5-7HEAVEN
Well-Known Member
Sprockets, chains and gearing.....
My clutch has a #41 10t sprocket.
To simplify things, I'll use all #41 gears.
They use 1/2' x 1/4" wide chain.
I choose #420 chain.
It is very strong & 1/4" wide.
#40 chain is just as strong but 5/16" wide.
Clutch 10t sprocket to 10t gearbox input.
Gearbox has 3.75:1 ratio.
Then 10t output sprocket to 27t chainring sprocket.
The ratio is 10.125:1 at the bottom bracket.
with 10.5:1 in First gear
and 5.25:1 in Seventh(final) gear.
Perfect.
My clutch has a #41 10t sprocket.
To simplify things, I'll use all #41 gears.
They use 1/2' x 1/4" wide chain.
I choose #420 chain.
It is very strong & 1/4" wide.
#40 chain is just as strong but 5/16" wide.
Clutch 10t sprocket to 10t gearbox input.
Gearbox has 3.75:1 ratio.
Then 10t output sprocket to 27t chainring sprocket.
The ratio is 10.125:1 at the bottom bracket.
with 10.5:1 in First gear
and 5.25:1 in Seventh(final) gear.
Perfect.
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