36:1 - 24:1 Drill gearbox Conversion

[Liftoff]

Why £120, wouldn't two motors be enough?

[PJ-27]

Plus some people have built their robots around existing drill motor gearboxes, the Gimson's, although with better mounting options, are quite different.

[daveimi]

Yeah never thought about people with 4 or 6 motors! lol

And yeah see what you mean about people with existing setups just after replacing their internals.

[Liftoff]

I don't understand the reasoning behind putting too much motors in the machine...in the end I think its useless having more power than you can transmit to the wheels.

The real issue would be the grip/friction at the wheels and motors powerful enough not to stall. But I stand to be corrected :wink:

[daveimi]

I admit that there have been times I've seen 6wd robot designs and thought I wonder if it would just wheel spin all the time?.

[Revsmin]

Nope
Ricochet drives nicely, fast, powerful and no wheel spin at all, and it has 6 motors.

[PJ-27]

Some robots have awesome drive with just 2 550 motors, it's all about how you put the power down and how you get it to the motors.
Having 4 motors and gearboxes is just an easy and cheap way of getting 4WD since setting up pulleys, belts and passive axles can be an expensive and time consuming process.
As for 6 motors though I can see it just being a hindrance since it'll create additional unwanted friction when turning.