X3 162, 8t drivers
Finally got it all together and put a few miles in my '14 Pro. Did the Avid beltcase drop n roll with C3 belt and tensioner. Also SLP stage 3 motor.
1. Ended up with -10% lower gearing, and I am awaiting a -15% lower ratio (gears). It is a big track, and you can surely feel the added drag. Going to a 7t driver is ~ -8%.
2. Riding is different. Going the same places throttle is signifcantly less, all else being equal (really I'm a pure boondocker, not a big hill climber). I would liken it to going from a 4 cylinder car, keeping the revs up and screaming around, to a big block. You just don't need to keep the rpm's zinging. I like this, others may not.
3. Knowing #2 above, I also have realized my daily fuel consumption seems to be down, a bonus in my mind.
4. Added confidence. Instead of hitting things WFO and maybe a bit outta control (in the hope momentum will overcome). I feel I can torque around and if need be, throttle up to get out of trouble.
5. The dropnroll has been taxing as the avid case and C3 drive are not correctly manufactured to work togehter. Modifications to the system have been ongoing and I missed a month of riding waiting for parts. Hopefully subsequent items are compatible. Very dissapointing.
6. With 8t drivers and anti-stab, the rails still need trimming to their shortest possible length (using the stock spacer holes in rails) as the 8t 3p drivers are bigger and rubbed on avid driver teeth. Centre punched would have circumvented that problem.
7. Dropnroll of 1" on drivers, but only did a dropnroll of 3/4" on front and rear skid mounts - worked perfect (almost - item #6 may have not been an issue if I went back a furher 1/4"). Utilized stock outer holes in front mount and avid drop brackets in the rear mount. Track length fit perfect. When changing 163 to 162, 155 to 156, etc. be wary of this as you may need new rails.
Overall happy thus far. I would really like to compare a 7t without dropnroll to my 8t with it. I keep my sleds a couple years so I thought I should "do it right" but after the issues, 7t may have been the better option - cheaper for sure.