Search found 168 matches

by Demosthenes
Sep 10 2013 9:28pm
Forum: Battery Technology
Topic: Opportunity charging of Headway 9Ah LifePo4 pack
Replies: 17
Views: 2049

Re: Opportunity charging of Headway 9Ah LifePo4 pack

I think the most nervous I've been about charging my battery in a public place was on a ferry, and I had no problems. My battery is a duct tape special too (no heat shrink, just duct tape) I think the biggest thing is don't leave it unattended, that is a baaaad idea. As long as you are right there t...
by Demosthenes
Nov 18 2012 9:46pm
Forum: Battery Technology
Topic: BMS Battery Alloy Shell Charger Problems
Replies: 597
Views: 51978

Re: BMS Battery Alloy Shell Charger Problems

So I may as well chip in my experiences. I got a 900W charger from BMSBattery, it went pop on plug in first time just like a lot of you folks. Opened it up, no apparent damage, no idea what was up. Talked with BMSBattery, they shipped me a replacement, so they handled it pretty well but really, they...
by Demosthenes
Nov 13 2011 3:57am
Forum: E-Bike General Discussion
Topic: LiPo ... why the hate?!
Replies: 31
Views: 2494

Re: LiPo ... why the hate?!

Well 500+ Whr's of lipo is way more potential energy than a couple watt hour cell phone batteries. There is more energy in a laptop battery, but still nowhere near ebike amounts. Just saying. Myself, I don't have a garage or anywhere to charge that's not carpeted or surrounded with flammable stuff. ...
by Demosthenes
Oct 26 2011 3:25pm
Forum: General Discussion
Topic: Ypedal T-shirts
Replies: 56
Views: 3708

Re: Ypedal T-shirts

Make a bike with Y shaped pedals. Nobody will get it though :P
by Demosthenes
Oct 05 2011 8:30pm
Forum: E-Bike General Discussion
Topic: Kona MinUte
Replies: 11
Views: 1688

Re: Kona MinUte

I like it. Seems like a good alternative to the xtracycle. Slightly less hauling capacity but much easier to store and stuff. I can't fit an xtracycle in my basement, but I could fit this. One site you linked quoted 100lbs capacity, but Kona's site quotes 300.... Big difference. Also, if it's 300, y...
by Demosthenes
Sep 27 2011 7:53pm
Forum: E-Bike General Discussion
Topic: What would thief try first with your ebike?
Replies: 18
Views: 1379

Re: What would thief try first with your ebike?

liveforphysics wrote: Even little girls gotta learn sometime. ;-)

Not everything in the world is harmless to touch. ;-)
You do realize that this quote plus the pedobear shirt you were wearing..... :twisted:
by Demosthenes
Sep 24 2011 3:23am
Forum: Battery Technology
Topic: Why pay big bucks for batteries?
Replies: 49
Views: 4575

Re: Why pay big bucks for batteries?

I will point out one disadvantage for Lithium, you'll probably want a BMS on there, it would be a pain in the ass to manually balance cells that large, no RC charger would do that fast enough, especially with a large imbalance, plus you need the LVC (Unless you're very very very very careful!). Whic...
by Demosthenes
Sep 12 2011 8:59pm
Forum: E-Bike General Discussion
Topic: 100 Mile Club
Replies: 49
Views: 5267

Re: 100 Mile Club

If you are allowed to count charging stops then I am in. Rode from Vancouver to Manning Park. Took 17 hours getting there and 11 back, The majority of that being charge time. Was 220km each way. CA trip data was accidentally reset on the way there but I've got data for the trip back. 7hrs 40m 06s (R...
by Demosthenes
Sep 09 2011 5:06pm
Forum: Battery Technology
Topic: Thread for new battery breakthrough PR releases
Replies: 1625
Views: 193008

Re: Titanium lihium battery research hype

http://en.wikipedia.org/wiki/Lithium-titanate_battery

Apparently they are heavy. But the charge times are amazing and I remember hearing they have really long cycle lifes. I don't think they will catch on.
by Demosthenes
Aug 28 2011 12:49pm
Forum: E-Bike General Discussion
Topic: How to deterimine if a battery is OK to use
Replies: 4
Views: 515

Re: How to deterimine if a battery is OK to use

You need to have a controller rated for the voltage. And a battery rated for the current draw of the controller. Your scooter battery could handle the ezee controller current draw easily. But sadly when fully charged it will be well over the voltage rating of the capacitors in the controller. The ez...
by Demosthenes
Aug 28 2011 1:05am
Forum: E-Bike Technical
Topic: Found adjustable CCCV charger
Replies: 59
Views: 6289

Re: Found adjustable CCCV charger

Anybody know what the switch on the 900W version does? There is a power switch on the back that's obvious but the switch on the front I'm not sure what it does. All I know is I managed to stupidly break it while opening the case to find the pots. I didn't even get a chance to turn it on for the firs...
by Demosthenes
Aug 27 2011 11:58pm
Forum: Battery Technology
Topic: Can I get opinions on this charger?
Replies: 6
Views: 750

Re: Can I get opinions on this charger?

I use that exact charger myself except the 48V version. I don't have a signalab bms though. The charger quality has been good so far. But it's a bit odd. It says the voltage goes up to 59.2 but then I've monitored it during charging and it hits the constant voltage at 57.2 and then shuts off. Then a...
by Demosthenes
Aug 22 2011 4:28pm
Forum: E-Bike General Discussion
Topic: Hub motor hydraulic caliper clearance
Replies: 28
Views: 5967

Re: Hub motor hydraulic caliper clearance

I don't know about hydro either, but my Hayes MX-4 mechanical fit tight but close. You can also grind off part of the holder for the pad fairly easily if it doesn't clear. This is on a new style nine continent.
by Demosthenes
Aug 16 2011 7:27pm
Forum: Battery Technology
Topic: Adjusting King Power chargers
Replies: 97
Views: 14804

Re: Adjusting King Power chargers

Didn't even think to check the weight. Thanks mate. I guess it was just wishful thinking on my part :P
by Demosthenes
Aug 16 2011 1:51pm
Forum: E-Bike General Discussion
Topic: Add this to your electric bike
Replies: 54
Views: 4204

Re: Add this to your electric bike

I see a company going out of business in the future. However who's willing to buy one and test the ludicrous claims? I would love to see a side by side comparison with pretty much any electric bike.
by Demosthenes
Aug 16 2011 1:42pm
Forum: Battery Technology
Topic: Adjusting King Power chargers
Replies: 97
Views: 14804

Re: Adjusting King Power chargers

I notice that on bmsbattery the picture for the 900W and say the 1200W are the same casing at least. So theoretically the 1200W version is just a 900W with the current limit turned up? I mean correct me if I'm wrong but I would think the main power limit for these things (so long as the voltage does...
by Demosthenes
Aug 14 2011 3:45pm
Forum: E-Bike Technical
Topic: Belt Drives; Better for E-bikes? Gates has one.
Replies: 38
Views: 3834

Re: Belt Drives; Better for E-bikes? Gates has one.

Here is a quote from Sheldon Brown's website. An opinion I certainly trust. In some fields, experts aren't really. If SB is so cool, where are his e-bike comments? Isn't this a major development with bikes? Well unfortunately he did pass away about three years ago. Admittedly his opinions aren't en...
by Demosthenes
Aug 13 2011 8:33pm
Forum: E-Bike Technical
Topic: Found adjustable CCCV charger
Replies: 59
Views: 6289

Re: Found adjustable CCCV charger

That's an appealing charger, mostly because of the appealing price. $70 for the 600W version which they say can do up to 144. I would love to try one of these, but I'm hesitant... It seems like there has to be a catch to me. Very curious as to what the other trimmers are for. If they are adjustable ...
by Demosthenes
Aug 13 2011 8:21pm
Forum: E-Bike Technical
Topic: Belt Drives; Better for E-bikes? Gates has one.
Replies: 38
Views: 3834

Re: Belt Drives; Better for E-bikes? Gates has one.

For an ebike that is not being pedaled they would work fantastic. But I disagree that pedals are merely a contingency measure. I myself pedal all the time. Here is a quote from Sheldon Brown's website. An opinion I certainly trust. "From time to time toothed belts are proposed as an alternative to c...
by Demosthenes
Aug 12 2011 8:01pm
Forum: E-Bike General Discussion
Topic: Rayben motors - any reviews?
Replies: 12
Views: 2800

Re: Rayben motors - any reviews?

Sadly you are not alone, I had very similar issues with Rayben but with motor problems rather than battery. I was consistently given the very same reason why it must be my fault. "All of our other customers have not had problems" If you need someone to support you if it gets to legal proceedings I w...
by Demosthenes
Jan 13 2011 11:03pm
Forum: E-Bike General Discussion
Topic: Katherine's E-bike!
Replies: 45
Views: 4286

Re: Katherine's E-bike!

I'm so sorry, it wasn't my intention to get her hooked! (Hehehehe :twisted: ) Beautiful build! But I wouldn't expect anything less from you. :D
by Demosthenes
Nov 22 2010 7:08pm
Forum: E-Bike General Discussion
Topic: Dear Santa: ebiker Xmas Wish List
Replies: 4
Views: 921

Re: Dear Santa: ebiker Xmas Wish List

That's pretty neato. Now I am going to copy it :P I think I even have enough spare silver lying around (from back when it was 60cents a gram, not 1.45 like now, scary thing is that was only 4-5 years ago!) Now what to use for my design.... :mrgreen:
by Demosthenes
Oct 16 2010 1:45pm
Forum: E-Bike General Discussion
Topic: Torque
Replies: 8
Views: 919

Re: Torque

Never could controll my right hand either. I had to give up motorcycles for about 20 years while my right hand got some maturity and common sense. That cracked me up. So when did it finally get around to moving out of it's parents basement? :lol: When it's raining (So pretty much all the time at th...
by Demosthenes
Oct 14 2010 2:24am
Forum: E-Bike General Discussion
Topic: Bike selection for ebike kit.
Replies: 11
Views: 955

Re: Bike selection for ebike kit.

If your speed limiting it anyways, why go with the 06? Go with the slower wound 07. As far as legality, technically you are limited to both 32km/hr and maximum 500 watts. However 500 is pretty pathetic. Will barely climb hills. So long as you stick to the speed limit part though, no cop will be able...