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Home✈️Aircraft🚁HelicopterHelicopter Main Discussion › AMA Museum needs help
02-28-2012 09:51 PM  9 years ago
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gregee

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Muncie in usa

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AMA Museum needs help
WE received this helicopter years ago . No one knows what it is or where it came from.

PHOTO]/fastphoto/87935/nodoc446_1_12_02_03.jpg[/PHOTO]
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02-28-2012 10:16 PM  9 years ago
jbjones

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Columbus, Mississippi

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Wow...that's an old Russian MDS engine...J. B. Jones
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02-29-2012 12:42 AM  9 years ago
heli_headcase

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Hovering around Atlanta

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I've seen many heli's and this one beats me!
I agree the engine is Russian but can't say much about the rest.

The collective mixing system is a variation on what Miniature used on the X-Cell 50/60 series but have a V-Tail mixer to input the collective into the roll servo vs moving the entire roll servo. The ball links are of the very earliest design ever seen on a model heli (IE: Weak and fragile). The rotorhead has a Heim/Graupner quality to it.

Interesting machine. Would like to know more myself. Good luck!

HHC

So many heli's - too little time...
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02-29-2012 12:45 AM  9 years ago
povern

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LF, MN

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I have no idea, but I think the tail blades are on backwards. Screw It, I'm gonna fly
Synergy E5, E5s and Logo 800 xxtreme
vControl and Neo
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02-29-2012 12:54 AM  9 years ago
heli_headcase

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Hovering around Atlanta

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Tail Blades...
Forward or backward depends on the gearing of the tail drive and output shaft rotation - not what's considered as 'convention' based on the typical helicopter.

HHC

So many heli's - too little time...
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02-29-2012 01:16 AM  9 years ago
classic

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All over the place!

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I bet its a "Franken-heli".Which is worse, ignorance or apathy? I don't know and I don't care!
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02-29-2012 01:20 AM  9 years ago
heli_headcase

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Hovering around Atlanta

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I bet its a "Franken-heli".
Bet it's not...

HHC

So many heli's - too little time...
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02-29-2012 01:22 AM  9 years ago
Wave

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Illinois

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Yup, looks homemade.

Interesting blade grips.

The swash antirotation plate is also on the side...neat.
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02-29-2012 02:25 AM  9 years ago
4cyclic

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Montreal, Can. and northern Vermont

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Looks home made +1Life is meaningful flying helis.
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02-29-2012 07:39 AM  9 years ago
tasmanian devil

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DeSoto,Tx.

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+1,homemade vote here.I do'nt crash,I just rearrange parts.
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02-29-2012 04:46 PM  9 years ago
Crashr30

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DFW

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Soviet???
I wonder if this is not Russian in origin. The engine is truly Russian with the Russian script and the heli looks really well produced to be a home made project(for that time period). I do not see any real parts on the machine that I could say came off of another brand of machine. So I doubt that it is kit bashed. Back in that time period the Soviets were very competitive, so who knows. Besides, who would run a Russian engine in the US. I think only a Russian would run one in that time period. Not exactly known for their heli engines though they did make some strong control line engines.

I wonder if there is a Russian version of Runryder?
Team Synergy RC, Team Bobby Jacks, PowerMaster Fuels, Team Scorpion, YS Engines
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02-29-2012 06:08 PM  9 years ago
dkshema

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Cedar Rapids, IA

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Besides, who would run a Russian engine in the US.
MDS and Norvel are two russian engines that come to mind that were sold and "used" here. "Used" is in quotes as I don't believe they were used successfully to any degree.
-----
Dave

* Making the World Better -- One Helicopter at a time! *

Team Heliproz
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02-29-2012 06:17 PM  9 years ago
DarkSide41

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Sylacauga Alabama USA

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I would strap that thing down to a stand and see if it will hover " The biggest threat to our freedom is not from foreign terrorist , but domestic morons"
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02-29-2012 06:19 PM  9 years ago
MikeSherman

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Racine, WI

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I would strap that thing down to a stand and see if it will hover
...kinda hard if it's strapped down!

-Mike
Team QuickUK Pilot
Team Heliproz
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02-29-2012 06:30 PM  9 years ago
heli_headcase

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Hovering around Atlanta

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Slightly off topic here but I must address the comment of Russian engines "...I don't believe they were used successfully to any degree.."

This one below, the Norvel .25, enjoyed a very strong following in class B, open R/C combat back in the late 90's - early 2000's. I ran mine VERY hard on 30% and a home made tuned pipe with excellent results.

Additionally, the Norvel BigMig Sport .061 R/C was the engine of choice for the Lite-Machines LMH heli series, replacing the Cox .051 R/C. Here's a video of a .061 showing its reliable running/idling qualities:

Watch at YouTube

Just say'n...

HHC

So many heli's - too little time...
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02-29-2012 06:33 PM  9 years ago
RappyTappy

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Encinitas, CA

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Looking at the pictures, homemade machinist certainly comes to mind.Still buyin' and flyin' then crashing and cryin'
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02-29-2012 06:44 PM  9 years ago
whiskey

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Richmond,Va. USA

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Doesn't look homemade to me
Look at the head. I think it's a Russian kit.
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02-29-2012 06:45 PM  9 years ago
teamdavey2001

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Sunnyvale, California, USA

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The mechanical mixing system is identical in operation to an early Heim (but using the on servo mix rather than the rocking servo to introduce collective) as are the washout and pitch mixing on the blade grips. In fact some of the components look as if they might actually be Heim parts.

My vote is also for home brew with heavy Euro influence.
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02-29-2012 06:51 PM  9 years ago
Crashr30

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DFW

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The writing on the engine appears to be Russian text. I had both MDS and Norvel and do not recall any Russian text on the engines.

I raced 1/2A norvels and they were very successful. MDS was an OK sport engine. I know in combat and control line speed there were some very successful engines. Rare as they were.

To clarify my reference to running Russian engines was in reference to helicopters.

I think that heli is older than late 90's. I am thinking maybe early 90's.

I do not see any form of mechanical mix for the engine to tail so it used some form of gyro. Not sure when the first gyros came out.
Team Synergy RC, Team Bobby Jacks, PowerMaster Fuels, Team Scorpion, YS Engines
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02-29-2012 07:10 PM  9 years ago
jbjones

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Columbus, Mississippi

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Crashr30
The writing on the engine appears to be Russian text. I had both MDS and Norvel and do not recall any Russian text on the engines.
Yeah, those are the ones made for US release, I'm guessing. The engine pictured in the initial post clearly says MDS (in Cyrillic of course).
I can't make out what the lettering is below it, though.

I've seen other early MDS engines with Cyrillic lettering also.

-JB
J. B. Jones
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