Search results

Date Relevance Most replies

  1. Z

    Looking for a balancing BMS, no charge/discharge control

    Everyone is missing the point here. I HAVE used this for this exact purpose and it works great for A123 cells as they balance so well to begin with. I guess I will just make an extension balance lead out the side of the bike to balance the pack every so often.
  2. Z

    Looking for a balancing BMS, no charge/discharge control

    http://www.rcgroups.com/forums/showthread.php?t=1863221 See this, this is a simple balancing board for RC batteries, I have one, works awesome, but you must manually turn it on as it has auto off when balanced. I am looking for a nice little board that can balance a motorcycle starter battery...
  3. Z

    I've got a 9C motor open for repair, what else?

    Hassle... down right impossible for me. I put the original wires back in. Pics to follow.
  4. Z

    I've got a 9C motor open for repair, what else?

    It's just twisted after I opened it, they have always been straight. I really don't know why it broke, probably a bad solder... the whole thing isn't built very well to be honest.
  5. Z

    I've got a 9C motor open for repair, what else?

    Found the problem for sure now... check out that broken little B@$!E&D inside there. Going to open it up and solder her in and use epoxy resin to secure the wires better.
  6. Z

    I've got a 9C motor open for repair, what else?

    Okay, more testing, the one sensor lead (green) from the controller does not read 5.00volt like the other two signal leads, so it looks like this problem lies in the controller. I DID switch the bad signal lead with another sensor to verify the lead is bad. Should I attempt to open the...
  7. Z

    I've got a 9C motor open for repair, what else?

    I think I should change the bearings out since the motor is open again, and I see one is definitely no good anymore, motor lead side bearing is still very smooth but it is still getting tossed. I think 12awg wire is what I will be using. I have been playing around with all the leads, I CAN'T...
  8. Z

    I've got a 9C motor open for repair, what else?

    I found the problem... wires where they enter the motor shaft... I did more testing and found one hall leg wire has been sheared somewhere inside the motor shaft. Check the pic. So if I have to change the sensor wires, I may as well change the motor wires as well. However, only if the proper...
  9. Z

    I've got a 9C motor open for repair, what else?

    Well thanks for all the posts and tips I might consider them, but... I replaced the hall sensors, all very nice work, but still the same thing, will half ass run very stuttery, sometimes smooth, and then it will just cut out completely after two seconds of WOT (un-loaded). It was late lat...
  10. Z

    I've got a 9C motor open for repair, what else?

    No, it's not being over worked, drawing about 1200watts at top speed (50-55kph) , the motor is warm to the touch after a long ride, but nothing scary... I just thought the extra wouldn't be a bad idea. I am simply trying to do preventative maintenance here.
  11. Z

    I've got a 9C motor open for repair, what else?

    Long time, not post here... I've got a 9C motor from 2010 opened up to replace the hall sensors that went bad, but I am wondering if anyone has any tips or advice on others things that can be done to improve reliability or cooling? I have thought about using a non-detergent motor oil in the...
  12. Z

    Plettenberg Nova motors and MST controllers: 15, 30, 150kW

    There is a thing called liquid cooling... It relies on circulating liquid coolant around the motor stator to remove waste heat.
  13. Z

    Plettenberg Nova motors and MST controllers: 15, 30, 150kW

    Mind you the Plettenburg motors have been designed for automotive use with proper build to accompany it... whereas the Neu motor is all open design (for R/C), however, all you need to do it have sealed covers from and back... No motor sensors on the Neu either.
  14. Z

    Plettenberg Nova motors and MST controllers: 15, 30, 150kW

    From their motor spec sheet. It seems like $1100 would be a typo almost, per kW / lb / efficiency, I think these motors are THE best bargain available, and again, they are top notch quality. It looks like they do not have the 4440 anymore by the looks of it... to be honest, I never remember...
  15. Z

    Plettenberg Nova motors and MST controllers: 15, 30, 150kW

    Are the power ratings for the Nova 15, 30 , and 150kw continuous or peak? Neu motors has a 4430 12 pole motor that weighs 10 lbs and has a power rating of 15kW continuous and 30kW Peak. It costs $1100 USD. Seems like a great bargain to me, considering Neu motors are awesome quality, hand...
  16. Z

    Plettenberg Nova motors and MST controllers: 15, 30, 150kW

    OMG, I think the Emrax motor got beat, yeah?
  17. Z

    A123 2.5Ah 26650 M1-B available?

    bump
  18. Z

    A123 2.5Ah 26650 M1-B available?

    You guys guys are telling me no one has bought these yet?
  19. Z

    A123 2.5Ah 26650 M1-B available?

    Can you buy these yet? If so, has anyone bought them and where from.
  20. Z

    A123 26650 M1B Cell 2.5 AH - new?!

    bump
  21. Z

    A123 26650 M1B Cell 2.5 AH - new?!

    Bump
  22. Z

    A123 26650 M1B Cell 2.5 AH - new?!

    Hey does anyone know where I can buy some of these?
  23. Z

    Cold winter use, self battery heating?

    Those reptile heaters look decent. The ride to the university isn't a problem, it should stay warm during the ride yes, but it's the cooling off for 5 hours that is the problem, and he can't take the battery off either. The pack won't loose any 'extra' in the cold if it is kept warm, and the...
  24. Z

    Cold winter use, self battery heating?

    Hey guys I have been pondering this issue for awhile now and was thinking.... I have a 16s 15AH flat A123 pack (actually my brother, but I have built it for him), he goes to university and now that it is winter it can get cold (very cold) down to -35 Celcius (-31 F). It hasn't been near this...
  25. Z

    100C nanoTech batteries, 0.25/wh!!!

    Jonescg, notice post count: 666
Back
Top