[nearbeer]

Thanks for your time. I am looking to put an electric motor, preferably 120 VAC, that will allow me to drive the wheel(s) of my restoration rotisserie that supports my '65 Mustang Fastback. Car + rotisserie will weigh around 1400-1500 lbs and will roll on (4) pneumatice tires from a riding lawn mower. I envision a motor acutated by a momentary on/off button and will use a go-kart brake to stop/slow the motion of the rotisserie; in turn, the motor will drive a go kart gear/axle combination.

I am new to the electronic side of the house; I am comfortable around a manual lathe & mill/drill and have decent metal fab skills. In your opinion, what size motor should I be looking for? What type of motor (as I am still learning about stepper vs. servo) will fit this application? I have attached two pics of this application for light civil aviation planes.

Thanks for your time,

NearBeer

[Al_The_Man]

What kind of RPM are you looking at/need for the motor?
The Gear/axle ratio and desired output rpm will be a deciding factor.
Are you committed to 120vac?
DC motors such as Golf cart style and a Automotive battery is one option.
For a start, you could place a torque wrench on the input shaft to discover what the break-away torque is required by the motor, this is assuming you already have the unit and drive train in place to experiment on?
Al.

[nearbeer]

Not 100% committed to 120V AC but thought it might be a simple set up. I do not have the motors yet nor the axle+gear. Not sure how to source a golf cart motor on the cheap (<$150) considering S&H. In the R&D stage and want to make my meager $$$ go a long way.

Any other ideas?

/R,

NearBeer

[Al_The_Man]

Well regardless whether AC or DC you still need to come up with a required rpm, this and the torque required will be a deciding factor, so 'what size motor do I need' requires alot more info.
AC motors, unless you go Universal are restricted to just under 3600rpm max for a 2 pole motor, Universals have lousy rpm control, but relatively high torque and high top rpm, hand power tools etc. for example.
Al.

[nearbeer]

Al the Man:

I am thinking about a max of 60 rpm's at the wheels; I would be maneuviring the rotisserie around my driveway and into/out of my attached 2 car garage.

Thanks for the idea to use a torque wrench to get an idea of my breakaway torque. Once I get an idea of the req'd breakaway torque, I'll come back to this issue later.

Thanks for the input.

NearBeer