fork problems

Nick2468 · 02-16-2005, 03:58 AM

ok for the last 2 rides after the sun goes down my fork (marzocchi dirt jam pro) get retardedly stiff... what would solution to this be, is it just the oil thickening up or what?

allex · 02-16-2005, 04:32 AM

its your fork telling you that it hates you

GRIZZ · 02-16-2005, 04:34 AM

hmm let some air out?

Nick2468 · 02-16-2005, 05:41 AM

ya i tried that last night while riding and all it did was make fork super bottomable and the rebound would take a few seconds for it to fully come back

also when i let the air out last night some yellow foamy stuff came out of the air chamber...this seems to me like it shouldnt be oil or grease or whatever it was coming out of the air chamber

Nick2468 · 02-16-2005, 06:41 AM

im thinking maybe its to heavy weight of an oil and once it get colder it thickens up, does this make sense?

LIPS · 02-16-2005, 06:54 AM

How cold is it there? And what weight oil are you using?

Nick2468 · 02-16-2005, 07:01 AM

my best geuss at temperature would be 5-7 degrees?
i have no clue what weight oil it would be in it the fork recently came back from norco and its whatever they put in it

Jeff M · 02-16-2005, 08:25 AM

The Dirt Jam uses an MCU (elastomar) spring element which is temperature sensitive. When the temperature drops the MCU gets stiffer. This would seem to explain your situation.

I don't know for sure but I suspect that you way be able to upgrade the fork to dirtjumper internals (full coils) by buying the appropriate parts.

As for the oil coming out of the air valve, this is pefectly normal for marzocchis as they don't have seperated air/oil chambers.

02-16-2005, 03:58 AM	#1
Nick2468 Registered User Join Date: Oct 2003 Location: coquitlam Posts: 1,289 Rep Power: 21637	fork problems ok for the last 2 rides after the sun goes down my fork (marzocchi dirt jam pro) get retardedly stiff... what would solution to this be, is it just the oil thickening up or what?

02-16-2005, 05:41 AM	#4
Nick2468 Registered User Join Date: Oct 2003 Location: coquitlam Posts: 1,289 Rep Power: 21637	letting air out ya i tried that last night while riding and all it did was make fork super bottomable and the rebound would take a few seconds for it to fully come back also when i let the air out last night some yellow foamy stuff came out of the air chamber...this seems to me like it shouldnt be oil or grease or whatever it was coming out of the air chamber

02-16-2005, 06:54 AM	#6
LIPS Registered User Join Date: Dec 2004 Location: Portland Oregon Posts: 308 Rep Power: 17	How cold is it there? And what weight oil are you using? __________________ "The Attention Deficit Disorder Association's Book of Wild Animals of Western Eur- Hey! Let's Go Ride Our Bikes!" Check out my pipes at www.thomasjlipspipeworks.wordpress.com

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02-16-2005, 04:32 AM	#2
allex Registered User Join Date: Sep 2004 Posts: 1,740 Rep Power: 0	its your fork telling you that it hates you

02-16-2005, 04:34 AM	#3
GRIZZ Registered User Join Date: Dec 2003 Posts: 2,506 Rep Power: 12	hmm let some air out?

02-16-2005, 06:41 AM	#5
Nick2468 Registered User Join Date: Oct 2003 Location: coquitlam Posts: 1,289 Rep Power: 21637	im thinking maybe its to heavy weight of an oil and once it get colder it thickens up, does this make sense?

02-16-2005, 07:01 AM	#7
Nick2468 Registered User Join Date: Oct 2003 Location: coquitlam Posts: 1,289 Rep Power: 21637	my best geuss at temperature would be 5-7 degrees? i have no clue what weight oil it would be in it the fork recently came back from norco and its whatever they put in it

02-16-2005, 08:25 AM	#8
Jeff M Biker Fox Join Date: Jan 2003 Posts: 2,119 Rep Power: 112868	The Dirt Jam uses an MCU (elastomar) spring element which is temperature sensitive. When the temperature drops the MCU gets stiffer. This would seem to explain your situation. I don't know for sure but I suspect that you way be able to upgrade the fork to dirtjumper internals (full coils) by buying the appropriate parts. As for the oil coming out of the air valve, this is pefectly normal for marzocchis as they don't have seperated air/oil chambers.