GP style shift?? - Chicagoland Sportbikes
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post #1 of 37 (permalink) Old 12-01-2005, 10:32 AM Thread Starter
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GP style shift??

For a track only bike, what are the pros and cons of using a GP style shift pattern?

How hard is it to get used to?
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post #2 of 37 (permalink) Old 12-01-2005, 10:34 AM
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I never got used to it.

Pro, more sure upshifts.
con, not what you're used to. haha!

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post #3 of 37 (permalink) Old 12-01-2005, 10:41 AM
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I still have yet to make the change, but I cansee where it really can help.

Upshifts leaned over in long left handers are very difficult to do. You also get a more concise shift with a downwards motion.

The downside is forgetting you are using GP shift and causing a highside.
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post #4 of 37 (permalink) Old 12-01-2005, 10:42 AM
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especially if you don't convert all your bikes to GP Shifting as most people do.


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post #5 of 37 (permalink) Old 12-01-2005, 10:46 AM
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Pros include being able to shift the gears more smoothly, and it's possible to shift during longer corners.

Cons: It's not always possible on bikes (any modern 600 can) and it does take awhile. If you have an 'oh shit' moment on the track while learning, your gut instinct will be to revert to what you know better, probably standard shift. "Oh Shit" moments aren't as bad since you'll upshift instead of downshift (assuming you need to slow down real fast). Bigger problem is if you get carried away having fun and accidently downshift instead of upshift.

If you do it, plan on sitting in the back of whatever group you are in for the morning. May want to warn the CRs that you are toying with GP shifting so they give you some extra space. I've been thinking about doing it on the SV simply because I do find the need to shift right after the gate at Blackhawk.

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post #6 of 37 (permalink) Old 12-01-2005, 10:58 AM
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Did it, love it, would never go back.

On the track, most downshifting (5 -> 4 -> 3, etc) is done while you are upright and hard on the brakes so you pull up on the lever for this.

Since it is difficult to get your foot under that shift lever to pull up on the lever when you are hanging off the bike (left or right side), GP shift pattern allows you to just bang down on the lever for upshifts (3 -> 4 -> 5, etc) while most of your attention is focused on other things.

IMHO, you need to get used to it on the street before trying it on the track though.

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post #7 of 37 (permalink) Old 12-01-2005, 11:01 AM
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My bike came with GP shift pattern from the factory.
The only bad thing I can think of is clicking up for backshifting can be a pain in the ass as you get tired. It's more often than not that I miss gears while downshifting later laps of a race. One more thing, it also depends on the type of bike you ride. On my bike, I upshift and backshift 19 times per lap at BHF so my ankle takes a good beating. I'm sure the liter bike guys shift 4 or 5 times.

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Last edited by Chunk; 12-01-2005 at 11:04 AM.
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post #8 of 37 (permalink) Old 12-01-2005, 11:02 AM
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Quote:
Originally Posted by Reverend Rice
The only bad thing I can think of is clicking up for backshifting can be a pain in the ass as you get tired. It's more often than not that I miss gears while downshifting later laps of a race.
Agreed. Race-cut the transmission?

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post #9 of 37 (permalink) Old 12-01-2005, 11:04 AM
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I've considered changing it on the HD...but the heel-toe shifter (which is almost just like GP) complicates the fabrication

Last edited by Kruz; 12-01-2005 at 12:29 PM.
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post #10 of 37 (permalink) Old 12-01-2005, 11:06 AM
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Quote:
Originally Posted by ronhix
Agreed. Race-cut the transmission?
close ratio cartridge tranny straight from the factory as I have to change ratios for just about every track. It's more of a pain in the ass than anything.

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post #11 of 37 (permalink) Old 12-01-2005, 11:06 AM Thread Starter
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thanks for the advice guys. sounds like I'll wait.
accidently downshifting half way thru a straight or long sweeper might get messy
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post #12 of 37 (permalink) Old 12-01-2005, 11:10 AM
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Quote:
Originally Posted by Redduck21
thanks for the advice guys. sounds like I'll wait.
accidently downshifting half way thru a straight or long sweeper might get messy
chicken...

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post #13 of 37 (permalink) Old 12-01-2005, 11:15 AM Thread Starter
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yup
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post #14 of 37 (permalink) Old 12-01-2005, 11:17 AM
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post #15 of 37 (permalink) Old 12-01-2005, 11:33 AM Thread Starter
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I may not be brave, but at least I'm really slow....
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post #16 of 37 (permalink) Old 12-01-2005, 11:37 AM
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Having just gone to RoadAtlanta a couple of weekends ago... turn 4 there requires an upshift as you are going through it (fast left hander). I do NOT have GP and banged my toes into the ground a few times trying to shift in the turn. Ummm... not fun. I am switching all to GP next year, including my street ride.

With the newer bikes, most of them have slipper clutches anyway, the chances of causing a high-side are minimized. As Ron said, downshifting through a lot of gears is almost always done under heavy braking which requires that the bike is standing up. However, it would always be easier to kick another gear to go faster in the turns than to pull up to get that gear, since it doesn't require good body position, nor do you have to get your toe under the peg (near the ground in a left turn). Finally, if you are in a right turn, hanging off the bike, it is more difficult to get the toe under...

Yep, it'll be a change. But isn't that what track is all about? Changing what we do so that we can go faster, safer and smoother?

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post #17 of 37 (permalink) Old 12-01-2005, 01:30 PM
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Its a good idea to switch your street bike to GP shift and get some miles under your belt. It took me a couple weekends to not have to think about the GP shift however I would still mess up once in a while my first year riding GP shift. I blew up an engine at Grattan because I was running regular shift, hitting redline at apex of the last turn, sometimes hitting the rev limiter before I could get my foot under the shifter, and one time dropping some valves. OOOOPPSSS.

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post #18 of 37 (permalink) Old 12-01-2005, 01:41 PM
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Like the saying goes Red...JUST DO IT.

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post #19 of 37 (permalink) Old 12-01-2005, 01:55 PM
 
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Since my "new" bike came that way (thanks Ron!), I haven't switched it back. As we will only have one bike and a scooter, I'm not worried about getting confused. Plus, it will help keep "friends" off. I don't ride on the track, but I do like it better on the street (not by much, but just feels "easier").

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post #20 of 37 (permalink) Old 12-01-2005, 02:04 PM
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Quote:
Originally Posted by tdpitts
Since my "new" bike came that way (thanks Ron!)
Your welcome.

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post #21 of 37 (permalink) Old 12-01-2005, 02:29 PM
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How hard is it to change over a Gixxer 600? This might be an addition to my winter track-bike projects....

I rode a friend's 750 that was GP'd and it was interesting, and required thought, but why not learn it early before having to completely change the way you ride the track (and street)?

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post #22 of 37 (permalink) Old 12-01-2005, 02:31 PM
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Once you are used to it.... it's no big deal.

It's HELL on the streetbike for a short while.

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post #23 of 37 (permalink) Old 12-01-2005, 02:32 PM
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Easy to change the GSXR, just flip the shift-shaft gizmo over 180 degrees
so it pushes rather than pulls.

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post #24 of 37 (permalink) Old 12-02-2005, 06:26 AM
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I had my 9R switched to GP shifting two winters ago. It didn't take long to get used to shifting that way. I like it SOOO much better. Its just easier to shift up and down. At the track it makes a big difference grabbing gears by just tapping down.

When I bought my 10R I rode it home and was all messed up. The first thing I did when I got home was flip the shifter to make it GP.

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post #25 of 37 (permalink) Old 12-02-2005, 08:23 AM
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Quote:
Originally Posted by Chills
I had my 9R switched to GP shifting two winters ago. It didn't take long to get used to shifting that way. I like it SOOO much better. Its just easier to shift up and down. At the track it makes a big difference grabbing gears by just tapping down.

When I bought my 10R I rode it home and was all messed up. The first thing I did when I got home was flip the shifter to make it GP.
Main reason I haven't done GP shifting is because the CR and Triumph can't do it. No way I could keep them all straight.

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post #26 of 37 (permalink) Old 12-02-2005, 09:27 AM
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Quote:
Originally Posted by Grover
Main reason I haven't done GP shifting is because the CR and Triumph can't do it. No way I could keep them all straight.

My 50R even had GP shifting. Don't ask how, but when I bought it Tom told me that's just the way the bike was. Worked out perfectly for me at the Oval.

I agree, if you do one bike you need to do them all.

Never a bad time to climb... unless the weather is really horrible, and then you climb inside!

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post #27 of 37 (permalink) Old 12-02-2005, 09:39 AM
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Quote:
Originally Posted by Chills
My 50R even had GP shifting.
YEAH! No wonder I fell on my ass!

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post #28 of 37 (permalink) Old 12-02-2005, 09:41 AM
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Quote:
Originally Posted by BusaGirl
YEAH! No wonder I fell on my ass!

No, you fell flat on your ass because you have difficulty balancing that big melon of a head you've got while riding on a little bike.

Never a bad time to climb... unless the weather is really horrible, and then you climb inside!

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post #29 of 37 (permalink) Old 12-02-2005, 11:29 AM
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This coming season I'm going to switch the bike to GP shift. I always have a problem after the bus stop at BHF cause of standard shift.

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post #30 of 37 (permalink) Old 12-02-2005, 11:38 AM
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Quote:
Originally Posted by Chills
No, you fell flat on your ass because you have difficulty balancing that big melon of a head you've got while riding on a little bike.
I've never heard melon describing my head before.... other parts of my body yes....

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