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07-02-2014 05:43 PM  6 years ago
BobOD

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New York- USA

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The Mustang Cobra is designed to use that power pretty well. Lots of metal used for structural.

I'm actually quite interested in how much power the 690sx can actually transmit. I double stacked two Trex500 class one-ways for my 600 years ago to be able to get more out of it. It helped for sure...but still not perfect. It seemed one would lock up first and take the brunt of the load. Using a larger diameter one did a much better job in the end.

Main point is, you have to consider both attributes, weight and power handling ability, together to be meaningful.
Team POP Secret
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07-02-2014 09:06 PM  6 years ago
ICUR1-2

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Ottawa, Ontario

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I find it funny when some one says tune down your electric to equal nitro HS so you can get nitro flight time.

funny thing is both my 450 and 500 are tuned for max flight time and the best time is 6:30 if I run them slower they aren't fun anymore. Even the Swift 550 I had would only get 5 min.

have you seen the videos of 90's running on 6S ? very boring to watch and not near as fast as a nitro.

spending time, paying attention
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07-02-2014 09:17 PM  6 years ago
Ronald Thomas

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Gainesville, Fl, USA

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I am saying spin the same HS as the nitro….not 2400. Nobody wants a .90 that spins 1600 for any real fun…Team MikadoUSA 480XXTreme, 550SX, 600SX, 700XXTreme, 800XXTreme!!
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07-02-2014 10:16 PM  6 years ago
3dgimble

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Rochester

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The maximum average flight time I ever got from an electric whille doing 3D was 5.5mins and that was with an Align 700mx, with that setup the performance was soggy at 2000hs, only came alive above 2150.

With the more beefy 45 series can motor, torque will rise so you can lower HS but flight time will fall off by about 1-2 mins. With a more generous size 4530-40 with HS of 2000 with Castle, Kontron, or YGE gov I still ended up with 4 mins tops, 3:40 tops if I really got on the sticks.

I was all electric for four years, started with electric, played with nitro a little then really gave it a go for a year. What I have to say now, I need less equipment for nitro to fly all day, most of which I can leave in my car. The excitement is there with nitro, plus drama and theatre. No gens to carry to club, to charge a hord of lipos, no worries about electronics on 90 helis failing. Fuel and go, you dont even need to shut the motor off.

One last thing to open the eyes of power hungry LiPo heads;

"YS 120 SRX"

.
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07-02-2014 10:26 PM  6 years ago
Ronald Thomas

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Gainesville, Fl, USA

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Electronics fail all the time on nitros just like electrics...and I would like to see a YS 120 fly for 8 minutes....Team MikadoUSA 480XXTreme, 550SX, 600SX, 700XXTreme, 800XXTreme!!
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07-02-2014 10:36 PM  6 years ago
kthane

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Pensacola

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I get 7.5 min on my 700e with mx700 and 5Ah batteries running 1950. I get 8.5 min on my OS 91HZ-R 3d speed running 1930. I'm swinging 14mm longer blades on the 700n. I love flying both and would not part with either of them. I think nitro is making a bit of a comeback.
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07-02-2014 10:46 PM  6 years ago
Rodney Kirstine

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Caldwell, ID - USA

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Electronics fail all the time on nitros just like electrics...and I would like to see a YS 120 fly for 8 minutes....
I can get 8 minutes out of the 105HZ-R and 120SRX on my N7s without flying super conservatively. I have my timer set for 7-1/2 minutes and the only time I'm out of fuel in that amount of time is when I'm really railing on it the entire flight.
Rodney
Team Synergy Field Rep, Rail Blades
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07-03-2014 01:19 AM  6 years ago
BobOD

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New York- USA

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Sure, you can get 7 minutes out of an electric...if you don't bore easily.
I've never see an electric flight more than 4-5 minutes that didn't bore me...regardless of HS.
Above about 3 or 4 minutes, the power of Nitro is superior....period.
Smoke and noise are a bonus.
Team POP Secret
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07-03-2014 02:04 AM  6 years ago
Ronald Thomas

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Gainesville, Fl, USA

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I get the same power from beginning to end. It is all in the setup and of course that takes aptitude as well Team MikadoUSA 480XXTreme, 550SX, 600SX, 700XXTreme, 800XXTreme!!
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07-03-2014 02:59 AM  6 years ago
Rodney Kirstine

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Caldwell, ID - USA

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You must have some special batteries that none of us have access to because the laws of physics disagree with you.Rodney
Team Synergy Field Rep, Rail Blades
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07-03-2014 04:00 AM  6 years ago
BobOD

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New York- USA

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It's magical.

Here are some numbers to chew on.
12S 5000 flown for 7 min - average shaft power = 1.5hp

BORING!!!

Some more numbers
12S 3700 flown for 4:30 - average shaft power = 1.8hp
Still pretty BORING!!!

Unless you're flying a 37 that is...then it's decent.
Team POP Secret
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07-03-2014 10:35 AM  6 years ago
Helicrazy4

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West Virginia

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Nitro is still Strong with the new models of TSA Model Infusion! Following Jesus
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07-03-2014 11:50 AM  6 years ago
Ronald Thomas

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Gainesville, Fl, USA

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You must have some special batteries that none of us have access to because the laws of physics disagree with you.
It is all about setup and equipment choices. Bob, those numbers are made up to help you prove your point.
Team MikadoUSA 480XXTreme, 550SX, 600SX, 700XXTreme, 800XXTreme!!
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07-03-2014 12:11 PM  6 years ago
Retired2011

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Lee's Summit, MO

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Smoke and noise are a bonus.
Maybe for some...
The smoke doesn't bother me, but the noise is the main reason I DON'T like nitro!

Only one nitro ever comes to our field anymore, I really the guy, but I'm always happy when he is through with a flight.
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07-03-2014 12:42 PM  6 years ago
Rodney Kirstine

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Caldwell, ID - USA

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It is all about setup and equipment choices.
I'm sorry, but that's just not true relative to your statement that you have the same amount of power at the end of a flight that you have at the beginning. Having the same amount of power at the end of a flight as you have at the beginning is physically impossible with batteries and here's why.

Power=Current*Voltage or P=I*E. This isn't something that's subjective. This is a quantitative thing.

As an example, look at a 12S battery. Fully charged to 4.2V/cell it's going to be at 50.4V at the beginning of the flight. At the end of the run, let's say you discharge it to 3.77V/cell, it will be at 45.24V. If you could draw a maximum of 120A continuously throughout the flight you power would look like this:

Beginning: 50.4V * 120A = 6048W
End: 45.24 * 120A = 5429W

Just over a 10% drop in power over the course of the flight. Yes, that's not like 50%, or something but it is noticeably less power. As the electric helicopter's available power decreases, its mass remains the same. With a nitro helicopter the power stays constant and the mass decreases throughout the flight. Again, I'm not just making this stuff up. These are all measurable values.

I like both nitro and electric and these threads always turn into exactly the same pissing match. They both have their strengths and they both have their weaknesses. To me, they're both a lot of fun to fly for those different reasons.
Rodney
Team Synergy Field Rep, Rail Blades
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07-03-2014 05:49 PM  6 years ago
kthane

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Pensacola

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Smoke trail helps with orientation and not just a little. My 700n is much lighter than my 700e and I don't even use an rx pack. I've crashed both an the 700n takes it on the chin better. The 700e is cheaper to run and there is less wear and tear on the parts. I have both and foresee going all one way or another.
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07-03-2014 06:17 PM  6 years ago
Ronald Thomas

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Gainesville, Fl, USA

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Beginning: 50.4V * 120A = 6048W
End: 45.24 * 120A = 5429W
So if you only use 5000 watts, is the power the same at the beginning and end??? All in setup
Team MikadoUSA 480XXTreme, 550SX, 600SX, 700XXTreme, 800XXTreme!!
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07-03-2014 07:14 PM  6 years ago
BobOD

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New York- USA

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I don't see the issue about power in the beginning vs the end, but I do agree with 3dgimble and others that said it...if it's a e flying for 7 minutes, I'm pretty freaking bored. If you don't use it, obviously you're going to be happy.
I enjoy both...just that I can understand both.
I love my 425mm in electric and wouldn't part with it.
Team POP Secret
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07-03-2014 08:30 PM  6 years ago
Rodney Kirstine

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Caldwell, ID - USA

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So if you only use 5000 watts, is the power the same at the beginning and end??? All in setup
Okay Sparky, you got me.
Rodney
Team Synergy Field Rep, Rail Blades
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07-03-2014 08:48 PM  6 years ago
tadawson

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Lewisville, TX

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Not at the same throttle setting, no . . . your power vs pitch settings will change as power falls off. Yeah, you can come up on the throttle, but if pitch comes up too, headspeed will fall. With a gov, you can likely hold on longer, since it effectively decouples throttle and pitch.

- Tim
Friends don't let friends become electrotarded . . . .
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