Sand slinging/Beach runs

[jhautz]

whith the quark 125+heatsink I run my 9xl in my emaxx at 66/22 (3.0 gear ratio) with standard maxx diff ratio and 5.8inch tires in heavy grass fields with no heat problems. I use 66/26 (2.54 gear ratio) on pavement with 5.25" tires.

You should be able to run 18/51(2.84 gear ratio) on the beach without issue. Depending on your tire size and diff ratios. The 51/16 (3.18 ratio) is conservative IMO.

9xl is the right motor for 5s. 8xl on 5s will run hot just from the high rpm.