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HomeScaleAircraftHelicopterScale Model RC Helicopters › Graupner NH 90 electrified-Finished
03-13-2010 11:49 AM  8 years agoPost 1
Viggen65

rrVeteran

Gothenburgh, Sweden

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Hello Gentlemen
Thought I share my latest winterproject with you, last years autum
I got my hands on a second hand Graupner Nh 90 fuse adapted for a turbine mechanic,fuse itself had been painted and some stuff was already installed like navlights and a upgraded metalgeared taildrive, also the taildriveshaft was replaced to the Vario one...so i had this big empty fuse and wanted go electric, after gathering as much info as possibble I decieded to go for a Skyfox mechanic, talked with Joe at Vario Usa and bought a nice specialadapted motormount for the skyfox, reason for choose of the skyfox was that I think that Vario had the most userfriendly way to get parts, not the cheapest one but i think when coming down to get scaleparts quickly they are outstanding with theirs webbased order system.
I have both the Vario skyfox 2 blade head and the Graupner 4 blade one, bought the graupner 825 blades and initially gone do the hovertest with the skyfox 2 blade head.

Mine NH 90 setup looks like this

Graupner NH 90 turbine version
Skyfox mechanics with gearing 10.55
Graupner 825 blades semisymetrical
Vario taildrive system with 4 bladed tail
Futaba servo setup on the mechanic and tail(8 kilos on tail,10kilos on cyclic)
Futaba Gy 502
Bms servos for the retracts
Scorpion 4035-500kv motor
Turnigy Monster 200A esc (overkilled, but was only in stock )
Turnigy 10s 5800 wired in serie
cockpit with night lights and pilots,weather radar and gps in the panel with ligths..etc
servoslower for realistic retractcontrol

I have the skookum 360 that is going to be installed with 4 bladed head but at this point I havent decieded if to use a stabilizationsystem or not, If anyone has some good initial flying tip i appreciated it, this is the largest heli I ever built and i think the behavior is going to be like flyin a bus?

Please visit link below for some pics
http://www.rcheli.se/phpBB220/viewtopic.php?t=28535

Best R
Jack

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03-13-2010 07:28 PM  8 years agoPost 2
Chapter

rrApprentice

Savannah, usa

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Very nice Jack.
Great job!

Chapter

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03-13-2010 09:10 PM  8 years agoPost 3
marc28

rrVeteran

new york

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very nice

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03-13-2010 11:08 PM  8 years agoPost 4
geekdisk

rrNovice

independence, ky USA

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Can't wait to see this in the air
The NH90 is one of my next project heli's, I'm going to use a Vario Benzine mechanic though.

Will you post some video's of it flying? Heli-porn...

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03-14-2010 03:55 AM  8 years agoPost 5
Hoverup

rrElite Veteran

Golden Gulf Coast - USA

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Absolutely brilliant Jack. Thanks for sharing the picks. That is one big, bad heli.

Cheers - Boyd
AMA 80393
IRCHA 3355
LSF 853
Major USAF
Retired

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03-14-2010 07:27 AM  8 years agoPost 6
Copter Doctor

rrProfessor

Enterprise/ft.rucker ,al- home of army aviation

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that is a nice machine and will sound awsome in the air. be sure t get some vids. thanks for sharing Jack.

drive a rotary, fly a rotorcraft

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03-14-2010 10:09 AM  8 years agoPost 7
Viggen65

rrVeteran

Gothenburgh, Sweden

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Many,many thanks for you comments, a video is absolutly gone be taken and shared with you all, just waiting for a bit warmer weather, this heli has turned out so nicely and I really looking to fly it and listen to sound.

BR
Jack

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03-15-2010 08:14 AM  8 years agoPost 8
WIRLYBIRD

rrVeteran

CAPE TOWN / SOUTH AFRICA.

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Beautiful job , well done.
Dave.

WHAT GOES UP MUST SURELY COME DOWN.

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05-18-2010 07:51 PM  8 years agoPost 9
Viggen65

rrVeteran

Gothenburgh, Sweden

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Finally Today, after some issues with the tail drive I managed to get mine 90 airborne, whaw... , what a great heli and sound, unfortunally I had mine iphone with me hoping someone would be around
on the field to take a vid but not.....im really impressed of
the sound the 825 long blades produce, havent yet tached the HS but would guess around 1100 with a throttle curve att 77%, especially the sound when the blades are producing initial lift off from the ground is so nice, gone post a vid in the near future

/Jack

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05-20-2010 11:31 PM  8 years agoPost 10
Hoverup

rrElite Veteran

Golden Gulf Coast - USA

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Looking forward to it Jack.

Cheers - Boyd
AMA 80393
IRCHA 3355
LSF 853
Major USAF
Retired

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05-24-2010 12:32 PM  8 years agoPost 11
Totto

rrApprentice

Norway

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Hello Jack,

Congrats with the buildup of the NH-90 on electric setup !
Hope you post a video soon !


Best regards
Totto

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05-25-2010 09:15 PM  8 years agoPost 12
Viggen65

rrVeteran

Gothenburgh, Sweden

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Thanks Totto, you can count on that...

Cheers
Jack

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HomeScaleAircraftHelicopterScale Model RC Helicopters › Graupner NH 90 electrified-Finished
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