Supertraxmag, Procross Suspension article

ecdlmd02 · 03-16-2012, 09:12 AM

Did anyone read this from Supertrax? Wonder if that is a typo, below in bold, could it be correct? Seems insane as compared to the 20lbs of the F series.

If you found your 2012 ProCross Cat tended to "pack up" about two-thirds of the way through its suspension travel, we may have a fix for you.

We found this tendency ourselves and were a bit frustrated this winter trying to get the skid to use its full travel and take advantage of its shocks' ability to dampen.

It actually felt like it was bottoming out all the time - a tendency we never experienced at all on the early 2012 Cat protos we rode a year ago.

This was especially noticeable on Sno-Pro models where there are no damping adjusters on the skid shocks and the calibration seems to be overly stiff anyway.

Our LXR press sled did the same "packing thing" but because the shocks are set to be more compliant, we could live with it much better. Still not as good as we knew it could be!

According to the Cat engineers, here's the fix: Apparently, the 128-inch track on the Procross tends to be too tight. Since the track doesn't have enough deflection when set at what would be normal adjustment other years, when it gets past the halfway point in its travel, the track goes way tight and resists movement through the rest of its travel.

If you've noticed this stiffness (almost like the sled is bottoming out - call it "soft bottoming"), you need to back off your adjusters so the track is hanging down 1.5 inches with 110 pounds pressure measured halfway down the rail.

Make sure you've set your pull scale from the center of the track, not the outside edge, when measuring deflection.

Apparently, a looser track allows the ProCross skid to deliver everything you paid for.

JMR · 03-16-2012, 09:26 AM

110 lbs? That seems excessive.

WOTF8 · 03-16-2012, 09:30 AM

I would never of thought to run the track that tight. Maybe that is why I never really thought it rode stiff.

Sideshow Bob · 03-16-2012, 09:32 AM

it must be a typo id say 10 lbs. regardless it could explain a few things such as slider wear.

krom · 03-16-2012, 11:07 AM

Typo, should be 10 lbs

f11 turbo · 03-16-2012, 11:17 AM

What does the owners / service manual say?

gwilburn · 03-16-2012, 11:39 AM

I always run mine much looser than the manual. I think it says 1-1.5 under 20 lbs of tension.

I'm running that deflection under NO tension.... but i'm not studded.

My problem was the small chop, not the big stuff

Jester · 03-16-2012, 12:08 PM

I felt this with mine and never could really get tid of it. I was more worried about the tracck ratcheting. I will play with this next year.

Jester

ttraynor · 03-16-2012, 02:33 PM

I'm reading my spec sheet for F800 and track deflection is: 2-2 1/4" @ 20 lbs.

gwilburn · 03-16-2012, 03:19 PM

Quote:

Originally Posted by ttraynor

I'm reading my spec sheet for F800 and track deflection is: 2-2 1/4" @ 20 lbs.

Hmmm. maybe i should make mine 2.25" deflection with 0 lbs. I was told a long time ago to run it as loose as possible w/out ratcheting.

03-16-2012, 09:12 AM	#1 (permalink)
ecdlmd02 Super Advanced Member Join Date: Mar 2008 Posts: 359 Current Sled(s): 14' XF8000 SP Previous Sled(s): F8, ZL800, Wildcat Location: Dedham, ME Favorite Riding Area: The County 12-13 Mileage: Not enough 11-12 Mileage: 900 10-11 Mileage: 700 Age: 37	Supertraxmag, Procross Suspension article Did anyone read this from Supertrax? Wonder if that is a typo, below in bold, could it be correct? Seems insane as compared to the 20lbs of the F series. If you found your 2012 ProCross Cat tended to "pack up" about two-thirds of the way through its suspension travel, we may have a fix for you. We found this tendency ourselves and were a bit frustrated this winter trying to get the skid to use its full travel and take advantage of its shocks' ability to dampen. It actually felt like it was bottoming out all the time - a tendency we never experienced at all on the early 2012 Cat protos we rode a year ago. This was especially noticeable on Sno-Pro models where there are no damping adjusters on the skid shocks and the calibration seems to be overly stiff anyway. Our LXR press sled did the same "packing thing" but because the shocks are set to be more compliant, we could live with it much better. Still not as good as we knew it could be! According to the Cat engineers, here's the fix: Apparently, the 128-inch track on the Procross tends to be too tight. Since the track doesn't have enough deflection when set at what would be normal adjustment other years, when it gets past the halfway point in its travel, the track goes way tight and resists movement through the rest of its travel. If you've noticed this stiffness (almost like the sled is bottoming out - call it "soft bottoming"), you need to back off your adjusters so the track is hanging down 1.5 inches with 110 pounds pressure measured halfway down the rail. Make sure you've set your pull scale from the center of the track, not the outside edge, when measuring deflection. Apparently, a looser track allows the ProCross skid to deliver everything you paid for.

03-16-2012, 12:08 PM	#8 (permalink)
Jester Super Advanced Member Join Date: Dec 2002 Posts: 4,713 Current Sled(s): 12 F1100 SP turbo Orange, 08 f1000 sp Previous Sled(s): 06 cf 700 SP, 05 F7sp Location: Ottawa, Ontario Favorite Riding Area: Norther Ontario/ Quebec 11-12 Mileage: 1800 10-11 Mileage: 2500 Age: 43 Riding Since: 1969	I felt this with mine and never could really get tid of it. I was more worried about the tracck ratcheting. I will play with this next year. Jester __________________ Ready for snow wherever it may be!!!!

03-16-2012, 09:26 AM	#2 (permalink)
JMR Banned Join Date: Oct 2011 Posts: 912	110 lbs? That seems excessive.

03-16-2012, 09:30 AM	#3 (permalink)
WOTF8 Super Advanced Member Join Date: Feb 2007 Posts: 450 Current Sled(s): Procross 800 RR Previous Sled(s): ,12 F800 sno pro, Rush 600, 600RR, F8 sno pro, many doo's 12-13 Mileage: 3000 11-12 Mileage: 1400 10-11 Mileage: 3000	I would never of thought to run the track that tight. Maybe that is why I never really thought it rode stiff.

03-16-2012, 09:32 AM	#4 (permalink)
Sideshow Bob Advanced Member Join Date: Apr 2003 Posts: 45 Current Sled(s): 2012 cat turbo lxr Location: markham Favorite Riding Area: dorset Riding Since: 1993	it must be a typo id say 10 lbs. regardless it could explain a few things such as slider wear.

03-16-2012, 11:17 AM	#6 (permalink)
f11 turbo Advanced Member Join Date: Oct 2011 Posts: 82	What does the owners / service manual say?

03-16-2012, 11:39 AM	#7 (permalink)
gwilburn Super Advanced Member Join Date: Jan 2003 Posts: 1,612 Current Sled(s): 2012 F8 Sno Pro Previous Sled(s): 08 F8, 06 CF6, 03 F7 Location: Grantsville, MD Favorite Riding Area: Ontario & da UP 12-13 Mileage: 2175 11-12 Mileage: 853 10-11 Mileage: 1400 Age: 44 Riding Since: 1972	I always run mine much looser than the manual. I think it says 1-1.5 under 20 lbs of tension. I'm running that deflection under NO tension.... but i'm not studded. My problem was the small chop, not the big stuff

03-16-2012, 02:33 PM	#9 (permalink)
ttraynor Super Advanced Member Join Date: Dec 2007 Posts: 734	I'm reading my spec sheet for F800 and track deflection is: 2-2 1/4" @ 20 lbs.

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