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Can anyone help me with gearing

  • Thread starter Thread starter ned-999
  • Start date Start date
N

ned-999

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Hi I have a chopper that has a gs750 e 1982 engine in it. I'm confused because the gearing seems wrong. In 5th gear at high revs I'm doing about 45 mph !! I've checked the sprockets as follows. Front 15 teeth rear 41 teeth rear wheel 17 inch. That all looks standard to me. I can't believe someone would change the gear box. Why should they. Any ideas help would be appreciated.
 
Don't have a rev counter but it's got to be 4 or 5000 by the sound of it. I can pull off in 3rd without any effort it just doesent feel correct.
 
4 or 5,000 is just getting going. The engine needs to spin to do anything.

It starts to get powerful above about 7,000.
 
ned-999 said:
Don't have a rev counter but it's got to be 4 or 5000 by the sound of it. I can pull off in 3rd without any effort it just doesent feel correct.
Click to expand...

That seems wrong, it's probably been geared too radically. Maybe your clutch is slipping? Pulling away in 2nd, fine, but easily in 3rd is a bit too low. Easy fix with sprockets.
 
I've looked at the sprocket sizes and they are 15 and 41 which is correct I think. Clutch isn't slipping. I can get bigger front sprocket 16 and 17 teeth. Would that make a difference ??
 
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