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Home✈️Aircraft🚁HelicopterHelicopter Main Discussion › Which is better for aggressive 3d?
12-10-2013 02:47 PM  5 years ago
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BradNewman

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Orange, Tx-USA

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Which is better for aggressive 3d?
Which is better for aggressive 3d? A Trex600N w/ OS 55hz or Trex700N w/ OS 91hz?
I'm thinking the 600, but I have not had either set up.
Remember to keep everything balanced!
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12-10-2013 02:52 PM  5 years ago
wrongler

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Brewerton, New York

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I have a 700 with the 91 and its pretty good, my buddy has 700 MA with the 105, the 105 is better for hard 3d.
I am building the 600 nitro DFC nitro with a 55 and I think its going to be better than the 700 with the 91.
Bill Whittaker
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12-10-2013 03:04 PM  5 years ago
meowguy

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Saco, ME

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The 600 uses half as much fuel. A 700 will go through 23 ounces in 10 minutes. At $23 per gallon for 15% and $33 per gallon for 30% that is going to add up. The 600 does everything a 700 will do and you may find it quicker. The 700 is the more graceful of the two and it uses more sky. I have both and prefer the 700. I use 15% nitro."Sweet dreams and flying machines in pieces on the ground." J. Taylor
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12-10-2013 03:36 PM  5 years ago
BradNewman

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Orange, Tx-USA

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Thanks for the comments y'all!

Any other comments?
Remember to keep everything balanced!
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12-10-2013 03:39 PM  5 years ago
Justin Stuart (RIP)

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Plano, Texas

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Bigger is always better. If you can afford it, go bigger.

The most aggressive helicopter is the 450 sized. But the best presence in the air comes from the larger helicopters.
Avant RC
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12-10-2013 06:17 PM  5 years ago
BradNewman

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Orange, Tx-USA

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Bigger is always better. If you can afford it, go bigger.
I agree, bigger is better! I've had everything from the small little coaxes to a 700E, and bigger is better. I'm just worried that the 700 w/ the OS 91 won't have the power like the 600 w/ the OS 55. If the 700 had a bigger engine I would probably go for that, but I don't know, that's why I would like to hear from anyone who has had these set ups.

Thanks again for the responses I have already gotten!
Remember to keep everything balanced!
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12-10-2013 06:30 PM  5 years ago
Kinger

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Granville, OH

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I have both a 700N with a OS91HZ and a 600N with the 55HZ. You will not find the 91 lacking for power compared to the 55. To me the 91 feels like it has more torque. On the other hand the 600 feels snappier than the 700 probably due to the fact it has less mass to flip and roll.

After flying 90 size models for many years, last year I got back into the 600 size and I don't regret it one bit. It's easier on fuel and will do everything the 700 does. The only downsides are it's harder to see at a distance, it's a little harder to pilot in the wind due to less mass and the hang time is not as good in autos.

In the end, both are fantastic models and you won't be disappointed in either.

Be forewarned......neither will have the power of the 700e you were previously flying unless you had it toned down for nitro like flight times.
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12-12-2013 04:34 PM  5 years ago
Santiago P

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Dayton

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+1

A well setup and tuned 90 will out perform the smaller 50 powered heli.

You gain aero efficiency when you go up in size.

Given two different size helis with the same power to weight ratio, the one with the larger disk will perform better.

Santiago
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12-12-2013 04:51 PM  5 years ago
wrongler

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Brewerton, New York

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I just keep on learnin'.Bill Whittaker
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12-12-2013 04:56 PM  5 years ago
fastflyer20

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N. Tonawanda, NY

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700 for sure, but that is if you are comfortable with it. Some pilots can throw around a smaller heli better because it can be less intimidating.

The FBL controller can also have a big impact.
Tom
CAUTION - my posts are based on my experiences, yours may be different.
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12-12-2013 06:47 PM  5 years ago
BradNewman

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Orange, Tx-USA

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Thanks everybody!
After reading all the posts I realized that the question I should have asked is: Which Heli has a better power to weight ratio, Trex700 w/ 91hz or Trex600 w/ 55hz?
Remember to keep everything balanced!
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12-12-2013 06:49 PM  5 years ago
johnbs8

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roseville michigan

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How about a 600 with a .90 engine!! Thats the best for hardcore 3d!!!TT X50 Nitro
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12-12-2013 07:02 PM  5 years ago
Nasty1

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Enf,Ct-USA

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I got a fury 55 FB with the os55 muff pressure motor,
and a trex700 FB OS91 regulated F3C motor,

The 700 just has amazing torque, even tho it's pig rich.

Id rather fly the 700 over the 50, I think the 91 has way more power,

yes it's slower, (maybe Agile would be a better word) but I'm not after speed.
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12-12-2013 09:30 PM  5 years ago
Santiago P

rrProfessor

Dayton

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How about a 600 with a .90 engine!! Thats the best for hardcore 3d!!!
Not really. Even if you change the gearing which most folks don't do, you end up with 90 size fuel consumption, stripped main gears, broken clutches, and the ultimate, broken Jesus bolts, and a heli falling out of the sky.

Ask me how I know that? yep

S
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12-12-2013 09:48 PM  5 years ago
Kinger

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Granville, OH

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Based on my seat of the pants impression (and nothing else), I'd say the 90 size model is going to have the better power to weight ratio just because of that extra torque and disc size. The machine will "feel" more powerful in tic tocs and what not than the 55 powered model. You can do the exact same maneuvers with the 50 as you can the 90, it just take a bit more collective management.
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12-12-2013 10:05 PM  5 years ago
dchekas

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Farmington, CT

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The .90 size heli will be better in virtually every category.

The .90s have better power to weight, a larger disc that will auto better, better stability, and a bigger presence in the sky.

Yes, they will consume more fuel. But, it's difficult to go back to the 600N after flying a 700N. The difference is pretty dramatic.
Team Align, Team Futaba, Team Byron Fuels, Team Thunder Power
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12-12-2013 10:12 PM  5 years ago
johnbs8

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roseville michigan

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Not really. Even if you change the gearing which most folks don't do, you end up with 90 size fuel consumption, stripped main gears, broken clutches, and the ultimate, broken Jesus bolts, and a heli falling out of the sky
couple guys fly those at my club and its insanely awesome. the only thing i've seen is a clutch break from time to time which was fixed in a matter of minutes. i dont know what your doing to strengthen the heli but i know my bros do thiers up solid!!
never seen a jesus bolt break! main gears strip on electrics too..

power to weight... and as far as flight time, bout the same as an electric flight only added smoke
TT X50 Nitro
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12-12-2013 10:12 PM  5 years ago
heli-cuzz

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Pittston, Pa. USA

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Yes, they will consume more fuel. But, it's difficult to go back to the 600N after flying a 700N. The difference is pretty dramatic.
+1
Fury 55 NIB Furion6 CGY750 fbl helicopter-Frenzy CGY750 fbl nitro-Frenzy fbl NOBAR90
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12-12-2013 11:56 PM  5 years ago
Mr.Bowflex

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Toronto Canada

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I just like how everyone is talking about nitro for a change!
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12-13-2013 12:02 AM  5 years ago
BladeStrikes

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Shelby TWP,Mi

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I had the Trex 600N with OS 55 and Trex 700N with OS 91HZ-R (same as the OS 91HZ but has a reg on the carb...Power wise I could bog the 700N a little more than the 600N...The 600N always recovered faster because it has a better power to weight ratio..If I had to pick between the 2,I would go with the 600N with OS 55/Hatori pipe...

Now the Trex 700N with YS 91SR 3DS with Haroti pipe is a stright up beast,blows the 600N with OS 55 away..Then I had a buddy help put a YS 91SR in my 600N and that blew the 700N away..

For the record,what MoneyPitVictim said about the 600N with 90 size engine isn't true at all..I ragged the living hell out of mine for a few hundred flights..I stripped one main gear because the clutch stack bolt come loose and broke one blade grip stand off in flight which was all on me because I crashed it many times and never changed it..Other than that,she was my fav heli...Flight time/fuel useage between the 600N with OS 55 and 600N with YS 91SR was about the same..

700N with OS 91HZ R

Watch at YouTube

700N with YS 91SR 3DS

Watch at YouTube

600N with OS 55

Watch at YouTube

600N with YS 91SR

Watch at YouTube

If you have a choice,go with the 700N and with YS 91SR 3DS or 600N with YS 91SR<-- That will be more power than you'll need..
If you have no choice and ya have to pick betwen the 700N with OS 91HZ and 600N with OS 55,go with the 600N with OS 55..The power to weight is better and recovers better if bogged/loaded..its also a little bit cheaper t repair..
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Home✈️Aircraft🚁HelicopterHelicopter Main Discussion › Which is better for aggressive 3d?
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