Did you look at my Revo project while you were designing that older-style slipperential setup?
Looks a lot like it, the gearing is even the same (44/20).
Looks great! Let us know how much it weighs when it's complete.
SH Z-Car, Custom Crawler, 8s Savage,
12s XTM XLB 1/7 buggy,
4wd 4-link rear/IFS Pro4 truck,
Custom Hyper 10 Short Course,
Belt-Drive Mammoth ST 1/8 truggy, 4s 17.5 MM Pro HPI Blitz