Search found 383 matches

by TMaster
Dec 12 2009 11:24pm
Forum: EBike Technical
Topic: DIY 10awg phase leads through axle in 9C hubmotor.
Replies: 102
Views: 22443

Re: DIY 10awg phase leads through axle in 9C hubmotor.

Very Nice! I went and checked and the motor wires are just about 16 AWG. The controler wires are about 12 AWG though. I guess they couldn't fit them in the axle hole haha! Does anyone use the e-brake's? I was acutally thinking about doing this with some 12 Awg wire. I don't have my setup running yet...
by TMaster
Dec 12 2009 6:44pm
Forum: EBike Technical
Topic: DIY 10awg phase leads through axle in 9C hubmotor.
Replies: 102
Views: 22443

Re: DIY 10awg phase leads through axle in 9C hubmotor.

I've always wondered about this situation with a brushless motor. There is a difference because you are really sending the motor an alternating current instead of direct. I'm not sure how the current/amps works in this situation, but there are 3 wires to spread the load instead of 2. The smaller gau...
by TMaster
Dec 12 2009 2:19pm
Forum: EBike Technical
Topic: What voltage for a 48v LiFePO4 & SLA charged & low?
Replies: 2
Views: 3314

Re: What voltage for a 48v LiFePO4 & SLA charged & low?

Lifepo4 3.6v or 3.65v absolute max peak voltage per cell depending on the brand or type. (16 cells = 57.6v or 58.4v)( 48V configuration) 2.0v Low voltage discharge per cell, Athough many people use 2.5v because theres hardly any capacity left after 2.5v per cell anyway. (40v for the entire pack woul...
by TMaster
Dec 11 2009 10:59pm
Forum: EBike Technical
Topic: Loud freewheel & Truing
Replies: 11
Views: 2322

Re: Loud freewheel & Truing

I plan on keeping the 5 speed for now. I have some pedro's synthetic clear grease thats works wonders for bearings and headsets. I would rather clean the freewheel out and put that grease in there. Oil is runny and tends to come out eventually. Although it is a temping quick fix. I plan on truing th...
by TMaster
Dec 11 2009 10:24pm
Forum: EBike Technical
Topic: 15 Fet controller mods
Replies: 6
Views: 1792

15 Fet controller mods

Hello, I'm in the process of choosing my battery configuration for my new 1000W, 48V kit. The controler has the P75NF75 fet's, and 63V caps, and various other caps, one small cap underneith the board. I was thinking of running 18S2P A123's, 59.4v nominal and (64.8v peak). After scanning the forums a...
by TMaster
Dec 09 2009 1:39am
Forum: EBike Technical
Topic: Loud freewheel & Truing
Replies: 11
Views: 2322

Re: Loud freewheel & Truing

Thanks for all the info guys! I think I will just keep the 5 speed on for now; then after a while re-spoke for an 8 speed. The free wheel tool that works for my newer shimano Hubs seems to be the same for the freewheel on the 9C. But Yes it does need to be drilled out, or I can shell out for a new. ...
by TMaster
Dec 08 2009 1:30pm
Forum: EBike Technical
Topic: Loud freewheel & Truing
Replies: 11
Views: 2322

Loud freewheel & Truing

I just bought a 48V 1000W rear kit. After spending days on here I think it's a 9C motor. It has a 5 speed cassette, but it is twice as loud as my other bikes quality freewheels. The shifters are 8 speed, but I will just adjust the movment for 5. My questions are: Is it possible to quiet down the che...
by TMaster
Dec 03 2009 5:37pm
Forum: EBike Technical
Topic: Would you use a 48v 10AH LiFePO4 with a 1000w hub motor ?
Replies: 15
Views: 2939

Re: Would you use a 48v 10AH LiFePO4 with a 1000w hub motor ?

Hello I am new to the forums here, and I just bought the same kit 1000watt has with that silver controler. I took the back cover off and mine also has 2 shunts, but there is another spot for a 3rd shunt. Would there be any benefit to adding a 3rd one to the board? I plan on using a lot more capable ...