.

[tprender]

If you want to know spend with different tires and sprockets check out this
http://home.earthlink.net/~gellett/400ex.htm
I am using with my 440 engine a 16/38 and I ride only in the woods and race hare scrambles with 20 in tires. With the 16T I find that I am shifting less in the woods and in the open It has help when you felt like you ran out out gears but still had engine left.

[Scott]

You'd quickly learn to hate 18" tires for woods riding. You'd be giving up an inch of clearance at the rear axle. I run 22's on my 300, so I'd have you by 2".