How do you know if you need an anti stab kit or not

[fishtank]

Just curious, have seen this come up a fair bit. When I was putting my track back on a few weeks ago I noticed that the end of my rails are bloody close (1-1.5") from the track drive assembly. Also the plastic caps on the end of the rails are a bit scratched or cut up a bit. Not sure if that means its sometimes hitting the drive assembly or if its just from snow/mud/dirt getting in there.

What are the requirements for an anti stab kit?

Ive read that its for 3.0 pitch only? Is that correct? I believe I only have 2.52 pitch.

I have a 162 track on stock 159 rails (i believe, thats just a guess really)

The thought of a rail "stabbing" into my track at top speed along a trail is kinda unnerving.

 

[vdo1948]

In the opinion of many, if you have a 3.0 pitch track you need an anti-stab. Cheap insurance against a bad possibility. Otherwise not needed. Easiest way to tell if you have a 2.52 or a 3.0 pitch is to simply measure the track. A 3.0 pitch track will be 3 inches from one lug/drive window/drive nub/etc. to the next. A 2.52 pitch will be 2.53 inches for the same measurement.

 

[Sledbrain2]

If you slid the suspension to take up the difference of the 159 which is hard to believe because the 159 is 2.52 and the 162 is a 3. I assume you went to 3.0 drives with the 162. I did a set back 2.3/8 of inch and the track would kind of wrap around and hit the end caps so I put anti-stab wheels to keep the caps from getting beat up. The 3 pitch can find its way through the window if the stars align and you have an Obama/Al Gore moment. That is why you hear of guys running wheel kits on the front of the rails.

 

[fishtank]

It was like this when I bought it 12 months ago. I had the drive assembly out a few weeks ago to change the bearing over. I counted the teeth on the assembly and from that I thought I had figured out that I had 2.52" pitch.

I guess the only way to know for certain is to check the track. Its a camoplast track, not sure if its challenger or challenger extreme. 16" wide. 2.5" lugs.

Anyway, a quick tape measure of the distances of the lugs should tell me