Re: Caution YZF600R owners.

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Subject Author Date
Re: Caution YZF600R owners. Albrecht via MotorcycleKB.com 08-26-2007
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Posted by Albrecht via MotorcycleKB.com on August 26, 2007, 11:07 pm
Pete wrote:

>With the axel bolt tight there shouldnt be any pressure on that piece.

But the end piece broke, didn't it? You cannot depend on the axle being
torqued to specs to hold the rear wheel straight.

I ruined the chain adjuster on my first motorcycle by tightening the adjuster
bolt too much, and I thought that I could still ride the bike if I tightened
the axle enough.

I was wrong, the chain pulling on the sprocket shifted the wheel, the chain
jammed up and broke a tooth off the sprocket and the chain adjuster broke in
half too.

As to the front sprocket, you wanted to keep an eye on the nut that holds it
on.
The sheetmetal lock washer is made out of a soft steel so it can be bent.

Anything soft enough to be bent will fret against the nut and sprocket until
it wears the center teeth out and it also will get thinner as it frets.

http://houseofmotorcycles.bikebandit.com/partsbandit/ShowSchematic.aspx?deptId=2419260&machineId=10519


27: WASHER, LOCK

>
>Bikes messed up. Front sprocket housing is shattered, rear of swingarm is
>shot. so is
> the rear sprocket. And the water pump or so part of that is gone cause of
>the way
>the anti freeze was pouring out. Big bucks here.

I hear your pain, Pete. I feel miserable when I break my own bikes, so I know
how it feels.

--
Message posted via MotorcycleKB.com
http://www.motorcyclekb.com/Uwe/Forums.aspx/yamaha/200708/1


Posted by Pete on August 26, 2007, 11:21 pm

> Pete wrote:
>
>>With the axel bolt tight there shouldnt be any pressure on that piece.
>
> But the end piece broke, didn't it? You cannot depend on the axle being
> torqued to specs to hold the rear wheel straight.

Yes the end piece was broken.The first snap i heard came from the rear tire
area first, then up front. What i thought originally happend was when i went
into 2nd that piece broke causing the axel to slide forward losing the chain
and the the chain slammed into the front housing. Thats what i thought
anyway.


>
> I ruined the chain adjuster on my first motorcycle by tightening the
> adjuster
> bolt too much, and I thought that I could still ride the bike if I
> tightened
> the axle enough.
>
> I was wrong, the chain pulling on the sprocket shifted the wheel, the
> chain
> jammed up and broke a tooth off the sprocket and the chain adjuster broke
> in
> half too.
>
> As to the front sprocket, you wanted to keep an eye on the nut that holds
> it
> on.
> The sheetmetal lock washer is made out of a soft steel so it can be bent.
>
> Anything soft enough to be bent will fret against the nut and sprocket
> until
> it wears the center teeth out and it also will get thinner as it frets.
>
>
http://houseofmotorcycles.bikebandit.com/partsbandit/ShowSchematic.aspx?deptId=2419260&machineId=10519
>
>
> 27: WASHER, LOCK
>
>>
>>Bikes messed up. Front sprocket housing is shattered, rear of swingarm is
>>shot. so is
>> the rear sprocket. And the water pump or so part of that is gone cause of
>>the way
>>the anti freeze was pouring out. Big bucks here.
>
> I hear your pain, Pete. I feel miserable when I break my own bikes, so I
> know
> how it feels.
>
> --
> Message posted via MotorcycleKB.com
> http://www.motorcyclekb.com/Uwe/Forums.aspx/yamaha/200708/1
>



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