Leaf / leafmotor / leafbike high efficiency 1500w motor

Electric Motors and Controllers
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The Toecutter   10 kW

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

Post by The Toecutter » Oct 16 2019 4:39am

Does this same 235mm spoke length apply to the 1000W Leafbike motor?

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ZeroEm   100 W

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

Post by ZeroEm » Oct 16 2019 8:01am

1000 watt leafmotor
leafmotor1000.jpg
leafmotor1000.jpg (144.43 KiB) Viewed 593 times
This is from leafbike.com
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Balmorhea   100 W

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

Post by Balmorhea » Oct 18 2019 11:51am

The Toecutter wrote:
Oct 16 2019 4:39am
Does this same 235mm spoke length apply to the 1000W Leafbike motor?
We're discussing the spoke hole pattern diameter. With that dimension, width across flanges, and the effective rim diameter (ERD), you can calculate spoke length.

I measured 232mm pattern diameter with a straight edge ruler, but I wasn't confident in my measurement. So I measured with a caliper from the flange edge to the proximate hole edge. There was close to 0.5mm variation in this distance among all the holes.

Using the median edge-to-hole dimension I got, and assuming 243mm overall diameter, I calculated 231.5mm hole pattern diameter for the single 1500W front hub specimen I have in my possession.

I think it's safe to assume that the pattern diameter would be nominally the same for the 1000W hub, because the flange outside diameter is nominally the same.

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ZeroEm   100 W

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

Post by ZeroEm » Oct 18 2019 12:41pm

Remember all spokes on the outside for width.
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Balmorhea   100 W

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

Post by Balmorhea » Oct 18 2019 11:20pm

ZeroEm wrote:
Oct 18 2019 12:41pm
Remember all spokes on the outside for width.
For full-sized wheels, yes. When in the past I have laced a large diameter hub to a 20" rim, I find that I have to lace all the spokes inside the flange (and radially) to moderate the bracing angle and keep the spokes from being kinked at the rim. That's when the spokes are only 60-something mm long.

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ZeroEm   100 W

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

Post by ZeroEm » Oct 19 2019 10:36am

by Balmorhea » Oct 18 2019 11:20pm
ZeroEm wrote: ↑
Oct 18 2019 12:41pm
Remember all spokes on the outside for width.
For full-sized wheels, yes. When in the past I have laced a large diameter hub to a 20" rim, I find that I have to lace all the spokes inside the flange (and radially) to moderate the bracing angle and keep the spokes from being kinked at the rim. That's when the spokes are only 60-something mm long.
Yes, that's a problem, thought about taking a drill bit and put a little angle in hole to help but would need spokes in the right hole.
Like grinn tech 3D procedure if they still do it.
Then there is the paired spokes.
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Re: Leaf / leafmotor / leafbike high efficiency 1500w motor

Post by Balmorhea » Oct 27 2019 6:40pm

Has anyone got a wiring diagram for the 1500W KT controller that Leaf sells with these motors? I got one with the LCD3 display, and though it's connected and mostly working (even walk assist), it won't respond at all to throttle input. My project is stalled until I can get this issue sorted out.

I assume the 3 pin JST plug with red/green/black wires is the throttle, because none of the other plugs seem right for the job. With the controller powered up, I'm getting 4.5V red-to-black, 5.0V green-to-black, and 0.5V green-to-red.

https://www.leafbike.com/products/brush ... -1091.html
Image

The controller model number is KT48ZWSRLD-ZRL04. I can't find anything online for this model or anything close to it.

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

Post by amberwolf » Oct 28 2019 12:30am

Are you willing to open the controller up? If so, you can directly see which signal wire is soldered to the SP (I think) pad on the board inside. That would be the throttle signal. It's probably the connector you're using already, but this would verify it.

But...these controllers, in some firmware versions, can have modes where throttle is disabled. I don't know how to change those modes, but it's likely that one of the other regular KT users here on ES does. Best shot for that is the open-source firmware thread by Casainho / Stancecoke et al., because a number of them hang out there. Sorry I can't remember their names at the moment; I think one of them was one of the "doc" members.

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

Post by wturber » Oct 31 2019 12:16am

Balmorhea wrote:
Oct 27 2019 6:40pm
I assume the 3 pin JST plug with red/green/black wires is the throttle, because none of the other plugs seem right for the job. With the controller powered up, I'm getting 4.5V red-to-black, 5.0V green-to-black, and 0.5V green-to-red.
My KT controller's three wire throttle colors are red, black and white. The PAS three wire connector is red, green and yellow.
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