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Old 12-05-2005, 11:30 PM   #1
 
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Play in front sprocket

So I take my rear wheel off and clean up my chain and sprockets. I notice that my front sprocket has some play in it. Not in the direction of motion but some wabble when there is no chain slack. I checked the torque on the sprocket bolt and it is fine. Is this normal?

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Old 12-05-2005, 11:48 PM   #2
 
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Re: Play in front sprocket

What do you mean by no chain slack? There should always be chain slack.
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Old 12-06-2005, 12:12 AM   #3
 
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Re: Play in front sprocket

Originally Posted by EatnAsphalt
What do you mean by no chain slack? There should always be chain slack.
I'd guess he's talking about with the rear tire off....thus no pressure on the chain.
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Old 12-06-2005, 1:02 AM   #4
 
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Re: Play in front sprocket

I thought front sprockets were designed to have a little lateral wiggle? THat's what I remember from wrenching on dirtbikes as a kid, could be wrong though.
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Old 12-06-2005, 4:11 AM   #5
 
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Re: Play in front sprocket

Originally Posted by phobiaphobe
I thought front sprockets were designed to have a little lateral wiggle? THat's what I remember from wrenching on dirtbikes as a kid, could be wrong though.
Yeah, I seem to remember that as well. Just wanted to make sure it was still true for sport bikes.
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Old 12-06-2005, 3:52 PM   #6
 
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Re: Play in front sprocket

Yeah, I changed my front sprocket a month or two ago - the dealer sold me an aftermarket unit for about a third the price of the original (apparently they don't even keep the original in stock)...anyway, the original sprocket had a large rubber bush on each side to cut down the sideways movement while the replacement was just a bare steel sprocket and consequently when the sprocket nut was torqued the sprocket could still move around a little - not so much of a wobble, but a bit of side to side. I fugured this actually wasn't a bad thing as it would provide a bit of alignment tolerance etc.

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Old 12-06-2005, 6:30 PM   #7
 
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Re: Play in front sprocket

The rubber is to keep the noise down as well.
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Old 12-07-2005, 12:40 AM   #8
 
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FRONT SPROCKETT!!!!

My front Sprocket was wobbling as well , And when I removed it i noticed that the ** INTERNAL SPLINE ** Had wear on it !!! So i replaced it with a AFTER MARKET Sprocket I Also noticed it is Held in Place with a
** SPRING WASHER ** Between the Nut and the Sprockett. The Spring Washer is supposed to be Slightly CUPPED so when you Tighten up the Nut it put's Pressure on the Sprockett to Hold It in Place ** take out Wobble **
The Washer on My 954 was flat so i showed to the Local HONDA Mechanic and he told me it is a Common Problem and to replace the washer and it would take out any Wobble.
It took it a Step further and MACHINED up my own Washer out or 4140 steel and made a COUNTER BORE in the washer with a 1/8" land that fit's against the Sprockett . This does the same thing as a spring washer but will never collapse!! I noticet I have less Drive train Lash and It also is a Bit smoother as well ,
I used to Have a bit of a Clunking noise in the Chain when I Have the rear tire of the Ground on my rear stand When I was rotating the rear tire by Hand to clean / lub the Chain , This has also Gone away as well!!!!
Since then I have done the same Mod to two of my freind's 954's with the same result's!!!! ** so check out ** the washer ** , Put a straight edge across it if it's flat REPLACE it and you will have no wobble and a less noisy CHAIN DRIVE.
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Old 12-07-2005, 5:51 AM   #9
 
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Re: Play in front sprocket

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Old 12-07-2005, 12:17 PM   #10
 
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Re: Play in front sprocket

Originally Posted by Baketech
What is the banging head for?
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Old 12-07-2005, 2:22 PM   #11
 
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Re: Play in front sprocket

Originally Posted by jaim
What is the banging head for?
Because he enjoys it. I'm sure all the talk about chains and lash(es) got him all worked up with no one else around to lend a hand.
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Old 12-07-2005, 2:36 PM   #12
 
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Re: Play in front sprocket

Originally Posted by jaim
What is the banging head for?
One of my pet peeves is when something that isn't broken gets "fixed", and that "fix" gets passed on as gospel...

The axial play in that splined connection is there by design. Taking it away compromises it's performance...

No offense "Machinist", but that's not a good mod...
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Old 12-07-2005, 10:36 PM   #13
 
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AXIAL PLAY!!!!

Originally Posted by Baketech
One of my pet peeves is when something that isn't broken gets "fixed", and that "fix" gets passed on as gospel...

The axial play in that splined connection is there by design. Taking it away compromises it's performance...

No offense "Machinist", but that's not a good mod...
I still Have AXIAL PLAY ** ( 010 " ) ** On a Dial indicator. Before the Mod It was at ** ( .075 " ) ** A new un worn Sprockett on a 954 Should Have
** ( .010 " to 015 " ) ** So the Mod put's it with in TOLERANCE and is a Much stronger set up
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Old 12-08-2005, 6:15 AM   #14
 
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Re: Play in front sprocket

What does the sprocket being "unworn" have to do with axial play...
(If you have enough cheek wear to affect axial play, then you have other problems to worry about.)

Before we get started, maybe we should clarify if we are discussing axial or radial...
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