Sensored vs. Sensorless Motors

[mclovin]

I trying to get a handle on the advantages/disadvantages of each approach. Currently my understanding is that:

Sensored: Less likely to loose sync. Possibly better/faster start up.

Sensorless: Simplicity in construction. Fewer wires to manage. Possibly smaller in size.

As far as controllers go.......are sensorless controllers smaller and simpler (cheaper)?

Thanks guys. You rock!

 

[dnmun]

jim is having a horrible time with his new Wilderness Energy Aoetema which is sensorless. i haven't seen it yet, but i don't mind having the halls in there myself.

 

[johnrobholmes]

Purpose built bike controllers are the same price, sensored or sensorless. An RC sensorless controller will typically be smaller, more expensive, and for at least Castle products keep sync better.

 

[mclovin]

Purpose built bike controllers are the same price, sensored or sensorless. An RC sensorless controller will typically be smaller, more expensive, and for at least Castle products keep sync better.

Speaking of which, how is your purpose built bike controller coming along?

 

[johnrobholmes]

Bike controller is a ways out. I don't expect to get running on protos for 6-9 months, since I have other irons in the fire for RC car goods. The controller board is being designed and tweaked. After that is done the power board will need to be laid out.

 

[GGoodrum]

One other defference is that RC-based sensorless controllers are typically limited to 50V, so you can't use them with typical "48V" bike packs (LiFePO4-based, or otherwise...) because the pack voltage right off the charger is too high for standard RC 12s controllers.

-- Gary

 

[moviles2]

can at present one nine continent work well with sensorless controllers smooth and with fast powerfull starts without bad noises?

I thinking of buy one nine continent but it have 27 amp sensorless controller

its bad idea buy one 9c with 27 amp sensorless controller?

 

[snellemin]

MGM-Compro has RC controllers that go up to 63V and 400A, for those who are interested. It also has an option to run with sensored motors.