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Buell Motorcycle Forum » Old School Buell » Archive through July 07, 2008 » Snap crackle please no pop! « Previous Next »

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Oldog
Posted on Sunday, June 08, 2008 - 09:26 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

for some time I have had an issue with take off. 1st gear will snatch, jump lurch, on ocasion I get a pop.

Saturday I took more slack out of the belt its just under 2" wheel unloaded.
the wheel is dead square to the frame
If I vigorusly launch it will do this jump lurch etc SOME TIMES this one is puzzling me

I susspect serveral possibles.

1. the good year belt is not compatible with the old pullies, chrome is already coming off rear one with less than 4k miles
Belt jumps over front or rear teeth.
swing arm adjust is with in .005" square/
slack is 1 7/8" @ 10 lbs

2. suspension issue (wheel hop)

3. clutch cable / adjustment
plates LOOK good and the grenade plate is out.

4. Can the primary jump?

5. wheel spin?

the lurch usualy happens when the clutch goes out, leaving a stop light

The hop/pop on LAUNCH or a LOFT attempt.
this may or may not happen leaving a light.

I had a pop today on one take off and a lurch on one take off rode 55 miles.
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Dfbutler
Posted on Monday, June 09, 2008 - 07:59 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

My 99 S3 does a similar thing. I've tried adjusting clutch, primary chain and it seems to go away and all of a sudden it's back. Mine is a lurch and a clunk. It seems to happen when it is cold more often.
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Blackm2
Posted on Tuesday, June 10, 2008 - 01:02 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Swingarm isolators?
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Oldog
Posted on Tuesday, June 10, 2008 - 07:56 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

The isolators have no effect on swing arm / engine alignment, loose bearing "plug" ?

lurch / Clunk I get the lurch like the clutch "bounces" I am going to add some slack to the clutch cable. its not as bad
I wonder if the cable is going bad? the outside end is ok.
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Jos51700
Posted on Tuesday, June 10, 2008 - 08:37 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

The chrome coming off the pulley's is not a bad thing...It happens to every bike I can remember seeing. After seeing a few thousand bikes, I consider it normal.
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Brinnutz
Posted on Wednesday, June 18, 2008 - 02:15 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Hey, mine does it too!

Weird...
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Xldevil
Posted on Wednesday, June 18, 2008 - 04:39 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Experienced that issue on my M2 and my Sporty as well.
I changed the gears of first and fourth on the main and countershaft on both bikes.
Went to Andrews gears.
The problem is history since then.
Ralph
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Oldog
Posted on Wednesday, June 18, 2008 - 10:38 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Thanks Ralph!
1st & 4th?
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Xldevil
Posted on Wednesday, June 18, 2008 - 11:10 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Yes,their drive dogs are engaging while shifting into first.
These slightly outworn dogs have been causing the problem on my bikes.
Ralph
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Jc000
Posted on Thursday, June 19, 2008 - 02:23 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Wow, I spoke to this issue in a thread called "Tires and Traction" under the M2 folder. I thought that maybe I was just losing traction at the rear wheel due to tire grip.

If I'm reading this right, in first you are experiencing a lag and then a jump, sometime accompanied by a backfire(?). Sound accurate.

If that's the case, could X1devil provide more detail in your solution? Is this ("changed the gears of first and fourth on the main and countershaft on both bikes") something that could be done with just the service manual as a guide?
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Xldevil
Posted on Thursday, June 19, 2008 - 02:32 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

As long as you got the Clymer(5 speed Sportster manual) or the OEM Buell/Sportster service manual at hand,you can fix it yourself.Follow the books step by step.
Read and reread the chapters before you work on your tranny.
Take care that you have the necessary tools and small parts.
I did it for the first time and had no probs.No rocket science!
Ralph
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Xldevil
Posted on Thursday, June 19, 2008 - 02:39 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

This gripper was very helpful
to get them snap rings off and on.

Zange


snap ring

Ralph
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Oldog
Posted on Sunday, June 22, 2008 - 03:45 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Hey Ralph I will tackle this this comming winter its ridable,
so I understand it you replaced the 1st & 4th gear sets.
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99cyclone
Posted on Sunday, June 22, 2008 - 03:56 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Ralph is right about the special tool for the gear retaining rings. I just replaced a couple gears in my S1 transmission. Those snap rings are nearly impossible to remove without the right tool.
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Blackm2
Posted on Sunday, June 22, 2008 - 04:08 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Where'd you get that tool Ralph?
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Xldevil
Posted on Monday, June 23, 2008 - 12:43 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

It´s made by Stahlwille in Germany,but available in the US:
http://www.stahlwille.com/

P/N 65474170

Ralph
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Blackm2
Posted on Monday, June 23, 2008 - 03:44 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

wow, I'm sorry I asked. I could be spending a lot of money on that site. Cool stuff! Thanks!
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