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Micheal
Posted on Friday, April 16, 2010 - 01:36 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Ok, I checked out an old thread on back tire locking up for a brief sec. during downshift.

So if I de-noid my 1125R this will help back tire from breaking free while downshift heading into corner?

If I don't de-noid but go with EBR ECM gas pump with a pipe will this fix my problem?

I don't mind the break free, but it's crap on the road that make me wonder how much risk I am at!

I could use some new insight on this

please feel free to voice your opinions on weather im just riding wrong or way's to fix this like a clutch bleed ect...

Thanks,
Mike
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Mr_wizard
Posted on Friday, April 16, 2010 - 07:21 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

match the engine rpm's to the gear you are shifting into.
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Nevrenuf
Posted on Friday, April 16, 2010 - 08:14 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

do you give the throttle a wack when your down shifting. i tried telling my buddy that for the longest time and he never got it.
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Ratbuell
Posted on Friday, April 16, 2010 - 08:41 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

It's called rev-matching. Blip the throttle the same time you have the clutch pulled in. You should be off the throttle before you're off the clutch, and the faster-spinning engine will help keep the rear from momentarily locking up.

If you think it's bad on an 1125...you should try it on an XB or a tuber! The slipper clutch in the 1125 makes it a MUCH smoother transition compared to the ol' aircooled lumps.
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Cyclonemick
Posted on Friday, April 16, 2010 - 08:56 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

I always thought with a slipper clutch the need to blip the throttle was absolete. AM I wrong? I have always blipped the throttle on my M2 but have only ridden the 1125 on a brief test ride which was a really slow and dissapointing test ride! Don't all 1125's have the slipper clutch?
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Lovedabueller
Posted on Friday, April 16, 2010 - 09:15 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Yes a Slipper clutch will help eliminate this problem....however it only really works at high rpm on the 1125r.. i have
downed from 3 to 2 and the rear started to back in for a sec or two....thats my .02 with the 1125r slipper... I TRY TO ALWAYS REV MATCH AT HIGH RPM THOUGH.
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Metalrabbit
Posted on Friday, April 16, 2010 - 09:24 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

I only had the slipper function a couple times but it was when I really needed it. You have to stay off the rear brake tho, and it don't work just stooge ridin' the thing. It was made to function in the manner the bike was designed to be operated. That operation is some pretty hot rock riding I assure you.
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Sifo
Posted on Friday, April 16, 2010 - 11:29 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

+1 on blipping with the downshift.

I was hoping someone would explain the "de-noid" thing? Is that something specific to the 1125? I never heard of it.
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Jeepinbueller
Posted on Friday, April 16, 2010 - 12:54 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

On the 1125's there is a solenoid which closes one of the throttle bodies in a certain gear at a certain RPM to quiet the engine/exhaust/intake noise for EPA standards. I believe the "noid," as we affectionately call it, kicks in at around 4,000 RPM in 3rd gear under aggressive acceleration (think high on-ramp). That's just how I understand it.

"De-noiding" is unplugging the electrical connector to that solenoid and replacing with a resistor (available from Buell) instead to trick the ECM into thinking the noid is still operational ... this bypasses a CEL from popping up.

Most people remove the entire solenoid assembly as it weighs a couple pounds which also lightens the effort required to open the throttle.

I've de-noided mine after it kicked in the first time ... it's like losing 50% of your power when you need it the most (passing, etc). Scary as hell. I left it in there though .. just disconnected it and installed the resistor.

EDIT: oh, and I always rev-match on a downshift. Only had the rear lock up for a split second on aggressive (read: high RPM) downshifts, and it doesn't even phase me since it's so quick.

(Message edited by jeepinbueller on April 16, 2010)
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Sifo
Posted on Friday, April 16, 2010 - 01:19 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Thanks Jeep! I haven't really kept up on the 1125 stuff. I wonder if the noid was acting up on the 1125 that I test rode. A couple of times it just refused to make power just like a cylinder was switched off, then WHAM! I mentioned it to the salesman who acted like I had no clue. Most of the ride it worked just fine though. Amazing bikes, just not what turns me on, so I don't follow them closely.
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