2010 M8 Black/Orange spring breakage

[RACINSTATION]

If you have a 2010 M8 with the black/orange spring we have seen some of them break at around 650-800 miles. Engineering is recommending switching to the Yellow/White primary spring. We have tried the orange/white, but I think that it engages too high and does not hold the rpm as well.

 

[Dam Dave]

so your saying the yellow/white will hold rpm

 

[RACINSTATION]

This is what Arctic Cat engineering is recommending. Myself, I like the Speedwerx red/white H5 alloy spring. Soft engagement and holds the r's.

 

[Dam Dave]

thanks, do you have that spring in stock, any other ideas for clutching a stock 2010 m8 162

 

[dmkhnr]

Where do you like to run the motor? I'm seeing 8k with 67# at 9k elev. I'd think that the yellow would require scrubbing more weight. 220 miles and it hasn't loosened much.

 

[jonny ringo]

speedwerx

Racin are you talking the Blue/white 120/310 ?

Thanks

 

[weldab]

Mine broke with less then 2 hundred miles.Still climbed fine just made a mean noise on my poor belt at idle!

 

[mmsports]

Black orange VS Orange white

Same spring different manufacture. If you break it cat will warranty it and they have told us that if you do not like the high engagement then to use yellow white but we have been replacing them with the orange white. We must have ordered the last of the orange white. When we ordered 20 of them last time we got 17 O/W and then we got three Orange Black and I am guessing they must have new manufacture making them. We have been using the O/W spring for many years I would guess that we sell over 50 a year and if I am going to run an normally aspirated sled its going to have that spring in it. If you do want an Y/W we have many TI one,s in stock little bit more money but last lots longer.

 

[thumper450]

spring rate

what is the spring rate on black/orange spring?

 

[qbeam]

I had a Cat dealer recommend the SLP blue/Purple spring. Anyone used one of these? He told me that it would engage at about 4200 and should hold the r's while climbing.

 

[mmsports]

Spring rate

They are just changing vendors so all should have same spring rate.I was told with in 2 Lb
B/O
O/W
O/B

143/290

 

[Diamond8]

Same spring different manufacture. If you break it cat will warranty it and they have told us that if you do not like the high engagement then to use yellow white but we have been replacing them with the orange white. We must have ordered the last of the orange white. When we ordered 20 of them last time we got 17 O/W and then we got three Orange Black and I am guessing they must have new manufacture making them. We have been using the O/W spring for many years I would guess that we sell over 50 a year and if I am going to run an normally aspirated sled its going to have that spring in it. If you do want an Y/W we have many TI one,s in stock little bit more money but last lots longer.

What is the cost for the yellow / white TI springs you have in stock?

Dave

 

[shredjim]

. We have been using the O/W spring for many years I would guess that we sell over 50 a year and if I am going to run an normally aspirated sled its going to have that spring in it. If you do want an Y/W we have many TI one,s in stock little bit more money but last lots longer.

Kevin, why do you say the above about being so attached to the Orange/white or 143/285 spring? I have that installed on my sled right now that I got in a clutch kit, and I think it engages too high. I'm gonna put the yellow/white back in to hopefully lower it some. Please let us know why you like the 143/285 so much.

 

[mmsports]

Test em you will see

Do some side by side comparisons. The O/w is faster.



Y/W Ti 75 plus shipping list is like 154.99 cost is over 100

 

[SnoShark]

Do some side by side comparisons. The O/w is faster.



Y/W Ti 75 plus shipping list is like 154.99 cost is over 100

Do you know what the engagement is on the O/W with everything else being stock? Thanks

 

[mmsports]

About 4500 RPMs

And it looks like the Y/W is about 3600

Do you know what the engagement is on the O/W with everything else being stock? Thanks

I have done a few thing to change engagement instead of the changing spring that works good. I make some weights that work nice

 

[hatchers]

This is what Arctic Cat engineering is recommending. Myself, I like the Speedwerx red/white H5 alloy spring. Soft engagement and holds the r's.

****in sweet, this is the info im looking for

 

[RACINSTATION]

Just FYI, this spring is listed in the Speedwerx catalog as White. I have plenty in stock. I don't know why, but it has been this way for 2 years....order white and it comes red with white stripe.

 

[hatchers]

RS - the stock pr sping is a 140-185ish i think.....so it this spring you speak of a 130-310ish?......i know i need more on the top and less on the bottom

And, this is my first cat stock sled,.......so, its seems the helix kinda sticks before it returns to closed.....is this the reason for the shift assist??

and i believe the shift assist idea is just the thin bearing and plastic washer i have under my other cat sleds primary spring, right?

 

[RACINSTATION]

Stock is 143/290

Speedwerx Red/White is 125/340

Softer on bottom harder on top.

The shift assist works really good on all 2005 and newer Cats. I also like to run (3) black preload spacers under the stock spring.