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Search: Posts Made By: write2dgray
Showing results 1 to 25 of 53
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Forum: Batteries & Chargers
06-01-2011, 12:43 PM
Replies: 26
Views: 25,853
Posted By write2dgray

RE: Comprehensive List of Electric Flight Components with Specifications, Prices, & Comparative Data

Nothing added recently, but here's an updated link for those looking for this info:
http://www.progressiverc.com/research

Cheers,
David
Forum: Batteries & Chargers
11-17-2009, 06:50 PM
Replies: 5
Views: 2,692
Posted By write2dgray

RE: Turnigy, GT, & I-Charger - Good Chargers

Six times the power for five times the price sounds about right, also remember the iCharger 1010 is a 10S charger vs. the Accucell listed which is a 6S.

A better comparison would be the iCharger...
Forum: Batteries & Chargers
09-03-2009, 09:47 PM
Replies: 15
Views: 1,336
Posted By write2dgray

RE: Accu-Cycler Elite or What?

I've had an Accu-Cycle Elite as well for about two years, I even recently modded it with a backlit negative OLED - very nice!

I run it with two LBA6, but it hasn't seen much use in about the...
Forum: Batteries & Chargers
09-03-2009, 05:38 PM
Replies: 15
Views: 1,336
Posted By write2dgray

RE: Accu-Cycler Elite or What?

Another option for packs with the same cell count is parallel charging. This will allow you to get 2+ packs done at once. Take a look at this thread for some great info on how to get on with this:...
Forum: Batteries & Chargers
09-03-2009, 05:36 PM
Replies: 9
Views: 1,026
Posted By write2dgray

RE: Powerful Power Supplies?

Yep, that 600W Meanwell for $65 linked to above can't be beat for the price. If you need any help getting going with that iCharger just let me know.

Cheers,
David
ProgressiveRC
Forum: Batteries & Chargers
09-03-2009, 05:34 PM
Replies: 12
Views: 19,740
Posted By write2dgray

RE: Dean's T-Connectors - HOW MUCH CURRENT??

The differences com in continuous or burst ratings.

Sure, they can do 100 amps, but for how long?

I do a lot of battery testing, some with very large cells and current draws of 300+ amps...
Forum: Batteries & Chargers
09-03-2009, 05:29 PM
Replies: 14
Views: 1,343
Posted By write2dgray

RE: Good Rechargable AA's?

Radio shack has what you need.

Any Eneloop is the way to go.

- David
Forum: E-Flight Power Sources
06-11-2009, 06:47 PM
Replies: 7
Views: 1,214
Posted By write2dgray

RE: How puffed is

And there you have it. Thanks for splainin that one.
Forum: E-Flight Power Sources
06-11-2009, 06:13 PM
Replies: 7
Views: 1,214
Posted By write2dgray

RE: How puffed is

Wow bozarth, I've never seen lipos damaged like that without going up in flames. What happened there?

- David
Forum: E-Flight Power Sources
06-11-2009, 06:12 PM
Replies: 3
Views: 816
Posted By write2dgray

RE: Leaking LiPO

If it's got that slightly sweet smell of leaking electrolyte, it's time to let it go. I'd discharge it down to 0V to be on the safe side prior to disposing.

-David<br type="_moz" />
Forum: E-Flight Power Sources
06-11-2009, 06:11 PM
Replies: 1
Views: 630
Posted By write2dgray

RE: Lipo recharging statistics

I have one crazy @$$ spreadsheet that calcs and records a lot of stuff.Send me an email if you'd like a copy of it or check my threads on RCG, I'm sure I've posted it for general use before and...
Forum: Batteries & Chargers
04-26-2009, 08:30 AM
Replies: 11
Views: 1,132
Posted By write2dgray

RE: best way to run 12 servos

You want 2S2P A123 cells. Two in series gives the desired voltage (~6V under load) and two in parallel (2x2300mAh cells) gives 4600mAh.

You could run separate packs, so two 2S1P packs for...
Forum: Batteries & Chargers
04-24-2009, 03:43 PM
Replies: 11
Views: 1,132
Posted By write2dgray

RE: best way to run 12 servos

A123 cells is the only way to go for this serious application. Two cells in series will give you 6V under load and two cells in parallel provides 4600 mAh. You can charge them in the plane, they...
Forum: MRC Charger Product Support (i.e. Super Brain, etc)
04-24-2009, 03:41 PM
Replies: 8
Views: 2,500
Posted By write2dgray

RE: 989 and Lipos

MRC doesn't really have a pulse. When was the last time they released anything new? The 989 in '05?
Forum: Batteries & Chargers
04-08-2009, 04:36 PM
Replies: 5
Views: 2,692
Posted By write2dgray

RE: Turnigy, GT, & I-Charger - Good Chargers

Turnigy chargers have often had balancing accuracy called in to question, but they offer quite a bit for the buck.

iChargers are known to be very accurate with mature firmware and great...
Forum: E-Flight Power Sources
03-27-2009, 03:37 PM
Replies: 5
Views: 757
Posted By write2dgray

RE: General question about LiPo charging

Some packs (older ElectriFly) require charging through the charge (not discharge) leads and do not have balance connectors because - they have an onboard PCB with built in balancing circuitry and...
Forum: E-Flight Power Sources
03-27-2009, 03:22 PM
Replies: 4
Views: 864
Posted By write2dgray

RE: 12-VDC 10 A power supply for home use

All depends on what you are charging and at what rate (amps). Looks like you have up to 120W in to your chargers (12Vx10A). For example, to charge one 3S lipos at 2 amps requires 25.2W output...
Forum: E-Flight Power Sources
03-27-2009, 03:18 PM
Replies: 2
Views: 647
Posted By write2dgray

RE: Need some new lipos

Joe,

As far as best, that's anyone's opinion. For some more choices, there are some extensive lists of batteries with specs., prices, and links that I've compiled here:

...
Forum: Brushed/Brushless motors, speed controls, gear drives
03-27-2009, 02:58 PM
Replies: 1
Views: 978
Posted By write2dgray

RE: Best price on a 40amp esc?

Here is a chart of the lowest priced ESCs I've seen available in the 40A range:

http://i85.photobucket.com/albums/k48/write2dgray/40AESCs.jpg

Those HiModel ESCs are dirt cheap. They even...
Forum: Brushed/Brushless motors, speed controls, gear drives
03-27-2009, 01:30 PM
Replies: 12
Views: 2,290
Posted By write2dgray

RE: robbe ro power Lipo batteries !!

The notes still exist on the Robbe website for these batteries here:

...
Forum: Batteries & Chargers
03-27-2009, 01:01 PM
Replies: 9
Views: 14,717
Posted By write2dgray

RE: I can spot weld A123 cells!!!

Very nice packs there. I could certainly use a tool like that around the shop. What are these packs going in?

- David
Forum: Batteries & Chargers
11-22-2008, 05:04 PM
Replies: 26
Views: 25,853
Posted By write2dgray

RE: Comprehensive List of Electric Flight Components with Specifications, Prices, & Comparative Data

The RC product lists have received a long overdue update with tons of added products and updated prices. Here are just a few of the products now listed:

Many new motors including Reaper...
Forum: Batteries & Chargers
10-29-2008, 01:02 PM
Replies: 15
Views: 2,550
Posted By write2dgray

RE: What peak charge amps to charge at?

A123s are the only ones I know of that don't mind a 10*C charge rate.
Forum: Batteries & Chargers
10-09-2008, 07:19 PM
Replies: 15
Views: 2,550
Posted By write2dgray

RE: What peak charge amps to charge at?

Yes, 1C is in general a good rule of thumb for lipos, although some lipos are safe to charge at 2-3C with proper charging equipment.

- David
Forum: Batteries & Chargers
10-09-2008, 06:00 PM
Replies: 3
Views: 1,021
Posted By write2dgray

RE: Need a123 comparison table and/or quick ref

Absurd is not quite the adjective I would have used - but I am glad you guys have found it useful. FYI - there is a sale with good prices on loose A123s over at battlepack.com. I will update the...
Showing results 1 to 25 of 53
 
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