Gaui NX4

[jkraft]

Originally Posted by akschu

This is the only nito heli that has tempted me, and as nice as it looks, I think I'll stick to electric.

I think the electric version can be just as light/powerful so I think the only advantage here is the ability to fly a lot without dealing with batteries and chargers.

As far as crash damage goes, I think it's a wash. With an electric you risk loosing a pack, with a nitro you loose it tossing the rx battery then beating itself to death.

All that said, that is by far the most impressive nitro I've seen in a while.

schu

Just use a return spring to keep the chicken dance away....easy mod and I don't know they don't do it from the factory on nitros.

[flyinghigh450]

Originally Posted by jkraft

Just use a return spring to keep the chicken dance away....easy mod and I don't know they don't do it from the factory on nitros.

+1 ...

[McKrackin]

Originally Posted by desertstalker

The weight of a .37 nitro engine? How much does a typical .30 heli weigh?

I can't speak to a .37 but a big electric motor,BEC and ESC for a 90 size heli is heavier than my OS91 engine and throttle servo...Just sayin.lol...

Nitro helis are typically lighter than their electric counterpart but do have a little less power....Most of the power advantage is surplus though in my opinion.

Originally Posted by irishmatt18

Yes, but you will get more flight out of one battery which cost nearly as much as one gallon of fuel which will last you what, ten flights???

Let the N vs E begin!!!

You'd really have to count the per minute cost to be fair.
The little NX4 is going to get a bunch of minutes out of a gallon of fuel...15 six minute flights to be modest....Less than 30 cents a minute.

A 500 size electric is going to be way cheaper...Waaay cheaper but that's really not the point of this heli.

Originally Posted by akschu

As far as crash damage goes, I think it's a wash. With an electric you risk loosing a pack, with a nitro you loose it tossing the rx battery then beating itself to death.


schu

A throttle return spring will absolutely prevent the chicken dance in that scenario. Every time.

BUT...you run the risk of losing a $45-$50 pipe in a crash as compared to about the same priced lipo.

But nitro helis don't burn up in a crash...ever.....An electric probably won't but it certainly can....That is a total loss...Throw the heli away and buy another one.


This is not a place for a N vs E debate though....The OP has nothing to do with electric whatsoever.

This WILL be my first Gaui heli.

[Slyster]

30 flights per gallon is what Bobby said.

[McKrackin]

Originally Posted by Slyster

30 flights per gallon is what Bobby said.

Then 15 cents a minute.

That is pushing up against the cost per minute of a 500 electric with Zippies

[WNCmotard]

Originally Posted by Slyster

30 flights per gallon is what Bobby said.

WHAT? That's roughly $1 a flight DO WANT!!

[flyinghigh450]

In the video of Bobby flying the NX4,he says 15 flights per gallon and the flight time in the video was 5:30 mins..

[Slyster]

OK.... but isn't that the same as a 600? I heard him say 30 for sure.. but maybe he was exaggerating with all the crowds and action I don't know.

[flyinghigh450]

Heres the video and im guessing on the 5:30 min flight time..When it started he was already flying so the person recording could of missed the first 30 secs to 1min..

[ame]http://www.youtube.com/watch?v=EGHvWEzPguQ&feature=my_favorites&list=FLZy tK5C1RaH-ldiRevP-hBw[/ame]

[akschu]

Originally Posted by McKrackin

This is not a place for a N vs E debate though....The OP has nothing to do with electric whatsoever.

This WILL be my first Gaui heli.

Yes, I know, I'm not trying to start the debate, it was meant as a complement to this heli, it's the first one that has tempted me, and perhaps it will be my only nitro.

As far as gaui goes, I have two of them... and like them way better than align. The only issue is that parts aren't as easy to get as align, but it isn't terrible either.

schu

[flyinghigh450]

Originally Posted by Slyster

OK.... but isn't that the same as a 600? I heard him say 30 for sure.. but maybe he was exaggerating with all the crowds and action I don't know.

Nope,he said 15 flights per gallon..

As for the 600N vs NX4 flights per gallon and flight time..If the NX4 gets 6mins of flight time which im guessing is close from the video,its the same flight time as a 600N with OS 55/YS 56 ..The NX4 gets 15 flights per gallon where the 600N gets 12 flights per gallon..

Even though flight time is close and the NX4 gets 3 more flights,its still well worth it and I want one..Well thats as long as crash cost is cheap..If its about the same as the 600N,wouldn't be worth it to me...Crash cost is what will make this heli sale because flight time and flights per gallon is about the same as the 600N....Wouldn't be worth the 3 extra flights if ya know what I mean?

[McKrackin]

Originally Posted by akschu

Yes, I know, I'm not trying to start the debate


schu

I know...I was talking to myself as much as anyone else.lol....

[McKrackin]

Originally Posted by flyinghigh450

.The NX4 gets 15 flights per gallon where the 600N gets 12 flights per gallon..

The Trex 600 has a 440cc fuel tank.
A gallon of fuel is 3785.4118 cc.

That is 8.6 tanks per gallon.

You'd get 12 flights per gallon if you stop with a 1/4 tank left every time.


I'm betting Bobby runs the NX4 pretty much dry.

[flyinghigh450]

Originally Posted by McKrackin

The Trex 600 has a 440cc fuel tank.
A gallon of fuel is 3785.4118 cc.

That is 8.6 tanks per gallon.

You'd get 12 flights per gallon if you stop with a 1/4 tank left every time.


I'm betting Bobby runs the NX4 pretty much dry.

I fly my 600N about everyday..When ya fly like some of us do and keep the carb wide open,fuel gets sucked down fast..Flying style effects flight time alot..

[McKrackin]

Originally Posted by flyinghigh450

I fly my 600N about everyday..When ya fly like some of us do and keep the carb wide open,fuel gets sucked down fast..Flying style effects flight time alot..

What does flight time have to do with how many times you can fill the tank?
If you fill it up and then dump it out on the ground,you can do that 8.6 times.

You saying you fly better than me or more than me so your tank holds less fuel?

I don't get it.

[flyinghigh450]

Originally Posted by McKrackin

What does that have to do with how many times you can fill the tank?
If you fill it up and then dump it out on the ground,you can do that 8.6 times.

You saying you fly better than me or more than me so your tank holds less fuel?

I don't get it.

I fly my heli pretty much daily and ive used a black marker to mark each flight on the bottle..I get 11 3/4 flights out of a gallon and I run it pretty much dry...

What I was saying is the harder you fly,the more fuel you'll use per flight so the flight time gos down....

[McKrackin]

Originally Posted by flyinghigh450

I fly my heli pretty much daily and ive used a black marker to mark each flight on the bottle..I get 11 3/4 flights out of a gallon and I run it pretty much dry...

What I was saying is the harder you fly,the more fuel you'll use per flight so the flight time gos down....

Gotcha but I never mentioned flight times...Not interested in that.

I wanted to know how you fill a 440cc tank 12 times from a 3785cc container.
That's 315cc per fill up which is only 3/4 of a tank.

Or you could be not quite topping it off and leaving a little after the flight...

I do that myself and get 8 tanks with my 700.
I doubt any of us cram the tank completely full...But I do run it dry a lot.lol....


If they're using simple math to say how many flights a gallon the NX4 gets....it may just get 20-25 flights per gallon in real world applications.

Just like you getting 12 tanks from a 8 tank container.

[flyinghigh450]

Originally Posted by McKrackin

Gotcha but I never mentioned flight times...Not interested in that.

I wanted to know how you fill a 440cc tank 12 times from a 3785cc container.
That's 315cc per fill up which is only 3/4 of a tank.

Or you could be not quite topping it off and leaving a little after the flight...

I do that myself and get 8 tanks with my 700.
I doubt any of us cram the tank completely full...But I do run it dry a lot.lol....


If they're using simple math to say how many flights a gallon the NX4 gets....it may just get 20-25 flights per gallon in real world applications.

Just like you getting 12 tanks from a 8 tank container.

I top all my nitros off all the time,sometimes fuel will drip out the vent line as im running a YS...
The 700N which has a MUCH bigger tank than the 600N gets about 8 flights per gallon so clearly the 600N which has a much smaller tank gets more than the 8 flights per gallon like you said.I counted flights per gallon may times and its 11 3/4 flight per gallon on the 600N.I also have a few videos showing the fuel tank full and had to auto right at 6mins because it ran out of fuel..Sometimes its a little more than 6mins if im not dogging it..

As for the NX4,Bobby himself said in the video it gets 15 flights per gallon.Its really hard to say but all we have for now is his work which was very clear in his video..It might only be a OS 37 but once you get to where ya can pretty much keep the carb on the high needle,gas mileage gos down fast..Could have a tank close to the size of some of the 50/600 size helis but a little smaller...This is going to be a sweet heli,I just hope we can say the same about the cost of crash parts..

[McKrackin]

I'm just saying the MATH says a 600 gets 8.6 tanks per gallon.
It obviously gets more like you said.

If the MATH says 15 for the NX4...it might be a good bit more....Hope so

Crash costs should be pretty cheap....Again...Hope so.

[desertstalker]

Originally Posted by McKrackin

I can't speak to a .37 but a big electric motor,BEC and ESC for a 90 size heli is heavier than my OS91 engine and throttle servo...Just sayin.lol...

Nitro helis are typically lighter than their electric counterpart but do have a little less power....Most of the power advantage is surplus though in my opinion.

IC engines dont scale down well though. The Motor + ESC + Lipo from my Protos stretch weigh 700g. The OS 37 weighs 300g by itself, once you add the pipe and fuel there is not going to be anything much between N and E (1/15th of a Gal of fuel (~250mL) is going to weigh something like 200g).

The weight equation does not look so hot, specially since Gaui say fuelled weight is 1.8kg.

Now, power. The OS 37 is rated at 1.4hp, an align 500MX is rated for 1600W (2.15hp) with a peak output of 2300W (3.1hp). So a Trex 500 weighs about the same (1.8kg) and has 150% of the power (ignoring peak numbers since nitro folks hate them) and is known as a bit of a pig (compared to say a protos at ~1.5kg) handling wise and many upgrade the motor.

So you can see where my comments that it will fly "heavy" come from... If it is geared for high HS (~3000rpm) it would probably be fun to smack around though.