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Old Sep 06, 2006, 06:32 AM
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supi7's Avatar
CHICAGO
Joined Feb 2004
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Mini-Review
Giant Scale and F3A Pattern Brushless motors from TrueRC

Hi All,

Please check out the video of a 25% 3D Katana by Pacific Models
set up with our new 5340-7 Brushless outrunner.

Here is a little background to the video.

Lou of the Suburban R/C Barnstormers was finally fed up with his Super Tigre engine after a couple of dead stick landings and a crash.

www.TrueRC.com set him up with brand new 5340-7 250RPM/V Brushless Outrunner

And a pair or 15C 5S3P 6600mAh custom packs to run as 10S3P.



With a 18x10 Zinger this combination delivered 2800W of power, enough to give Lou over 1.64:1 power to weight ratio needed to enjoy his Pacific Models 25% 3D Katana once again.

ESC: CC Phoenix 85HV

Total weigh of the model is 17lb. This includes the battery packs and motor + extensive frame repair.



25% 3D Katana Video


Enjoy,

Dan
TrueRC

more video links at http://truerc.pitsbros.com/
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Old Sep 06, 2006, 07:39 AM
I'd rather be Flying
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Nashville, NC, USA
Joined Mar 1999
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Link was not useful. No information available there.
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Old Sep 06, 2006, 10:06 AM
Flyin brick
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Joined Feb 2005
736 Posts
Pure advertising.......... Dan, we ARE NOT in "for sale" or "vendors talk" section..... Watch for moderators

P.S. I didn't see anything interesting in that video Nothing what can be called "more than 1.64:1 ratio"......Just slow flying....
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Old Sep 06, 2006, 02:09 PM
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Guys the link is for the video only, I do not know what other info I could provide for you to be interested to watch it.

bobber, The plane is a 3D plane not meant for speed and I can not tell the man to change his flying style. 2 pilots flew the plane that same day and were impressed by it's performance and low cost of the setup. The gentelman that purchased this setup is also interested in converting his 25% YAK, that has to be good.

The thread is meant as an Information for the RCG members that are interested in the good performance that the "house" brand motors deliver.

The 2800W of continuous power is based on the actual Wattmeter results during WOT for 5min. Based on recomended 150W :1lb power to weight ratio this 17lb setup would deliver 164.7W per pound.


Best Wishes,

Dan
TrueRC
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Old Sep 06, 2006, 02:53 PM
I'd rather be Flying
davecee's Avatar
Nashville, NC, USA
Joined Mar 1999
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What I meant was your link didn't take me anywhere that could provide information about your products, just a couple of e-mail addresses.
Dave
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Old Sep 06, 2006, 03:08 PM
<- Balsa flies better ->
wolw's Avatar
Gustafs, Sweden
Joined Feb 2006
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click enter

//Peter
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Old Sep 06, 2006, 03:29 PM
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sneu's Avatar
United States, CA, San Diego
Joined Dec 1999
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Quote:
Originally Posted by supi7
The 2800W of continuous power is based on the actual Wattmeter results during WOT for 5min. Based on recomended 150W :1lb power to weight ratio this 17lb setup would deliver 164.7W per pound.
Watts "IN" and watts "Out" are not the same---given the likely efficiency of the motor in the low 80% range you really will have more like 130-135 watts/lb. Still pleanty of power to fly well, but it is possible to have lower weight power systems deliever more watts/lb by a fair amount. Just for example the 102 inch Yak54 that one of our club members flies has a watts/lb of 235. Plane weighs in at 23 lbs and has 6000 watts full power.

Steve
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Old Sep 06, 2006, 04:02 PM
I'd rather be Flying
davecee's Avatar
Nashville, NC, USA
Joined Mar 1999
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Quote:
Originally Posted by wolw
click enter

//Peter
There is no "enter" on the page I see. However I didn't think to click on the blank portion of the page, duh.
Dave
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Old Sep 07, 2006, 09:31 AM
suppomodel
Joined Aug 2006
15 Posts
use the wrong propeller!!! too small and under-load!!
should try APC-20X12WE instead!
we test it with Hacker-acro90 0timing
APC-20X12WE
34v
82A(start) 75A-Normal
result: 7100RMP
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Old Sep 07, 2006, 09:53 AM
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yes that's one of the things I sugested to the pilot. At the time thats te largest prop he had available, still great power on this setup.

Dan
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Old Sep 07, 2006, 10:07 AM
suppomodel
Joined Aug 2006
15 Posts
you are right,
also the True Motor KV is different even with Hacker and phoenix ESC.
The phoenix's is 15% higher
We test with Hacker so as the KV is 250. but with Phoenix, it will be 287
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