225# front spring

[f15ejedi]

I'm having doubts that my front track spring is a 225# spring. The guy I bought it from said it had "fat boy springs" on it but I think he meant the rear torsion springs since I've never had a problem with the back sagging. Is there any way to tell if I have the stock 170# spring instead of the 225# spring just by looking at it? Does it have any markings or a different color?

 

[Danbot]

I just went to look for my oem spring with no luck, but if I remember correctly both springs are black with no markings... so no help there. Probably the next way to compare would be the coil diameter. If I can find my calipers, I'll measure my 225lb today for ya. The 170lb should have much smaller wire diameter.

 

[Danbot]

A quick part lookup for the stock 170lb spring gave me this info:

COMP-SPRING,170#X7.5INX.343,BL
7042050-067

That leads me to believe that the specs for the stock spring are:
7.5" uncompressed length
.343" wire diameter

 

[f15ejedi]

A quick part lookup for the stock 170lb spring gave me this info:

COMP-SPRING,170#X7.5INX.343,BL
7042050-067

That leads me to believe that the specs for the stock spring are:
7.5" uncompressed length
.343" wire diameter

Thanks Dan. I came to the same conclusion before I asked in the post. I just thought there might be something noticably different about the two springs. I wasn't sure if the .343 was the diameter or not.

 

[Danbot]

It probably is, but you never know for sure. If you have calipers this will be quick to confirm. I'll still try and get my 225'er measured for you today if I can.

 

[SixtySevenGT]

The sure TEST

Get a standard Drill Press, a decent bathroom scale and a piece of 1/8 plate to support the face of the scale.

Put the Plate between the Spring and the Scale, the spring will usually bow the front of the scale if not supported better, too much presure in one spot.

Set this up in the Drill press, the spring should fit nicely in the Chuck for compression.

Stand a tape measue up next to it.

Most all springs of any type or kind on showmobiles a are rated at 1 inch of compression.

Compress it 1 inch and see what you have.

This will tell you what you have.

 

[sw]

Also the wire diameters are the same, the heavy spring is just wrapped tighter, stock is approx. 3.00 o.d., heavy approx. 2.77 o.d. This hopefully will tell you what you got.

 

[ttreewalkerr]

Get a standard Drill Press, a decent bathroom scale and a piece of 1/8 plate to support the face of the scale.

Put the Plate between the Spring and the Scale, the spring will usually bow the front of the scale if not supported better, too much presure in one spot.

Set this up in the Drill press, the spring should fit nicely in the Chuck for compression.

Stand a tape measue up next to it.

Most all springs of any type or kind on showmobiles a are rated at 1 inch of compression.

Compress it 1 inch and see what you have.

This will tell you what you have.

It's not a 1:1 ratio,, not close. I don't know what ratio it is,, but not 1:1.

Basically if you have the stock spring, you can crank that thing up on the adjustment to last couple threads,,,, at that point,, and it don't matter if your 160lbs. or 210lbs.,, the sled will hit whoops nice.

If you have the #225,, you would be very loose on adjustment to get the same load. (Like 1/8" of compression on the spring adjust if a_s end was lifted so no load on skid.)
If you havethe 225, if you cranked it 1/2 of thread adjustment,, it would ride stiff, hard,, you'd notice.
225 cranked all the way up,, it would be way to hard for whooped trails,, you'd notice.

 

[benamen]

If the shock cover fits snug on the spring you have the original spring, if the cover is loose, you have the 225# spring.

 

[Danbot]

It's not a 1:1 ratio,, not close. I don't know what ratio it is,, but not 1:1.

Basically if you have the stock spring, you can crank that thing up on the adjustment to last couple threads,,,, at that point,, and it don't matter if your 160lbs. or 210lbs.,, the sled will hit whoops nice.

If you have the #225,, you would be very loose on adjustment to get the same load. (Like 1/8" of compression on the spring adjust if a_s end was lifted so no load on skid.)
If you havethe 225, if you cranked it 1/2 of thread adjustment,, it would ride stiff, hard,, you'd notice.
225 cranked all the way up,, it would be way to hard for whooped trails,, you'd notice.

The flaw in this is that eventually you will create coil bind if you have too much pre-load.
This is a common mistake on MX bikes.... 200lb rider buys a bike set up for a 150lb rider and cranks up the shock pre-load and when he hits big bumps or jump landings the coils make contact and create some horrible ride quality, as well as possibility of damage. I don't know where this point of coil bind is on this particular application, but it's the reason your pre-load range is limited.

 

[Danbot]

Any luck figuring out which spring you have yet jedi?

 

[f15ejedi]

Any luck figuring out which spring you have yet jedi?

Im going with the shock cover fitting tight method and it does so I'm pretty sure its the original spring. Time to cough up $40 to get the 225# spring. It has a dive problem that I haven't been able to solve and I'm pretty sure that will help. Thanks guys.

 

[SixtySevenGT]

Spring Ratings at 1 inch of compression

Like I said compress the spring 1 inch on a scale and see what its rating is.

This will work with front shock Springs / Back springs most any of them.

This is correct way to measure spring rating , not how loose the cover is.

 

[f15ejedi]

Like I said compress the spring 1 inch on a scale and see what its rating is.

This will work with front shock Springs / Back springs most any of them.

This is correct way to measure spring rating , not how loose the cover is.[/QUOTE]

Its also a lot more time consuming the night before I'm going riding. Im 90 percent sure its a 170# spring. I'll deal with it later. Ive been riding it this way for 3 years so one more seson won't matter if I don't check it now.

 

[TriumphoverU]

Want to know for sure? Go look at the adjuster nut that you use to add preload to the spring. If you can see a small tab that is welded to the spring that sticks down into one of the notches of the adjuster nut then you have the stock spring. The 225 lb spring doesn't have this extra tab welded to it.

 

[f15ejedi]

Want to know for sure? Go look at the adjuster nut that you use to add preload to the spring. If you can see a small tab that is welded to the spring that sticks down into one of the notches of the adjuster nut then you have the stock spring. The 225 lb spring doesn't have this extra tab welded to it.

Thanks. I'll check it out.

 

[Mech Engr]

225 spring

I assume you get the 225# spring from Polaris? What's the part number and where in the heck is it located in the Polaris parts diagram? I have looked at front torque arm, front track shock, chassis etc. etc. and can't seem to find them at all.

John

 

[mountainhorse]

Carls cycles has them at a fair price... they were used on ProX chassis sleds I believe.

 

[mountainhorse]

2010/ 2009 ASSAULT RMK 146 , 2000 440 XC SP, 2000 XCF EDGE

SPRG,CMP,7.5" X 225LB/",BLK (# 7041822-067) $35.95

 

[f15ejedi]

2010/ 2009 ASSAULT RMK 146 , 2000 440 XC SP, 2000 XCF EDGE

SPRG,CMP,7.5" X 225LB/",BLK (# 7041822-067) $35.95

Thanks Eric. It's on the list for next season!