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Buell Forum » XBoard » Buell XBoard Archives » Archive through April 27, 2009 » 4th 5th gear crunches « Previous Next »

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Ochoa0042
Posted on Tuesday, April 21, 2009 - 08:37 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

im not sure what to expect nowadays, the p-chain is to up to spec in tension. over the course of owning the bike i've had the problem of that crunching that everyone has experianced. maybe the problem occurs because the engine has been warmed up throughly, and at the time of the crunching the metal expansion of the chain allows this crunching crap. which i dont really understand in the first place. and sometimes i try to shift by pulling in the clutch, the crunching happens, i let out the clutch, and the crunching stills happens, and the bike is in a false neutral. how the hell does the bike get into a false neutral? im there revving my engine high feeling like my bike is retarded, the clutch is engauged supposively in a gear, and it is revving untroubled by any friction.

so what are the rules for a tighter p-chain, i need to know what i will be doing to do bike

(Message edited by ochoa0042 on April 21, 2009)
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Boltrider
Posted on Wednesday, April 22, 2009 - 12:17 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Primary chain cold: 3/8" - 1/2" vertical play
Primary chain hot: 1/4" - 3/8" vertical play

What about your clutch cable? Have you redone your cable adjustment?

(Message edited by boltrider on April 22, 2009)
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Ochoa0042
Posted on Wednesday, April 22, 2009 - 12:30 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

to me that doesnt make sense.... if everything is measured out correctly cold, when hot the tolerance shrinks? shouldnt it expand? where did you find this at?
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Boltrider
Posted on Wednesday, April 22, 2009 - 12:46 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

The tolerance tightens up a little when hot because of heat expansion. Those numbers are straight from the service manual.

Think about a piston with rings and a cylinder wall. The piston rings are a certain distance away from the wall when cold, but when they all heat up, you have heat expansion and the rings get slightly closer to the wall, so the distance from the wall when hot is smaller than when it's cold. Same idea here, just with a chain and sprockets.

(Message edited by boltrider on April 22, 2009)
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Xbrfirebolt
Posted on Wednesday, April 22, 2009 - 12:57 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

What about your clutch cable? Have you redone your cable adjustment?

Good information. I was having problems with mine, still under warranty. I took it in to the dealer, they adjusted and oiled the clutch cable. Big difference in shifting. If you haven't done yours in awhile, you should check it.

Good luck, let us know what you find.
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Rydberg
Posted on Wednesday, April 22, 2009 - 01:18 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

yeah, sounds to me like your not fully engaging the clutch or not pulling up on the shifter hard enough (or both) and it is finding this false neut. also, if your not in gear, don't high rev it. does not make the situation better. and lets say your in between gears and reving it and it slips and finds the gear. the bike is gonna jump.
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Aptbldr
Posted on Wednesday, April 22, 2009 - 01:28 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

My '04 XB still "munches" some moving between 1st & 2nd. My experiences:
Clutch adjustment & lube, better.
Preload shifter before clutching, much better (when I do it).
Adjusting shifter relative to footpeg, much better.
At only 7k miles, haven't adjusted primary; on loose side of OK at 5k mile inspect.
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Chasten
Posted on Wednesday, April 22, 2009 - 02:58 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

in between gears and reving it and it slips and finds the gear. the bike is gonna jump.

W O R D.
when this happened to me, it scared the holy bejesus out of me and almost caused a high-side. i second what everyone else said... adjust, lube, etc. with all of the troubleshooting i did on my own issue (http://www.badweatherbikers.com/cgibin/discus/show .cgi?tpc=3842&post=1394312#POST1394312), i never found a problem. but with all of the inadvertent maintenance required just to DO the troubleshooting, the problem seems to have fixed itself.}
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Ochoa0042
Posted on Wednesday, April 22, 2009 - 04:17 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

what do I use to lube the clutch cable, never done it before
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Andymnelson
Posted on Wednesday, April 22, 2009 - 04:22 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

http://www.americansportbike.com/shoponline/ccp0-prodshow/5387.html

or

http://www.denniskirk.com/jsp/product_catalog/Prod uct.jsp?skuId=&store=&catId=&productId=p3132&leafC atId=&mmyId=

(Message edited by andymnelson on April 22, 2009)
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Rydberg
Posted on Wednesday, April 22, 2009 - 04:56 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

http://www.harley-davidson.com/gma/gma_product.jsp ?PRODUCT%3C%3Eprd_id=845524448772715&default=none

use this or anything similar.
how to use:
follow the clutch cable down to the adjuster on the front of the frame. slide the cover back and loosen the nut all the way so you can pull the clutch to the grip and it doen not snap back.
then insert the needle tip of the lube and squirt it down the cable while moving the clutch lever back and forth. it should start to move more freely. once satisfied with the amout, slowly tighten the adjuster screw back till the clutch lever is pulled back into place. it should have a little wiggle but not over tight. slide the cover back over the adjuster nut and your done.
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Ochoa0042
Posted on Wednesday, April 22, 2009 - 07:41 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

oh so there is a special tool to do this.. so whats the word for a tighter p-chain?
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Ochoa0042
Posted on Wednesday, April 22, 2009 - 10:59 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

i re-did the chain tension cold, went on a two hour ride in the hottest day of the year so far at 90degrees.. brought it back into the garage and checked the tension hot, and it was exactly the same!

I didnt notice any crunches shifting up nor down, but it wasnt a very fast ride, i was a bit bored the whole time. The bikes drivetrain did feel very solid, no gaps in power delivery. I noticed that my throttle is sticking a bit and wasnt closing quick enough and am wondering if it as to do with the primary in any sort of way?
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Aptbldr
Posted on Thursday, April 23, 2009 - 07:07 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Do XB transmissions shift differently following conversion from belt to chain drive (adding drive-line 'lash')?
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