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  1. J

    Heinzmann PMS-126 motor

    Model: PMS-126 Power : 7kw 100% duty cycle Service: S1 Sin/cos encoder Was used on Bramo Enertia Plus motorcycle Price 300USD + Shipping Location Quebec, Qc, Canada. email : michelcotee@yahoo.ca
  2. J

    Motor Analysis Sotfware

    Hi, I am currently designing a motor and since Emetor is down I am wondering if there is anything simpler than FEMM that can be used. Motoranalysis does not compile on my computer even after adding proper matlab runtime. Just a simple static magnetic cicuit would be a good start. Thanks for...
  3. J

    Electric Snow Blower (Gravely)

    Hi Guys, Just wanted to share some build pictures and a video of my 1972 2 wheel tractor conversion. The motor is a Heinzman PMS-126 that I bought here a couple years ago. Sevcon Gen4 size 6 drive is overkill but this is what I had on hand. I use my bike battery that is 24S11P li-ion of LG HG2...
  4. J

    Rc Twin Mid Drive

    Just want to share my build Twin Rc drive 20 Wh/km @ 40km/h Belt reduction 12.24 : 1 12S 22P LG18650 HG2 Pack Grade B 5000W input
  5. J

    Storage temperature (Shipping)

    Hi Can a battery be damaged by cold weather in shipping ? SOC was 3.62V If the cell is subjected to -20C with this state of charge what happen ? Damage or no ? Regards
  6. J

    Joby motor dirt bike !

    I come across this video and the joby motor is doing a great job https://www.youtube.com/watch?v=cxBbNV6jK8E I someone have details about this build ? Regards
  7. J

    Power factor importance

    I am looking to design hub and I was wondering How important the power factor may be. First motor Power factor 0.60 Efficiency: 0.80 Second motor Power factor 0.80 Efficiency : .75 Say with a 10kw controller (current limited on phases like Kelly) Is the second one will transmit 6000W to the...
  8. J

    My Lacing job,

    Hi, Just wanted to share Straight spokes dont cut it, I snapped many So I took the bull by the horns use a drill to align the holes and laced my wheel. Not too hard, stronger and better torque transfer (less twist) that you can feel
  9. J

    9C 2805

    Based on your experience, How long it should take to go over 60C while feeding it with 40A and 80 volts at 600rpm (3200W input) My hill dont last long enough but after 1.2km my windings were at around 60C (with small active cooling) Thanks
  10. J

    Schwalbe Big Apple = smooth

    I tried the big apple. This tire is supposed to replace suspension. It cant be done but it is much more comfortable than a comparable Hookworm. I will keep it for sure and it seems to have less drag too.
  11. J

    9C axel twisting

    Hi, I removed my motor to play/upgrade side cover to allow it to pass big phases wires and I found: That I twisted my axel with 18S lipo X 100A So even with a torque arm that clamp the axel, it is not enough, I need 2 !! to share the load. I could tell it was twisting because the opposite...
  12. J

    Torque Arm solution

    Just to share my torque arm solution without any backlash it can take high torque and work good with 700w regen
  13. J

    9C + Kelly =20% less RPM/V ?

    Hi, I have a 9C 2805 on a 20" wheel based on my observation I shoul get 70km/h and I get only 59 km/h at 22-25A x 70V The peak amps go to 100A on start up but as soon as I take some speed they got back down like I am way too low geared. It is like I have 10 rpm/v instead 12.2 rpm/v is Kv of 9C...
  14. J

    9C rim runout

    I just bought a 9C that had quite good runout like 0.15'' and the rim losened all its spokes after 5 km, I did retension them but I had to locktite them since they loosened a second time. The tird time, the nipples dont turn but spokes stretch. :-( I am not able to have a true wheel even with...
  15. J

    Lipo BMS where ?

    I am searching a BMS for lipo. I found tppacks but they are out of stock, is there something else ? I want to manage 30S2P or 32S2P 10Ah Thanks
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