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General control line discussion => Open Forum => Topic started by: Robert Zambelli on July 23, 2014, 02:51:59 PM

Title: ODD ENGINE NUMBER 2
Post by: Robert Zambelli on July 23, 2014, 02:51:59 PM: I remember this one from quite a while back.

Again, from the junk box - AERO 35.

It looks new, never run. Anyone know anything about it?

Looks like it might be nice for a 35 size plane.

Bob Z.
Title: Re: ODD ENGINE NUMBER 2
Post by: Steve Helmick on July 23, 2014, 03:03:26 PM: Not very powerful. The crank/rod are a sort of cam doodad. And the throttle is missing! Made in the '70's, I think. Z@@ZZZ Steve
Title: Re: ODD ENGINE NUMBER 2
Post by: Tim Wescott on July 23, 2014, 03:14:59 PM: There's some sort of wacky swashplate to transfer the circular shaft motion to the piston. I've never seen one in person, much less running.

The designer thought it was fabulous.
Title: Re: ODD ENGINE NUMBER 2
Post by: De Hill on July 23, 2014, 06:17:28 PM: Hi Bob,

It's worth a lot of money to a collector.
Title: Re: ODD ENGINE NUMBER 2
Post by: Brian Hampton on July 23, 2014, 06:31:46 PM: There are 3 engine test reports on the Aero in my collection of engine tests at http://sceptreflight.net/Model%20Engine%20Tests/Index.html
Title: Re: ODD ENGINE NUMBER 2
Post by: De Hill on July 23, 2014, 06:41:18 PM: Wild Bill Netzeband tested the Aero .35 in MAN a long time ago. His engine broke a rod after just a few runs.
The rod had a built in stress riser and failed there.
Title: Re: ODD ENGINE NUMBER 2
Post by: Joe Just on July 23, 2014, 08:26:46 PM: In the early 50's, late 40's I believe these were made in Buffalo. At the time O&R .23's were selling for about $11 in my local hobby shop, the Aero was selling for $35 or just about a full weeks wages in my Upstate, NY town. At the same rate, if thy were built today I think the hobby shop would have to as at least $450. BTW, one of our local guys had one and complained that with all the moving parts it was always over heating and didn't run well at all. With all that being said, I will take it from you for $35, OK?
Joe
Title: Re: ODD ENGINE NUMBER 2
Post by: Air Ministry . on July 24, 2014, 02:27:05 AM: (http://sceptreflight.net/Model%20Engine%20Tests/Aero%2035-4.jpg)

millions of pictures , here :
https://www.google.com/search?site=&tbm=isch&source=hp&biw=1920&bih=963&q=aero+35+engine&oq=aero+35+engine&gs_l=img.12..0i24.1800.7270.0.9292.14.8.0.6.6.0.305.1866.2-7j1.8.0....0...1ac.1.49.img..0.14.1871.ZWdj3jbXuJE&surl=1&gws_rd=ssl#imgdii=_

( aero 35 engine , on Google Pictures )

(https://encrypted-tbn3.gstatic.com/images?q=tbn:ANd9GcSh3V4lr-mMTjGa1i2gkaAlpy1zB91FL9M1jYCHefh_7Ccqhyg9:modelenginenews.org/cardfile/images/aero35_parts.jpg)

looks like someones bent the conrod . n~ ;D
Title: Re: ODD ENGINE NUMBER 2
Post by: john e. holliday on July 24, 2014, 09:55:39 AM: If I remember right these were designed for scale type airplanes that did not require a lot of rpm. I always wanted one but thought it too pricy.
Title: Re: ODD ENGINE NUMBER 2
Post by: Garf on July 24, 2014, 10:42:10 AM: None of them lasted very long.
Title: Re: ODD ENGINE NUMBER 2
Post by: Greg McCoy on July 25, 2014, 05:10:46 PM: Was there a Russian in-line engine built for a scale turbo prop, that used bevel gears?
Title: Re: ODD ENGINE NUMBER 2
Post by: Elwyn Aud on July 25, 2014, 05:29:55 PM: http://stunthanger.com/smf/gallery/133_01_03_08_7_54_49.JPG
From one of the open houses at Ward Hallenburg's some years back.
Title: Re: ODD ENGINE NUMBER 2
Post by: Brian Hampton on July 25, 2014, 08:08:14 PM: Quote from: Greg McCoy on July 25, 2014, 05:10:46 PM
Was there a Russian in-line engine built for a scale turbo prop, that used bevel gears?
Most likely this one.
http://sceptreflight.net/Model%20Engine%20Tests/Krasnorutskij%2060.html
Title: Re: ODD ENGINE NUMBER 2
Post by: Ron Cribbs on July 25, 2014, 09:55:40 PM: I just read the review for this engine in an old issue of flying models. The big advantage was the streamlining effect due to it being able to fit it the cowl.

The problem with it is what others above mentioned. I think it's a beautiful engine and wish it would have had the bugs worked out.

I would love to own one, if not just to run it once or twice. Unfortunately, as also mentioned above they are worth a lot of money to a collector. So for the average joe, pretty much unobtainable.

Cool stuff! Thanks for posting the picture!

Ron
Title: Re: ODD ENGINE NUMBER 2
Post by: Robert Zambelli on July 28, 2014, 09:43:43 PM: Hi, Guys - thanks for all the good feedback.

It appears new, never run. I'll probably do a brief test run and then get rid of the engine.
Maybe do a short article in Control Line World on odd engines!.

Bob Z.
Title: Re: ODD ENGINE NUMBER 2
Post by: Ara Dedekian on July 30, 2014, 02:04:48 PM: Bob

Six or eight years ago, a friend (a model engine dealer) and I were registering our swap shop items at the WRAM show. The next person waiting to process his items came up and put three 1st generation 4-Strokes and an Aero 35 on the table. My friend offered the person $100 for the lot prior to his registering them, and despite the protests of the staff member processing the items, the offer was accepted.

He sold the Aero 35 the next day, he told me, for $400. And it had been bench run.
Are you sure you want to test run it?

Ara
Title: Re: ODD ENGINE NUMBER 2
Post by: Randy Ryan on July 31, 2014, 09:56:05 AM: While down a bit on power and prone to short life, these engines were smooth as silk runners due to the north south direction of piston travel. Tim Danels of the Engine Collectors Journal did a test including flying and says it was very easy to handle and no vibes. They were pricey for sure, how I wish I would have bought a couple after the company shut down and they were on the market just to get rid of them.