Search found 1496 matches

by bowlofsalad
Feb 15 2013 1:37pm
Forum: General Discussion
Topic: Studdless Snow/Ice tires: Continental Topcontact Winter 2
Replies: 11
Views: 1888

Re: Studdless Snow/Ice tires: Continental Topcontact Winter

“RUD gets you there” :lol: Actually that’s pretty clever. The only worry is having a segment break off and become a projectile. Ever read about retractable-stud snow tires ? Lots of publicity in 2008 – though difficult to find more info on it. Seemed like a good idea. ~ KF "The problem is, some nor...
by bowlofsalad
Feb 14 2013 11:37pm
Forum: Battery Technology
Topic: high voltage alarm?
Replies: 15
Views: 991

Re: high voltage alarm?

Well, one of these http://www.jaycar.com.au/productView.asp?ID=SY4047 would do the job nicely. If you needed the full 30A charge current, you would have to use it with the transistor of the cell-log in normally closed mode (since the NO contacts of the relay are rated for 30A, and NC are rated for ...
by bowlofsalad
Feb 14 2013 5:32pm
Forum: Battery Technology
Topic: Am I "KILLING" my Ping battery pack?
Replies: 26
Views: 2107

Re: Am I "KILLING" my Ping battery pack?

Cyclebutt wrote:While we're at it, would hooking up the 2nd battery pack (parallel, natch) cause any undue harm to the controller?
I seriously doubt it.
by bowlofsalad
Feb 14 2013 5:02pm
Forum: Battery Technology
Topic: A123 AMP20M1HD-A Battery pack kit
Replies: 712
Views: 108976

Re: A123 AMP20M1HD-A Battery pack kit

I've been searching around but it seems hard to find a source for cells for this pack/kit. I am afraid to buy from OSN or victpower, is there a place or two that is reliable?
by bowlofsalad
Feb 14 2013 12:48pm
Forum: Battery Technology
Topic: BMS Battery Alloy Shell Charger Problems
Replies: 597
Views: 51914

Re: BMS Battery Alloy Shell Charger Problems

Also, just cuz it "looks" thick or feels heavy, doesn't mean it's good wire. I've run across cords that used STEEL CABLE in them instead of copper, especialy for large-gauge stuff like jumper cables. :roll: It could also just be dense rubbery plastic that's very thick on the outside, and still use ...
by bowlofsalad
Feb 14 2013 12:17pm
Forum: E-Bike General Discussion
Topic: Geared vs direct drive effeciency
Replies: 38
Views: 2374

Re: Geared vs direct drive effeciency

Use cash you'd take to vegas and blow, if you plan on 2000w into smaller gearmotors. Even the larger ones like the BMC or MAC, 2000w better be for short intervals. Using 2000w and efficiency in the same sentence is a bit amusing. But along the lines of "it depends" a very large motor can run very e...
by bowlofsalad
Feb 14 2013 1:53am
Forum: Battery Technology
Topic: Best BMS or a list of best BMS?
Replies: 46
Views: 3977

Re: Best BMS or a list of best BMS?

I have an iCharger 208B for my cellman built A123 battery coupled witha cellog on the bike and the inbuilt low volt indicator on the throttle with no problems. No problem with going to sleep. The charge finish/time out alarm will wake the dead!!! atually I have replaced the cellog with a BVM-8s whi...
by bowlofsalad
Feb 13 2013 7:55pm
Forum: Battery Technology
Topic: Looking for the best battery for my ebike.
Replies: 70
Views: 5753

Re: Looking for the best battery for my ebike.

Sorry if this offends, but how would anyone know this? The real question likely relates to the strength or quality of the bonds/welds on the batteries. I don't really know how you'd determine this idea though, you certainly cannot just by looking at it or touching it. I think your best bet is, if y...
by bowlofsalad
Feb 13 2013 5:01pm
Forum: Battery Technology
Topic: Looking for the best battery for my ebike.
Replies: 70
Views: 5753

Re: Looking for the best battery for my ebike.

I just received the battery about three weeks ago and have put just a few cycles on it. I monitor AH used with a Wattmeter - I have commuted to work about 5 times on the bike and used just under 4AH each way for a 5 mile (each way) commute. (I charge at work) The largest usage was about 9.5AH for a...
by bowlofsalad
Feb 13 2013 4:05pm
Forum: E-Bike General Discussion
Topic: Geared vs direct drive effeciency
Replies: 38
Views: 2374

Re: Geared vs direct drive effeciency

Hah, I figured others have asked this question, I always do lots of searching, but more often than not, I am using the wrong terms for searches. There seems to be plenty of different perspectives and opinions on this matter. At least, many things to consider between the two. It's hard to know which ...
by bowlofsalad
Feb 13 2013 3:56pm
Forum: Battery Technology
Topic: Best BMS or a list of best BMS?
Replies: 46
Views: 3977

Re: Best BMS or a list of best BMS?

On a Cellman build battery you use his charger that matches his BMS. Docnjoj has a home build and never drains the battery to find the bottom. I never use the total battery as it will unbalance more as you hit lvc. Yes, that is an option, to just use the BMS included with the included charger. But ...
by bowlofsalad
Feb 13 2013 2:28pm
Forum: Battery Technology
Topic: Looking for the best battery for my ebike.
Replies: 70
Views: 5753

Re: Looking for the best battery for my ebike.

If you can fit it in the case and don't mind the weight then go for the 20-25ah. I second the sun thing recommendation - have his 48v15ah and great value for the price. The 48v15ah just fits in my triangle however and I have a good sized frame - the pack size may be less flexible with pouch cells v...
by bowlofsalad
Feb 13 2013 3:06am
Forum: E-Bike General Discussion
Topic: Geared vs direct drive effeciency
Replies: 38
Views: 2374

Geared vs direct drive effeciency

Hello, Sorry if this is posted in the wrong place. I've been shopping around for various kits. http://www.e-bikekit.com/ebike-kits/electric-bike-motor I came across this page claiming that the geared hub is 15%-25% more efficient than direct drive. I understand that this could be marketing, so I tho...
by bowlofsalad
Feb 13 2013 2:47am
Forum: Battery Technology
Topic: osnpower battery 48v 20ah review
Replies: 110
Views: 8445

Re: osnpower battery 48v 20ah review

ROG130 wrote:hi 999zip999
thay are the same size as usa calls the only part i had different was the bms moved from top of pack to one end of the pack
Did you ever talk to them about the korean cells instead of USA?

Have you used them? Any thoughts on their performance?
by bowlofsalad
Feb 13 2013 2:17am
Forum: Battery Technology
Topic: Best BMS or a list of best BMS?
Replies: 46
Views: 3977

Re: Best BMS or a list of best BMS?

The best BMS is no BMS. :lol: RC balance chargers and LVC on the controller. Done. No fail. No problems. Ok ok, this is not benefiting the thread, but I just had to post it. :D It sounds benefiting to me. RC balance chargers? That seems interesting at least. I know nothing on that front, do you hav...
by bowlofsalad
Feb 12 2013 11:44pm
Forum: Battery Technology
Topic: Am I "KILLING" my Ping battery pack?
Replies: 26
Views: 2107

Re: Am I "KILLING" my Ping battery pack?

There are many variables and possibilities here. As far as I know, lifepo4 batteries don't like heat. Something that can cause a battery to get very warm is drawing past what it's rated for. I don't know anything about your setup, but this will answer that anyway. The smaller the battery, the smalle...
by bowlofsalad
Feb 12 2013 11:30pm
Forum: Battery Technology
Topic: Best BMS or a list of best BMS?
Replies: 46
Views: 3977

Re: Best BMS or a list of best BMS?

I read http://endless-sphere.com/forums/viewtopic.php?f=3&t=26383&hilit=Home+made+battery+packs&start=495 this entire thread. I don't think I am going to be making a pack out of old laptop batteries, haha! However, I did see someone made that a123 pack, and at least now I understand what things like...
by bowlofsalad
Feb 12 2013 2:15am
Forum: E-Vehicles General Discussion
Topic: 36v 30ah vs 48v 20ah for range
Replies: 22
Views: 3528

Re: 36v 30ah vs 48v 20ah for range

When I was first shopping for my components I ran some figures in my head on how much range I could squeeze out if I took it easy and went a certain speed during certain conditions. Yeah, that all went out the window when I rode it for the first time. Now the faster the better. I can't lie. :twiste...
by bowlofsalad
Feb 10 2013 7:39pm
Forum: Battery Technology
Topic: Best BMS or a list of best BMS?
Replies: 46
Views: 3977

Re: Best BMS or a list of best BMS?

You're welcome. A123 IS LiFePO4. Just a much better version of LiFePO4. A123 is a real company (though now bankrupted) with real technology, real production falicity, real quality control. But from the users' point of view, here are what matter: Much much higher rate of discharge and supposedly muc...
by bowlofsalad
Feb 10 2013 7:06pm
Forum: Battery Technology
Topic: Best BMS or a list of best BMS?
Replies: 46
Views: 3977

Re: Best BMS or a list of best BMS?

Thanks for the response sam. I found the thread, http://endless-sphere.com/forums/viewtopic.php?f=3&t=26383&hilit=Home+made+battery+packs&start=495 I'll be sure to look it over, looks interesting at a glance. What makes a123 so much better than lifepo4? I am really a newbie, maybe you could spell it...
by bowlofsalad
Feb 10 2013 7:01pm
Forum: Battery Technology
Topic: Best BMS or a list of best BMS?
Replies: 46
Views: 3977

What BMS style do you use?

There seems to be conflict on what is better, what do the will the polls tell us?

For your time, I offer you this silly little tune. https://www.youtube.com/watch?v=sJQYoGyEtDs :D
by bowlofsalad
Feb 10 2013 4:55pm
Forum: Battery Technology
Topic: Best BMS or a list of best BMS?
Replies: 46
Views: 3977

Re: Best BMS or a list of best BMS?

Thanks for the suggestion.
by bowlofsalad
Feb 10 2013 4:32pm
Forum: Battery Technology
Topic: Best BMS or a list of best BMS?
Replies: 46
Views: 3977

Re: Best BMS or a list of best BMS?

So you want 40 amphr pack, thats huge,if your talking decent voltage.How many volts you want? Lipo, ifyour super confident, own your home,or (not in apt. building) konion, build it yourself,safe, or should say safer, no bms needed,THATS A BIG ONE, more capacity for the space than 26650 cells below,...
by bowlofsalad
Feb 10 2013 1:24am
Forum: Battery Technology
Topic: Looking for the best battery for my ebike.
Replies: 70
Views: 5753

Re: Looking for the best battery for my ebike.

I am in a very similar boat myself, choosing batteries is a daunting task, I seriously wish there was a rating system on this forum for people who own various batteries. I suppose that is another topic. I have a small list of vendors that I have read about on this forum, but it's hard to say what is...