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HelicopterEngines Plugs Mufflers Fuel › Engine Lovers Thread
10-22-2015 09:10 PM  26 months agoPost 21
Grimracer

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Eau Claire WI

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I need to get in on this!

Nice to see your OB Mr Jones!

Grim

Michael J Zaborowski

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10-23-2015 12:33 AM  26 months agoPost 22
jbjones

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Columbus, Mississippi

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Grimracer: I need to get in on this!
Heck yeah, Grim, let's see those CMB's and other jewels we all know you're hoarding up there!

Yeah, I couldn't resist showing it off.

-JB

J. B. Jones

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11-01-2015 01:29 PM  25 months agoPost 23
Grimracer

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Eau Claire WI

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Lets see if I can find anything in my pictures..

Here are a few.. Sorry for the poor pic quality.. the cut-a-way is a OS 240 twin.

Michael J Zaborowski

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11-02-2015 04:21 AM  25 months agoPost 24
xcellgasman101

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WOODWARD, OKLA....

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Now there's a man that Loves his hobby!!! Nice collection!! XGM/VGM

John Crotts
www.soonerhelicamproductions.com

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11-02-2015 12:42 PM  25 months agoPost 25
Grimracer

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Eau Claire WI

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I just finished this one. Fox 15 runs like a champ. Plane is a Walker FireBrat.

Michael J Zaborowski

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11-02-2015 05:58 PM  25 months agoPost 26
wjvail

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Meridian, Mississippi

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Plane is a Walker FireBrat.
Did you build from plans or does someone make a kit?

Bill

"Well, Nothing bad can happen now."

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11-02-2015 05:59 PM  25 months agoPost 27
wjvail

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Meridian, Mississippi

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the cut-a-way is a OS 240 twin.
Where on God's green earth did you get a cut-a-way of a OS twin? Who has the money to cut into an engine that pricey?

"Well, Nothing bad can happen now."

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11-05-2015 02:16 AM  25 months agoPost 28
Grimracer

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Eau Claire WI

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The plane was a hand me down from my Uncle Buck (Yep.. had a uncle Buck)..

The motor was one of OSs show motors. I have "connections"..lol

Grim

Michael J Zaborowski

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02-21-2016 06:22 PM  22 months agoPost 29
wjvail

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Meridian, Mississippi

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It's been a while since I posted to this thread. Here are a few pictures of a .90 class engine I recently picked up for $58.

Here are a few (poor) pictures of my ASP engine. I would describe the engine as “good enough”.

A few notes:

-- Nothing is finished particularly well but everything seems to be functional. Even if it is not pretty, it appears well manufactured.

-- Notice the face of the exhaust port is not machined. Nor are the undersides of the mounting lugs. The neck of the carburetor is still a bead blast finish and un-machined. IF these surfaces aren’t flat there could be trouble. I have no reason to believe they aren’t but it would be nice if they were milled to remove doubt.

-- The head appears to be machined from a piece of billet and anodized black. It is big, six bolt, one piece, and takes a standard 1/4 x 32 plug. It appears to be very functional but not pretty.

-- There are small nicks on various parts where they seem to have been dropped in a bin with other pieces after production.

-- It does come with a woodruff key and prop drive washer but the shaft is short enough that getting a prop, washer and nut on the front might be difficult. I don’t know how it would do as an airplane engine. Bench testing might be tough.

-- The carburetor is well made but extremely simple. It is a ‘70s vintage two needle carb. There is, of course, the standard high-speed and low speed needle. Mid-range is dependent on a cam action that moves the carb barrel in/out as it is rotated. That makes the taper of the main needle and the milling of the barrel slot that moves the barrel in/out critical. Done correctly this can work well. Done poorly and there is NO adjustment (short of grinding the HS need to a new profile). There is a surprisingly pretty and thoughtful throttle arm extension.

-- My biggest fear was that there were some non-standard dimensions on the engine. I was afraid the mounting dimensions for the case or muffler were incompatible with typical kits and mufflers. I didn’t get all the measuring tools out but it appears the engine is completely compatible with the OS I pulled from storage for comparison. It should just drop right in.

The real test is how it runs. Outwardly it looks good but if the internals aren’t right, it’s just a paper weight. A lot of times when you buy a helicopter engine, you’re really buying a helicopter carburetor with an engine attached. This could turn out to be a great engine that won’t function without replacing the carb…. Or it could be fine just the way it is.

For me, the value of this engine is to suggest to others what it might really cost to produce and sell a .91 class engine.

Did I to mention this thing was $58 dollars?

"Well, Nothing bad can happen now."

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02-21-2016 06:43 PM  22 months agoPost 30
PaulBowen

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Victoria, Australia.

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Interestingly made in the same country as the OS 37SZ-H I recently bought. Not quite what I had in mind when choosing OS.

Futaba T18SZ, JR Propo XG14, Hirobo fanatic!

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01-19-2017 04:44 PM  10 months agoPost 31
wjvail

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Meridian, Mississippi

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All right. It's chucking down rain today and I'm stuck inside. Since I can't go outside and fly I thought I'd play with my camera equipment and take some pictures of a few engines I've got sitting on my desk.

This is an older cross scavenged Super Tigre .71. I've collected a few engines over the years simply because they didn't fit into the standard description of - intake on the front, exhaust on the side.

When I was growing up the Local Hobby Shop had an entire showcase of engines to choose from. Two things: One, I couldn't afford any of them and two, there so many more choices then.

Some thoughts on this engine:

-- I've always been impressed with the fantastic thin-walled aluminium castings and cases of of Super Tigre engines.

-- Super Tigre made their name for a number of different reasons. One of those is their fantastic two needle carburetors. These carbs made a name for themselves at a time with mufflers were rare and carburetors were very poorly understood. This is NOT one of ST's best carbs.

-- The exhaust baffle is missing on this engine. If anyone has one, please PM me. I'd love to have a box too...

Just thought I'd share.

"Well, Nothing bad can happen now."

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HelicopterEngines Plugs Mufflers Fuel › Engine Lovers Thread
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