Last edited:
Specialized 8 Speed Rocket
- Thread starter Mrmotion
- Start date
Street Ryderz
Well-Known Member
With what gearing?I see from pic that the drive goes from shaft to the wheel rather than from the bb chain ring.
machanic
Active Member
But it does go to the rear cassette so he has shifting. But!!!
Street Ryderz
Well-Known Member
Yes it still would shift and the final ratio at between 7-8 to 1 and thats getting awful hard to turn at almost 7500 for the speed.
FurryOnTheInside
In Memoriam
You can't see what the ratio is because the sprockets on the jackshaft aren't visible and the OP has given us no information about his build, just this one blurred picture.
"Y" chain arrangement is great for reducing the drivetrain losses associated with the three chains and six sprockets in a "Z" arrangement (SBP shift kit).
However, it prevents the use of the front gears. It's a 1x8 setup, so the chainline is more cross-chained in the high and low gears than it would be on a 2x8 (which is generally used as 1x the lower 5 + 1x the higher 5).
I can't see any rocket engine. I'm disappointed.
"Y" chain arrangement is great for reducing the drivetrain losses associated with the three chains and six sprockets in a "Z" arrangement (SBP shift kit).
However, it prevents the use of the front gears. It's a 1x8 setup, so the chainline is more cross-chained in the high and low gears than it would be on a 2x8 (which is generally used as 1x the lower 5 + 1x the higher 5).
I can't see any rocket engine. I'm disappointed.
machanic
Active Member
That's why the, BUTT!!! I try to be subtle.
Mrmotion
Member
10/17 on engine side of jackshaft ,
9 tooth front sprocket 30/14 cassette
FurryOnTheInside
In Memoriam
23.23:1 low gear
10.84:1 high gear
(Including the 4.1:1 reduction inside the engine)
10.84:1 high gear
(Including the 4.1:1 reduction inside the engine)
Mrmotion
Member
yeah that's all great I don't care what the number say it works badass bro badass
Mrmotion
Member
I've hit 83 miles per hour on a downhill ,
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