Piston 93.5 Wossner

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Mambu
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Re: Piston 93.5 Wossner

Beitragvon Mambu » Do Jan 19, 2023 8:28

...here you find some pictures:

https://www.xt500.org/68eustw03ihkmsez/ ... er#p162981

But I can send you some more if you like.

I'm sure it is a different casting compared to the DreiBuchstabenMann part.
Hans are you sure about this? I've never heard about this. I believe he used his "own" casting and also sold these to others.

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Mambu

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Re: Piston 93.5 Wossner

Beitragvon Hiha » Do Jan 19, 2023 10:06

There was a discussion about it some years ago, but I don't remember where. Ask Kuntzinger, maybe he knows more about it.

Gruß
Hans

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Re: Piston 93.5 Wossner

Beitragvon Pablo » Do Jan 19, 2023 10:16

and what about the solidity of these cylinders..

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Re: Piston 93.5 Wossner

Beitragvon Pablo » Do Jan 19, 2023 10:47

Thank you for the photos,
indeed it strongly resembles the JPX, fins above the chain tensioner, reinforcement between fins ....

here is a JPX (in the middle) and two Rayer....

the fabrications between the two are completely different.

i will ask around about JPX nikasil....


Bild
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Re: Piston 93.5 Wossner

Beitragvon Mambu » Do Jan 19, 2023 11:07

...nice photos, thanks!
The DreiBuchstabenMann-cylinders are very reliable, but the machining by 3BM is quite poor, the Pami configuration together with a CP or JE piston is much better.

Regards
Mambu

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Re: Piston 93.5 Wossner

Beitragvon Pablo » Do Jan 19, 2023 12:08

Well nice Thanks!

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Re: Piston 93.5 Wossner

Beitragvon Pablo » Do Jan 19, 2023 13:08

Hi

do you have more pics of the cylinder?

above and below...

thank you

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Re: Piston 93.5 Wossner

Beitragvon Mambu » Do Jan 19, 2023 16:58

...I posted some new pictures here:
https://www.xt500.org/68eustw03ihkmsez/ ... 60#p166560

In my opinion it must be a JPX... :wink:

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Mambu

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Re: Piston 93.5 Wossner

Beitragvon Theo » Fr Jan 20, 2023 16:45

In 2011 I bought a Mahle piston which was finished by Helmut Wahl to 93.5mm and prepared for 88mm stroke without the need of an additional cylinder gasket (2mm).
It has a complete weight of 476g incl. clips, rings and piston pin.
Cylinder is definitely RAHIER.
The price for the custom made piston was 318€ incl. taxes.

Kind regards, Theo

PS: I have a second Rahier kit which has done more than 100.000km up to now with first piston and rings, still needs only little amount of oil :)
Erlaubt ist, was gefällt !
Si libet, licet! Aelius Spartianus

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Re: Piston 93.5 Wossner

Beitragvon Pablo » Fr Jan 20, 2023 18:20

thank you for your experience.

Mr Rahier Gaston was a pilot.....

Mr Rayer Christian, a kit maker....

in terms of the longevity of the kit and its sobriety in oil is strongly due to the famous U-flex scraper segment of a special technology .... and unfortunately not found nowadays ...

but the cylinder is not a Rayer, far from it.

maybe a JPX but I have doubts if it is not a reported shirt....


namely mr Rayer is still selling 2 or 3 kits which will have a 94mm Wossner piston...

and shirts...

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Re: Piston 93.5 Wossner

Beitragvon Hiha » Fr Jan 20, 2023 22:23

NOTHING he does is reliable...
Cheers,
Hans

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Re: Piston 93.5 Wossner

Beitragvon Mambu » Fr Jan 20, 2023 23:11

NOTHING he does is reliable...
Cheers,
Hans
I'm only talking about the cylinder itself, whoever casted them ... :wink:
... not the machining... :lach:
I've never heard that one of these cylinders cracked... :roll:
Regards
Mambu

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Re: Piston 93.5 Wossner

Beitragvon Pablo » Mi Feb 15, 2023 10:56

Hi,

I ve compare my proto 94mm by Wossner and your plan and a 89mm Wossner piston (8505)....

Your plan look exactly like the 8505. Expect the diameter of course....

And looking the two piston I easy find who one is lighter than the other....

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Bild

So I ll made a mix....

A 8505 with a less curved dome (compression 9:1) and diameter 93.5....

Thanks for your expérience !


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