Author Topic: Heavy clutch  (Read 1065 times)

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Offline blackbike

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Heavy clutch
« on: June 25, 2016, 02:27:57 PM »
Hello everybody,
After not riding for four years on my souped-up CB 750 (now 850) my clutch is pretty heavy to operate  on long rides. Not due to not riding for four years but the stronger clutch springs I put in after rebuilding the engine in 2000.
Any ideas on how to make the clutch a little easier to operate?

Offline BomberMann650

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Re: Heavy clutch
« Reply #1 on: June 25, 2016, 02:48:44 PM »
Hello everybody,
After not riding for four years on my souped-up CB 750 (now 850) my clutch is pretty heavy to operate  on long rides. Not due to not riding for four years but the stronger clutch springs I put in after rebuilding the engine in 2000.
Any ideas on how to make the clutch a little easier to operate?

A hydraulic lever kit is nice to have.

Offline Dunk

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Re: Heavy clutch
« Reply #2 on: June 25, 2016, 04:41:57 PM »
I have heavier springs in my K1 as well, which always hurts my wrist after a longer ride (intense carpel tunnel like pain). Today was first ride since changing the cable the other day to a Honda cable (from Motion Pro). I noticed the Honda cable is nicer. Feels smoother to operate before installing. On the lever end it has a plastic bushing around the metal pin. I sprayed cable lube on this and lubed the cable before install. I thought the clutch felt slightly easier, and after riding a few hours my wrist didn't hurt at all. Not saying it's a miracle, and it could be my imagination, so take it for what it's worth...

Offline el pachuco

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Re: Heavy clutch
« Reply #3 on: June 25, 2016, 07:49:00 PM »
also, you don't have to run all heavy duty springs. you can run half of them heavy duty and the rest stock spring weight.

Offline blackbike

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Re: Heavy clutch
« Reply #4 on: June 26, 2016, 01:46:26 AM »
Anybody ever tried this contraption? Is it any good?

Offline Dunk

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Re: Heavy clutch
« Reply #5 on: June 26, 2016, 04:41:54 AM »
also, you don't have to run all heavy duty springs. you can run half of them heavy duty and the rest stock spring weight.

I was considering trying this. Stock springs slipped a bit when really getting on it but not under most conditions. Maybe just a little extra grip would be adequate and not increase effort so much.

Offline blackbike

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Re: Heavy clutch
« Reply #6 on: June 26, 2016, 05:05:19 AM »
Since my bike has new cilindersleeves, oversize bore, wiseco pistons and K&N filters and oversized jets it'stoo powerfull for the original clutchsprings, so I really need the heavyduty springs.....

Online PeWe

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Re: Heavy clutch
« Reply #7 on: June 26, 2016, 05:10:57 AM »
I have Barnett springs in my CB750. Now much easier clutch than with my previous HD springs + washer. I've also tried HD springs recommended for my K6 at vintagecb750 but they were very stiff, and short.

Change springs if you have not the Barnett ones in.
CB750 K6-76  970cc (Earlier 1005cc JMR Billet block on the shelf waiting for a comeback)
CB750 K2-75 Parts assembled to a stock K2

Updates of the CB750 K6 -1976
http://forums.sohc4.net/index.php/topic,180468.msg2092136.html#msg2092136
The billet block build thread
http://forums.sohc4.net/index.php/topic,49438.msg1863571.html#msg1863571
CB750 K2 -1975  build thread
http://forums.sohc4.net/index.php/topic,168243.msg1948381.html#msg1948381
K2 engine build thread. For a complete CB750 -75
http://forums.sohc4.net/index.php/topic,180088.msg2088008.html#msg2088008
Carb jetting, a long story Mikuni TMR32
http://forums.sohc4.net/index.php/topic,179479.msg2104967.html#msg2104967