Search found 109 matches

by transposon
Jun 10 2020 8:32am
Forum: Motor Technology
Topic: KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)
Replies: 4082
Views: 376593

Re: KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW

I am having a lot of trouble with this firmware. I have the S12SNN 72V controller and a leaf hub motor. The motor ran fine with the controller stock. But now with the new firmware, nothing happens when I hit the throttle. Does anyone have any ideas? Thanks.
by transposon
May 24 2020 12:58am
Forum: Motor Technology
Topic: KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)
Replies: 4082
Views: 376593

Re: KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW

Does anyone have working settings for a S12SNN controller and a leaf 1500W motor? I just unlocked the controller, but am not sure what settings to use.
by transposon
Apr 22 2020 10:05pm
Forum: Motor Technology
Topic: Leaf / leafmotor / leafbike high efficiency 1500w motor
Replies: 1594
Views: 226390

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

Thanks for the link ZeroEm, I have a general question about the simulator. According to the power curve, I will be using 40 battery amps when I hit 25mph. I am assuming that this power draw is at the instant that I hit that speed and while using a speed/voltage based throttle. Once I stop accelerat...
by transposon
Apr 22 2020 6:05pm
Forum: Motor Technology
Topic: Leaf / leafmotor / leafbike high efficiency 1500w motor
Replies: 1594
Views: 226390

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

Should achieve 30+ mph easily with a 26" tire at 52/40. My YESCOM "1000w" motor (don't know the winding, but it must be "fast") easily goes 33 mph at 52/30; 180 pound rider, 55 pound bike, flat terrain, no wind; upright seating position on a MTB. Good to know. I had a similar 1000W hub kit before r...
by transposon
Apr 22 2020 6:00pm
Forum: Motor Technology
Topic: Leaf / leafmotor / leafbike high efficiency 1500w motor
Replies: 1594
Views: 226390

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

by transposon » Apr 22 2020 7:24am I am now trying to figure out the appropriate controller for this motor. I am having trouble understanding the motor simulator. I wanted to be able to hit ~30 mph for fun once in a while. For longer distances, I want to stay around 22-25mph. I plan on using a KT c...
by transposon
Apr 22 2020 7:24am
Forum: Motor Technology
Topic: Leaf / leafmotor / leafbike high efficiency 1500w motor
Replies: 1594
Views: 226390

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

Thanks for all of the help everyone. I purchased a 5T 1500W motor. I am now trying to figure out the appropriate controller for this motor. I am having trouble understanding the motor simulator. Can someone give me a general recommendation on a controller that would allow me to cruise at ~25mph at ...
by transposon
Apr 21 2020 7:02pm
Forum: Motor Technology
Topic: Leaf / leafmotor / leafbike high efficiency 1500w motor
Replies: 1594
Views: 226390

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

Thanks for all of the help everyone. I purchased a 5T 1500W motor. I am now trying to figure out the appropriate controller for this motor. I am having trouble understanding the motor simulator. Can someone give me a general recommendation on a controller that would allow me to cruise at ~25mph at 5...
by transposon
Apr 20 2020 7:55pm
Forum: E-Bike Reviews & Testing
Topic: Sabvoton SVMC072150 controller review, variable regen *PICS*
Replies: 358
Views: 77430

Re: Sabvoton SVMC072150 controller review, variable regen *PICS*

Does this have the option to use a torque/current based throttle or a voltage/speed based throttle?
by transposon
Apr 19 2020 8:10pm
Forum: Motor Technology
Topic: KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)
Replies: 4082
Views: 376593

Re: KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW

Has the BMSBattery bluetooth adapter been implemented yet? https://bmsbattery.com/parts/920-17236-bluetooth-module-for-s06s-bl-or-s09p-bl-controller.html#/497-voltage-36v They have versions for different voltages, so it looks like anything above 48V is out. Has anyone tried this for higher voltages...
by transposon
Apr 19 2020 9:29am
Forum: Motor Technology
Topic: KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)
Replies: 4082
Views: 376593

Re: KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW

Has the BMSBattery bluetooth adapter been implemented yet?
https://bmsbattery.com/parts/920-17236- ... oltage-36v

They have versions for different voltages, so it looks like anything above 48V is out. Has anyone tried this for higher voltages?
by transposon
Apr 19 2020 6:03am
Forum: E-Bike General Discussion
Topic: Is this a good controller?
Replies: 4
Views: 361

Re: Is this a good controller?

I saw this on Ebay and am also interested in it. I wonder if it has a torque based throttle.
by transposon
Apr 14 2020 5:37pm
Forum: Motor Technology
Topic: Programmable controller options
Replies: 2
Views: 485

Re: Programmable controller options

Thanks for the reply st35326,

Does the Bluetooth app give real-time feedback on speed, wattage, etc. ?
by transposon
Apr 13 2020 2:57am
Forum: Items for Sale - New
Topic: ADAPTTO MIDI Kit
Replies: 2
Views: 1049

Re: ADAPTTO MIDI Kit

Is this still available?
by transposon
Apr 13 2020 12:10am
Forum: Motor Technology
Topic: Programmable controller options
Replies: 2
Views: 485

Programmable controller options

I just purchased a 1500W 5T leaf motor and would like to pair it with a programmable controller that can go up to 72V. I would like something reliable. So far I have found the following controllers: Nuclular - These look great, but it is probably out because I will not be able to acquire one by this...
by transposon
Mar 21 2020 11:35pm
Forum: Motor Technology
Topic: Leaf / leafmotor / leafbike high efficiency 1500w motor
Replies: 1594
Views: 226390

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

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 ...
by transposon
Mar 20 2020 2:56pm
Forum: Motor Technology
Topic: Leaf / leafmotor / leafbike high efficiency 1500w motor
Replies: 1594
Views: 226390

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

I am in the market for new hub motor and these leaf kits look pretty good. I am not sure what to get between the 1000W nd the 1500W. I plan on using a 26" wheel on an aluminim MTB. I am on the heavy side at 225lbs and would like to carry a bit of cargo from time to time so maybe 270lbs + bike weight...
by transposon
Mar 16 2020 12:32pm
Forum: E-Bike General Discussion
Topic: Hub motor is stuck
Replies: 10
Views: 700

Re: Hub motor is stuck

dogman dan wrote:
Mar 15 2020 8:23am
I'm betting its the freewheel jammed on the motor cover.
It was stuck without the freewheel as well.
by transposon
Mar 14 2020 6:36pm
Forum: E-Bike General Discussion
Topic: Hub motor is stuck
Replies: 10
Views: 700

Re: Hub motor is stuck

You sure you plugged back the phase in correct order ? Crossed phases / hall could explain a stuck motor. If you can even spin the wheel alone (no controller) it could be shorted phases. I cannot spin the motor either with or without the controller. The phase wires use a 9 pin connector that goes t...
by transposon
Mar 14 2020 5:09pm
Forum: E-Bike General Discussion
Topic: Hub motor is stuck
Replies: 10
Views: 700

Hub motor is stuck

So, my frustration with this generic rear hub motor continues. A few months ago after riding in the rain, the motor began to cut out rapidly, reducing my top speed to a jerky 10 mph. I let the motor and controller dry out for a few weeks and it began working again. Soon after that, the freewheel tha...
by transposon
Feb 18 2020 6:53pm
Forum: Battery Technology
Topic: Common pack design mistakes, how to avoid?
Replies: 322
Views: 56494

Re: Common pack design mistakes, how to avoid?

Voltron wrote:
Nov 02 2019 5:20pm
Yes... More buss bars are better... Some just skip the strips and do full sheets. The only downsides are more materials and time costs, but for a boutique battery designed to be abused, worth it.

IMG_0576.JPG
IMG_0573.JPG
Voltron, where do you buy these nickel sheets?
by transposon
Feb 12 2020 10:17pm
Forum: Battery Technology
Topic: Thoughts on this battery harvesting scenario?
Replies: 16
Views: 1890

Re: Thoughts on this battery harvesting scenario?

Typically, cell "strips" are standardized, 6x might be 0.20? Keep same "strip" type in series! and use heavier parallel wires? If nearing cell output capability, might want to add "2" strip, but removing "6" strip - not recommended. According to my calipers, they are all 0.15mm in thickness. Why wo...
by transposon
Feb 09 2020 7:38pm
Forum: Battery Technology
Topic: Thoughts on this battery harvesting scenario?
Replies: 16
Views: 1890

Re: Thoughts on this battery harvesting scenario?

After opening up a few packs, for the series connections, some of the packs use 6x0.15 strip while others use 8x0.15 strip.

Would this make it necessary to pull off and reweld all of the strip so that they all match in cross section/current capability?
by transposon
Feb 09 2020 5:19pm
Forum: Battery Technology
Topic: Thoughts on this battery harvesting scenario?
Replies: 16
Views: 1890

Re: Thoughts on this battery harvesting scenario?

I am thinking of making a 14s6p 25r pack. My controller is a 26A KT controller. I am assuming 30A max on starts and steep hills. If my math is correct, 30A / 6p = 5A per series string. I took out my calipers and measured the nickel strip. 6x0.15mm. Should I be concerned about the current capacity of...
by transposon
Feb 05 2020 3:24pm
Forum: Battery Technology
Topic: Homemade Battery Packs
Replies: 1681
Views: 507446

Re: Homemade Battery Packs

I'm glad to hear that you are safe and that we will continue to get your posts in the forum.