Chain skipping on idle. What the heck? - Wrist Twisters
 
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post #1 of 28 Old 06-13-2013, 03:20 PM Thread Starter
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Chain skipping on idle. What the heck?

Hey all,
So I was cleaning and lubing the chain today. When put on stand and running in first gear to lube, I noticed my chain skipping around and some sound like it's jumping around. Never seen it before. What could it be? I said skipping gears in video . I meant just skipping
Here is the video:
919 chain skipping - YouTube

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post #2 of 28 Old 06-13-2013, 03:24 PM
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Normal. Mine did it, too. Never seemed to have any issues. Remember your swingarm is fully extended when it's up like that, which isn't the norm while riding.

And for FFFF's SAKE, I sure hope you weren't lubing that chain while it was in gear!!!

What's with people on here doing that, don't they know any better???

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post #3 of 28 Old 06-13-2013, 03:25 PM
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Quote:
Originally Posted by bpolunin View Post
When put on stand and running in first gear to lube...
With due respect...... and brace yourself here....

ARE YOU FUCKING RETARDED?!


Seriously! Why the fuck would you even try to clean or lube a motorcycle chain while the engine is running and in first gear? Are you too fucking lazy that you can't even turn the wheel yourself that its worth risking your fingers (or even hand)?

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post #4 of 28 Old 06-13-2013, 03:29 PM
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How NOT to clean your chain. **GRAPHIC PICS*** : Suzuki GSX-R Motorcycle Forums: Gixxer.com

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post #5 of 28 Old 06-13-2013, 03:31 PM Thread Starter
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OK, so whats wrong with lubing like that? I have always done it that way. And that is the way most people I know who have been riding for years do.
No, I did not clean the chain when it was running. But there is nothing wrong with lubing. I mean, you are spraying from a can. The fingers are no where close to the chain...

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post #6 of 28 Old 06-13-2013, 03:35 PM Thread Starter
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I agree that cleaning the chain like that is stupid... But lubing it by spraying out of the can? Nothing wrong with that...


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post #7 of 28 Old 06-13-2013, 03:36 PM
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All you gots to do is take a WD40 soaked rag and grasp the moving chain to clean it... Snap crackle and pop!!!!

I've never tried running on 1st while it's on a stand, but how are your bearings? Doesn't seem like it should be jumping like that.

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post #8 of 28 Old 06-13-2013, 03:39 PM Thread Starter
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Guys, all of you are missing it... I DID NOT CLEAN THE CHAIN IN GEAR!!! I know better than that. I cleaned the chain on the stand and hand turning the tire... I ran the bike when LUBING by spraying out of the can!!! Fingers and hand no where near...

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post #9 of 28 Old 06-13-2013, 03:41 PM Thread Starter
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Now, back to the question... So, is that normal or could something be wrong?

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post #10 of 28 Old 06-13-2013, 03:45 PM
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Is this a part of the country type of thing? I've never known anyone, anywhere, in my travels that did anything with the bike in gear like that. This is exactly why we have Murphy's Law.

"I never had a problem in all my years doing this until one time..." Insert your own accident here.

I'm from the Midwest, but have lived in MS, LA, NM and a few others. Not hating on ya man at all.

My Gramps used to say, "If more than 3 people tell you your sick, maybe you ought to go lay down."

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post #11 of 28 Old 06-13-2013, 03:45 PM
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Could that be bearing problems?

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post #12 of 28 Old 06-13-2013, 03:46 PM
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Ok now I went back and watched the video. Check the chain tension in several places looking for irregular stretch. If the chain is wearing evenly, I'd throw a new front sprocket on just for funzies.
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post #13 of 28 Old 06-13-2013, 03:47 PM
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FWIW: I think we get you're just spraying onto the chain, not being a knucklehead and grabbing it or wiping. But one bump...

Onto the skipping problem!!!

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post #14 of 28 Old 06-13-2013, 03:49 PM
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Quote:
Originally Posted by bpolunin View Post
OK, so whats wrong with lubing like that? I have always done it that way. And that is the way most people I know who have been riding for years do.
Quote:
Originally Posted by bpolunin View Post
But lubing it by spraying out of the can? Nothing wrong with that...
What's wrong with it? Well for starters, its fucking stupid that's what, and for a number of reasons.

1. It greatly increases the chances of you or someone else getting hurt (i.e someone bumps into you, you slip while moving around, something falls onto you/bike, bike gets knocked off the stand, etc).

2. You don't lube the chain effectively since you either miss the critical components of where the chain needs to be lubed, lube some areas not enough and others too much.

3. You fling off most of the lube before it even gets a chance to penetrate the critical areas of the chain.

4. You make a much bigger mess than it really needs to be.

5. Did I mention you greatly increase the risks of harming yourself or someone nearby?

6. The people you know who have been riding for years lubing their chain in the same way are even more stupid than you are for telling you its ok.

7. Why even take the chance, however remote it might even be? Doesn't make sense.

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post #15 of 28 Old 06-13-2013, 03:51 PM
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Quote:
Originally Posted by bpolunin View Post
Guys, all of you are missing it... I DID NOT CLEAN THE CHAIN IN GEAR!!! I know better than that. I cleaned the chain on the stand and hand turning the tire... I ran the bike when LUBING by spraying out of the can!!! Fingers and hand no where near...
lots can go wrong and very quickly in this scenario.
it's always the unexpected shit that gets ya.

I'm not going to blast you for doing what you've been doing for years, what you do is up to you, but when something silly happens or you have a brain fart, you'll pay a much higher price.

hope you solve your issue dude!

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post #16 of 28 Old 06-13-2013, 03:55 PM
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Is the chain old? Adjusted properly? I've seen ones stretch and kink before, and get spots that are tighter that you can feel when put up on a stand, rotated slowly by hand in neutral, and you can feel the tight spot. But usually they were old and worn.

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post #17 of 28 Old 06-13-2013, 03:58 PM Thread Starter
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No, the chain and sprockets are about 1K miles old. DID chain. No tight spots that I can feel. You can see that it does not jump every revelation. If it was something with the chain, I would think it would do it every time it hits that spot. But it is not consistent.

Quote:
Originally Posted by motojudo View Post
Is the chain old? Adjusted properly? I've seen ones stretch and kink before, and get spots that are tighter that you can feel when put up on a stand, rotated slowly by hand in neutral, and you can feel the tight spot. But usually they were old and worn.

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post #18 of 28 Old 06-13-2013, 04:30 PM
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[LATE EDIT]

Ok now I went back and watched the video. Check the chain tension in several places looking for irregular stretch. If you can imagine a slightly greater distance between the rollers in one section of the chain will cause the suspended wheel to try to go slower when that section crosses the sprocket fighting its on inertia. I'll bet that's what you're seeing.

If the chain is wearing evenly, I'd throw a new front sprocket on just for funzies.

BTW: The only part of the chain that requires lubrication is the place between the pin housing and the roller. Spraying the chain in motion will sling the lube out before it has a chance to penetrate. Carefully spray at an angle at the inner side plates to get the juice under the rollers.
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post #19 of 28 Old 06-13-2013, 08:33 PM
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When the tire is on pavement the effect of minor irregular chain stretch can be absorbed by the cush drive. If it's more severe, you might hear a growling from the front sprocket when starting off.
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post #20 of 28 Old 06-14-2013, 06:56 AM
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You have the rear wheel un-loaded and therefore there's very little friction to keep forward / reverse bouncing in check.
Then there's the sprocket dampeners that may add to the backlash.
When the bike is on the ground (like it's designed to be), you'll get none of the "skipping" you see with the wheel in the air.

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post #21 of 28 Old 06-14-2013, 07:53 AM Thread Starter
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OK, so took her out on a ride last night and I must say, didn't feel any skipping of jumping. I think g00gl3it and semi_gray were right. I guess I never noticed it before...

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post #22 of 28 Old 06-14-2013, 08:07 AM
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Quote:
Originally Posted by semi_gray View Post
You have the rear wheel un-loaded and therefore there's very little friction to keep forward / reverse bouncing in check.
Then there's the sprocket dampeners that may add to the backlash.
When the bike is on the ground (like it's designed to be), you'll get none of the "skipping" you see with the wheel in the air.
I think this echos my line of thinking. You have no load, the chain is bouncing to the beat of the power pulses and has no damping effect.

With the motor off, you on the bike loading the suspension, push your left heel up against the bottom of the chain and check slack that way. If you "feel" it to be tight, it is. It should have that 1-2 inch slack in it with the bike loaded.

Also, it's a "bit" hazardous to run the bike and slop the chain at the same time as there is the above tendency for the bike to buck around while up like that. If it let's itself off the stand, bills must be paid!

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post #23 of 28 Old 06-14-2013, 04:53 PM
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Quote:
Originally Posted by Bigdaa View Post
Also, it's a "bit" hazardous to run the bike and slop the chain at the same time as there is the above tendency for the bike to buck around while up like that. If it let's itself off the stand, bills must be paid!
When I installed my gear shift indicator, I needed to go through all of the gears to "teach" the unit.
I did this on a rear stand and upwards of 5th gear, I had visions of this scenario.
I shudder to think...

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post #24 of 28 Old 06-14-2013, 05:06 PM
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That's normal, It's just the slack in the chain changing locations. Give her a little back break to get some resistance on the back wheel and it will behave like when its on the ground. (Note, Not that I'm encouraging this sort of thing)

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post #25 of 28 Old 06-14-2013, 05:19 PM
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Quote:
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I did this on a rear stand and upwards of 5th gear, I had visions of this scenario.
I shudder to think...
Now imagine something going wrong on a dyno run....

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post #26 of 28 Old 06-20-2013, 01:02 AM
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Quote:
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Now imagine something going wrong on a dyno run....
It wasn't a thrown chain, at least:

Honda cbr600 engine blows on dyno - YouTube

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post #27 of 28 Old 06-20-2013, 02:25 AM
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This is a true story from another forum. A guy in Aussie asked if anybody else took the flat spot out of there tyres by sitting it on a track stand and while the bike is running, getting into the tyre with a file. He reckon it was faster if his wife hopped on the bike and revved it in top.

What could possibly go wrong?

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post #28 of 28 Old 06-20-2013, 02:33 AM
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Quote:
Originally Posted by NZspokes View Post
This is a true story from another forum. A guy in Aussie asked if anybody else took the flat spot out of there tyres by sitting it on a track stand and while the bike is running, getting into the tyre with a file. He reckon it was faster if his wife hopped on the bike and revved it in top.

What could possibly go wrong?
A file? Screw using a file, use a brick instead!

n00b tire question. - PNW Riders as seen in: https://www.wristtwisters.com/forums/...and-29313.html

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