Couple of notes on Datums, first of all you CAN install double puck Cleavelands by reindexing the torque plate holes. Folks get
mixed up about ground clearance thinking
a bigger tire is always better, however most
manufacturing on penetration skis are very
cautious of having much of the tire sticking
down thru the bottom of the ski as it destroys the skis performance......... From what I have observed looking at Summits they appear to have very limited clearance on 8:50s to enhance their ski mode performance. I have 3.5" at the heel of my Datums. So you can't automatically assume bigger tire is always more clearance. And as far as AOA is concerned
when the tire is up ontop of the Datum skis it will have more than most because of the amount it rises up to get onto it's pedistal.
Combined with 3" gear the Datums make a great combination for sure. For extreme snow conditions; 6" gear will net you 27"
of prop clearance with an 84" Catto, on 6:00x6 tires. And with
A thrustline kit installed, your crankshaft should be right at 70" on those tires. So for
comparison sake: a Cub on standard gear with 31" Bushwheels is normally around 66/67" according to what tail spring and tire your using. The Datum skis are the best "wheel skis option" out there, especially considering the only options start at $25,000 ! You fly em and you'll
buy em.[emoji6] This picture shows correct placement for doublepucks and actual clearance.
https://www.dropbox.com/s/c5eo5tzmin733ds/IMG_20200202_120238457.jpg?dl=0
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