Most beautifl and perfect stunt motor

[De Hill]

We used to run one at Ward Hallenberg's house the day before the Model Engine Collector's Association Collecto held in Tulsa.

It didn't have the power of a Fox .35. The rod assembly would break after 20 or so runs.

Wild Bill Netzeband did a writeup on them in the 1960's. (The rod broke on one of his)

[Robert Zambelli]

Thanks for the advice, De.
Mine is new, never mounted or run.
I guess it will get donated to the museum.

  Bob Z.

[proparc]

Although used by many R/C modelers in the USA, this little puppy is known a bit better on the other side of the Pond.

The Jen engines can be purchased with an OEM venturi.

I'm building a model around the Jen 57 currently. 

These were supposed to be very good.

[Gerald Arana]

From a box of engines I unpacked from around twenty years ago.

Anyone ever run one?      

   Bob Z.

You must have "Lots Money" to be able to "Donate" a $600 engine to a museum!

The last one that sold on Ebay went for $613..........Wish I'd bought a few of those when then first came out. Who knew?

Jerry

[Tom Niebuhr]

The best IC engine that I have ever seen is the RoJett .67    Absolutely purrs

[Mark Scarborough]

From a box of engines I unpacked from around twenty years ago.

Anyone ever run one?      

   Bob Z.

A dear friend of mine who flies RC has one in a large Citabria, I think his is a >90 size? it seems rather less than stellar power wise,, I would put it as a decent .60 size,, it seems to be getting a bit better with time, but still no powerhouse, but it fits really nicely in the cowling

[De Hill]

The Aero .35 was the only engine produced by this company. Your friend must have an engine produced by another manufacturer.

[Randy Cuberly]

From a box of engines I unpacked from around twenty years ago.

Anyone ever run one?   Huh  Huh 

   Bob Z.



Well, I was present when a friend ran one sometime in the early 70's I think in Denver Colorado.  The guy owned a small hobby shop in Englewood CO and I built several combat ships for him.  I was fresh out of the Army and looking for a job.

He ran the engine on a bench in the back of his shop.  The engine was brand new and was hard to start but eventually start it did and ran for about three minutes.  I was using about a 9-6 prop as I remember but not sure about that now.  It ran rather unspectacularly and I left shortly there after.

I actually saw one at the flying field in Miami Florida a couple of years in a CL Scale ship.  It was a mustang about the size of a Jetco Mustang but remember the guy seemingly got a little miffed when I asked him if it was a Jetco Mustang, and he said "No Way" and walked away from me.  He didn't run it or attempt to start it!

That's the sum of my experience with them.

Randy Cuberly

[Randy Cuberly]

The best IC engine that I have ever seen is the RoJett .67    Absolutely purrs

While I've only run mine on the bench so far, I have to agree Tom.  It runs very smooth but very different than the rest of the RO Jet Stunt engines I have.  A little more like a European engine.  Lower RPM Growl.  I'll get it in a plane soon if I can get finished with the Eye surgery and dental work and other medical crap that's been occupying all my time of late.

Randy Cuberly

[Elwyn Aud]

Video would be neater but this is all I got.

[Mark Scarborough]

The Aero .35 was the only engine produced by this company. Your friend must have an engine produced by another manufacturer.

You are most likely correct, it looks like the same layout, but its definetly NOT a .35

[RknRusty]

Video would be neater but this is all I got.

I've stared at the exploded view of this odd thing, trying to understand it, till my eyes hurt. But here's proof, it's about all I could find, but it does run, sort of.
Rusty

[De Hill]

Electric starters work on an Aero .35.

[Steve Helmick]

A dear friend of mine who flies RC has one in a large Citabria, I think his is a >90 size? it seems rather less than stellar power wise,, I would put it as a decent .60 size,, it seems to be getting a bit better with time, but still no powerhouse, but it fits really nicely in the cowling

That sounds like one of the (several different) British designs by the outfit that made the rotary cylinder/geared things from just maybe a decade or less ago. You may recall Mr. Powell using one of their engines for a short while. It puked, if I recall correctly. Maybe multiple times? They were called "4-cycle" engines. I didn't understand why they worked at all, but I do know that gears are a short-lived deal at very high rpms...and 10k is relatively high for gears. I haven't seen the ads for them lately, so expect they're defunct.  Steve   

[JoeJust]

Aeromodler has an in depth article this month on the Aero .35 and another in line engine.  Very interesting. I remember seeing The Aero .35 in a local hobby shop in 1950, but it cost nearly an average weeks pay, and was way out of my meager funds then.
Joe

[Chris McMillin]

Other than the ugly RC carb on it, I personally think the ST .51 was the most beautiful and perfect stunt motor made.  From the first time I saw one back in the early 80's, I wanted one.  Not to be of course because they just cost way too much for me.  Anyways, I recently saw a picture of one and it got me to thinking what others considered the most perfect stunt motor.

So fellow hobbyists....what do you think is the most beautiful and perfect stunt motor made?  And remember, there are two criteria....  
1.  beauty
2.  perfect stunt run.

That carb isn't as easy to set as an OS, but it's a beauty once you get it set. My son has one on an R/C 40 sized Spitfire, plenty of power on a 6 pound Scale ship so it's great for two types of model flying.
I have two Tom Lay 51's and hope to use them in the near future now that I'm in Stunt Heaven.
Chris...

[Brett Buck]

I am truly surprised no one mentioned the perfect stunt engine, the Aero Tiger  .36 by Randy Smith.. Consistant one flip starts, the power of a .46, light, strong, compact, and not bad looking. Fuel efficient as well. 

  One of the best 4-2 break engines ever made, and extremely useful.

     Brett

[Glenn (Gravitywell) Reach]

Hi Chris.  Your son has good taste in motors and airplanes!  He has my favourite two.....and both together!