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T-REX 450 › Lipo Weight
10-24-2013 08:43 PM  4 years agoPost 1
RCHSF

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NC

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I'm looking at getting a few low cost lipo's for my 450. The only pack I have now, is about shot, and it's a 20c and weights 182g. The one's I'm looking at on e-bay are 40C and weight 200g. My bird balances right on the money with the 182g pack, would the 200g make it to nose heavy?

Item no. 280893583592

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10-24-2013 08:54 PM  4 years agoPost 2
wrongler

rrProfessor

Brewerton, New York

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I don't really think you will notice the difference.
You can put your lipo in and add the extra 18g to it and see how it balances.

Bill Whittaker

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10-24-2013 10:37 PM  4 years agoPost 3
RCHSF

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NC

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Thanks Wrongler,

Well I was off on my pack weight, it was actually 184g
I used 2 nickels and two penny's to make my pack weight 200g.
Heli balances perfect still with 200g under the hood. Bet I could even go up to maybe a 60C pack. But I'll try these first.

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10-24-2013 11:15 PM  4 years agoPost 4
wrongler

rrProfessor

Brewerton, New York

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You could just keep adding weight and see how much it takes to get nose heavy.

Bill Whittaker

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10-24-2013 11:19 PM  4 years agoPost 5
RCHSF

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NC

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I've heard of people running 6S on 450's, that would be to much for me, but what about a 4S? My FB 450 seems under powered. I guess if it could run a 4S, I'd at least have to get a bigger esc, than my 35A, not sure about the motor.

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10-25-2013 02:07 AM  4 years agoPost 6
ICUR1-2

rrElite Veteran

Ottawa, Ontario

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I'm running a 450 pro stock 3400kv MX on 4s
using a castle 35 amp great run times 6 min+
pack weight I find is right around 200 grams
look for 4S2000 I'm using 1800 50C's and had to add weight to balance

spending time, paying attention

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10-25-2013 06:08 AM  4 years agoPost 7
Solmanbandit

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Tucson , AZ

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Get a 30 or 40c 2200mah 3s. That is a standard setup and you will be fine. If you want power on a 3s. Get the KDE motor with a 15T pinion. Guaranteed power will not be an issue. Also ditch the 35a ESC and get a castle 50 lite. Align ESC's suck and haven't used them for a while because I had a few of them burn up on me. My 450 setup is absolutely kick ass and dialed in perfect. 6s on a 450 is overrated in my opinion and an awesome setup can be done one a 3s.

Trex 700E / Trex 500 ESP - Ikon/ HD 500 - Ikon 2/ Goblin 500 Ikon 2

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10-25-2013 01:29 PM  4 years agoPost 8
ICUR1-2

rrElite Veteran

Ottawa, Ontario

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50 amp ESC is over kill on a 450
This will do you just fine.
with a 450 MX motor on 4S everything lands only slightly warm.

http://www.readyheli.com/010-0122-0...SC_p_41738.html

spending time, paying attention

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10-25-2013 01:42 PM  4 years agoPost 9
wrongler

rrProfessor

Brewerton, New York

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I run a 6s on the Align 450L, It's a little nose heavy but flies fine!

Bill Whittaker

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10-25-2013 05:28 PM  4 years agoPost 10
Solmanbandit

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Tucson , AZ

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50 amp ESC is over kill on a 450
This will do you just fine.
with a 450 MX motor on 4S everything lands only slightly warm.
A 50a ESC is not an overkill for a 450. That may be the case if you are doing basic flying, but hardly the case. A 50a works perfect for a 450.

Trex 700E / Trex 500 ESP - Ikon/ HD 500 - Ikon 2/ Goblin 500 Ikon 2

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10-25-2013 05:35 PM  4 years agoPost 11
RCHSF

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NC

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We see basically all 450's come with a 35A, that is just middle of the road esc. 50A would be a slight upgrade, and probably what I'll get. Sure not going to buy another 35a.

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10-26-2013 12:12 AM  4 years agoPost 12
ICUR1-2

rrElite Veteran

Ottawa, Ontario

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I suppose a 50 amp would be considered an upgrade for a 3S system
but as you already know raising your cell count will lower your amps,
This new ESC from castle fits the bill perfectly for 4S and up to 6S
the plus is it's lighter than a 50 amp so the weight saved could be used for more mahs.

Thought you were enquiring about a 4S setup sorry if I misunderstood

spending time, paying attention

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10-27-2013 05:46 PM  4 years agoPost 13
turboomni

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East of the Equator

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As far as weight goes I use a Pulse 1350 lipo 3s on my old trex 450 v2 that I converted to FBL with the Align dfc head and a Ikon.I also have a 2250 mah pulse also. To balance correctly with the 1350 [which is about half the weight of the 2250] I extended the battery tray about one inch. The CG is good with the lighter lipo. I run a 11T pinion with 100% throttle in stunt mode. I run abit less pitch as the weight is a good bit less with this lipo. 11 degrees comes to mind. My timer is set to 5:30. The esc is all but ambient temp, Lipo is warm but far from hot and the Voltage per cell is 3.78 after a flight. It flies very light and efficiently and feels much more nimble than with the 2250 heavy pack. Pulse 1350 packs are 17.99 at Heli Direct so they are a good bang for the buck. Heavy Smack?? No .. This no rocketship but it fly's extremely well.

Setup is everything, All my heli's can fly far better than I can pilot them

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10-27-2013 06:09 PM  4 years agoPost 14
Solmanbandit

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Tucson , AZ

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Heavy Smack?? No .. This no rocketship but it fly's extremely well.
You must fly very conservative or run your battery down to nothing to get that flight time on a battery that size. Add a good motor and a proper setup, the 2200 won't be noticed at all. I fly aggressive and I get a 5 min time with a 2200 mah battery.

Trex 700E / Trex 500 ESP - Ikon/ HD 500 - Ikon 2/ Goblin 500 Ikon 2

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10-27-2013 06:40 PM  4 years agoPost 15
turboomni

rrProfessor

East of the Equator

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Its a relaxing heli to fly. The Lipos show no ill affects. There is alot less weight to fly around so it is more efficient. Requires less pitch to get the job done. Guys at the field can't believe how well it does. No I dont fly hard like some as my primary heli's are 2 Min Air Gassers . For harder stuff I will get a 550 this winter as I sold off all my nitro 50 stuff. The Pulse 1350 weights in at 113G and the 2250 is 205G. A big difference!
With my 2250 lipo and this setup I get abit over 7 minutes comfortably. It ain't for everyone to be sure but I am happy with it for a 450. I tried the 1350's because I use that size pack for my autogyro's and used one for the fbl 450 maiden and liked it!

Setup is everything, All my heli's can fly far better than I can pilot them

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10-28-2013 07:42 AM  4 years agoPost 16
Solmanbandit

rrElite Veteran

Tucson , AZ

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I get abit over 7 minutes comfortably
What is your end voltage per cell with the 2200 and 1350 mah batteries?

Trex 700E / Trex 500 ESP - Ikon/ HD 500 - Ikon 2/ Goblin 500 Ikon 2

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10-28-2013 02:40 PM  4 years agoPost 17
turboomni

rrProfessor

East of the Equator

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I end up with 3.74 to 3.79 per cell on both. I find it interesting that I only get 2 minutes more [actually 1 1/2 minutes ] more run time with the 2250. But it makes sense since the 2250 weights in at almost twice as much as the 1350. There is a noticeable difference in the way it fly's between the 2 sized packs. I would think 2 Pulse 1350's would be great for you 6 cell guys on a 450.

Setup is everything, All my heli's can fly far better than I can pilot them

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10-28-2013 05:13 PM  4 years agoPost 18
jschenck

rrProfessor

La Vista, NE.

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I have personally built and flown a Trex 450 on 4S using the stock 35A ESC. Works great, change the pinion to 11T and you *must* run a separate BEC. Don't use the built in ESC's BEC. I bought a $7 Turnigy 5A BEC.

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10-28-2013 07:01 PM  4 years agoPost 19
RCHSF

rrKey Veteran

NC

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I'm going to try and new 3s 2200 40c pack and see if that makes it fly better, if not I'll bump everything upto 4S with a ex-bec, and 11t p.

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10-28-2013 07:11 PM  4 years agoPost 20
turboomni

rrProfessor

East of the Equator

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If your present pack is only 20C and old you are gonna see a big difference with a new 40C 2200 ..

Setup is everything, All my heli's can fly far better than I can pilot them

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