Leaf / leafmotor / leafbike high efficiency 1500w motor

Electric Motors and Controllers
boytitan   100 W

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

Post by boytitan » Jan 21 2019 6:49pm

I think this is a mxu 1500watt ripoff design. While a inferior motor than leaf not paying the fuckign shipping charge for mxus or leaf.

https://www.aliexpress.com/item/PASION- ... st=ae803_3

Gonna either build this to a mtx 31 or 39 rim. Probably gonna also buy a trueing stand and start building my own wheels. its 60 bucks at the bike shop to build a wheel. Mtx 31 should do fine, my bikes ryhnolite is only damaged witha few small cracks due to spoke failure and lack of maintenance. I ran without 2 spokes for a few days because I couldn't get sapim strong single butted spokes anyhwere locally.

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neptronix   100 GW

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

Post by neptronix » Jan 22 2019 1:08pm

I'm back to trying to convince leafbike to produce a 0.27mm or 0.2mm lamination version of this motor..
Offered $500 for a single motor to cover any R&D costs they may incur.

Fingers crossed.
My first major build: 8T MAC motor on a Trek 4500.
The new all-arounder: Leafmotor 1500w on a Turner O2 full suspension.

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Cowardlyduck   10 MW

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

Post by Cowardlyduck » Jan 22 2019 6:25pm

neptronix wrote:
Jan 22 2019 1:08pm
I'm back to trying to convince leafbike to produce a 0.27mm or 0.2mm lamination version of this motor..
Offered $500 for a single motor to cover any R&D costs they may incur.

Fingers crossed.
Ask them to make a 45mm wide version too while your at it. That would really rival the MXUS 3K. :)

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madin88   100 MW

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

Post by madin88 » Feb 02 2019 8:18am

neptronix wrote:
Jan 22 2019 1:08pm
I'm back to trying to convince leafbike to produce a 0.27mm or 0.2mm lamination version of this motor..
Offered $500 for a single motor to cover any R&D costs they may incur.

Fingers crossed.
Great that you stay in touch with them :thumb:

What i noticed is that manufacturers, when they make use of thinner laminations, they were always increasing the iron mass (the ID of the stator decreased).
I guess they do this beacuse working with such thin steel sheets can be a pita (to not bend and break them) so they just add otherwise useless steel to make them stiffer.
I think i do not need to mention that this would make the motor heavier. It was the case when they changed the lams on cromotor from 0,5 to 0,35mm and it also was the case on MXUS 3K (both V2 or V3 versions are noticeable heavier).

Thats why i like the LEAF motor so much because they did not increase the amount of iron on the 0,35mm versions and i would prefer it always over an "EDGE" motor for this reason.
It would be great if they could keep the same design if they follow your advice.

Another advice to them would be to use curved magnets, and the option for a 56Pole true torque version (for larger wheels).

cwah   10 GW

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

Post by cwah » Feb 02 2019 11:15am

Is leadfbike a manufacturer? I thought only sellee
R
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The Toecutter   1 kW

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

Post by The Toecutter » Feb 15 2019 5:52am

Has anyone successfully used an 8 or 9 speed freewheel with the 1500W Leafbike motor or is 7 speeds the most that can clear the dropouts with this motor installed?

The reason I ask is due to the following variables:

-No one makes quality 7 speed freewheels with an 11T small cog anymore. DNP makes a low quality 7 speed freewheel with an 11T cog, but I just twisted the first/largest three gears of my DNP Epoch 32-11T freewheel yesterday from my currently motorless setup using large amounts of leg power going up a hill, at about 6,000 miles of use
-I've visited many of the websites that used to sell the DNP Epoch in the 7 speed freewheel configurations with an 11T small cog, and these sites are now listing it as discontinued or out of stock, and it is no longer listed in catalogues
-The rear frame/seatpost mounting bolt on my KMX trike poses a clearance issue with the chain on any top gear cog larger than 11T. 13T or 14T will not work. I am currently using a freewheel with a 13T small cog as a temporary replacement for the DNP Epoch 32-11T that bent yesterday and had to lock 7th gear out to keep the chain from getting caught on the seatpost bolt
-I don't want to use a single speed in the rear. I want this bike to be able to have a wide speed range when operated purely under human power, even after I install a Leafbike motor
-I do not trust cassettes in this application from a reliability standpoint.
-I don't want to pay hundreds of dollars on ebay for an ancient but quality Shimano 7-speed freewheel with an 11T small ring, because they're near impossible to find now

If I can't find a decent solution, then I may just have to settle for less peak power for my build and go with a MAC geared hub, which can fit up to at least a 9 speed freewheel.

I was planning to start off with 4 kW peak on a Leafbike motor, and later modify it for more power... but having usable human power for the vehicle's entire speed range with the motor on is important to my design, as well as being able to operate the bike without electric assist in the event the battery gets drained or any other number of scenarios.



This all said, if I ever get the cash to upgrade to a rear suspension(assuming the currently tested prototypes from adam333 show themselves as viable for human power application), this becomes less of an issue because the clearance problem with the seat post bolt and the chain goes away.

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goosenoose   10 mW

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

Post by goosenoose » Feb 24 2019 5:33pm

neptronix wrote:
Jul 01 2018 12:27pm
goosenoose wrote:
Jun 03 2018 3:30pm
just bought the 20" leafbike rear 1500w conversion kit in 4t and a 50v 20ah em3ev rectangular battery (pf cells) for install on a 8 speed full-suspension downtube folding bike
Yikes, i had one of those bikes for a moment and couldn't stand how rickety it felt even at pedal speeds. I still have a brand new eZee 20" motor wheel and aimed to do a 30mph build on it, but i abandoned that frame and am still looking for something that can take 20" wheels
(really late reply... i know.. )

the downtube folder worked pretty well for the last 7 months commuting. also had a bit of paranoia that the folding mechanism and perhaps steering stem might fail at speed, but the suspension really helped soften any sudden jolts from the road/etc.

that said, i did move to a bike friday hauladay platform. can't recommend the customer service (like, at all... it was like talking to a car dealer) but the bicycle is working out well.

properly spaced dropouts (spaced them myself/<3 steel), disc brakes, fenders, hauling capability/capacity, low center of gravity racks, nifty swept back handlebar, and compatibility with the 20" kit I already had. lose out on folding capability (which has helped a handful of times honestly).. but 3 of those times was because of some sort of issue with controller/connections because of road gunk.

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goosenoose   10 mW

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

Post by goosenoose » Feb 26 2019 2:46am

Question on this actually... Started to notice motor isn't hitting my 30 mph ceiling as easy as before. Is this the battery/ controller/ motor going bad?

I have the stock conversion kit from leaf

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Chalo   100 GW

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

Post by Chalo » Feb 26 2019 11:58am

goosenoose wrote:
Feb 26 2019 2:46am
Question on this actually... Started to notice motor isn't hitting my 30 mph ceiling as easy as before. Is this the battery/ controller/ motor going bad?
If you have been using your battery at or near its maximum capacity, or you've had your battery for a while, it has probably deteriorated a bit. Motors and controllers don't really fall off in their power output-- they either work normally or they have a significant problem.
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smokeywho   10 µW

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

Post by smokeywho » Mar 12 2019 9:57pm

The Toecutter wrote:
Feb 15 2019 5:52am
Has anyone successfully used an 8 or 9 speed freewheel with the 1500W Leafbike motor or is 7 speeds the most that can clear the dropouts with this motor installed?
I was just able to fit the Leaf 1500W motor and a 9 speed freewheel in the back of my HP Velotechnik Scorpion FS26. I had to spread the frame by hand to fit it in and used a number of spacers. I'm a little nervous about how much I had to spread the frame but it was only by hand. Fingers crossed. I switched from a MXUS 3005 motor with a 9 speed cassette. A big step back on the drivetrain but a big step forward for the motor. The freewheel is noisy and the highest ring is only 32T rather than the 40T I had earlier. Leaf makes the 1500W with a cassette option but another user strongly recommended against it due to a thinner axle. Not sure if I made the right decision but if you do get one, you can probably fit a 9 speed freewheel. If I had to do it again, I might have gone with the cassette version and take my chances on the axle.

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The Toecutter   1 kW

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

Post by The Toecutter » Mar 14 2019 9:39pm

smokeywho wrote:
Mar 12 2019 9:57pm
I was just able to fit the Leaf 1500W motor and a 9 speed freewheel in the back of my HP Velotechnik Scorpion FS26. I had to spread the frame by hand to fit it in and used a number of spacers. I'm a little nervous about how much I had to spread the frame but it was only by hand. Fingers crossed. I switched from a MXUS 3005 motor with a 9 speed cassette. A big step back on the drivetrain but a big step forward for the motor. The freewheel is noisy and the highest ring is only 32T rather than the 40T I had earlier. Leaf makes the 1500W with a cassette option but another user strongly recommended against it due to a thinner axle. Not sure if I made the right decision but if you do get one, you can probably fit a 9 speed freewheel. If I had to do it again, I might have gone with the cassette version and take my chances on the axle.
Thanks. Looks like a 9 speed freewheel may be my best option, if I can get it to fit in my drop outs. Bending a KMX frame by hand probably wouldn't be an easy task, if it's even viable. If not, then 2nd choice would be an 8-speed cassette, but then that would require a whole new motor made to fit the 8 speed cassette.

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