OzVMX Forum

Clubroom => Tech Talk => Topic started by: oz555ktm on May 16, 2014, 09:23:34 pm

Title: Help Fork Modification
Post by: oz555ktm on May 16, 2014, 09:23:34 pm

(http://i1063.photobucket.com/albums/t512/oz555ktm/forksyes_zpsbbc383a2.jpg) (http://s1063.photobucket.com/user/oz555ktm/media/forksyes_zpsbbc383a2.jpg.html)

 Just pulled some Marzocchi 40 mm forks apart and thay have a Aloy tube added to the top of the Damping Rod .

 that is  the small tube ( Center ) betwen the damping rod  (right) and the large tube spacer ( left )..

   when all togetter the fork still  has full travel.. and No the small tube has not been hitting  on the retain nut .

  the small tube fits in side the large tube  when fully compressed.

 The Mod  looks like it has been done very well  . I say by a Suspenion shop ..

Do I relpace seals and leave it alone or remove the small tube and go back to stand ...

Title: Re: Help Fork Modification
Post by: Michael Moore on May 17, 2014, 12:48:33 am

I think Patrick & Bowers used to sell tubes like that in the early 1970s for Yamaha forks.  The idea was to keep the oil coming up out of the damper rod away from the springs so it didn't get thrashed quite so much and might also return to the lower part of the slider quicker.

cheers,
Michael

Title: Re: Help Fork Modification
Post by: TT5 Matt on May 17, 2014, 12:50:27 am

lcky we al txt so we knw wat ur abut ;) as to ur forks they just look like jap forks except for the small alloy tube on top of the dampener rod, are the small alloy tubes shown in the parts diagrams?

Title: Re: Help Fork Modification
Post by: oz555ktm on May 18, 2014, 12:39:45 am

Quote from: Michael Moore on May 17, 2014, 12:48:33 am

I think Patrick & Bowers used to sell tubes like that in the early 1970s for Yamaha forks.  The idea was to keep the oil coming up out of the damper rod away from the springs so it didn't get thrashed quite so much and might also return to the lower part of the slider quicker.

cheers,
Michael

Thanks Michael that what i was kind of thinking too...

Title: Re: Help Fork Modification
Post by: oz555ktm on May 18, 2014, 12:40:49 am

Quote from: TT5 Matt on May 17, 2014, 12:50:27 am

lcky we al txt so we knw wat ur abut ;) as to ur forks they just look like jap forks except for the small alloy tube on top of the dampener rod, are the small alloy tubes shown in the parts diagrams?

   NO

  and I have neaver seen this Befor ..

Title: Re: Help Fork Modification
Post by: TT5 Matt on May 18, 2014, 05:21:21 pm

yeah its a different fork mod but hey if it was any good the japs would have been on to it and incorporated it into forks years ago, even the early upside down forks were using normal dampening rods in them