Have you thought about using wheelchair motors? That's what most use.

Wheel chair motors are definitely one of the alternatives, but seem to be pretty pricey for a pair. Also, note my preference for a domestic (to me) source. US sources need to be imported to Canuckland.

Windshield wiper motors are more common, and can be sourced at a local wrecker yard for cheap I would imagine!

Check out this project by @jstarn1

Ryobi 40v Robot Mower With 40v Trimmer Whiskers By Jstarne1/ Starnes

You may get some ideas from his use of cordless drill motors.

Ron

If I can make a suggestion for the driving of the lawn mower.

Forget about cordless drill motors. Only suitable for small (very small) lawns. Cordless drill motors aren't supposed to keep running 1 hours constantly... They get pretty hot...

Wheelchair motors are excellent, however expensive.

I'm testing e-bike and e-ped (e- step) motors. I believe this is the right choice when you compare price/torque/performance/endurance.

It only requires a little bit of skill to adapt the drive with sprocket and chain to the lawnmotor.

In the attachment you'll find a few pictures of motors I purchased on ebay and banggood. I use this with and ESC.

DCMotorsLawnMower.zip

@PhG

Nice find. They look like they will work well.

Ron

Thanks for the input PhG. I had looked at electric bike motors. I would prefer a domestic source, but Bangood seems to have very good pricing. I have ordered from them before with good results.

I will have to change computers to download and view your attachment. My iPad doesn't like the zip file?

Additional post, this time no ZIP file but JPEG's. For the iPad users