I have a Ryobi Quad cut motor that I want to use to make an Ebike. What kind and size of motor controller do I need?

 

Some kind of 3ph ECM motor controller.
Why not use the controller that comes with the Ryobi?

 

Not to rain on your parade but you may want to do some comparing your drill motor to a real Ebike motor. A drill motor is made to drill holes and then rest and cool down between holes. It's also not near as powerfull as a real Ebike motor. Like I said not trying to smash your project but to get you to think about what your doing. Spending the time and energy to do it with the drill motor then needing to remake the bike, seems like a bad time to me.

 

Not to rain on your parade but you may want to do some comparing your drill motor to a real Ebike motor. A drill motor is made to drill holes and then rest and cool down between holes. It's also not near as powerfull as a real Ebike motor. Like I said not trying to smash your project but to get you to think about what your doing. Spending the time and energy to do it with the drill motor then needing to remake the bike, seems like a bad time to me.

The bad news is that Shortbus is totally correct on this one. A drill motor driving a bike will not deliver very much, and in addition it will be a challenge to mechanically integrate with the bike hardware.
And the part about being intended for intermittent operation applies to some extent as well.

 

Some kind of 3ph ECM motor controller.
Why not use the controller that comes with the Ryobi?

I want to be able to control the speed. It is the motor for the blade.

 

Not to rain on your parade but you may want to do some comparing your drill motor to a real Ebike motor. A drill motor is made to drill holes and then rest and cool down between holes. It's also not near as powerfull as a real Ebike motor. Like I said not trying to smash your project but to get you to think about what your doing. Spending the time and energy to do it with the drill motor then needing to remake the bike, seems like a bad time to me.

I didn't say a drill motor. I said a mower blade motor.

 

OOPS!! The shortbuss and I made an error. If that is a rotary mower blade mower it spins very fast. That means that you will need a fair amount of reduction to drive an E-Bike at a reasonable speed. I was not considering a rotary mower motor. That will be easier to mount. It may even include a gear reduction section. and the original driver was probably a single speed unit. That would be a reason to use a different driver. Those are available but not cheap.

 

I didn't say a drill motor. I said a mower blade motor.

I beg to differ with you. You said, quote,

I have a Ryobi Quad cut motor

When you Google Ryobi quad cut, it shows drills and angle grinders. So I answered appropriately. Better information gets better answers.

 

Misunderstanding and inadequate explanations are frequent in this forum. Brand names are especially uninformative to those of us who do not ever consider some brands, either because they are unavailable or because they are inferior quality, and some product lines are simply not present in some areas.

 

Brand names are especially uninformative to those of us who do not ever consider some brands

I consider Ryobi one of those brands

 

I beg to differ with you. You said, quote,


When you Google Ryobi quad cut, it shows drills and angle grinders. So I answered appropriately. Better information gets better answers.

Must be location dependent - I get a device that looks like a small chainsaw on the end of a long pole - and that would suggest to me an intermittent duty motor. (so I completely agree on "better information. . . " and on the run time of the motor)

 

Must be location dependent - I get a device that looks like a small chainsaw on the end of a long pole - and that would suggest to me an intermittent duty motor.

It may also have to do with past searches.