Flight expirence with T-rexx 450 and FP 2500 - HeliFreak
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450 Class Electric Helicopters 450 Class Electric Helicopters manufactured by Align, Tarot, SYMA, Airhog, Chaos, HK and similar.


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Old 08-10-2007, 05:18 PM   #1 (permalink)
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Default Flight expirence with T-rexx 450 and FP 2500

Just wondering how well the t-rexx 450 will peform with a little added weight. Also , maybe get about an extra minute or so of flying? And one more......what about a 4S 2500 pack instead of a 3S.....any advantages? Thanks guys.
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Old 08-10-2007, 06:01 PM   #2 (permalink)
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Little weight? EVO 2500 is about 210g
TP 2100 pro-lite are about 142g and TP 2200 extreme are about 172g with deans installed on them. IMO the 2500 pack are way heavy. My bird is already a little nose heavy.
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Old 08-10-2007, 07:36 PM   #3 (permalink)
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I have one that I am using on my v2. It is stock and I do not really feel the weight. I also have a 2170, tp 2200, and the Align battery. I think it is a good match with the xl. That motor heats up my other batteries pretty good, but the 2500 stay a lot cooler. As for the weight, it kind of depends on what you are flying. If you have a heavier motor plus an additional bec or other extras, I think at some point the weight is going to catch up. I have not weighed my helicopter, but it should be the stock v2 weight plus about 50g.

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Old 08-10-2007, 08:08 PM   #4 (permalink)
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Keep in mind the FP 2500 pro-lites weigh the same as the 2170 EVOs. There are a few members flying the lite 2500's with very good results.
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Old 08-10-2007, 10:09 PM   #5 (permalink)
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Here you go!

https://www.helifreak.com/showthread.php?t=40239

Bob, did a video on this.

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Old 08-11-2007, 12:31 PM   #6 (permalink)
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Thanks Andre for the link! I don't even own the T-tex 450 yet ( i said yet ) , but was comparing battery weights with Mah's and the 2500 seemed like a good alternative. Since i'll be just starting out to , i think the little heavier battery may help in keeping the heli a little more stable. It sounds like Bob ( finless) is having good luck with the 2500 batts , and say's he can hardly tell the difference in the weight.......that's good news! 5+ minutes i guess in the heli world is good , and i guess i'll have to get used to that. I'm used to flying for around 10-20 minutes with the smaller glow and larger gas powered planes. My room mates 33% yak with a 3W 80 can get a 12-15 minute flight of some pretty hard 3D , and doesn't even burn 1/2 a tank. BUT......i think the guys with the larger .90 size heli's are getting some pretty long flight's as well.
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Old 08-11-2007, 12:59 PM   #7 (permalink)
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EVO 25 3s1p 2170 compared to EVO 25 3s1p 2500 with my V2 and each other.

I do not have a EVO Lite 2500 to add to the photos right this minute. Will get one.
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Old 08-11-2007, 02:03 PM   #8 (permalink)
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sheesh!!! is that thing even able to fit in the rex 450? that thing looks bigger than i thought it would. I wonder if Finless was using the HFX frame set up or something to get his to fit? For only 330 mah more....that thing looks twice the size.
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Old 08-11-2007, 02:14 PM   #9 (permalink)
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No it fits fine under the v2 canopy. It only weighs 35g more than the 2170.
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Old 08-11-2007, 07:20 PM   #10 (permalink)
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I just picked up an evo-lite 2500mah pack yesterday. Here's some comparison pics between it and an evo-25 2170mah.
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Old 08-12-2007, 12:24 AM   #11 (permalink)
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Quote:
Originally Posted by dct View Post
Little weight? EVO 2500 is about 210g
TP 2100 pro-lite are about 142g and TP 2200 extreme are about 172g with deans installed on them. IMO the 2500 pack are way heavy. My bird is already a little nose heavy.
You gotta remember most people are running metal tails which actually makes heavier batteries balance out much better. I have a TP prolite and it's waayyyyy to light, I ended up adding wheel weights to mine just to make it the same weight of my EVOs.
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