Tue, 4 May 1999 15:12:31 +0200
- Message No. 5631
From: Pelissero Cesare
Subject: R:Chain Shaft
Ciao!
After two days with the help of a friend I have remove the engine from the
A.T.
In the next week end I'm going to open the engine! : - (((((
The cost of the original shaft is L. 220.000 (220 DM)
I have not idea about the origin of the problem.
The chain DID is not very old and still good and I believe with the right
tension.
The sprocket is not original .
From more than 1 year I have the schottoil system and in the sprocket box
there was a lot of oil.
My driving style is very soft.
Bye bye
Cesare
> ----------
> Da: Michael Janko[SMTP:micha_janko@hotmail.com]
> Inviato: martedì 4 maggio 1999 12.54
> A: bru@iitb.fhg.de; xrv@atic.org
> Oggetto: Re: (XRV) Chain Shaft
>
> Hi guys,
>
> 67tkm, RD04, 91.....
>
> sounds like mine - with the identical problem. Not all of the teeth on the
>
> shaft are really gone and not all over but I think the only reason why is,
>
> that I checked it early enough. Cause of the costs of a repair (dismount
> whole motor incl. new shaft ~ 800 Euro) I refused to do this till now.
> With
> the teeth left on the shaft I put a new sprocket? (Ritzel) on it and fixed
>
> it with two little plates (Unterlegscheiben) under the screws of the unit,
>
> that fixes the sprocket (Sicherungszahnring) This way the sprocket is
> fixed
> better and it works on my @ since 6tkm without getting the teeth of the
> shaft ruined furthermore.
>
> Now to the point what causes the problem. The genuine Honda sprocket is so
>
> wide at the basis that fits on the shaft, that the teeth of the shaft are
> covered on full length. Most sprockets from Polo, Gericke, louis, DID ....
>
> are not so wide - they fit only on part of the teeth of the shaft. And
> they
> are of a softer material. So the power that has to be transmitted starts
> eating up first the teeth of the sprocket and then the shaft. Especially
> if
> you don't grease the teeth when installing the sprocket! Metal moving on
> metal.... don't have to talk further!
>
> So prevention: Use ONLY the genuine Honda sprocket - it cost twice the
> price
> ( ~29 Euro) of another second party sprocket - but it helps you saving
> lots
> of money!!! Check sprocket every 10tkm and grease the teeth of the shaft -
>
> it's also worth it and no big deal! As soon as you hear strange sounds
> (Mahlgeräusche) from your sprocket check it!!! I refused to do so for
> about
> 3tkm and the damage was done. If your motor is not the newest (like mine)
> the damage is done and you don't want to change the shaft or buy a
> new-used
> motor there is another solution. Get a new sprocket and fix it to the
> (damaged) shaft buy welding it on (shaft has to be changed anyway
> sometimes)
> to the shaft. If it's done correctly, this will give you another 20tkm and
>
> time to earn and save money for a repair or new motor :-)))
>
> If you need more details - let me know.
>
> Micha @414
>
>
>
> >So the question is what caused this kind of damage? chain tension not
> >low enough?
> >
> >Any ideas to prevent that damage?
> >
> >Rgs
> > Hajo
>
>
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