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Buell Forum » 1125R Superbike Board » Archives 001 » Archive through September 13, 2009 » Shifting a buell vs a 2009 zx6r « Previous Next »

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Lovedabueller
Posted on Thursday, September 03, 2009 - 01:30 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Ok, my buddy just bought a brand new zx 6r and i rode it. ive been told that you can shift those I4 bikes just by lifting throttle a tiny bit. and not using the clutch so i tried it. IT WORKED GREAT. and i know the reason why you can due to straight cut gears and what not.

The point and Question is can you do that on the 1125r or is it just better to use the clutch.

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Carbonbigfoot
Posted on Thursday, September 03, 2009 - 01:36 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

You can do clutchless shifts on the 1125's. Up and down. It kinda freaks me out, and I generally don't, but some people do.
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Socalbuellriders
Posted on Thursday, September 03, 2009 - 01:48 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Carbonbigfoot is absolutely correct.

I upshift clutchless all the time, though I still use the clutch for downshifts (though an occasional inadvertent clutchless downshift does happen because I goof).
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Xl1200r
Posted on Thursday, September 03, 2009 - 02:11 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I concur with the above, though I rarely do it.

Just about any vehicle can shift sans clutch going up.
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Chadhargis
Posted on Thursday, September 03, 2009 - 02:38 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I do clutchless upshifting on the track. It is quick and easy. As long as you preload the shifter a bit, then roll off the throttle a little, it will snick right into the next gear all by itself.
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Lovedabueller
Posted on Thursday, September 03, 2009 - 03:12 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

i am anxious to try it on the 1125r doing on the m2 was very ummmm clunky.
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Mrbikle
Posted on Thursday, September 03, 2009 - 04:46 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

yea, the 1125 is great for clutch-less shifts. I had a lightning long before this bike though and that transmission hated it. The 'slipper' clutch really helps with the smoothness of the clutch-less shifts I am thinking.

As the people that posted before, I only clutch-less shift up....not down.
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Froggy
Posted on Thursday, September 03, 2009 - 05:12 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I have no problem doing it upshifting on my CR, my 06 XB12 usually does it fine, but my 03 Blast will add another neutral then grind between every gear.
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The_italian_job
Posted on Thursday, September 03, 2009 - 07:57 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

it can be done with every bike, not just with the I4.
for up shifting, you have to release the throttle and shift in the next gear at the same time. to dow shift, you have to actually give a quick movement of the throttle up while you down shift (I hope I was clear, damn translations!!!!!)...
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Black
Posted on Thursday, September 03, 2009 - 08:44 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

That is what the CZ used to be famous for in 1960s motocross circles. They had such strong gear boxes, that racers would just rev them up and stomp them into first gear when they started. Their gear boxes stood up to a lot of abuse, but even they weren't indestructible. Be nice to your transmission.
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Jdugger
Posted on Thursday, September 03, 2009 - 09:45 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

> The 'slipper' clutch really helps with the smoothness of the clutch-less shifts I am thinking.

No, they are not related. And, there's not really a slipper clutch on the 1125r, either.
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Zac4mac
Posted on Thursday, September 03, 2009 - 10:37 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Use the clutch for first and second.
3rd thru 6th and back down.... just match rpms.
I use my clutch about half the time anymore, even less in winter.
That clutch lever really pulls the warmth out of your fingers.

21.5 k miles and no transmission explosions yet.

Z

(Message edited by zac4mac on September 04, 2009)
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Xodot
Posted on Friday, September 04, 2009 - 04:45 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Used to do clutchless shifts with my car when it was old, don't have the nerve/need to try it on a new toy. It's just a matter of matching engine speed with road speed.

I think I read in the manual that the 1125r clutch is in fact a "slipper" clutch.... but I confess I don't know what "slipper" means. Will someone tell me?
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Betzy
Posted on Friday, September 04, 2009 - 10:03 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

This is from the owners manual on this board, gotta love it!
I am on the track and i love my vac assisted slipper clutch!

Drivetrain: 2008 Buell 1125R Models

COMPONENT


TYPE

Transmission


6-speed

Clutch


Hydraulic Vacuum Assist (HVA) Slipper Action

Front sprocket


Compensated

Final drive


Belt
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R2s
Posted on Monday, September 07, 2009 - 12:36 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I do clutchless shifts all the time street and track on this bike. it is one of the best cluchless shifting bikes I've riddin. And It is not bad for it. Of course you have to be moving first so you cant do it in first.

When you reduce throttle you build vacuum and the clutch will partially release making for very smooth upshifts with only backing off of the throttle a slight bit. Clutchless down shifts can be done but are hard to do smooth, so I wouldn't recommend them.
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Fresnobuell
Posted on Monday, September 07, 2009 - 02:27 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Don't you guys get neutral when going from 1st to 2nd and no clutch?
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Smoke
Posted on Monday, September 07, 2009 - 10:40 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

no to the neutral question. it slides right past.
tim
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