RPM crusing
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- gordone
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Re: RPM crusing
16 May 2023 01:33
Hehe I think the RPM must be wrong then 
the clutch is solid.
will find the ratio I have now.
When I’m crusing I don’t need to go down to 3th gear to find power when passing, just usr the throtle… so I was wondering if I go smaller rear I can have less RPM and then gear down to 3th when alot more power is needed.
its 750gpz with big bore 810cc high compresson. The carb is orginal 650 carbs…
the clutch is solid.
will find the ratio I have now.
When I’m crusing I don’t need to go down to 3th gear to find power when passing, just usr the throtle… so I was wondering if I go smaller rear I can have less RPM and then gear down to 3th when alot more power is needed.
its 750gpz with big bore 810cc high compresson. The carb is orginal 650 carbs…
1981 KZ650-D4, with 1981 z750L engine (Wiensco 810 big bore).
Project:
www.kzrider.com/forum/11-projects/607213...sr-1981-z750l-engine
Project:
www.kzrider.com/forum/11-projects/607213...sr-1981-z750l-engine
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- Injected
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Re: RPM crusing
16 May 2023 05:21 - 16 May 2023 05:26
6K at 90KPH is way too high, change your gearing.
I made so much more power than stock with my 831cc bike that I had to change the gearing. Your probably about 10 HP down from what I have, I had to change gearing because I could not shift out of first fast enough.
I run a 17T front and a 38T rear, at 90KPH it revs at 4,000.
If you have enough HP it will pull strong in any gear.
I made so much more power than stock with my 831cc bike that I had to change the gearing. Your probably about 10 HP down from what I have, I had to change gearing because I could not shift out of first fast enough.
I run a 17T front and a 38T rear, at 90KPH it revs at 4,000.
If you have enough HP it will pull strong in any gear.
1978 KZ650B2 w 1197cc Z1 engine
1977 KZ650B1 w 750cc Spectre engine
1979 KZ650C3 w 831cc Hot Rod engine
1978 KZ650C2 w 762cc DFI project
1977 KZ650C1 stock restoration project
1978 KZ650B2 modified project
1978 KZ650B2 Injected Drag 831cc
1980 Z1 Custom Frame Drag 1327cc
1981 Z50R Honda tow bike
1977 KZ650B1 w 750cc Spectre engine
1979 KZ650C3 w 831cc Hot Rod engine
1978 KZ650C2 w 762cc DFI project
1977 KZ650C1 stock restoration project
1978 KZ650B2 modified project
1978 KZ650B2 Injected Drag 831cc
1980 Z1 Custom Frame Drag 1327cc
1981 Z50R Honda tow bike
Last edit: 16 May 2023 05:26 by Injected. Reason: pic
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- gordone
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Re: RPM crusing
16 May 2023 14:09
Thank you all, will collect numbers and come back
1981 KZ650-D4, with 1981 z750L engine (Wiensco 810 big bore).
Project:
www.kzrider.com/forum/11-projects/607213...sr-1981-z750l-engine
Project:
www.kzrider.com/forum/11-projects/607213...sr-1981-z750l-engine
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- Scirocco
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Re: RPM crusing
16 May 2023 16:14
The custom 17/38 final drive ratio gives you 104 kph @ 4250 rpm.
My 1975 Z 1 B 900 Project
www.kzrider.com/forum/11-projects/605133...ears-deep-sleep-mode
www.kzrider.com/forum/11-projects/605133...ears-deep-sleep-mode
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- gordone
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Re: RPM crusing
18 May 2023 01:12
It was Norwegian national day here yesterday, so sorry for the delay
Front wheel - 100/90 - 19
Rear wheel - 130/90 - 16
Front sprocket - 16 tooth
Rear sprocket - 42 tooth
Haven`t checked these up against the webpage yet.
Front wheel - 100/90 - 19
Rear wheel - 130/90 - 16
Front sprocket - 16 tooth
Rear sprocket - 42 tooth
Haven`t checked these up against the webpage yet.
1981 KZ650-D4, with 1981 z750L engine (Wiensco 810 big bore).
Project:
www.kzrider.com/forum/11-projects/607213...sr-1981-z750l-engine
Project:
www.kzrider.com/forum/11-projects/607213...sr-1981-z750l-engine
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