Finally received all the parts for the regearing.
- Turnigy 5000mAh 30C 6s LiPo
- Novak 10,11 and 12 tooth pinions
- 52t metal mod 1 spur gear for slipperential
- also a selection of heavy diff fluids
Can't say i was too impressed with the weight of the 52t slipper spur. Zero effort made to keep it light. It weighs exactly twice as much as the 46t metal spur. Oh well, at least it fitted in the truck nps, only had to widen the cutout in the diff mount plate a little.
Eventually decided to go with 500K diff fluid over the 300K and i'm glad i did. It can still turn the diff by hand. Requires much more effort than 100K but its far from being locked. First run i did the slipper wasn't tight enough so i couldn't tell what effect the fluid was having.
Temperatures were much better. Problem solved i think. Max motor temp was 44c, ESC was about the same, battery 23c. Ambient was around 18c. Used the 11t pinion which results in Total Reduction Ratio of 15.23 with stock Flux 20t pinion being 15.7. Speed calcs to 41 mph (65.85 km/h) and felt plenty fast enough for bashing.
Was very glad i had the skid plate on for that first run. Had some nice 5 foot or so jumps happening off a small mound of dirt but the landing area was a bit rough with large chunks of very hard dirt. Found a depression in the front of the skid plate after i'd finished the session. Must have landed square on a hard chunk of dirt.
My initial thought was that the MDf might be too soft, until i pulled it off the truck.
Must have been some impact to break that. I used plastic braces so they would flex but i'm still glad it broke instead of passing the force of that through to the rest of the truck.