Greg,

Is the D5 being sent back the nice yellow and black one you've showed us pictures of? That should be a nice ride.

We've been looking into 60-80 size e-drives lately as a result of a joint MK Super Chipmunk 120 project we're doing which we have drawn plans for suitable for e-power. The typical SPA "60 equivalent" drive is a 1400W unit often run on 5s if possible. Many of those models are built light to 6.5-7.5 lbs.

Some of the larger and later Japanese designs are heavier though and more suitable for the big long stroke OS or YS's, whether 60's or 120's. If the Dash is an 8.5 lb+ 800 square plus model, it certainly makes sense to go with more Watts and 6s. For the Chipmunk we decided to turn 15-16" props which is what the 120's would turn as well. Several of the 120 size 50 mm can motors can weigh in the 400g range but we found a way to reduce the size slightly to a ~48 mm can and 350g while still capable of sustaining 2000W continuous.

We went with Scorpion motors and there are both 450 and 515 kV variations. The latter can develop ~1600W on 13" props and 6s while the former needs 15-16" props to get into that power band. Even a 16x12 should be doable for closer to 1800W but the current draw starts getting pretty high on 6s in the 90A range. The 515 might be a better option if you want Hanno like performance on a 14" prop. I don't think a 13x10 will do it but a 13x12 might. You just have to watch the amps on the 515 as it is not designed for more than 6s which is what we want.

You might want to download Scorpion calc to try out a few different configurations. Whether you use Scorpion motors or some other brand, it is a useful proxy tool. Many manufacturers use the same tool for their motors.

David