RPMs & Shifting - K-Bikes.com - Excellence in Motion
 
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post #1 of 9 (permalink) Old Aug 14th, 2008, 2:38 pm Thread Starter
 
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RPMs & Shifting

What is a typical range of RPMs when you shift?

I recently noticed on my 04' GT, that when I allow the revs to hit about 4,500+ RPMs the shifting from first to second is much smoother. I'm talking typical riding, not racing around. I have been keeping the revs up for the last several tanks full and everything feels good, but my MPG has gone done considerably. I may lighten up on the RPMs again to bring my MPG back in line (except between 1st and 2nd). I always though I had a rough gear issue/problem between 1st and 2nd. Perhaps it is just riding techniques

When do you shift?
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post #2 of 9 (permalink) Old Aug 14th, 2008, 2:51 pm
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Varried answers

I have a feeling you are going to get a lot of differing opinions on this one. The excellent torque of the K bikes permits a lot of combinations.

I happen to short-shift my bike normally. From first gear I shift up to third or fourth right away. Once I get to 6th, I tend to leave it there for most conditions other than sporty mountain runs.

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post #3 of 9 (permalink) Old Aug 14th, 2008, 2:57 pm Thread Starter
 
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Someone will probably spank me for not using the search function as well. I did use it, but was not satisfied the issue was exactly the same. I have found that my shifting from 1st to second is the only trouble spot and variation of the amount or even elimination of the clutch does not solve the trouble. Only the use of higher RPMs. Thats why I was asking the specific RPM shifting question. If I knew how to make a POLL question I would do this..... Lets see where this goes.
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post #4 of 9 (permalink) Old Aug 14th, 2008, 3:07 pm
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Try pre-loading the shift lever just before you make your 1-2 up-shift. Sometime it will make an easier, smoother shift at any rpm.

Bruce C
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post #5 of 9 (permalink) Old Aug 14th, 2008, 3:25 pm Thread Starter
 
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I have read this "pre-loading" statement before. Does this just mean a little pressure before the actual shift?
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post #6 of 9 (permalink) Old Aug 14th, 2008, 4:18 pm
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Yes, you just put a gentle toe pressure on the shifter and when you hit the magic rpm (It's different in each gear) then it will just drop in. I do lazy virtually clutchless changes on the upshifts and after a while you get to know where it's going to shift up.

If I'm riding non-aggressively without pillion or luggage around town, I'll skip 2nd and go 1st to 3rd. There's loads of torque, not like a high rpm jap bike.



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post #7 of 9 (permalink) Old Aug 14th, 2008, 5:48 pm
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Quote:
Originally Posted by voxmagna
Yes, you just put a gentle toe pressure on the shifter and when you hit the magic rpm (It's different in each gear) then it will just drop in. I do lazy virtually clutchless changes on the upshifts and after a while you get to know where it's going to shift up.

If I'm riding non-aggressively without pillion or luggage around town, I'll skip 2nd and go 1st to 3rd. There's loads of torque, not like a high rpm jap bike.
...Thats what I find works best...If anything I just touch the clutch and think about the throttle...drops in as slick as dog shit on wet grass....and talk about quickness up to speed....only if you have to of corse...
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post #8 of 9 (permalink) Old Aug 14th, 2008, 8:41 pm
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Good question (for us noobs). I got my 04GT in early June, and 1st to 2nd is the only shift I have to think about. All the other seem to just happen. I am hoping that with more experience on this bike, the 1 to 2 will also be easier.
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post #9 of 9 (permalink) Old Aug 15th, 2008, 12:54 pm
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Quote:
Originally Posted by Kregg
What is a typical range of RPMs when you shift?

I recently noticed on my 04' GT, that when I allow the revs to hit about 4,500+ RPMs the shifting from first to second is much smoother.
I have 40K miles of identical behavior. Holding the shift to 2nd until rpms are above 3K works everytime, else false neutral 50% of the time. Preload doesn't do the trick for my gearbox.

Marc
Prescott AZ
2008 K1200S
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