Leaf / leafmotor / leafbike high efficiency 1500w motor

Electric Motors and Controllers
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madin88
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Re: Leaf / leafmotor / leafbike high efficiency 1500w motor

Post by madin88 » Sep 20, 2017 11:34 am

there are three different types of controllers:

- trapezoidal
- sinewave
- sinewave with FOC

FOC is the most efficient at low RPM (high torque) and also at high RPM.

AlanB has attached a pdf here if you like to read more: https://endless-sphere.com/forums/viewt ... 6#p1319953

markz
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Re: Leaf / leafmotor / leafbike high efficiency 1500w motor

Post by markz » Sep 26, 2017 4:02 am

The post about the Sinewave Silence Silent being More Torque
Been kicking around my brain

Justin_le has got a post about that
https://endless-sphere.com/forums/viewt ... e#p1197760

Ecky
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Re: Leaf / leafmotor / leafbike high efficiency 1500w motor

Post by Ecky » Dec 06, 2017 12:04 pm

If I wanted to achieve ~45mph @ 72v nominal with a 20 inch rim, that would be approximately 730RPM loaded, right? What would that be, 4T?

EDIT: This is a big thread to read, but what do I need to do to make sure I get a version which can take a freewheel cassette?

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Re: Leaf / leafmotor / leafbike high efficiency 1500w motor

Post by amberwolf » Dec 06, 2017 2:04 pm

Do you want a freewheel, or a cassette? They're two different things.

Freewheel ahs threads, cassette has splines.

Ask the vendor for a good picture of that side of the motor before you order, since they won't likely have a clue which is which.

Ecky
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Re: Leaf / leafmotor / leafbike high efficiency 1500w motor

Post by Ecky » Dec 06, 2017 2:08 pm

My apologies, I saw a post ealier in the thread which mentioned they had a "freewheeling cassette", and thought to ask about it. It appeared they were shipping retrofits for putting cassettes onto older cassette-less motors?

Cassette is definitely preferable. I'll make sure to clarify. Seems to me they would benefit from having some "options" on their ordering page, rather than making every motor a one-off.

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cycborg
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Re: Leaf / leafmotor / leafbike high efficiency 1500w motor

Post by cycborg » Dec 06, 2017 2:29 pm

Ecky wrote:
Dec 06, 2017 2:08 pm
My apologies, I saw a post ealier in the thread which mentioned they had a "freewheeling cassette", and thought to ask about it. It appeared they were shipping retrofits for putting cassettes onto older cassette-less motors?

Cassette is definitely preferable. I'll make sure to clarify. Seems to me they would benefit from having some "options" on their ordering page, rather than making every motor a one-off.
Splined version for cassette

Threaded version for freewheel

Ecky
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Re: Leaf / leafmotor / leafbike high efficiency 1500w motor

Post by Ecky » Dec 06, 2017 2:31 pm

It appears to not be specified when ordering an already-built wheel, so I guess I'll reach out via email.

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