Featherweight build

[Ocracoke]

That is a little low but can be compensated for with slightly bigger wheels. The Honey Badger 3 ran both 4S (13.2v nominal) and 6S (19.8v nominal) LiFe batteries at Grantham and both were suitably nippy (4S was more controllable on the floor though ).

The motors I use come up to about 1000rpm with no load on 4S and is definitely on the fast end of what FW's have but 470rpm output on 4 or 5 inch wheels should be perfectly respectable.

[Triceratop]

I agree, 470 rpm on 130mm dia wheels should only give a theoretical speed of 11.3km/hr. I'm guessing I should be aiming for around 15 to 20km/hr. Remembering of course traction has to be gained at the point of acceleration. Shall look for reduction gearbox....

[ACEGUY]

Are any of the propderives from hobbyking worth looking into? What would be a good suitable ESC for it?

[maddox10]

Yes, propdrives can be a good motor for a feather, and we have decent results with a SimonK flashed Turnigy TZ85

[shakesc]

I've had great results out of propdrives 50-60 270KV on 6:1 using 100mm wheels. You could use a smaller propdrive and still have a great robot. I had 2 50-60 in a 4 wheel drive bot -hilarious to drive

TZ85a are great therefore they are discontinued

[Danjr1]

I'm running 28-26 2000kv motors on 4s using 100mm wheels and argos gearboxes. Nice, light and cheap. Speed is pretty good too.

Other Hobbyking ESCs can theoretically be hacked with Simonk firmware. I'm going to have a go on a 100a esc first with SimonK then with the brushed code to see how it turns out.

[ACEGUY]

I've got a compiled list of what I plan on using, if you guys could go through and give me opinions that would be great.

4x DeWut drill motors

2x Ragebridge2

4x 4" Colson wheels

Zippy Compact 5000mAh 6s 60c

[Roboteernat]

I would have thought the Ragebridge were OTT for a feathweight, and a 3.3 amp battery easily handles the 3 minute battles.