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Posted

Ok I've searched but only had partial sucess, soooo who can tell me the stock spring rates on the 2001 mandello marz front end and sach rear end. I did find one reference to the fork springs being .6 kg/mm

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Yeah : .6 seems right. I think I pumped mine up to .9 or 1.0 (I can't remember) with a nice improvement. Now that I've put on another stone-and-a-half, I ought to trade up springs again or give up the Stout.

Posted

FWIW I have guestimated the front Marz springs to be between .6 and .7.

0.6 could certainly be right, but I'd guess .65

The Sachs is very likely between 350 and 450#/inch. I'd guess about 425.

Posted
  docc said:
... I think I pumped mine up to .9 or 1.0 (I can't remember) with a nice improvement. ....

 

You've the guts to share how you've done that?

 

Hubert

Posted
  gavo said:
Ok I've searched but only had partial sucess, soooo who can tell me the stock spring rates on the 2001 mandello marz front end and sach rear end. I did find one reference to the fork springs being .6 kg/mm

 

The factory springs in my 2002 Marzocchi were a little over .8 kg/mm according to the measurements I took when I had my forks apart. That agreed with what Traxxion Dynamics said they measured on their donor bike. Apparently the earlier 'zokes had softer springs. I'm happy with the set of 1.05kg/mm springs that I bought from TD.

 

FWIW here's my fork spring thread from a while back:

http://www.v11lemans.com/forums/index.php?...xxion&st=15

Posted
  luhbo said:
You've the guts to share how you've done that?

 

Hubert

 

Hmm, that might be a bit of that nifty Deutsch humor :huh: , but otherwse, there is this thread on the forks: Fork Woes B)

Posted
  antonio carroccio said:
Ratch or Pete

Is this a new poll? :huh:

Posted
  docc said:
Hmm, that might be a bit of that nifty Deutsch humor :huh: ....

 

No, no. Just not the most correct sentence ever. It was meant as a question only, more or less. I was interested what sort of "nice improvement" pu(i)mped your springs from 0.6 up to 1.0 .

 

Hubert

Guest ratchethack
Posted

OEM Spring rates

 

2000 short frame “Extremely Twitchy” :not: Sport ;)

 

OEM Sachs shock spring

 

Wire Diameter, .436"

Coil Diameter (center to center), 2.712"

Number of Free Coils, 5

[calc] 532 pounds per inch (93 N/mm).

OEM Marzocchi 040 fork springs

Wire Diameter, .176"

Coil Diameter (center to center), 1.193"

Number of Free Coils, 22.6

[calc] 36 pounds per inch (.64 kg/mm).

SPRING RATE CALCULATOR SOURCE: http://guzzitech.com/springrate.html

Posted
  ratchethack said:
OEM Sachs shock spring

 

[calc] 532 pounds per inch (60 Nm).[/indent]

Something is wrong with those measurements or calculations.

FWIW 532 # per inch is about 90 N/mm or I guess a 0.9Nm, but I thought Nm is for torque, so not sure if it converts.

When I went from the OEM spring to a 475 # spring, my laden sag decreased, not as much as I had hoped, but it did decrease, so I am surprised that you measured 532#

Perhaps you did not remove the thickness of the paint on the spring from the measurement???

Posted
  dlaing said:
...

Perhaps you did not remove the thickness of the paint on the spring from the measurement???

 

You guys are funny. These things are estimators anyway, not calculators.

 

Happy X-Mas

 

Hubert

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