Independent Test - Bergstrom Skegs, Inc.

Independent Bare Pavement Tests of Trail Grabbers
(Mn. Hwy Safety & Research Center)

1998 Polaris XLT 600

120 unglued Trail Grabbers installed in a track that previously had studs installed. (Notice the large holes remaining from the previously installed studs).
This track did 60 full throttle burnouts on pavement.
95 Trail Grabbers stayed in.
25 Trail Grabbers were lost.

The large holes remaining in the track were left by previous studs

No lugs were torn, much less torn off.
Abrasion on the lugs was the only damage to the track.
This same track was used in testing push-thru studs also.
The Trail Grabber tests were all done on one track.
New tracks were needed to finish the push-thru tests because the track could no longer hold the push-thru's in.

These results do not prove that Trail Grabbers are indestructible. The results DO prove that it will take severe misuse to make Trail Grabbers fail.

	The hole left by the push through stud that had pulled out. Notice the frayed cords?
	Since no rubber was removed during installation, only this blemish remained after the Trail Grabber was removed. This means that a new Trail Grabber can be installed into the same hole - if it bottoms out firmly. If not, move over 1/4 inch to either side. $20.00 is the total cost of rebuilding the traction with Trail Grabbers.
	Examine the wear of the track lug and you will see that it is minimal... and the overall height above the track lug is basically maintained.
After 30 passes - measurement of damage done to pavement by Trail Grabbers = 9.5/64" (1/8"+)

	Push-thru Stud Stainless Steel Carbide 72 Studs Installed 100 Passes	Weight before test Weight after test Weight loss Original length Used length Length loss	.0134 .0122 .0012 1.407 1.115 0.292
After 50 passes - measurement of damage done to pavement by stainless steel carbide studs = 24/64" (3/8")

	Push-thru Stud Steel Carbide 144 Studs Installed 200 Passes	Weight before test Weight after test Weight loss Original length Used length Length loss	.0180 .0174 .0006 1.297 1.167 0.130
After 100 passes - measurement of damage done to pavement by steel carbide studs = 32/64" (1/2")

	Push-thru Stud Steel 20 Passes	Weight before test Weight after test Weight loss Original length Used length Length loss	.0092 .0090 .0002 1.214 .943 0.271
After 10 passes - measurement of damage done to pavement by steel studs = 8/64" (1/8")
The above photos prove that Trail Grabbers do less damage than push-thru studs per pass. Translate these results to a snowmobile trail and you'll see that TRAIL GRABBERS are, by far, the least destructive... while maintaining safety on ice.