It is a 2.86 pitch........When switching to a 3.0 pitch track it is important to change your drivers to 3.0 pitch, but visa versa you can get away with running 3.0 pitch drivers and a 2.86 pitch track
Nelson... Whaaaaaattt????????
Since I always like to learn.... how does a 3" pitch driver (bigger tooth and wider spacing between centers) work on a 2.86" pitch track???
This came up last season and according to Robbie at Avid and Bruce at Camoplast...not possible.
========================================================================
A 3" pitch driver has 3" between the base of the tooth at the rim of the driver (not the tip of the tooth)...
3" x 8 teeth = approx 24" circumference of the driver rim....
3" x 7 teeth = approx 21" circumference of the driver rim....
2.86" x 8 teeth = approx 22.8" circumference of the driver rim...
or in other words
Circumference / Pi = Diameter
3" pitch x 8 tooth.... 24/Pi = approx 7.64" diameter ... 3.82" from driveshaft center to inside surface of the track
3" pitch x 7 tooth.... 21/Pi = approx 6.68" diameter ... 3.34" from driveshaft center to inside surface of the track
2.86" pitch x 8 tooth.... 22.8/Pi = approx 7.25" diameter ... 3.625" from driveshaft center to inside surface of the track
A 3" pitch 8 tooth driver will push any given track about .195" closer to the tunnel than a 8 tooth, 2.86" pitch driver. If you add the extra 0.10" of a camo extreme 2.5" track....
mind you in the 3" pitch... you will decrease the tunnel clearance by more than 1/4" over the 2.4" polaris running the 8 tooth 2.86" pitch drivers. This is why the 7 tooth drivers are necessary.
The 3" x 7 tooth driver brings the inside surface of the track .28" closer (over 1/4") closer to the swing arm rub pads.
To answer your question (finally, because I had a brain fart in not reading your question carefully)
For the 2.25" track... on 3" pitch, 8 tooth drivers... an approximation... I'm assuming the Cat Power Claw is a single ply track.... the clearance would DECREASE by the .15" shorter lug PLUS the
added radius of the 3" pitch, 8 tooth driver (.195")...
With this combo... there is about .045"
Less clearance than the stock Dragon single ply 2.4"... wow... less clearance than the stock 2.4... Who da thunk it???
This is where a D&R comes in handy....
I wanted to figure this out anyway for a friend.
My brain hurts now... and I probably made some mistakes!!
Power Claw 2.25"