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Home✈️Aircraft🚁HelicopterAntiques or Out of Business › GMP Viper finished!
04-25-2009 05:42 AM  10 years ago
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marcw

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Southern California

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GMP Viper finished!

What a project! The rarest of the rare....the mythical GMP Viper!

Website write-up here:

http://www.1017.org/cricket/viper.html

I didnt bother with a video, because we mustly just hovered it around, afraid to hurt it!

I tried to contact the fellow who im told is the owner of the other Viper, but had no success, so again, if anyone out there has any information on the Viper we dont have already, or any corrections to our reserach, please drop me a line.

Enjoy!

Marc
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04-25-2009 02:19 PM  10 years ago
rcpilotmike

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GroveCity, Ohio, USA

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That is awsome. I remember looking at the Viper @ Toledo show, I think in 1990, maybe 91. It was right after GMP split from Hirobo because they were pushing the Made in USA products. To bad the Viper never made it to the market, it would have been the best 30 size available.
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04-25-2009 06:03 PM  10 years ago
CoastalTom

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Foley, AL (7 miles N of Gulf Shores/Orange Beach)

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Great review Marc!

That brought back memories!
Tommy Patterson - Gulf Coast Aerials
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04-25-2009 10:57 PM  10 years ago
tutelar-rc

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Nobleton, Ontario - Canada

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Nice write up!

Your Cricket website keeps getting better and better...
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04-26-2009 05:24 AM  10 years ago
jczankl

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Apache Junction, AZ 85120

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Hey Mark, Very COOL!!! Glad to see this completed. VERY NICE WRITE UP!!!!!
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04-28-2009 03:04 AM  10 years ago
marcw

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Southern California

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Thanks fellas for the compliments…it was a really fun and interesting restoration project to say the least…and to be one of the handful of people ever to fly one is pretty neat too!

So now for the record, let it be known that the Viper is not a myth! It actually exists!!

Marc
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05-18-2009 05:05 AM  10 years ago
Tripledeucer

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College Place, WA.

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1990 Toledo
Here is a shot of the new Viper for 1990 from GMP.

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05-18-2009 05:13 AM  10 years ago
Tripledeucer

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College Place, WA.

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Viper
One more.

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05-18-2009 03:29 PM  10 years ago
marcw

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Southern California

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Wow! Those are the best, most detailed contemporary pics of the Viper ive seen!

There's a front plate on the frame (see where the drive belt off the clutch goes back through) that mine does not have.

It would be great to get a copy of that Viper flyer that was sitting on the table next to it!

Very cool pictures! Ive PM'ed you to ask about putting them on the website.

Thanks for sharing!!

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05-19-2009 04:40 PM  10 years ago
jczankl

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Apache Junction, AZ 85120

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Hey Marc What blades did you use?
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05-19-2009 05:21 PM  10 years ago
marcw

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Southern California

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JC: I used SAB 425 carbons off my trex 500. IIRC, I had to file off 1/2mm off the top and 1/2mm off the bottom of the roots to make them fit the Viper's tiny blade grips. Apparently, GMP never really decided on an official blade specification for the Viper, and had been experimenting with different sizes still when the end came. The 425's look about right when comparing to the vintage photos of the Viper.
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05-20-2009 03:30 PM  10 years ago
TJK1

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Harrisburg, PA

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Marc,

I have a Mini-Elite rotor head that was made for the Concept 30 by Tech Specialties. Do you know if that head is based on the same design as that on your Viper?

Tom
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05-20-2009 03:35 PM  10 years ago
marcw

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Southern California

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Tom: I believe so. Take a look at the website....we have the only known mechanical drawings of the GMP mini elite head posted there. Compare that to yours and post your fidings...id be very interested to know myself.

Marc
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Home✈️Aircraft🚁HelicopterAntiques or Out of Business › GMP Viper finished!
07-04-2009 07:50 PM  10 years ago
0 •• Post 14 ••
LEGEND 60

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CA ,USA

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VIPER
MARC
That is a amazing piece of history you got there!!does it fly as smooth as it looks ??? is tech specialties still in biz???
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07-04-2009 08:43 PM  10 years ago
marcw

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Southern California

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Hey Daniel:

It flies good, but for .30 sized machines, im spoiled on my Scorpion powered T-Rex 500 with V-Bar 4.0, so going from that to the Viper makes the Viper feel like a pig in comparison im sorry to say. However, when you consider what else was around in 1990, the Viper would have unquestionably been the top of the line .30 machine, had it been produced. Let's not forget this was a full 8 years before the Raptor 30 was introduced. The only thing that could touch it in it’s day were the top .60 size machines. It’s still a lot of fun to fly, and let me tell you how much attention it got from the old time heli flyers last time I brought it to the field! Only problem is I haven’t flown it since the restoration and web story….im too chicken to fly it anymore!

Marc
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07-04-2009 11:12 PM  10 years ago
LEGEND 60

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CA ,USA

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VIPER'D
MARC
I GOT TO TELL YOU THAT YOU DID AMAZING WORK WITH THAT GMP PROTYPE VIPER, CONSIDERING YOU HAD NO INSTRUCTIONS,NO BOOKLETS,AND NOFACTORY SUPPORT!!YOU HAD ONLY THAT DRAWING TO WORK WITH!!!OUTSTANDING MODS AND UPRADES MARC!!!I'M NOT SURE WHAT SIZE ENGINE YOU HAVE IN IT BUT WITH A OS .37 AND PIPE I'M SURE IT CAN HOLD ITS OWN AGAINST OTHER HELIS IN ITS CLASS ,BUT THEN AGAIN IF THERE WAS UPGRADES FOR IT OUT THERE AND YOU HAD ANOTHER VIPER THAT YOU MODIFY AND UPGRADE AND TEASTAND FLY WITH NO WORRIES..IT WOULD BE A STORY IN ITSELF...EITHER WAY...ITS A PIECE OF HELI HISTORY IN ITS OWN EXISTENCE AND ITS YOURS NOW!!CONGRATS TO YOU MARC!!A TRUE A GMP PHOENIX!!!YOU DID GIVE IT A WHIRL !!
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