| Author |
Message |
    
Yooper71
| | Posted on Wednesday, September 19, 2007 - 09:03 am: | 
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Bike recently developed a problem that feels like it's in the drive side of things. Has a rhythmic surge/skip when under power and moving. I thought the primary chain might be loose so I checked that, not the problem. Took things farther apart and replaced the detent and looked around but found nothing. Buttoned it all back up, problem still there. Don't know what to look at next?? |
Mikej
| | Posted on Wednesday, September 19, 2007 - 10:54 am: |
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You might check the condition of your final drive small pulley/sprocket and also the condition of the final drive belt teeth. |
Sparky
| | Posted on Wednesday, September 19, 2007 - 01:52 pm: |
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Hmmm, does the rhythmic surge seem to be kinda at a wheel turning speed or a little faster? If a little faster, I'm thinking it might be a tight spot in the primary chain, or maybe a loose section. Check the chain at various spots for a consistent spec adjustment value.
While you're looking at the final drive sprockets, spin the wheel and see if the rear sprocket is concentric wrt the axle. Should be no wobbling. If it is not dead-nuts concentric, that would result a gentle rhythmic surge upon accelerating.
Maybe you've heard other bikes with a waaaeeeaaaeeeaaaeeeaaa sorta exhaust sound? Tight/loose spots in the chain can cause that. |
Yooper71
| | Posted on Wednesday, September 19, 2007 - 02:02 pm: |
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Thanks for the ideas. I'm going to look closer at the chain when I get home. It's all apart and on the bench now. |
Firemanjim
| | Posted on Thursday, September 20, 2007 - 01:39 am: |
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Rhythmic with rpm or speed? |
Yooper71
| | Posted on Thursday, September 20, 2007 - 11:09 am: |
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Thanks Mikej, the belt seems to be problem. Took a look-see last night quick and there's a section of belt missing... I wish I could remember to always start with the simple stuff, oh well. Time to put it all back together. |
Mikej
| | Posted on Thursday, September 20, 2007 - 11:27 am: |
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The good news is that the S2's are one of the easier ones to change a belt on.
The potential bad cautionary news is that some folks have had some issue with removing the screws/bolts that hold the sideplates on. Hammer tapping, good fitting tools, occasional heat, and worst case drilling out the screw head have all been used to variable success, and a few fortunate people have had no issue at all removing the screws. Hope you're one of the fortunate ones in that regard as I think you've already removed enough screws for this project so far.
At least the bike didn't leave you stranded someplace like it did one S2 owner in morning rush hour traffic getting onto a freeway if I remember the posting correctly. |
Bluzm2
| | Posted on Saturday, September 22, 2007 - 10:23 am: |
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Yoop,
When you go to remove the right side plate, use a punch on the bolts first.
Use one that just fits in the hex socket, then give it a couple of good pops with a hammer.
You may also want to access the back side and squirt a little "bolt ease" in each hole. Then give the bolts a hit as outlined above.
I did this when mine were stuck, got 2 out of the 3 to come out, 1 had to be drilled out.
Good luck!
Brad |
Yooper71
| | Posted on Thursday, September 27, 2007 - 08:41 am: |
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Managed to get the right side plate off no problem last night. When I was talking with my dad about what I was up to he gave me his Wagner heat gun and said use this, I figured I'd give it a try. I heated up the bolt with it for a couple minutes and they came out without any resistance, really slick.
Finally going to get around to finishing this project and hopefully getting some riding in. |
Mikej
| | Posted on Thursday, September 27, 2007 - 09:09 am: |
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Snap a couple of pics if you can, really helps folks see what's going on with these bikes. |
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Troubleshooting (Poor Starting/Running/Handling/Ride Issues) »
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S2 Drive Surge