Ultra-light Portal Transmission
***THE LIGHTEST TRANSMISSION IN THE WORLD***
Only 29.5g, and can be modified for even more weight savings
Tiny Transmission for portal axles (gearing is not sufficient for non-portal axles).
Forward facing motor with optional left or right side motor placement.
Hardened chromoly gears.
Titanium 5mm output shaft.
Dimensions: 52mm W x 34mm H x 21mm L (not counting output shaft)
Motor bolt holes 25mm on center. Skid plate mounting holes 28mm on center (M3 threaded holes).
Gear ratio 3:1 X pinon/spur combo. 36T spur gear (48 pitch).
Fits pinions from 11T to 18T (48 Pitch)
9T pinion: 12
10T pinion: 10.8
11T pinon: 9.8
12T pinion: 9.0
13T pinion: 8.3
14T pinion: 7.7
15T pinon: 7.2
16T pinion: 6.75
17T pinion: 6.35
18T pinion: 6.0
Chart above shows possible ratios using stock Axial portal and AR44 straight axle gears
****Fabrication required**** This is not a direct fit for any chassis except our Capra based Sporty. Often you can just drill and countersink two mounting holes, other times you can fabricate a simple mounting adapter plate.