Search found 583 matches

by pdf
Oct 03 2013 1:14pm
Forum: Battery Technology
Topic: Horrible quality of SmartBMS from bmsbattery.com
Replies: 53
Views: 6508

Re: Horrible quality of SmartBMS from bmsbattery.com

Wow. That is worse than my soldering. What the heck?
by pdf
Oct 03 2013 9:36am
Forum: Battery Technology
Topic: RC Lipo pack inspection, series/parallel charging, and lifespan/safety tips
Replies: 172
Views: 83523

Re: RC Lipo series charging tutorial

It is somewhat frustrating to me that these batteries can be made very reliable and safe for use in phones, laptops, tablets etc., but nobody has bothered to make a self-contained light EV battery system with comparable performance, reliability and safety-- even though the risks and consequences of...
by pdf
Oct 02 2013 10:49am
Forum: E-Bike Build Threads / Photos & Video
Topic: bigger battery enclosure
Replies: 21
Views: 1635

Re: bigger battery enclosure

for me, it was good for a laugh. My name is mud. I'll do better, I promise. Actually, it might not be completely worthless. If you have a large battery, say, in the two halves of a pair of top tube saddle bags, it would put your feet further outboard and might keep your knees from rubbing the batte...
by pdf
Oct 02 2013 10:01am
Forum: Battery Technology
Topic: slow balancing with Bestech BMS
Replies: 21
Views: 2559

Re: slow balancing with Bestech BMS

People have already pointed out that the BMS balances not by increasing charge rate to weak cells but by bleeding down the high ones. The resistors that do this are small and can only absorb so much power so it might take a while. It would be interesting to log the individual cell voltages as you ar...
by pdf
Oct 01 2013 12:50pm
Forum: E-Vehicles General Discussion
Topic: Rough rider NOT wanted
Replies: 15
Views: 1848

Re: Rough rider NOT wanted

So how did you solve the rack issue? Etc... I haven't solved it yet. So far my solution is not to put anything heavy on the rack. I only use this bike for commuting. I still have my Xtracycle for load carrying. I only need a laptop pretty much at work, so I carry it in a bag over my shoulder. Your ...
by pdf
Sep 30 2013 9:03am
Forum: E-Vehicles General Discussion
Topic: Rough rider NOT wanted
Replies: 15
Views: 1848

Re: Rough rider NOT wanted

To close the loop on this thread, I eventually got a used Dakar FS bike. The improvement was amazing. However I was still arriving at work with sore tailbones. I finally switched the seat on the Dakar with the larger more cushy seat from my Jamis Commuter as a test and voila', problem solved. I expe...
by pdf
Sep 30 2013 8:49am
Forum: E-Bike Technical
Topic: CroMotor2 not rotating easily after tightening the screw nut
Replies: 3
Views: 449

Re: CroMotor2 not rotating easily after tightening the screw

Based on some work with students building ebikes, their problem is frequently that the freewheel is too large for the hubmotor and is hitting the frame at the dropouts. Make sure the washer (or washers) you are using on the freewheel side is/are small enough to sit inside the freewheel. There is no ...
by pdf
Sep 30 2013 8:42am
Forum: E-Bike General Discussion
Topic: Single-speed e-bike?
Replies: 36
Views: 8591

Re: Single-speed e-bike?

I went with a SS on my first eBike and I have a CST Bafang. I am very happy with the setup. I try to get myself to pedal on starts and up hills, but I usually just floor both throttles and sit there. I don't want gears unless I go with a mid-drive. Beautiful bike (removed images to save space in po...
by pdf
Sep 27 2013 3:28pm
Forum: E-Bike Technical
Topic: Lipo Double Harness for Charging and Power
Replies: 13
Views: 1159

Re: Lipo Double Harness for Charging and Power

NeilP wrote:any idea of any place that sells their stuff?

i looked at their site, but can't see any buy/ checkout links


http://www.bestekpower.com/74v20spcmbms ... tterypack/
Send them an email and tell them what you want and they will send a quote.
by pdf
Sep 27 2013 11:44am
Forum: E-Bike General Discussion
Topic: Building from components
Replies: 27
Views: 1211

Re: Building from components

You need to define "big" in "big hill". A long 8% grade is a "big hill" for a pedaler but not for an ebike. I have one every day and it is no problem for my hub bike. However, a 15% grade is starting to get serious for an ebike. If you have to do long trips at 15+% grades, perhaps low (gear) and sl...
by pdf
Sep 27 2013 8:47am
Forum: E-Bike General Discussion
Topic: Building from components
Replies: 27
Views: 1211

Re: Building from components

You need to define "big" in "big hill". A long 8% grade is a "big hill" for a pedaler but not for an ebike. I have one every day and it is no problem for my hub bike. However, a 15% grade is starting to get serious for an ebike. If you have to do long trips at 15+% grades, perhaps low (gear) and slo...
by pdf
Sep 26 2013 2:40pm
Forum: General Discussion
Topic: How Strange of a House would You Like to Live in?
Replies: 4
Views: 516

Re: How Strange of a House would You Like to Live in?

I could live in a waterproof cardboard box. I don't care a fig about a house. My wife, however, does. We built a vacation home and it took forever and was a lot of very hard work. Hope I never do that again. My dream house would be anything, but with a 45 foot sailboat in front of it. I'd be on the ...
by pdf
Sep 26 2013 12:49pm
Forum: Items for Sale - New
Topic: UPDATED 04/10/15- NEW HPC REVOLUTION DH E-BIKE!
Replies: 152
Views: 38404

Re: Sneak Peak at the NEW HPC REVOLUTION DH E-BIKE!

What batter(ies) are you going to put in it? That is, what type/whose cells and how configured?
by pdf
Sep 26 2013 12:45pm
Forum: General Discussion
Topic: Damn Thieves!!! - They came back AGAIN!
Replies: 48
Views: 3293

Re: Damn Thieves!!!

When I see someone lurking around people's homes in the neighborhood, I walk within about 20 feet and take a picture. I then smile and walk off. Usually it is a salesperson or someone soliciting for magazine sales but you never know. I figure if anything goes missing, I'll have a photo for the cops ...
by pdf
Sep 26 2013 9:54am
Forum: E-Bike General Discussion
Topic: ebike insurance
Replies: 118
Views: 4954

Re: Bicycle Insurance

Temporarily take the cranks and bottom bracket out of the frame. Rig up some kind of pegs temporarily and try to get it registered as an electric motorcycle lol. I understand this was a "lol" but a good place to comment. The reality is that when you try to get something registered with the DMV (dep...
by pdf
Sep 26 2013 9:46am
Forum: Items for Sale - New
Topic: UPDATED 04/10/15- NEW HPC REVOLUTION DH E-BIKE!
Replies: 152
Views: 38404

Re: Sneak Peak at the NEW HPC REVOLUTION DH E-BIKE!

migueralliart wrote:
oatnet wrote:
snellemin wrote:Cool looking. What about just selling the frame for the DIY peeps?
+1
+2
+3
by pdf
Sep 26 2013 9:45am
Forum: General Discussion
Topic: Endless power?
Replies: 21
Views: 2296

Re: Endless power?

Hwy89 wrote:This idea keeps popping up, it's a perpetual notion.
Bam! Good one.
by pdf
Sep 25 2013 12:38pm
Forum: E-Bike General Discussion
Topic: Sun-Thing28 Ebike Kit Build
Replies: 44
Views: 6015

Re: Sun-Thing28 Ebike Kit Build

You need a freewheel removal tool with a large enough opening.
http://www.ebikes.ca/store/photos/FWTool.jpg

or you can drill a big hole in one without it.
Most people just buy a freewheel if there isn't one on the motor. They can be a bear to get off.
by pdf
Sep 25 2013 12:02pm
Forum: Alternative Energy
Topic: Charger from hub motor
Replies: 18
Views: 1811

Re: Charger from hub motor

Yes thank you I wanted to say "brake". So the discussion want to another place as brakes now and i have some other answers now A. The Cyclone motors does this work with 100A kelly. But i wanted to say that i want a more hard brake in my front wheel because pads are melting. I have tested 3 brakes. ...
by pdf
Sep 23 2013 1:58pm
Forum: E-Bike Build Threads / Photos & Video
Topic: My Cromotor E-Bike Build -> more like a moped
Replies: 298
Views: 60987

Re: My Cromotor E-Bike Build -> more like a moped

Wow. Can we see the battery "under the hood"?
by pdf
Sep 23 2013 8:35am
Forum: General Discussion
Topic: Political credit for ebike CO² emissions impact?
Replies: 7
Views: 522

Re: Political credit for ebike CO² emissions impact?

I'm not worried about global warming or climate change. It's going to happen with or without our help. My concern is pollution. I don't care if the earth gets warmer and NYC floods in a hundred years. What concerns me is mercury in the water, and chemicals that cause cancer. Carbon is carbon. It's ...
by pdf
Sep 20 2013 11:28am
Forum: E-Bike Technical
Topic: How hard is the Cycle Analyst to figure out?
Replies: 10
Views: 1078

Re: How hard is the Cycle Analyst to figure out?

The three main pieces of information you need to put in accurately are the tire size, no. magnets, and the shunt resistance value in the controller. Get the lsta two values from the vendor (or for the no. of magnets, post your motor here and someone will know) but as far as the tire size, you can ju...
by pdf
Sep 20 2013 9:06am
Forum: Alternative Energy
Topic: Charger from hub motor
Replies: 18
Views: 1811

Re: Charger from hub motor

I don't think I completely understand but if you are already using the mid-drive with regen, adding another motor as a generator will not add anything as far as I can tell. The "free energy" you will be creating with the second motor will be taken from the regen that the middrive that is already cre...
by pdf
Sep 20 2013 8:54am
Forum: Battery Technology
Topic: Recovering a dead cell
Replies: 7
Views: 731

Re: Recovering a dead cell

The PCM should have kept the cell from going dead so I'd be curious about that (bad PCM or bad cell maybe). If the voltage is truly 0, it is finished for sure. Even if you manage to charge it, at best, the capacity will be very much reduced. All I can say about the dangers of trying to resurrect a d...