Can this driver in a 7tooth run without a chaincase mod on the pro? I currently have the whal bros drivers with the outside edge of involutes cut off. This looks like a MUCH better way to go.I'm just not very keen on the drivers only having one row of involute nubs to drive off of for each driver...and I certainly don't like the teeth driving on the windows most of the time... the outer guide nubs don't work as involute nubs because of their size....
Dub had problems with his drivers "walking" on the shaft when he used standard Avids with the powerclaw and trimmed every other small outer guide-nub....All the power was being trasmitted thru one side of the driver until it slipped enough for the extro-tooth portion of the driver to catch the window.
Robbie has the new drivers out for the Power Claw Track in the Polaris with the tubular/splined drive-shaft.... in both 8 tooth and 7 tooth configuration.
Also, after seeing 3 sleds running the 8 tooth 3" pitch standard (involute only) PPD drivers on this track (from Wahl/Carls/SLP)... and measuring the clearance accurately... which was between 1/4" and 5/16" (not much)...
I Highly recommend doing a D&R on this sled to get the necessary clearance for efficient operation if you are using the 8 tooth drivers. The lower efficiency is less evident in low moisture "fluff" powder than in high moisture content snow.
A HRP 5/8" D&R with the 8 tooth drivers gives about he same clearance as using the 7 tooth drivers without the D&R... but would turn with more efficiency than the 7 tooth setup.
Here are the new style Avid 7 tooth drivers with the Power Claw HCR track...
This type of Avid driver will be "the ticket" to use with ANY 3" pitch track in the Polaris IQ/PRO RMK, IMO....weather you choose the 7 or 8 tooth versions.Since the front drivers dont have to roll over the clips on the track.... but rather they roll just like an involute driver between the 4 involute rows inside of the rails no more plastic rolling on metal clips... NICE!!
Brad Story, from what I hear, is using the 8 tooth versions of this driver that Robbie and I developed.,
