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TECHNICAL MOTOBRICK WRENCHING In Remembrance of Inge K. => The Motobrick Workshop => Topic started by: ludwig on December 15, 2014, 02:26:39 PM

Title: 94 k75s upshift without clutch lever
Post by: ludwig on December 15, 2014, 02:26:39 PM

Hello,

Returning from a ride yesterday noticed that my transmission upshifted without pulling the clutch lever....between 1-2, 2-3 when I was "pre-loading" the shifter.
I had not noticed this happening the last times I attempted "pre-loading" the lever ( for smoother shifting).

The lever has about 5 mm of freeplay before engaging.

Thanks for any advice.

Title: Re: 94 k75s upshift without clutch lever
Post by: TimTyler on December 15, 2014, 02:32:51 PM

Pre-loading?  Your lifting the shift lever without pulling the clutch?

Title: Re: 94 k75s upshift without clutch lever
Post by: ludwig on December 15, 2014, 02:41:01 PM

Yes, just a little bit sometimes makes it smoother.

Title: Re: 94 k75s upshift without clutch lever
Post by: johnny on December 15, 2014, 03:54:31 PM

i often upshift and downshift without using the clutch... its a speed rpm thang...

j o

Title: Re: 94 k75s upshift without clutch lever
Post by: Motorhobo on December 15, 2014, 05:00:05 PM

Quote from: johnny on December 15, 2014, 03:54:31 PM

i often upshift and downshift without using the clutch... its a speed rpm thang...

j o

Me too...I speed-match the rpms with the the target gear and shift. I do work the clutch some but it's just a formality, I don't think I squeeze hard enough to get much past the free play range.

Title: Re: 94 k75s upshift without clutch lever
Post by: ludwig on December 15, 2014, 06:42:21 PM

OK Thx guys, was not sure if it was something of concern, but apparently not.

Cheers

Title: Re: 94 k75s upshift without clutch lever
Post by: HYPERR on December 18, 2014, 12:16:25 AM

Quote from: Motorhobo on December 15, 2014, 05:00:05 PM

Me too...I speed-match the rpms with the the target gear and shift. I do work the clutch some but it's just a formality, I don't think I squeeze hard enough to get much past the free play range.

Same here.  You really only need to squeeze the clutch to the friction zone, no more.  It shifts much smoother that way. 

As for the clutchless upshifts, I do it on occasion.  Load the shifter slightly, close the throttle just a smidgen, and it always snicks into next gear sooo smoothly.