Recomended Cots gear boxes

[Lil' Lavery]

Based on the pictures you've provided of your design in other thread, I think you could possibly save yourself a fair bit of weight and cost by using only two gearboxes, each with 2 CIMs installed on them. You can then transfer the power to 2 wheels from each gearbox via chain. In fact, you can even use the CIMple boxes provided in the KoP to do this and, with the right sprockets, have the ratios you want.

If you use a 12-tooth, double sprocket (provided in KoP) on the output shaft of the CIMple box and attach a 36-tooth sprocket to each wheel, you'll get a total ratio of 14.01:1.

[548swimmer]

We used p80 duals last year and had no problems, and I would highly recommend them if you want to use 2 CIMs a side!

[samir13k]

Toughboxs have never failed on us, and weve used them for all 3 of my years so far. Grease them properly and they are great! If you want to use 4 gearboxes, then I say go for the Toughbox nanos, we used 3 of them for last years Kiwi drive system and they were also very good. They are like the toughboxes except only allow one cim, and have a one piece body.

[Eigenvector]

We used 4 Toughboxes last year with meccanums and nobody could push us around. They're good boxes, just be sure to grease the living daylights out of them.