*GP Style Shift Pattern* - Sportbike Forum: Sportbike Motorcycle Forums
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post #1 of 12 (permalink) Old 07-19-2000, 03:40 PM Thread Starter
 
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Who has changed their shift pattern to 1 up and 5 down as apposed to 1 down 5 up? The GP racers and I think some/most american racers use this mod. What are the advantages/disadvantages of this setup? I know they use airshifters and the like so they can do smooth full-throttle shifting. So why is "shifting down to go up" better?

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post #2 of 12 (permalink) Old 07-19-2000, 03:55 PM
 
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Less time spent taking your the ball of your left foot off the peg to upshift. Takes a bit more time and effort to move the foot forward, under, and then lift shifter lever up than it does to move foot forward and step down on the lever. Especially when your trying to upshift while turning left, since your foot would get under the bike as it leans, screwing things up.

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post #3 of 12 (permalink) Old 07-19-2000, 04:37 PM
 
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How do you change the shift pattern?? My friend just boughta a GSXR 600 that was raced and has that kinda shift pattern. And I wanna do it!!


My F4 is faster than yours is!!! j/k

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post #4 of 12 (permalink) Old 07-19-2000, 07:48 PM
 
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It's pretty easy, swap the clamp at the end of the shift linkage, 180 degrees, this changes the gear pattern. Easy.


Ross cbrxx

Sorry, I thought you has a gsxr, oops you may not be able to do this?

If your gear lever comes straight from the gear box, without a linkage, (like mine does).
I don't know

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[This message has been edited by Ross (edited July 19, 2000).]
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post #5 of 12 (permalink) Old 07-19-2000, 07:50 PM
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<BLOCKQUOTE><font size="1" face="Aril, Helvetica, sans-serif">quote:</font><HR>Originally posted by taner261:
Who has changed their shift pattern to 1 up and 5 down as apposed to 1 down 5 up? The GP racers and I think some/most american racers use this mod. What are the advantages/disadvantages of this setup? I know they use airshifters and the like so they can do smooth full-throttle shifting. So why is "shifting down to go up" better?
<HR></BLOCKQUOTE>

Does changeing the shift pattern help exercise the muscles,tendons,or ligaments of the foot to prevent any possible bad affects. I am refering to anything similar to the condition a person may receive from operating the throttle.

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post #6 of 12 (permalink) Old 07-20-2000, 01:48 AM
 
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I flipped the pattern on my F3. Like they said, all you do is put the linkage 180 degrees from whence it came. I liked the reverse pattern a lot, as you could just stomp on the shifter when accelerating. It takes a little getting used to at first so you don't downshift when the rpm's are wound up. And if anyone rides your bike, remember to tell them it's reversed! I had to remind myself when I rode my friend's or brother's bike that they had standard pattern.

I can't flip the linkage on my RR due to clearance problems; I would have to buy a kit from Two Bros I think. I'd like to do it sometime, although I'm used to the "standard" way again.

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post #7 of 12 (permalink) Old 07-20-2000, 01:53 AM
 
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F4missile,

It depends on the bike. Some it is a simple flip of the clamp while others require aftermarket linkages and clamps.

It is my understanding that in the past ground clearance while your foot was under the shifter upshifting coming out of a turn. Seems like a dangerous time to upshift a bike to me.

El Diablo's explaination makes more sense to me.

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post #8 of 12 (permalink) Old 07-20-2000, 02:00 AM
 
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<BLOCKQUOTE><font size="1" face="Aril, Helvetica, sans-serif">quote:</font><HR>Originally posted by LADN:
Does changeing the shift pattern help exercise the muscles,tendons,or ligaments of the foot to prevent any possible bad affects. I am refering to anything similar to the condition a person may receive from operating the throttle.

<HR></BLOCKQUOTE>

LADN, what the hell are you talking about...Carpal Toenail Syndrome



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post #9 of 12 (permalink) Old 07-20-2000, 09:02 AM
 
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The biggest advantage, as El Diablo pointed out, is when you accelerate out of a left-hander, and you have to upshift while leaned over. GP shift makes this much easier. It's more applicable on the racetrack than on the street, of course, but since I'm used to having my racebikes set up this way, I convert my street bikes over as well.

Also, when you are downshifting before a turn, GP shift helps keep thing settled a little. With street-shift, you tend to stomp on the lever as you downshift, and sometimes it can cause you to chirp the rear tire a little if you get too excited. With GP shift, the action is a little more deliberate, and it causes you to downshift more smoothly, taking your time...

The only problem GP shift causes is when you are entering a decreasing radius left hander, and you have to downshift in the middle of the turn. Turn 1 at Daytona is a perfect example. You can't do all of your downshifting before the turn, because you would overrev the bike. So you have no choice but to catch the shift after you're already leaned over quite a bit. That can be a pain in the ass! We have a turn at Firebird like that, too. But you learn to deal with it. The benefits outweigh the losses for most racers.

On the street, though, nyehh... I don't think it matters either way.

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post #10 of 12 (permalink) Old 07-20-2000, 01:28 PM Thread Starter
 
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On the F4 I think the countershaft sproket cover needs to be modified for clearance. I can see where this would benefit a racer for his streetbike, but it seems like a waste of time for an average street rider to bother with this. I am considering getting in some track time and maybe taking a course, so I may do this now so I am used to it when I get to the track.

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