New mower project .... need engine

[damien]

Hi everybody, i m Damien,40 years old and starting a new mower project very simular at the ardumower but without perimetry wire.
My project must be low cost as possible.
I have already baught arduino, some detection stuff and moter driver at fasttech.com (copy arduino very cheap and working fine)

Now i'm looking for the engine with high torque and i found one at dx.com
http://www.dx.com/p/gm58gw-precisio...-torque-gear-motor-silver-373833#.VNvaintKHMJ
what do you think about this motor?
This motor does not have encoder ...is it a problem (for straight line)??

do you have some good reference for driver motor?

Thanks in advance
Damien

 

[damien]

Anybody?

 

[werner]

This motor is too weak, the motor at ardumower shop has 5 times the nominal torque. My experience showed that a 1Nm gearbox broke after one year, currently the motor with 2.5Nm gearbox is still running.