HobbyKing.com New Products Flash Sale
Reply
Thread Tools
Old Sep 24, 2010, 11:56 AM
Xtreme Power Systems
Lake Havasu, AZ
Joined Jun 2005
15,918 Posts
We're holding 3.9v per cell under full load and burning up motors right and left... we are all about to find out who really can handle the amount of power they are rated - and who can't!
JimDrew is offline Find More Posts by JimDrew
RCG Plus Member
Reply With Quote
Sign up now
to remove ads between posts
Old Sep 24, 2010, 01:53 PM
Renegade Fun Forever!!
rvincent's Avatar
Fontana, California, United States
Joined Jul 2004
27,594 Posts
Are you burning up the light versions?
rvincent is offline Find More Posts by rvincent
Reply With Quote
Old Sep 24, 2010, 03:01 PM
Watt me worry?
Madmax1965's Avatar
Florida
Joined Mar 2006
4,090 Posts
I need some 6s& 5s (at least 5000mah but would prefer more Mah.) Jim but nothing on your site each time I look.
I can say I have the older XPS packs and they have been very good but it is getting time to replace them. Hope to see some new packs soon Jim.
Madmax1965 is offline Find More Posts by Madmax1965
Reply With Quote
Old Sep 24, 2010, 06:01 PM
deltas are cool
AIR SALLY's Avatar
Tehachapi ,CA.
Joined Apr 2006
21,165 Posts
i think they have some on the way
AIR SALLY is offline Find More Posts by AIR SALLY
Reply With Quote
Old Sep 24, 2010, 07:21 PM
Xtreme Power Systems
Lake Havasu, AZ
Joined Jun 2005
15,918 Posts
Quote:
Originally Posted by rvincent View Post
Are you burning up the light versions?
We have burned up a variety of motors, and those that have survived are on the ragged edge. When we go to 75C or nano wires, those won't be usable anymore. So, we are looking at other alternatives. We are safe if the motor can handle 6,000+ watts continuous on 12S. We are seeing 11,000+ watts continuous now with 15S using these batteries.
JimDrew is offline Find More Posts by JimDrew
RCG Plus Member
Last edited by JimDrew; Sep 25, 2010 at 04:31 PM. Reason: typos!
Reply With Quote
Old Sep 24, 2010, 07:23 PM
Xtreme Power Systems
Lake Havasu, AZ
Joined Jun 2005
15,918 Posts
We have a huge shipment already in route and another being prepared. When you guys see the pricing for the batteries now, you are going to be floored! Our 65C 6S5000mAh packs will be $45 cheaper than our Platinum packs were! ($140 vs. $185).
JimDrew is offline Find More Posts by JimDrew
RCG Plus Member
Reply With Quote
Old Sep 24, 2010, 07:34 PM
Registered User
bri6672's Avatar
San Diego
Joined Jul 2009
2,281 Posts
Jim,

So it sounds to me that there are going to be some changes needed to make the smaller motor more "bullet proof" to the newer lipos coming to market. Have you guys found a solution and if so, is there a time frame we can expect? I am a believer in good things come to those who wait and knowing that the smaller motor is over 1 lb lighter than the original big screamer is making me very happy I waited! But I also want to be realistic of the time frame for my current project. So any guesses on when you will start taking orders for the smaller motor would be really helpfull!
bri6672 is offline Find More Posts by bri6672
Reply With Quote
Old Sep 24, 2010, 07:35 PM
Watt me worry?
Madmax1965's Avatar
Florida
Joined Mar 2006
4,090 Posts
Fantastic prices Jim!! As I said you have great packs....in fact I have Flight power packs( inheirited) which do not stand up to my older packs. I have one good 6s 5000mah pack left so please let us know when the shipment is in....I had to shelve my Hawk because I need packs. I am wondering how the new batteries will work on my prop plane motors? Are the motors you are burning only those on EDF?
Madmax1965 is offline Find More Posts by Madmax1965
Reply With Quote
Old Sep 24, 2010, 07:52 PM
Senior Member
Arngeir Blakseth's Avatar
Molde, Norway
Joined Jan 2001
2,464 Posts
You all know the easy and sensible solution to better batteries is to actually drop a cell to keep the total voltage under load at the same levels as with older generation batteries?
Arngeir Blakseth is offline Find More Posts by Arngeir Blakseth
Reply With Quote
Old Sep 25, 2010, 01:11 PM
Build'em and Crash'em
Ken Lapointe's Avatar
Narragansett, RI
Joined Oct 2000
3,252 Posts
Quote:
Originally Posted by Arngeir Blakseth View Post
You all know the easy and sensible solution to better batteries is to actually drop a cell to keep the total voltage under load at the same levels as with older generation batteries?
Very true, since as soon as you think its "bullet proof" on 12S some new battery will come out that requires you to rethink that bit.

Not so long ago my larger EDF planes were considered 24 Cell planes (NiCad), That same plane is 6 cell (Li-poly)plane now. You just are not going to be able to hold the battery technology constant.

Just call it a 6kw Fan system with max input voltage of XX and then let the buyer figure out the number of cells they need. At the end of the day the battery pack voltage is too variable to just state its a max 12S setup.
Ken Lapointe is offline Find More Posts by Ken Lapointe
Reply With Quote
Old Sep 25, 2010, 02:25 PM
Registered User
Joined Jul 2005
77 Posts
Throw us a bone...We don't have 65C packs now.

I do have a Falcon and a Reaction waiting on a power system.
lt40 Flier is offline Find More Posts by lt40 Flier
Reply With Quote
Old Sep 25, 2010, 04:33 PM
Xtreme Power Systems
Lake Havasu, AZ
Joined Jun 2005
15,918 Posts
We have already had people have to drop a cell (or two) when going from our original 30C (black) to our 45C platinum (silver) packs. They are likely going to have to do that again with the 65C batteries.
JimDrew is offline Find More Posts by JimDrew
RCG Plus Member
Reply With Quote
Old Sep 25, 2010, 07:15 PM
Watt me worry?
Madmax1965's Avatar
Florida
Joined Mar 2006
4,090 Posts
Jim..........How will we be able to tell which is the new packs....just by the 65 c rating or will you post new photos on your site? I really do need some packs as I am flying prop planes at the moments as I don't have enough EDF packs.

I am flying the old black packs @ 6s 5000mah. Maybe with the new packs I could fly 5s 6600mah and keep the same weight.....Jim?
Madmax1965 is offline Find More Posts by Madmax1965
Reply With Quote
Old Sep 26, 2010, 03:34 PM
Xtreme Power Systems
Lake Havasu, AZ
Joined Jun 2005
15,918 Posts
Most of our older packs will be removed from our website. We will only be selling the 65C packs from now on.

The new packs are a little heavier (I think 1oz for a 6S setup), so if you do drop a cell and going with the 6800mAh (no longer 6600mAh) it could be a wash.
JimDrew is offline Find More Posts by JimDrew
RCG Plus Member
Reply With Quote
Old Sep 26, 2010, 07:13 PM
Watt me worry?
Madmax1965's Avatar
Florida
Joined Mar 2006
4,090 Posts
6800 mah? Wow! I thought they were to be 6600mah....that is great. Do you really believe we can drop a cell to 5s and still have the performance of a 6s? I would like very much to have the power and more MAH for longer flights. I am flying 10s @ 5000mah in my HAwk. I was squeaking out 5-6 minutes on the Stumax @ 5000Mah and 10s
Madmax1965 is offline Find More Posts by Madmax1965
Reply With Quote
Reply


Thread Tools

Similar Threads
Category Thread Thread Starter Forum Replies Last Post
Wanted XPS/Littlescreamer Dynamax Fan system RCSCALEGUY Aircraft - Electric - Jets (FS/W) 0 Jul 16, 2010 01:47 AM
Sold NEW XPS / Little Screamers Dynamax Xtreme Fan System badbill Aircraft - Electric - Jets (FS/W) 3 May 19, 2010 10:05 PM
Discussion My new R1/Dynamax Fan -- T-38 and Foremost 150 CRCJA Electric Ducted Fan Jet Talk 19 Apr 15, 2010 06:33 PM
Discussion Formost 150 & XPS Dynamax fan system bruff Electric Ducted Fan Jet Talk 12 Jan 03, 2010 12:36 PM
For Sale NIB Dynamax ducted fan propulsion system for OS .91 DF engine WARBIRDMAN Aircraft - Fuel - Airplanes (FS/W) 1 Jun 14, 2005 06:30 PM