Mid USA trans gear set...
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From: Canada
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From: Niles Canyon Ca.
That's exactly what I want.....
I titally agree.....65 is the sweet spot of the rpm and smoothness of my motor. It's not a stocker either.. 9.0:1with a little head work and an A2 cam (72/68 on the dyno). But there are times when (for short periods to keep up with todays newer bikes, my buddies....) I could use a little less on top that's why the 51 to a 50. I know it's not a lot but it is better than what I have.... Every sunday theres anywhere from 8-15 of us and when on the highway, they like to go..
I titally agree.....65 is the sweet spot of the rpm and smoothness of my motor. It's not a stocker either.. 9.0:1with a little head work and an A2 cam (72/68 on the dyno). But there are times when (for short periods to keep up with todays newer bikes, my buddies....) I could use a little less on top that's why the 51 to a 50. I know it's not a lot but it is better than what I have.... Every sunday theres anywhere from 8-15 of us and when on the highway, they like to go..
Your confusing me here you say you want to run with your buddies but want to drop the gearing ratio's. Dropping the ratio's will lower the top end and raise the rpms considerably at highway speeds, you'll never make a shovel compete with the way the twinkies run, it's a whole other animal. You can get them off the line and strain to keep up at speed or chase a bit off the light and run with them at 75 won't get both with a 74 or 80" inch motor and 4 speed. One tooth on the rear you'll never notice, drop it to 47 or 48, little difference on the hole shot but big help at top end.
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From: Poolville
Twisted, my first gear will be going to 8.71 from 8.36 which will give me a little bit lower gear for first but by decreasing the rear sprocket by one tooth I'll be going from a 3.42 to a 3.35. so a lower gear in first and a higher gear in fourth is the total outcome...
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From: la la land jerzey
he was talking engine balance numbers and we set at 57 % percent - S&S with equal weight wheels comes out to be 60 %
but until the very late shovel they were always two different weight flywheels - the center of the percentage is 3000 RPMs that is the best spot to be as close to perfect as you can get < best of both worlds -- smooth verses shakes - it gets to it and shakes on the way out in a gradual up and down in the RPM range - just so you know one of the rocket scientist had come up with the center balance is at RPM if its 3000 its 57 % if it lower its going up in percentage if its below its less then the 57% center
our road race buell with 7800 red line was 52 percent
but until the very late shovel they were always two different weight flywheels - the center of the percentage is 3000 RPMs that is the best spot to be as close to perfect as you can get < best of both worlds -- smooth verses shakes - it gets to it and shakes on the way out in a gradual up and down in the RPM range - just so you know one of the rocket scientist had come up with the center balance is at RPM if its 3000 its 57 % if it lower its going up in percentage if its below its less then the 57% center
our road race buell with 7800 red line was 52 percent
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Joined: Jun 2015
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From: Canada
Tough to say because predictions are rarely right, too many variables and who would've ever said someone would restore or covet an AMF bike 20 years ago?
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Club Member
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From: Niles Canyon Ca.
Dunno I've been riding the wheels off an AMF bike the last 36 years. It's a numbers game as far as collectibility goes, shovels and back had limited production numbers, twinkies are a dime a dozen, can't throw a dead cat and not hit one after bouncing off another. Give it a few more years you'll be seeing pictures of them out against the shed under a blue tarp rusting away.
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From: la la land jerzey