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Buell Forum » Big, Bad & Dirty (Buell XB12X Ulysses Adventure Board) » BB&D Archives » Archive through April 23, 2013 » What does the lil spring on the muffler do? « Previous Next »

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Dean
Posted on Tuesday, April 16, 2013 - 01:12 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

in struggling to put it back on - muffler installed - i don't see that it does anything?
i cant seem to find an attachment point other than small center point post on top of the bell crank the cable attaches too...
& a hole in the bracket the cable the cable threads into...
dean
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Ratbuell
Posted on Tuesday, April 16, 2013 - 01:14 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Its the return spring for the active exhaust valve.
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Dean
Posted on Tuesday, April 16, 2013 - 01:16 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

does it attach to anything that moves?
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Uly_man
Posted on Tuesday, April 16, 2013 - 01:40 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

"i don't see that it does anything?". Many a time I have found "bits-an-bobs" after working on my bikes. I just through them in the bin.
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Dean
Posted on Tuesday, April 16, 2013 - 01:47 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

i tried to find a well detailed photo or something in the service manual, but nothing clear enough to see the attachment point...
dean
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Uly_man
Posted on Tuesday, April 16, 2013 - 02:01 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

This is how it fits.



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Dean
Posted on Tuesday, April 16, 2013 - 02:07 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

the pic ive needed ! it doesnt appear to do anything! hmmmm
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Motorbike
Posted on Tuesday, April 16, 2013 - 02:14 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I'm not sure about this but I think it is an anti-rattle spring. My theory is that it keeps tension on the pivot shaft so it doesn't rattle or vibrate. If left loose without the spring, the wear on the pivot bushings would be accelerated and the looser it gets, the faster it would continue to wear. This may be all wrong though.

I'm sure Buell engineers put that weak little spring on there for a reason. I wish one of them would pipe in once in a while on this stuff.

Dean, don't give up on it. I know you can do it! Just be sure to hook the bracket end first and then pull the loop over the pivot pin with a long straight wire with a short hook bent on the end. Don't let that wimpy little spring beat you up!

PS You do have the chin fairing off for better access, right? Thanks.

(Message edited by motorbike on April 16, 2013)
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Uly_man
Posted on Tuesday, April 16, 2013 - 02:18 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)





Dean, this is how the system works. The servo opens the valve and the spring returns it and while you may think otherwise that is HOW IT WORKS.
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Dean
Posted on Tuesday, April 16, 2013 - 02:24 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

i think i can put it on without great difficulty...thanks so much y'all
dean
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Motorbike
Posted on Tuesday, April 16, 2013 - 02:29 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Okay Uly_man, how the heck does it do that?

That little spring does not pull on anything that would return the valve, the way I see it.

Dean, before you put the spring on, please check to see if the valve returns to its stop without it on there. I am just curious as it has been a while since I had mine apart. Thanks
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Dean
Posted on Tuesday, April 16, 2013 - 02:43 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

it does spring back without it - i see the value of the antivibration theory though
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Uly_man
Posted on Tuesday, April 16, 2013 - 02:54 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

"Okay Uly_man, how the heck does it do that?" It does not the spring is in the can. Sorry.
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Djohnk
Posted on Tuesday, April 16, 2013 - 03:04 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I agree with the anti-vibe theory. That's why I tool boxed it until next time I had the muffler off when I forgot mine.
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Argentcorvid
Posted on Tuesday, April 16, 2013 - 04:34 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

The manual calls it an "anti-vibration spring"
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Natexlh1000
Posted on Tuesday, April 16, 2013 - 05:07 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

So there is a second spring inside the can too?
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Panhead_dan
Posted on Tuesday, April 16, 2013 - 08:50 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

hemostats are your friend
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Ratbuell
Posted on Tuesday, April 16, 2013 - 10:06 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I stand corrected.

Neat.
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