Search found 20 matches

by willfcc
Sep 06 2011 8:54am
Forum: E-Bike Technical
Topic: Serious all-weather electric vehicle - wheels
Replies: 11
Views: 1262

Re: Serious all-weather electric vehicle - wheels

Your project sounds much like the BugE. I like Mark's concept a lot, and it's on my short list of viable commuters. I'd like to see one with a little better weather protection built in storage, instead of strapping a back pack to the seat.
by willfcc
Apr 16 2011 9:28am
Forum: E-Bike General Discussion
Topic: California 20mph ebike vs 30mph moped alternative pros & con
Replies: 21
Views: 2327

Re: California 20mph ebike vs 30mph moped alternative pros &

Check equipment requirements, too. Most times you'll find a moped will be required to have headlights, tail lights, brake-activated stop light, turn signals, DOT rated tires and a Vehicle Identification Number.
by willfcc
Mar 26 2011 9:07pm
Forum: E-Bike Technical
Topic: Troubleshooting help
Replies: 1
Views: 260

Re: Troubleshooting help

More info... I hooked up my SLA pack, and the motor works! Why would it work on SLA, but not lipo? SLA pack is at 51.5v, lipo is 41.4. Oh crap. There it is right there... For the SLA pack at 48v, I set the CA low volt cutoff to 44. My lipo pack is only 41.5. Resetting the CA to 38v cutoff made it wo...
by willfcc
Mar 26 2011 8:28pm
Forum: E-Bike Technical
Topic: Troubleshooting help
Replies: 1
Views: 260

Troubleshooting help

I have an ebikes.ca 2805 front hub motor that won't go. It worked fine in the fall, when I was using SLA. I hooked up lipo for the first time, and the motor doesn't work. The cycle analyst says I have 41.4 volts. I opened the controller, and measured the hall signals and throttle signal. They appear...
by willfcc
Mar 06 2011 12:39am
Forum: E-Bike Technical
Topic: Ready to cycle batteries, but have questions
Replies: 4
Views: 434

Re: Ready to cycle batteries, but have questions

Hmmm. Yet another reading of the manual, and I see that the charger is rated for about 1C charge with lipo. So, it looks like I should go with 5 amps...
by willfcc
Mar 06 2011 12:26am
Forum: E-Bike Technical
Topic: Ready to cycle batteries, but have questions
Replies: 4
Views: 434

Ready to cycle batteries, but have questions

Am I doing this right? I've got my lipo, and I want to do a few cycles before I build my pack - 10s2p Turnigy 5000mah 20C. I'm using a 1010B+, and will have two packs in series with balance leads attached to the charger. I've set the termination voltage at 4.15. These cells are rated at 2C charge, s...
by willfcc
Feb 28 2011 12:29pm
Forum: E-Bike Technical
Topic: Will this work for pre-charge?
Replies: 2
Views: 367

Will this work for pre-charge?

I've read most of the threads on pre-charge, and I don't recall seeing anyone putting the pre-charge resistor in the battery case. Could this work?
Pre-charge.jpg
Pre-charge.jpg (15.95 KiB) Viewed 237 times
This should also work when attaching the charger?
by willfcc
Feb 26 2011 12:35am
Forum: E-Bike Technical
Topic: Feedback on my noob setup
Replies: 8
Views: 832

Re: Feedback on my noob setup

Thought more about all your comments, and came up with a new set-up that permanently parallels the the discharge and balance leads with harnesses, but still allows easy separation for pack replacement or troubleshooting. Now, no unplugging to charge. The balance harness is split into 3x four connect...
by willfcc
Feb 25 2011 12:17am
Forum: E-Bike Technical
Topic: Feedback on my noob setup
Replies: 8
Views: 832

Re: Feedback on my noob setup

Andje, I used MS Visio for the diagrams. It's on my work computer. At home, I use OpenOffice Draw. If you google Visio freeware, you'll find many free programs that can do these diagrams. I'm setting up this way so I can balance at the cell level, not paralleled cells. I agree, it's a lot of pluggin...
by willfcc
Feb 24 2011 12:00am
Forum: E-Bike Technical
Topic: Feedback on my noob setup
Replies: 8
Views: 832

Re: Feedback on my noob setup

Yikes!! Just realized that my charging diagram has a major error. The two negative leads at the balance taps SHOULD NOT be paralleled. Since the packs are in series for charging, that makes the 5 tap on the upper pack electrically the same as the negative tap on the lower pack. My original diagram w...
by willfcc
Feb 22 2011 12:10am
Forum: E-Bike Technical
Topic: Feedback on my noob setup
Replies: 8
Views: 832

Feedback on my noob setup

I'll be running four 5000mah 5S packs in 10S2P for 37v 10ah. Upper and lower packs are paralleled at discharge and balance leads with Andersons in custom harnesses. Schematic-Discharging.JPG For charging, using 1010B, the parallel harness is removed from the discharge leads, and the charger connecti...
by willfcc
Oct 15 2010 1:00am
Forum: E-vents
Topic: Portland, OR: Meet and Greet...
Replies: 71
Views: 12366

Re: Portland, OR: Meet and Greet...

18+ miles from Gresham. Maybe as more folks chime in, we can determine a central location?
by willfcc
Sep 10 2010 12:14am
Forum: E-Bike General Discussion
Topic: Oregon E-Bike Law, does anyone have the ORS where ....
Replies: 18
Views: 1525

Re: Oregon E-Bike Law, does anyone have the ORS where ....

Should be plenty of room at Home Depot, and easy access to the bike trail.
by willfcc
Sep 08 2010 12:18am
Forum: E-Bike General Discussion
Topic: 9C came alive on 48 volts!
Replies: 20
Views: 2021

Re: 9C came alive on 48 volts!

@dogman: Good point, I didn't think about the speed REDUCTION going from 48 to 44.4. You could just use a 2x charger and charge the parallel packs as a 10ah battery. Much easier to hook up and charge and also prevent series/parallel mixups when reconnecting. Always treat the pack as two batteries, i...
by willfcc
Sep 07 2010 1:09pm
Forum: E-Bike General Discussion
Topic: 9C came alive on 48 volts!
Replies: 20
Views: 2021

Re: 9C came alive on 48 volts!

The extra battery will get you more range but only if you can keep the speed down :D That will be really hard to do. Upping the speed will use more wh so if you use all that speed you may actually have less range. IF you have good self control it should improve a little. 9c on 48v is just too damn ...
by willfcc
Sep 07 2010 10:23am
Forum: E-Bike General Discussion
Topic: 9C came alive on 48 volts!
Replies: 20
Views: 2021

Re: 9C came alive on 48 volts!

@jmygann: Haven't ridden the same route on 48v, yet. Hopefully this coming Saturday. @veloman: Hub is DD. Probably made more stops than you. Perhaps I should count them? @Eujangles: About 60% useable capacity is what I expected. Going from 48v14ah lead to 44v10ah lipo might lose about 10% range (if ...
by willfcc
Sep 06 2010 11:36pm
Forum: E-Bike General Discussion
Topic: 9C came alive on 48 volts!
Replies: 20
Views: 2021

9C came alive on 48 volts!

A few months ago, I bought a 2805 9C in 20" wheel kit from Grin Technology, and mounted it on my recumbent bike. Being my first foray into e-bikes, I wanted to start with SLA to keep the cost down. So, I bought three 12v14ah batteries and went riding! On 36 volts, the bike maxed out at 22mph. The le...
by willfcc
Apr 27 2010 11:30pm
Forum: E-Bike General Discussion
Topic: Advice on first ebike purchase and going forward
Replies: 7
Views: 666

Re: Advice on first ebike purchase and going forward

Thanks for the welcome and the opinions. I'd like to commute, but biking distance is about 28 miles, with an 800 ft climb from mile 22-26. I think I'd need TWO 48v20ah lifepo packs to do that. Cost benefit at $3/gal for gas would take over 300 commutes to re-coup just the cost of the batteries. Plus...
by willfcc
Apr 27 2010 10:22am
Forum: E-Bike General Discussion
Topic: Advice on first ebike purchase and going forward
Replies: 7
Views: 666

Advice on first ebike purchase and going forward

I've been scouring the forums for a few weeks, and am ready to buy my first ebike kit. Hopefully, you all can offer some advice on my plan. I'd like to start with the WE BL36 kit from bernsonev.com. Price point is an issue, and I plan on getting the kit, along with a fourth 12v12ah SLA battery, 48v ...