Search found 383 matches

by TMaster
May 07 2014 8:26am
Forum: E-Vehicles General Discussion
Topic: GOT MY VOLT 2014 TODAY !!
Replies: 32
Views: 3950

Re: GOT MY VOLT 2014 TODAY !!

The best I have gotten is 52.5 Miles (84.5 Km) on 10.3 kWh. The 2013 Battery has a 10.5 kwh useable. Seems the 2014's are putting out a little more capacity. :D I would like to find that guy on the GMvolt forum and send him a Volt computer module to modify to use more of the capacity.
by TMaster
May 03 2014 11:45am
Forum: E-Bike Build Threads / Photos & Video
Topic: My 2nd build 5kw hub motor
Replies: 12
Views: 5640

Re: My 2nd build 5kw hub motor

I run KoolStop pads on the front wheel of my E-bike. They are the best and don't wear your rim out. I use a Avid V-brake type caliper with the V-brake or V-brake 2 dual compound pads. Wet and dry use.
http://www.koolstop.com/english/rim_pads.html
by TMaster
Apr 24 2014 12:18pm
Forum: Battery Technology
Topic: A123 Cells, new, legit, factory direct!
Replies: 52
Views: 8821

Re: A123 Cells, new, legit, factory direct!

I ordered 10 of the M1 cells last week to finish my modification from 3P to 4P. Erik shipped them out the same day. Very Very happy with the service. Everything Erik stated above is correct about the cells. :) 2 of the cells were 2029 and 2065 Mah. I tried cycling them at 3ah and 5ah to 3.60 to 2.00...
by TMaster
Apr 19 2014 4:13pm
Forum: E-Bike Technical
Topic: Using CAT5 cable as a Balance Lead extension
Replies: 3
Views: 457

Re: Using CAT5 cable as a Balance Lead extension

I'm using 22AWG for my balance charging setup. 2 to 3 feet long depending on which charger I am using. I would use 22AWG or 20AWG if I were you.
by TMaster
Apr 15 2014 9:42am
Forum: E-Bike General Discussion
Topic: How far can you mod a 28mm (9C Clone) DD HUb?
Replies: 57
Views: 7964

Re: How far can you mod a Yescomusa DD HUb?

I have measured 110c (230 degrees F) though the vent holes I drilled on my yescom motor back 4 years ago when I built my E-bike. I'm guessing it has been up to 120c (250F). The motor has around 700 miles on it now. I pretty much ride for fun with an occasional errand. I have not burned it up yet. It...
by TMaster
Apr 14 2014 6:47pm
Forum: E-Bike Technical
Topic: Residue between FET legs is blowing controllers - solution?
Replies: 5
Views: 916

Re: Residue between FET legs is blowing controllers - soluti

I use a toothbrush and acetone. Then squirt bottle rinse off with acetone. Sometimes 97% isopropyl alcohol. But the Acetone cleans better. :D
by TMaster
Apr 13 2014 10:54pm
Forum: E-Bike Technical
Topic: Please help to ID this motor
Replies: 20
Views: 1627

Re: Please help to ID this motor

You will need all new spokes. I have my motor centered with the rim and only a 5 speed cassette will fit. I have 2 tube spacers made from some stainless steel that fill the space to 135mm. I also machined spacers to space the disc brake out to line up with the caliper. Not sure how the 7 speed fits,...
by TMaster
Apr 13 2014 5:57pm
Forum: E-Bike Technical
Topic: Please help to ID this motor
Replies: 20
Views: 1627

Re: Please help to ID this motor

I agree, you need to have a crossed spoke pattern. I wouldn't even run it like that. I would re spoke the whole rim. sigh, its a time consuming process.

The motor looks like a clone of all the others, 9C, yescom, golden motor, etc... All 1000W. They can handle a lot.
by TMaster
Apr 10 2014 11:39pm
Forum: Battery Technology
Topic: Fuses- again!
Replies: 28
Views: 2823

Re: Fuses- again!

I have been using a 32V - 60A Maxi blade type fuse for the last 4 years and have not blown or burnt it up yet. I push peaks of 110A through it and some constants of 30-50 amps @ 65V-76V I actually have 4mm bullet connectors soldered right to the blades, because the normal fuse holder is freaking hug...
by TMaster
Mar 24 2014 1:29pm
Forum: E-Bike Technical
Topic: 72v + users, do you use a pre-charge resistor?
Replies: 34
Views: 5011

Re: 72v + users, do you use a pre-charge resistor?

All I use is a crystalyte 40A key switch with 12AWG modified wires. I've been pumping peaks of over 100A through it for the last 3 years. All I have between the battery and the controller is this switch. 0 problems. no sparks, nothing.
by TMaster
Mar 07 2014 1:32pm
Forum: E-Bike Technical
Topic: Lyen 12 & 18 FET Current Capability
Replies: 14
Views: 1913

Re: Lyen 12 & 18 FET Current Capability

It does only hit 110 when taking off for a few seconds. After that it never gets that high. Even when going 20mph and pushing the throttle to full, I think the max for a few seconds is around 60-70 Amps. There is no short, the halls are correct. I have a yescom type motor GM, 9C clone and I had to s...
by TMaster
Mar 03 2014 11:18am
Forum: E-Bike Technical
Topic: Best Multimeter?
Replies: 45
Views: 4405

Re: Best Multimeter?

I picked up a Fluke 115 off Ebay about 4 years ago for $55. Its a great meter and still is working perfect.
by TMaster
Mar 01 2014 1:55pm
Forum: E-Bike Technical
Topic: Lyen 12 & 18 FET Current Capability
Replies: 14
Views: 1913

Re: Lyen 12 & 18 FET Current Capability

I use a Watt/amp/volt meter that is in between the battery and controller and it does show pulling 110A peak from the battery. Nifty that my settings on the controller are phase 110A also. But maybe that's how its suppose to be?
by TMaster
Mar 01 2014 11:51am
Forum: E-Bike Technical
Topic: Lyen 12 & 18 FET Current Capability
Replies: 14
Views: 1913

Re: Lyen 12 & 18 FET Current Capability

My phase current is set for 110A, and that's what it peaks at. My rated current us set for 41A. Normal settings are 80/30. I was told you need to have a certain ratio between those two values. I don't want the Amps any higher than 110 going to the motor, thus 41 is correct for rated current. Now If ...
by TMaster
Feb 28 2014 7:14pm
Forum: E-Bike Technical
Topic: Lyen 12 & 18 FET Current Capability
Replies: 14
Views: 1913

Re: Lyen 12 & 18 FET Current Capability

The 12 Fet outputs 45A max to the motor with the stock programming. It does not pull 45A constant on my motor, its just peak for a few seconds. I have been going up hill full throttle and have seen 45-65 amps constant for about 5 to 10 seconds. But I have my controller set for 110 Amps peak. The mot...
by TMaster
Feb 23 2014 2:12am
Forum: E-Bike Technical
Topic: Twitchiness at 40+ mph
Replies: 34
Views: 3121

Re: Twitchiness at 40+ mph

Your stem is really short and that is most likely causing the twitchiness. I don't see how anyone didn't notice that. I can't tell how long your handle bar is, but it looks short. That will effect it also. I would suggest putting a longer stem on, and if it is too high up, flip it over so it is angl...
by TMaster
Feb 15 2014 3:53am
Forum: E-Bike General Discussion
Topic: WOW! Brain overload.
Replies: 73
Views: 6033

Re: 12 or 15s?

I started out with this kit. I ran 18S (59.4V nominal) A123's to start out. I'm not sure if I replaced the capacitors for 18S or not, but I'm sure I did when I went to 20S to 75V cap's. I had to lay the caps on their sides for them to fit. I also changed the power resistor inside to handle the more ...
by TMaster
Feb 10 2014 1:55pm
Forum: E-Vehicles General Discussion
Topic: I'm considering buying a Chevy Volt
Replies: 103
Views: 13625

Re: I'm considering buying a Chevy Volt

I just wanted to share my experience with the Volt: My father and brother both have 2013 Volts. My brother plugs in at the public stations charging 220V and at home on the 120V. He has gotten up to 52 miles(83 Km) on a charge before. My father has only gotten up to 45 miles. My brother has put over ...
by TMaster
Mar 28 2013 6:55pm
Forum: E-Bike Technical
Topic: How do you build a battery, exactly?
Replies: 25
Views: 1785

Re: How do you build a battery, exactly?

Frame and suspension fork, 2.3 to 2.5 tires, big disc brakes 180 to 203mm, batteries in the center triangle. I would use 1" or 1.25" wide rims minimum. Make sure the frame build up is done well. You are hauling a$$ going 40mph. I'm pretty comfortable at 30mph, but at 40+ I am on my toes concentratin...
by TMaster
Mar 24 2013 7:34pm
Forum: E-Bike Build Threads / Photos & Video
Topic: Isolated balance charging
Replies: 0
Views: 335

Isolated balance charging

I finally finished my charging setup, here are a few pics and video.

http://www.youtube.com/watch?v=NZstUFsPXuc
by TMaster
Mar 05 2013 1:50am
Forum: Battery Technology
Topic: A123 vs. Turnigy (LiPo) vs. Zippy (LiFePo4) vs. you name it
Replies: 53
Views: 7118

Re: A123 vs. Turnigy (LiPo) vs. Zippy (LiFePo4) vs. you name

amberwolf needs to get paid for all the time and effort he spends on here :D
by TMaster
Mar 05 2013 1:10am
Forum: Battery Technology
Topic: A123 vs. Turnigy (LiPo) vs. Zippy (LiFePo4) vs. you name it
Replies: 53
Views: 7118

Re: A123 vs. Turnigy (LiPo) vs. Zippy (LiFePo4) vs. you name

A123 cylindrical cells, and Headway cylindrical cells seem to be the best imo for performance, durability, safety and longevity. Only negative is the smaller capacity needed to parallel more cells together. All the prismatics puff, even the A123 prismatics. In the classifieds a guy is selling new Ge...
by TMaster
Feb 13 2013 7:43pm
Forum: E-Bike Technical
Topic: tire replacement options
Replies: 18
Views: 2289

Re: tire replacement options

2.4 CST cyclops are great, $13 each. I have 600 miles on mine, the front looks almost new the rear looks about 60%
by TMaster
Feb 13 2013 5:52pm
Forum: Battery Technology
Topic: Best BMS or a list of best BMS?
Replies: 46
Views: 4684

Re: Best BMS or a list of best BMS?

I have my LVC on the controller set for around 56V (2.43V per cell) This gives leeway for the cells that are slightly less capacity, not to hit below 2.0V per cell. My setup in my signature. But yes thats the only drawback not having a BMS, but it's not much of one. One you charge the cells again th...
by TMaster
Feb 13 2013 12:58am
Forum: Battery Technology
Topic: Best BMS or a list of best BMS?
Replies: 46
Views: 4684

Re: Best BMS or a list of best BMS?

The best BMS is no BMS. :lol:

RC balance chargers and LVC on the controller. Done. No fail. No problems.

Ok ok, this is not benefiting the thread, but I just had to post it. :D