Electric Bikes - How reliable are brushless motors?

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pengyou
10-09-07, 05:53 AM
I have been reading about motors, brushless and brushed. I understand that brushless are much more efficient but I have also read that they a component inside called a hall sensor that is often not very durable. Is this true? Does this apply to all brushless motors or are there some that don't have this?

Abneycat
10-09-07, 12:35 PM
The hall sensors are necessary for brushless motors. Unless there's something wrong with your motor, you're heavily abusing the voltage, or you have a crash, they should work fine.

They can also be replaced
http://visforvoltage.org/forum/control-systems/1693
with a little effort, in case they ever do fail.
chicbicyclist
10-09-07, 06:41 PM
I've had my Wilderness Energy brushless motor for a little bit over a year now and I've been pulling heavy cargo with it on pretty steep hills for about 8 months now.

My motor is fine.

I hope I didn't just jinx it though.

timothy002
10-11-07, 02:25 AM
I haven't heard it before, I just know brushless motors are much more efficient
BroadwayJoe
10-11-07, 09:31 AM
More efficient over a broader range of motion - with the right controller. Ask anybody who's ever had to service 100 year old design motor brushes, I'm sure they prefer BLDC too! Onne of life's dirtiest messes I've ever seen.

I compare it to the evolution from point ignition systems to solid state in automotive engineering. BLDC is the future and components are improving everyday.
atomiczombie
10-15-07, 08:56 AM
The brushless motors are great and can take a severe beating. I have used both, and would always choose brushless due to efficiency and durability.

I have several electric vehicles using brushless hubmotors, and there are a few vids here...

http://www.atomiczombie.com/videos-video.htm

The vehichles with the hubmotor are KyotoCruiser, LongRanger, and SilentSpeedster. I have put the LongRanger through brutal testing, and the hubmotor is still fine. Jumps, water, massive hills, etc.

Cheers!
Brad



I have been reading about motors, brushless and brushed. I understand that brushless are much more efficient but I have also read that they a component inside called a hall sensor that is often not very durable. Is this true? Does this apply to all brushless motors or are there some that don't have this?
karma
10-15-07, 03:36 PM
i want a sparky lol :)
davovinch
10-16-07, 05:02 AM
My experience with HubMotors has led me to the conclusion: stick with the recomended ones, like W.E., Crystalyte, and Go-Hub also ask about the rep of the seller. I have seen many bad posts about BernsonEV on V is for Voltage. I think Danny at Largoscooters is tops.
just my 2cents.
Lock
10-16-07, 06:36 AM
I have been reading about motors, brushless and brushed. I understand that brushless are much more efficient but I have also read that they a component inside called a hall sensor that is often not very durable. Is this true? Does this apply to all brushless motors or are there some that don't have this?
Halls aside... can you say "carbon dust"?
http://endless-sphere.com/forums/viewtopic.php?t=431

tks
Lock
human-electric hybrid