Search found 730 matches: *leafbike.com*

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by ZeroEm
Mar 22 2020 5:54am
Forum: Motor Technology
Topic: Leaf / leafmotor / leafbike high efficiency 1500w motor
Replies: 1558
Views: 217813

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

by transposon » Mar 21 2020 11:35pm

Thanks for the input everyone. I think I am going to get the 1500W version in order to be able to pull some cargo. In order to get up and running, I think I am going to get one of the kits. I am confused on the top speeds listed for the kits. I assume they are are dependent on the winding, but of 2 kits with presumably the same motor, I am seeing different speeds listed.

https://www.leafbike.com/products/diy-b ... t-987.html
This one has speeds of 45.2, 35, 25, 15 mph.

https://www.leafbike.com/products/diy-b ... -1181.html
This one lists 42, 37.5, 30, 25, 20, 15 mph.

I am confused how presumably the same motor has different speeds depending on the kit purchased. Also, any recommendations for a setup that is good for an average of 20-22mph with the capability of ~30mph thrill rides once in a while? I plan on building a 14S battery.

Thanks.
Don't trust the web pages 100%.
Go to https://www.ebikes.ca/tools/simulator.h ... heel=27.5i
figure out what battery can do what you want then get a little more if possible.

Leafbike will change the winding of the leafmotor (blackmagic) to alter the speed of the motor.
Add in the wheel size you plan on running.

Play with the MOTOR SIMULATOR it will be close if not on the money so trust it.

I decided to get the 7T and it does what I wanted. Now I want a 6T.
I use a 72V 25AH battery with a 80 amp bms but have it limited to continuous amps, 36 amps. here a link to my setup.

https://www.ebikes.ca/tools/simulator.h ... &grade=0.5

If you compare the two links the speeds are close to the same. But they get there differently.
by Bullfrog
Mar 20 2020 9:38pm
Forum: E-Bike Reviews & Testing
Topic: My experience with "leafbike" electric bike kit
Replies: 32
Views: 17319

Re: My experience with "leafbike" electric bike kit

Front was a 27.5x2.8" Maxxis DHF I belive and the rear was a 20x4.00" Vee Mission Command.

I would not recommend it...steering was pretty slow and ground clearance was not that great.

It did help keep the MAC cooler :lol: .
by markz
Mar 20 2020 8:56pm
Forum: E-Bike Reviews & Testing
Topic: My experience with "leafbike" electric bike kit
Replies: 32
Views: 17319

Re: My experience with "leafbike" electric bike kit

I dig that bike!
Whats the front tire dimensions?

Bullfrog wrote:
Feb 14 2020 6:26am
Nothing wrong with a small wheel :lol: . Pic below is a bike I built with a 20" rear wheel and a 4" wide tire (Vee Mission Command 20x4"). With any given hub motor, the only way to change the gearing once you bought the motor is to change the tire diameter. My friend called it the "Clown Bike" because it looked like it should be in the circus with 6 or 7 clowns climbing on it.

Clown Bike 2.jpg
by Bullfrog
Mar 15 2020 1:14pm
Forum: E-Bike Reviews & Testing
Topic: My experience with "leafbike" electric bike kit
Replies: 32
Views: 17319

Re: My experience with "leafbike" electric bike kit

Wow, you have a lot of decisions to make :lol: .

My thoughts...go with a 14s/52v battery. You'll have more capacity and power available...even if you don't use it.

Motor...lots of options. I like the MAC/GMAC. Use the Grin Tech Motor Simulator or the Trip Simulator (a little more complicated but gives you a lot more information). Start with the "Motor Simulator" to narrow down your choices and then fine tune the choices with the Trip Simulator. Put in a couple degrees of incline and see what the motor temps do...make sure your selection doesn't over heat with it loaded the way you plan to use it.

Most of the time a 750w motor is exact same motor as the 1,000w version...the only difference is the controller you connect to the motor. Better to have a 1,000w capability and not need it than 750w and not have enough. But it all depends on your requirements.

You'll need to match the capability of your battery/BMS, controller, and your motor to ensure you don't damage anything. The Grin Tech "Ready to Roll Kits" do that for you so they might be a good option. A lot of people don't do this and end up with problems or have to buy additional equipment in the long run...better to get it correct the first time around :D .

The leaf motor is a good option...if it can do what you want it to do.
by zorbas
Mar 15 2020 10:45am
Forum: E-Bike Reviews & Testing
Topic: My experience with "leafbike" electric bike kit
Replies: 32
Views: 17319

Re: My experience with "leafbike" electric bike kit

Hello, I have found a few threads about wheel size and leaf motors and they were incredibly usefull to get started.
I am planning to add a rear hub 100W 48V or 36 V 750 W to my trike. It's an ICE Trice QNT from 2008 with 3x20" wheels (tadpole). The back end is suspended and I might add front suspensions.

Where I live (Bruxelles), everything is small (a lot of stop and go). The max distance I have to make is 10km one way, and there are a variety of short steep hills, longer small grade climbs but also long flats. The speed in town is max 30/35 km/h on the flats, but most of the time 25/30km/h (that's with my "normal" speed bike). I am not sure yet but I might like this engine so much that I could do countryside trips with it as well of approx 80/90 km where I might want to go a bit faster (35-40 km/h) and some hills but never longer than 4 or 5 km and max 10% grade at the steepest.
I am planning to buy the rest of the kit at ebikes, like a phaserunner controller. Maybe EmBev for the battery.

I am also trying to keep my current 9 speed cassette and related rear drive train (I have a 3 speed front gear). What is the best engine for my purpose?
The 750 or the 1000W? Also I am a bit lost with the battery. I thought a 48v approx 12AH or higher.
I need a 135 mm wide axle for my back end fork and I am not sure that the new leafbike engines will allow 9 speed cassettes. They have now a new splint hub apparently but I am not sure what it will allow.

I also sent leafbike a mail to have rear cassette compatibillity information but I would much appreciate your advise and experience :-)
by markz
Mar 10 2020 11:44pm
Forum: E-Bike General Discussion
Topic: DIY vs. Commercial: How/ Why(not)?
Replies: 32
Views: 983

Re: DIY vs. Commercial: How/ Why(not)?

Converting a Townie 21D bicycle that is not an ebike, converting it into a hub motor is a good option. No rear suspension, and only a suspension fork.

Sounds like you dont want mid drive system at all for a diy. So you will have to look at a rear hub motor.
MAC Geared hub motor - https://em3ev.com/product-category/e-bi ... ts-motors/
if you want to go uber-durable direct drive (no moving parts, no gear teeth to break) then a Leaf 1500W rear already laced into a wheel - https://www.leafbike.com/ install onto any bicycle you wish.

No need to buy a 250W wimpy store bought ebike. You seem to ride conscientiously, with care and common sense. Dont be afraid of the 1000W+ motors, nothing to fear at all. You can hide the rear hub motor behind some rear pannier bags, throw the battery and controller in there. No one will know.
viewtopic.php?f=3&t=104679
by Balmorhea
Mar 06 2020 9:47pm
Forum: Motor Technology
Topic: Leaf / leafmotor / leafbike high efficiency 1500w motor
Replies: 1558
Views: 217813

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

The Toecutter wrote:
Mar 06 2020 12:14am
Thinking of something like a Leafbike motor, but with 0.2 mm laminations, and less mass, perhaps around 7-10 lbs. With the right design, I think peak efficiencies of around 95% are possible without much in the way of added cost, which would allow similar or better peak power when compared to the existing offering from Leafbike that would weigh twice as much.
If it were that cheap and easy, you'd already be able to buy such a thing. The Chinese don't want to buy more material and ship more weight than they have to. I doubt there's that much extra efficiency to be had from thinner laminations, at the speeds hub motors run.

Lightweight, high power motors are temperamental. Keep in mind that no matter how good the peak motor efficiency, every motor starts at 0% and covers the entire range between zero efficiency and whatever its peak efficiency is. Half the motor mass means it burns up twice as fast when it's pushed out of its happy speed and load regime. I'd rather tote a few extra pounds and have a system that is much more fault tolerant.
by The Toecutter
Mar 06 2020 12:14am
Forum: Motor Technology
Topic: Leaf / leafmotor / leafbike high efficiency 1500w motor
Replies: 1558
Views: 217813

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

neptronix wrote:
Mar 05 2020 6:09pm
The direct drive hub world is in a sad state of affairs today.
Indeed. If I had the equipment, I'd love to give making a really well-designed one a shot...

Thinking of something like a Leafbike motor, but with 0.2 mm laminations, and less mass, perhaps around 7-10 lbs. With the right design, I think peak efficiencies of around 95% are possible without much in the way of added cost, which would allow similar or better peak power when compared to the existing offering from Leafbike that would weigh twice as much. I'd also design it to be mechanically stout so to minimize or eliminate the risk of the motor case cracking under hard pedal input and with enough clearance to accept even 9, 10, 11, 12 speed cassettes into 135mm dropouts and not just the standard 6/7 speed stuff for which parts are becoming increasingly scarce.

Looking forward to trying this 1500W motor in my possession out. I'll be ordering the rest of the parts tomorrow evening, other than the batteries, which will wait a few more days. I'm eyeing some Panasonic 2170s for sale that I intend to build a pack out of. A 77.7V 20AH pack weighing in at 12 lbs would be really nice... It would also max out the Phaserunner controller and allow about 4.5 kW peak applied to the motor, which in a velomobile, would allow acceleration performance comparable to a slow car from the 1980s, highway speed capability without overheating the motor, and at city speeds, car-like range as well, while on the highway at highway speeds, range would still be comparable to a 1st gen Mitsubishi iMIEV or Nissan Leaf. It will likely prove to be a very usable and bulletproof setup suitable for long distance travel, and will have enough performance in scenarios where it is required.
by ZeroEm
Mar 05 2020 5:20am
Forum: Motor Technology
Topic: Leaf / leafmotor / leafbike high efficiency 1500w motor
Replies: 1558
Views: 217813

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

The leafmotor is my first motor so I can not compare the drag to other motors. when riding with other non e-bikes I don't use use any power but have it on for the regen or braking and the drag is so low it does not seem to slow the bike down when coasting and don't feel it while peddling. my last 30 mile ride averaged 6w/km average speed 24 kph.
by neptronix
Mar 03 2020 12:10pm
Forum: Motor Technology
Topic: Leaf / leafmotor / leafbike high efficiency 1500w motor
Replies: 1558
Views: 217813

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

The Toecutter wrote:
Jan 26 2020 6:28pm
Also, does anyone have figures for the hysteresis drag torque and eddy current drag torque for the Leafbike motors? I could not find these figures published anywhere, but it would be nice to calculate how much wattage I'll need to overcome the cogging losses when riding with the drive system turned off, and to also be able to compare other motors for which these figures are published.
I doubt you'll find it.. but i've pedaled home a few times w/o motor and can say in a 26" - 700C wheel, and super low friction Schwalbe Almotions, and can say i made the trip 3 miles home without dying.. :lol:
by Hickbeard
Mar 02 2020 3:34am
Forum: Motor Technology
Topic: Leaf / leafmotor / leafbike high efficiency 1500w motor
Replies: 1558
Views: 217813

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

I just got tracking number for mine. Coming from Hong Kong. Didn't say anything about two weeks.

Sent from my CLT-L09 using Tapatalk

by markz
Mar 01 2020 8:58pm
Forum: E-Bike General Discussion
Topic: 14" Fatbike wheel with hub motor. Does it exist?
Replies: 9
Views: 475

Re: 14" Fatbike wheel with hub motor. Does it exist?

goldphive wrote:
Mar 01 2020 3:11pm
So far it looks like the most cost effective way to go is with this motor, https://www.leafbike.com/products/e-bik ... r-710.html

is Leafmotor a reliable company to order from? are they still operating with the current Covid-19 virus shutting china down?
https://www.leafbike.com/ is a reputable company in terms of products delivered. Have no clue as to quality of battery.

There is another company named LeafMotor, which could be related, probably not but who knows. No clue as to reputable or not.

http://www.qs-motor.com/product/10inch- ... hub-motor/

https://www.qsmotor.com/10-inch-scooter-motor/

https://www.goldenmotor.ca/categories/E%252dScooter/
https://www.goldenmotor.bike/product/48 ... hub-motor/

By the way, Goldenmotor.ca = Canada is better then Goldenmotor.com
by The Toecutter
Mar 01 2020 5:16pm
Forum: Motor Technology
Topic: Leaf / leafmotor / leafbike high efficiency 1500w motor
Replies: 1558
Views: 217813

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

Because of the coronavirus, my motor wasn't able to be built. They offered to send me a 4T wind 1500W version instead, 3mm phase wires pre-installed, no extra charge, and I took it. It arrived last Wednesday, and I was advised not to open the box for 2 weeks. I'll open the box when the 2 weeks has passed.

Now I need to get all the other parts needed to make it work. ebikes.ca is out of stock of Phaserunner controllers, for instance...

What is the maximum peak current these motors can take for 10 seconds at a time without suffering permanent damage? I'm thinking that limit is around 180A for the 4T wind version of the 1500W. I'm tempted to start with a Phaserunner running a 77.7V battery and 96A max phase current, then upgrade to an ASI BAC2000 controller and going full retard on input power to this motor(which may require waiting 6 months to a year to get after placing an order if the comments I've heard pertaining to one of its distributors are any indication).
by goldphive
Mar 01 2020 3:11pm
Forum: E-Bike General Discussion
Topic: 14" Fatbike wheel with hub motor. Does it exist?
Replies: 9
Views: 475

Re: 14" Fatbike wheel with hub motor. Does it exist?

So far it looks like the most cost effective way to go is with this motor, https://www.leafbike.com/products/e-bik ... r-710.html

is Leafmotor a reliable company to order from? are they still operating with the current Covid-19 virus shutting china down?
by turbo100
Feb 29 2020 11:57pm
Forum: E-Bike General Discussion
Topic: Best motor choice for rear hub conversion
Replies: 2
Views: 240

Best motor choice for rear hub conversion

Hello,
I have a Bafang BBS01 commuter and like it a lot.
Now I am planning to convert an old 26" MTB steel frame to rear hub electric and I had the leafbike 1500W hub in mind.
Now when I see that the leafbike hub shipping cost is 142USD (northern countries)... so I need to find alternative..

What other brand of rear hub in the 1000-1500W domain would you recommend?
RisunMotor seems to ba an alternative but have no idea about the quality.
Suggestions are very welcome!
by markz
Feb 29 2020 10:42pm
Forum: E-Bike General Discussion
Topic: A2B Octive/Metro purchase?
Replies: 52
Views: 1254

Re: A2B Octive/Metro purchase?

A2B is all proprietary, meaning you need their battery for the system to work. You cant just put on any battery you wish, unless its a simple hack but doubtful thats the case. Not worth the money to spend on A2B unless you score a good deal and build it up DIY with ebike kit from YESCOMUSA, Leafmotor, Leafbike, EM3EV, EBIKES.CA or any number of other locations.


viewtopic.php?f=3&t=104530&p=1530046&hi ... y#p1530046
Amberwolf
the a2b series are proprietary stuff (including the battery electronics), so if any part of it fails you wind up hacking it or replacing all the electrics to get it going again. :(

they're not bad bikes, just that i don't think there's really anywhere to get any new electric parts.

there are several threads about various versions of a2b bikes, including some complete electrics replacements.
by E-HP
Feb 24 2020 3:06pm
Forum: E-Bike General Discussion
Topic: Best Value fast ebike for my commute?
Replies: 42
Views: 2347

Re: Best Value fast ebike for my commute?

cbr shadow wrote:
Feb 24 2020 2:03pm
Do you know if the leafmotor is offered as a standalone motor+wheel rather than a whole kit, or is it best to order the kit and just not use their controller, but use everything else? Are the connectors usually pretty standard?
Yes, just choose your rim size and cassette vs freewheel:

https://www.leafbike.com/products/e-bik ... inch/c-19/
by cbr shadow
Feb 24 2020 2:03pm
Forum: E-Bike General Discussion
Topic: Best Value fast ebike for my commute?
Replies: 42
Views: 2347

Re: Best Value fast ebike for my commute?

E-HP wrote:
Feb 21 2020 7:43pm
cbr shadow wrote:
Feb 21 2020 4:44pm

Great info! Just a couple questions:
1) Is the main advantage of getting a phaserunner controller that it's smaller in size and has technology to make the motor quieter?
2) Does the 1500W motor you mentioned above (LeafBike) come available without the controller? I see the "kit" without battery is about $385 which seems super reasonable.

Thanks!
The advantages of the phaserunner are that it's small, has a wide operating voltage range (flexible so that you can run different voltages, or upgrade), uses FOC so efficient through the rpm range, proportional regen, and field weakening (it does more, but these are the feature I would want it for). It can also run sensorless.

My understanding is that the leaf motor is great, but the kits (i.e. controller) isn't the best, and support is so-so. This is based on the posts here on ES. I recall when I was thinking of getting one, the shipping was pretty high.

If you get the leafbike motor with a temp probe, the phaserunner has thermal rollback to cut power to the motor to keep it from overheating too.
That all good to know - thanks!
Do you know if the leafmotor is offered as a standalone motor+wheel rather than a whole kit, or is it best to order the kit and just not use their controller, but use everything else? Are the connectors usually pretty standard?
by E-HP
Feb 21 2020 7:43pm
Forum: E-Bike General Discussion
Topic: Best Value fast ebike for my commute?
Replies: 42
Views: 2347

Re: Best Value fast ebike for my commute?

cbr shadow wrote:
Feb 21 2020 4:44pm

Great info! Just a couple questions:
1) Is the main advantage of getting a phaserunner controller that it's smaller in size and has technology to make the motor quieter?
2) Does the 1500W motor you mentioned above (LeafBike) come available without the controller? I see the "kit" without battery is about $385 which seems super reasonable.

Thanks!
The advantages of the phaserunner are that it's small, has a wide operating voltage range (flexible so that you can run different voltages, or upgrade), uses FOC so efficient through the rpm range, proportional regen, and field weakening (it does more, but these are the feature I would want it for). It can also run sensorless.

My understanding is that the leaf motor is great, but the kits (i.e. controller) isn't the best, and support is so-so. This is based on the posts here on ES. I recall when I was thinking of getting one, the shipping was pretty high.

If you get the leafbike motor with a temp probe, the phaserunner has thermal rollback to cut power to the motor to keep it from overheating too.
by cbr shadow
Feb 21 2020 4:44pm
Forum: E-Bike General Discussion
Topic: Best Value fast ebike for my commute?
Replies: 42
Views: 2347

Re: Best Value fast ebike for my commute?

E-HP wrote:
Feb 21 2020 11:47am
Since you have a decent budget, I’d get the leaf bike 1500w motor since it has a good reputation and is very efficient.

Any direct drive motor will be dead silent with an FOC/sine wave controller like the phaserunner. Motors will handle just about any voltage, but it’s a matter of how long. If you have an 80% efficient motor and put 5000w into it, 1000w would go to heat, which you’d need to continuously shed, or the motor will heat up. So good for short bursts, but will meltdown if run for a long period if you can’t shed it fast enough. Higher power rated motors will handle the power longer (usually with a weight penalty). There are ways to shed more heat from a motor so you don’t have to get a bigger heavier motor, such as adding Statorade, or cooling fins, with a lower weight penalty.

You can use the Grin ebike motor simulator to see how various motors perform, and whether overheating is an issue.

Except for the speed (my motor is slow wound), my cheap $140 eBay motor would easily do that commute both directions twice with a 20Ah battery, but I pedal and keep it under 20.


Sent from my iPhone using Tapatalk
Great info! Just a couple questions:
1) Is the main advantage of getting a phaserunner controller that it's smaller in size and has technology to make the motor quieter?
2) Does the 1500W motor you mentioned above (LeafBike) come available without the controller? I see the "kit" without battery is about $385 which seems super reasonable.

Thanks!
by ZeroEm
Feb 21 2020 7:57am
Forum: Motor Technology
Topic: Leaf / leafmotor / leafbike high efficiency 1500w motor
Replies: 1558
Views: 217813

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

lol they come up for sale but need to be quick. Last used one, I grabbed it.
by bakaneko
Feb 17 2020 7:59pm
Forum: E-Bike General Discussion
Topic: Newb...What do you recommend?
Replies: 37
Views: 2194

Re: Newb...What do you recommend?

you can also work with leafbike to get what you need in terms of display and kit. leafbike is a reputable mainly ebike hub kit seller.

https://www.leafbike.com/products/brush ... age-1.html

pretty sure that is the led display you want; they also have an portrait one with a different display style. thumb throttle is no good imo. your thumb will be sore and its not as controllable as a half throttle, which is my preferred style.

you can give them an email and see what they can do. i imagine you would buy the controller and led display combo and then a motor (no kit). Then just ask if that is enough to put it all together; might have to buy a throttle and pas or you just ask them to make you a deal or something.
by Bullfrog
Feb 14 2020 6:26am
Forum: E-Bike Reviews & Testing
Topic: My experience with "leafbike" electric bike kit
Replies: 32
Views: 17319

Re: My experience with "leafbike" electric bike kit

Nothing wrong with a small wheel :lol: . Pic below is a bike I built with a 20" rear wheel and a 4" wide tire (Vee Mission Command 20x4"). With any given hub motor, the only way to change the gearing once you bought the motor is to change the tire diameter. My friend called it the "Clown Bike" because it looked like it should be in the circus with 6 or 7 clowns climbing on it.
Clown Bike 2.jpg
Clown Bike 2.jpg (206.09 KiB) Viewed 518 times
by john61ct
Feb 08 2020 9:45pm
Forum: Motor Technology
Topic: Leaf / leafmotor / leafbike high efficiency 1500w motor
Replies: 1558
Views: 217813

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


The Toecutter wrote:torque for the Leafbike motors

Grin All-Axle hub motors
Realize OT, but anyone have a comparison for the "real world" **max torque** between these two?

I'm particularly interested in, at low rpm say standing start on a long steep hill situation.

Which dissipates heat better? I know the Grin is designed to work with statorade, is the leafbike motor?

by The Toecutter
Jan 26 2020 6:28pm
Forum: Motor Technology
Topic: Leaf / leafmotor / leafbike high efficiency 1500w motor
Replies: 1558
Views: 217813

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

Thank you for sharing that link. It will come in handy soon.

Also, does anyone have figures for the hysteresis drag torque and eddy current drag torque for the Leafbike motors? I could not find these figures published anywhere, but it would be nice to calculate how much wattage I'll need to overcome the cogging losses when riding with the drive system turned off, and to also be able to compare other motors for which these figures are published.

For example, the Grin All-Axle hub motors used for front drive tadpole trikes have an eddy current drag torque of 0.0005 Nm/rpm and a hysteresis drag torque of 0.45 Nm. They are very lossy and have the thicker 0.35mm laminations.