Thunder Power 1320 3s 11.1v will fit the Trex 250 - HeliFreak
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250 Class Electric Helicopters 250 Class Electric Helicopters manufactured by Align, Tarot, SYMA, Airhog, Chaos, HK and similar.


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Old 11-17-2008, 08:39 PM   #1 (permalink)
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Default Thunder Power 1320 3s 11.1v will fit the Trex 250

Very tightly but it does well.. I got about 10 minutes of flight time.
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Old 11-17-2008, 09:58 PM   #2 (permalink)
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As compared to the Aling 850 ?
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Old 11-17-2008, 11:10 PM   #3 (permalink)
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How are the flight characteristics? are you holding elevator back to keep it level? Pleasant or flyable?
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Old 11-17-2008, 11:17 PM   #4 (permalink)
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Quote:
Originally Posted by LifeIsGood View Post
As compared to the Aling 850 ?
I dont have a Align 850, so I cant compare, but others report about 5-6min of FF.

I also have the TP 910 and get about 6-6.5min. The 1310 so far twice down to 3.7v each cell and 10 min of FF and hovering.
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Old 11-17-2008, 11:34 PM   #5 (permalink)
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Quote:
Originally Posted by Rbeal31 View Post
How are the flight characteristics? are you holding elevator back to keep it level? Pleasant or flyable?
Very pleasant, and certainly manageable.


the 910 weighs 65g and its 15x33x65
the 1320 weighs 84g and its 19x34x65

so just a little fatter and heavier by 19g.

the align 850 weighs 68g and its 20x30x55
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Old 11-18-2008, 01:06 AM   #6 (permalink)
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I got 13 min with my 1320.
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Old 11-18-2008, 10:20 AM   #7 (permalink)
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nice! good report guys. but shifting cg would be a pain going from 800mah packs to 1300 mah. ive got 2 tp 1320s laying around doing nothing. maybe ill give them a try.
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Old 11-18-2008, 10:24 AM   #8 (permalink)
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this is where Align should have taken a lesson from Gaui on the V2 and had both a forward and rear motor mount. that woulda been perfect to shove that huge battery in there with no CG issues.
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Old 11-18-2008, 02:40 PM   #9 (permalink)
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I notice its only 13C, is that going to be a problem? Also my canopy fits on tight already with the align lipos, my mounts are bending forward haha
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Old 11-18-2008, 02:50 PM   #10 (permalink)
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WOT is only 11 amps so a 20c bat is a wast of grams. I did move the canapy about 1/2 inch forward.
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Old 11-18-2008, 02:57 PM   #11 (permalink)
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Come again? my align 20C rating is a waste of grams?
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Old 11-18-2008, 04:28 PM   #12 (permalink)
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The tp prolite 910 3s weighs less than a align 20c. longer run time less weight. At 16c its good for about 14 amps. The trex 250 at WOT pulls 11amps. I did find that the 250 doesn't mind a little weight. It performs about the same with the Thunderpower 730, 910,and 1320. Now, if I can get my 2100 in it.
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Old 11-18-2008, 05:31 PM   #13 (permalink)
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me and my buddy both tried the tp 1320 pack. we had to mod the canopy to get the pack to fit. even then it is extremely tight. i personally would not run that pack.
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Old 11-18-2008, 07:41 PM   #14 (permalink)
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why? because you had to mod the canopy? what kinda mods?
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Old 11-18-2008, 08:23 PM   #15 (permalink)
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Like this one ARKY did:

https://www.helifreak.com/showthread.php?t=103562

I moved mine 15mm(a lttle farther than ARKY) 1320 fits with roon to spare.
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Old 11-18-2008, 08:31 PM   #16 (permalink)
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I'm trying to find the stock battery but no luck so far -- I'm looking into the TP 910 as an alternative. The long flight times with the 1320s sound good, but I'm afraid that with that tiny battery tray to frame connection, one rough landing would break the tray or the frame...
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Old 11-18-2008, 10:26 PM   #17 (permalink)
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for the canopy i had to drill the hole back where the grommets go. but i wouldn't run that pack. it warped the canopy with that pack installed.
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Old 11-23-2008, 08:41 PM   #18 (permalink)
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Default 1320 tp packs

i put the tp 1320 pack on my 250 and it was to heavy. i would go with the 910 or align for now
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Old 11-23-2008, 08:57 PM   #19 (permalink)
 

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What flight times would you get with a 100% flat curve flying some 3D?
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