Search found 322 matches

by fractal
Jun 15 2012 8:14am
Forum: E-Bike Technical
Topic: no load test, what happened???
Replies: 4
Views: 482

Re: no load test, what happened???

i cant really test with another controller. when i turn it on though, i hear a click sound in the motor wich seems pretty odd. first time i've ever heard that when turning on the controller.
by fractal
Jun 15 2012 7:05am
Forum: E-Bike Technical
Topic: pulse width modulation in controllers
Replies: 23
Views: 1696

Re: pulse width modulation in controllers

thanks for all the help!!! :D
by fractal
Jun 15 2012 7:03am
Forum: E-Bike Technical
Topic: no load test, what happened???
Replies: 4
Views: 482

no load test, what happened???

i was testing for phase/hall combination. as soon as i see the amps going up, i let go of the throttle and realize that i have a bad combo. then, nothing!!! no throttle response, but the ca is still on. what happened??? also when i turn the wheel by hand, it feels weird like one of the magnets is re...
by fractal
Jun 14 2012 3:15pm
Forum: E-Bike Technical
Topic: pulse width modulation in controllers
Replies: 23
Views: 1696

Re: pulse width modulation in controllers

I'm asking this because I have a 100 volt bike, 24 fet controller, and 22 (outer diameter) inch wheels in a 9Kv(approx) cromotor/hubzilla. The thing is, my commute has some spots where i need to slow down because of traffic, pedestrians, bike paths. Can I damage my bike because of this? I would hate...
by fractal
Jun 14 2012 3:00pm
Forum: E-Bike Technical
Topic: pulse width modulation in controllers
Replies: 23
Views: 1696

Re: pulse width modulation in controllers

Ok thanks!!! Does this mean that going too slow for a certain setup creates resistance in the mosfets and it is tranfered to heat?
by fractal
Jun 14 2012 1:51pm
Forum: E-Bike Technical
Topic: pulse width modulation in controllers
Replies: 23
Views: 1696

pulse width modulation in controllers

i have a basic understanding of PWM in controllers, I read somewhere that if your controller is always in PWM, it is working too hard it will heat up fast. When is it not in PWM? How does it work?
by fractal
Jun 13 2012 11:30am
Forum: E-Bike Build Threads / Photos & Video
Topic: Fractal's Norco A-line build
Replies: 155
Views: 24433

Re: Fractal's Norco A-line build

I've been a bit concerned with the heat my controller was generating after each ride. After all, 40 amp current and 120 phase limit is pretty low. Well, after a bit of research and postings, turns out that these settings are causing the problem. The 120 phase is too high in relation to the 40 limit....
by fractal
Jun 12 2012 3:59pm
Forum: E-Bike Technical
Topic: how hot does your controller get?
Replies: 8
Views: 869

Re: how hot does your controller get?

they are the IRFB4115. Thanks John, all this technical stuff is starting to sink in my little head :mrgreen: Its all good! I love it!
by fractal
Jun 12 2012 3:01pm
Forum: E-Bike Technical
Topic: how hot does your controller get?
Replies: 8
Views: 869

Re: how hot does your controller get?

If go with 80 amps, and not ride wot all the time, it would still get hot?
by fractal
Jun 12 2012 11:49am
Forum: E-Bike Technical
Topic: how hot does your controller get?
Replies: 8
Views: 869

Re: how hot does your controller get?

Somebody was pointing out to me that the fact that i'm limiting current on such a high power setup can be the source of the problem. The cromotor/hubzilla demands a lot so the FETS have to work hard to limit the current and could be the source of the heat. Any opinions on this?
by fractal
Jun 11 2012 8:35pm
Forum: E-Bike Technical
Topic: how hot does your controller get?
Replies: 8
Views: 869

how hot does your controller get?

I've been running a Lyen 24 fet controller with with very conservative settings. 40 current and 120 phase. After an easy ride (2000 watts max and not faster than 45 kmh). the controller gets pretty hot. I can keep my hands on it, but if it were a bit hotter, i would not last a couple of seconds. Jus...
by fractal
Jun 11 2012 11:30am
Forum: E-Bike Technical
Topic: Throttle interface for sensitive high power setups
Replies: 224
Views: 28086

Re: Throttle interface for sensitive high power setups

Subscribed! That is an awesome idea. Its really hard to control at low speed. Especially near people and traffic, it can be a bit scary. Will follow this one closely! Thanks Zombiess!
by fractal
Jun 11 2012 9:04am
Forum: E-Bike Build Threads / Photos & Video
Topic: Fractal's Norco A-line build
Replies: 155
Views: 24433

Re: Fractal's Norco A-line build

MattyCiii wrote:
sn0wchyld wrote:you know what i'll say right?
lets see some vids!!
Called it!
:D
Yeah! as soon as I can :D
by fractal
Jun 09 2012 9:04pm
Forum: E-Bike Build Threads / Photos & Video
Topic: A-Lines Abound: First ride after some major changes
Replies: 349
Views: 74462

Re: A-Line's Abound: Gonna go tubeless on the front wheel

hey matt, what are the advantages of tubeless tires?
by fractal
Jun 09 2012 8:59pm
Forum: E-Bike Build Threads / Photos & Video
Topic: Fractal's Norco A-line build
Replies: 155
Views: 24433

Re: Fractal's Norco A-line build

went out for a test ride today. i decided to use conservative settings on the controller. current :40 phase : 120 speed : 70 kmh (in like 2 seconds, maybe 3) holy shit :shock: it pulls real hard! level of satisfaction : :twisted: when i put more current, this thing is going to be insane. the bike fe...
by fractal
Jun 07 2012 8:55pm
Forum: E-Bike Build Threads / Photos & Video
Topic: Fractal's Norco A-line build
Replies: 155
Views: 24433

Re: Fractal's Norco A-line build

Got those battery boxes done!!! I used thick ABS sheets and welded the whole thing together with that yellow cement (got a free buzz too :mrgreen: ). Its super strong, the cement creates a bond between the ABS parts. There is also an opening for wire clearance. check it out:
by fractal
Jun 06 2012 2:30pm
Forum: E-Bike General Discussion
Topic: Re: HT Norko Aline - version mid drive, adaptto+rv100pro
Replies: 166
Views: 37128

Re: HT Norko Aline - Finally with HD video + forced air/mx r

that totally sucks! I'm going to have to read a bit more on mid drives, I know nothing about them. Are you using the stock rear shock that came with the A-line (Fox DHX 3.0). What does it say on the spring? it should say : ... X 3.25. If it says 300 X 3.25, then maybe the coil is too soft????
by fractal
Jun 06 2012 9:13am
Forum: E-Bike Build Threads / Photos & Video
Topic: E-Solex upgrade
Replies: 138
Views: 16075

Re: Need your opinion e-solex / Hubzilla

Bonjour (du Québec)!!! In my opinion, these motors are maybe too powerful for a bike like this. Do you have pictures of the dropouts and swingarm of this bike? Looks like you would need extensive modifications to fit a big hub on this bike because of the exrta weight of the batts and motor. You woul...
by fractal
Jun 05 2012 9:41am
Forum: E-Bike Build Threads / Photos & Video
Topic: The F3: Dahon Jetstream suspension pivot maintenance
Replies: 182
Views: 46273

Re: "FU": The Folding Utility bike

Good work! I know nothing about RC drive, but I like it!!! That makerbot is certainly useful for making custom parts.
by fractal
Jun 02 2012 7:03am
Forum: E-Bike Build Threads / Photos & Video
Topic: Fractal's Norco A-line build
Replies: 155
Views: 24433

Re: Fractal's Norco A-line build

Totally sweet! Glad you're back Fractal, and that you've got two feet on that beast. At least it rolls now yes? Mine don't do that :( mine either!! :cry: :cry: looks nice frac! how much do those things weigh? I hope you've removed some meat on the other side... otherwise they'll be WEIGH stronger t...
by fractal
Jun 01 2012 7:58pm
Forum: E-Bike Build Threads / Photos & Video
Topic: Fractal's Norco A-line build
Replies: 155
Views: 24433

Re: Fractal's Norco A-line build TORQUE PLATES!

Hey guys!!! its been a while!!! I made good progress. I finally got the torque plates mounted!!! Wow, what an adventure that was. But they came out pretty good. They are made out of HRS (hot rolled steel). They will never break!!! I also got the lipo packs and a bulk charger from BMS battery. Its co...
by fractal
May 31 2012 9:26am
Forum: E-Bike Build Threads / Photos & Video
Topic: A-Lines Abound: First ride after some major changes
Replies: 349
Views: 74462

Re: A-Line's Abound: Soon able to move under pedal power...

Good work Matt!!! Love the wheels!!! As for me, its been awhile. I've been really busy with other stuff. I've made tons of progress. Will post pics this weekend. Did you bleed the brakes yourself? I have to shorten the hoses and rebleed them. I watched a couple of videos on youtube, dosent look too ...
by fractal
Apr 15 2012 7:20pm
Forum: E-Bike Build Threads / Photos & Video
Topic: A-Lines Abound: First ride after some major changes
Replies: 349
Views: 74462

Re: A-Line's Abound: Another A-Line build...

hey matt!!! great work!!! im very happy for you!!! they look great. mine will be ready next week. its been a challenge but seeing the results sure feels good.
by fractal
Mar 29 2012 8:05am
Forum: E-Bike Build Threads / Photos & Video
Topic: Adam's Norco A-Line 2009 with HS3540
Replies: 90
Views: 25194

Re: Adam's Norco A-Line 2009 with HS3540

brilliant!!! did you make the inserts a tight fit? are they pressed in? i called françois and i sent him my designs. seems like a nice guy. cant wait to hear back from him.
by fractal
Mar 28 2012 11:35am
Forum: E-Bike Build Threads / Photos & Video
Topic: Fractal's Norco A-line build
Replies: 155
Views: 24433

Re: Fractal's Norco A-line build

Nice work Fractal :) Pieces look great. What was the weight estimated by the software? I believe each pieces will be around 2 lbs ea. I don't know much about the Hot Rolled Steel, will rust be an issue? Thanks Adam, i'm not sure about the weight, i'll ask the engineer. Yes, if left untreated HRS ca...