A123 lawn mower...

[sikeston34m]

Hi ZPB,

I have lots of questions here.

I'm working on a RC Lawnmower.

How many inch cut is yours?

You said you were looking for another motor? Can you push that motor by bumping up the voltage some?

What's the general size and what size shaft? RPM range on 24 volts?

I know you don't wanna spin the blade too fast or it could have a come-a-part.

[zeropointbug]

Thanks guys...

Originally Posted by sikeston34m

Hi ZPB,

I have lots of questions here.

I'm working on a RC Lawnmower.

How many inch cut is yours?

You said you were looking for another motor? Can you push that motor by bumping up the voltage some?

What's the general size and what size shaft? RPM range on 24 volts?

I know you don't wanna spin the blade too fast or it could have a come-a-part.

The cut width IIRC is 18 inches? I could be wrong.

I was thinking the voltage boost from the 8s6p pack would just keep the voltage high enough that it would give it that extra power needed. Although, a 10s5p pack might work good too, because I just went and tried a 10s1p pack and i sounded like it had potential if it had enough capacity and voltage holding

I don't know on the shaft size or the RPM/v, couldn't tell you. I think the motor shaft must have some kind of adapter on it to make it the right size for standard mower blades.

[zeropointbug]

Here's the eagletree... notice the time Not too bad for 2300mah!, actually these cells are 3 years old now and are returning 2250mah, with a conservative guess of 200+ cycles.
Looks like it takes 120 amps at start up (can't see it in graph), or 2400 watts, and last a little less than 1 second.

[zeropointbug]

It doesn't seem to matter how much load you apply to a mower, most of the power is taken in spinning that blade that is pitched to suck the grass up. Cutting no grass takes about 550 - 575 watts, and cutting thick stuff with leaves in it takes 850 watts, so it's probably beneficial to move as fast as you can while still cutting the grass.