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HomeScaleAircraftHelicopterScale Model RC Helicopters › Video - Graupner NH-90 Turbine first hovertest
03-08-2008 06:29 PM  10 years agoPost 1
Totto

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Norway

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Hello !

Finally i had my NH-90 turbine airborne for the first time today.
The model needs quite much adjustments (specially on the tail) on the radio side, but the turbine works just great.

It has 4 main rotorblades and 4 tail rotor blades. I use OF 800 mm blades but the rest are Graupner. I use only a Futaba 401 gyro with S9254 dig servo on the tail. The turbine is a JetCat PHT-3

Some video / pic’s here: http://www.tottoshobby.net


Best regards
Totto

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03-08-2008 09:49 PM  10 years agoPost 2
WIRLYBIRD

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CAPE TOWN / SOUTH AFRICA.

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Well done now enjoy the flying!!
Dave.

WHAT GOES UP MUST SURELY COME DOWN.

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03-09-2008 12:21 AM  10 years agoPost 3
lrogers

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Mobile, Al

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Ahh, Totto, I could see right away what the problem was. You were doing a first test flight with out snow on the ground!

That is going to be a super model when you get it completed. After seeing that engine start, I understande why you have a rotor brake installed! Were you using the kero start?

I can't wait to see the next test flight.

Larry Rogers - R/C Helicopter Pilot

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03-09-2008 12:28 AM  10 years agoPost 4
ChopperEddie

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Pennsylvania, USA!

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My heart was in my throat a couple times during that video!

It's going to be an awesome bird when you get her dialed in. Keep us posted!

-- Runway? We don't need no stinking runway! --

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03-09-2008 10:26 AM  10 years agoPost 5
Totto

rrApprentice

Norway

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Hi and thank you guys,

Dave: Well I really have to do some adjustments before I can start flying it. The tail was a mess. Those four blades back there gets it really powerfull. The turbine itself works very good.

Larry: You are absolute right. Now snow. That must be the reason why it behaved the way it did. As I say it was a mess back there. I have to use propane start until further because there is not the clearance it should have to enter the keroplug. The propane is also ok actually. Hope youre doing ok on your Sea King project !

ChopperEddie: Yes, you are right… it was a bumpy ride and the tail was terrible.


Best regards
Totto

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03-09-2008 08:40 PM  10 years agoPost 6
Helihover

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Norway

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Congrats!

Had my heart jump a few times - but it will be a nice machine once sorted.

Seems like you have a bit to little negative pitch - my PowerCat is behaving a bit like yours when I have dialled in too little negative.

Talks!

Helihover, Vestby

Tried planks, but after all, wood is best on the bonfire.

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03-09-2008 09:22 PM  10 years agoPost 7
Totto

rrApprentice

Norway

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Hello Helihover and thank you !

Yepp, it sure was a bumpy ride. As mentioned the tail was the absolute worst but I need to go through some settings incl collective elev/ail and pitch settings + of course the tail.
This thing can’t fly like this, but i think it could be good :-)

Ja, Talks !


Best regards
Totto

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