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Post  EivindB Sun Apr 19, 2020 5:03 am

someone who recognizes this engine. there is no logo on it
What Brand? 17688810
What Brand? Cff01a10
What Brand? E8923e10
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Post  Oldenginerod Sun Apr 19, 2020 6:31 am

Fox. (That's all I got)
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Post  Ken Cook Sun Apr 19, 2020 7:39 am

It's a Schnuerle ported Fox .15 plain bearing. These engines while not rare, they're not commonly found either. This engine was made for a event that required plain bushing engines. The Fox .15 ball bearing version is much more common.  This engine in ball bearing form is pretty hot. Iron piston engine which needs a bit more castor over standard r/c fuel. Likes props from 7x4-7x6. The muffler is very restrictive and can cause overheating when pushed. If your looking to run the engine, remove the backplate and use caution not to tear the gasket. I do this by liberally letting oil soak around the perimeter and heat it a bit. Once off, insure that the rod is moving free back and forth on the wrist pin. No need to take this engine apart and I discourage that due to that nothing indexes the cylinder liner fit. Get behind the rod using a allen key and make certain it's sliding back and forth on the top end. Use heat, oil, whatever it takes to get it moving freely.  This engine uses wrist pin clips to hold the wrist pin into the piston. If the wrist pin and top of rod joint aren't freed up, the clips can come out while running. This can be instantly catastrophic.  I also caution that you don't lose the screws. Some of the screws in that engine are 3-48 screws which are not commonly found. Duke had surplus screws from the military and used this thread extensively throughout the years.
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Post  rsv1cox Sun Apr 19, 2020 8:40 am

Ken, you continue to amaze me. Is there anything about any glow engine that you don't know something about...…………

Bob
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Post  akjgardner Sun Apr 19, 2020 9:44 am

@rsv1cox wrote:Ken, you continue to amaze me.  Is there anything about any glow engine that you don't know something about...…………

Bob
Bob , I was thinking the exact same thing This Site Rocks!
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Post  EivindB Sun Apr 19, 2020 10:56 am

thanks for very good information. since you have a lot of knowledge, can you tell me something about this engine?What Brand? D492ae10
What Brand? 6e257210
What Brand? Ea77a210
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Post  Ken Cook Sun Apr 19, 2020 4:44 pm

The engine sure appears to be a late 60's early seventies Russian variant. Most Russian engines however have names on them generally named after animals. I see no markings of any type. I'm assuming 2.5 (.15) displacement. Most of the rear exhaust engines out of Russia were made by Ukctam. Have you run this engine? I see the venturi and there's additional holes in the case which tells me this venturi needle setup is possibly not stock. Seeing the screws also tells me a little about the engine in that the Russians were very good at copying other engines of the period. The slotted screws were typical of the Super Tigers in the 60's. A very interesting piece , I love stuff like this .
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Post  Mike1484 Sun Apr 19, 2020 6:25 pm

I would say it is a 1963 MVVS .15 or.2.5 cc engine . Used for speed and free flight .

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Post  ffkiwi Sun Apr 19, 2020 6:44 pm

@Mike1484 wrote:I would say it is a 1963 MVVS .15 or.2.5 cc engine . Used for speed and free flight .

Mike1484

Yes MVVS-definitely not Russian....and the venturi is not original. looks to be contemporary with the MVVS 1963 TRS diesel-but I'm unsure of what model designator was appended to the glow version...

ChrisM
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Post  Ken Cook Sun Apr 19, 2020 7:02 pm

I have a MVVS .29 from this period which actually looks identical to a Dooling .29 but in the same sand casting looks as this model. Rear rotor but it actually is a stunt engine to my surprise. They certainly had some unique engines.
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Post  davidll1984 Sun Apr 19, 2020 7:24 pm

y have super tiger wit same head desing not ful cooling fin wit same neadle ventury 2part screws holding ventury neadle jet mising original part it can use 2 jet 2 speed seting my use carb now wit tuned pipe
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Post  EivindB Mon Apr 20, 2020 1:15 am

[quote="Mike1484"]I would say it is a 1963 MVVS .15 or.2.5 cc engine . Used for speed and free flight .

Mike14
I Love This Forum! Thanks for the clues. I'm now pretty sure it's MVVS 2.5RL from about 1963. I haven't tried to start it, but it seems ok
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Post  Davenz13 Mon Apr 20, 2020 3:04 am

You're right on the button guys. Clapping

What Brand? Mvvs_224


Here's the diesel version

What Brand? Mvvs_223
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Post  balogh Mon Apr 20, 2020 4:04 am

Just in case you are interested in a test on this engine, although not with front rotary valve intake:
http://www.sceptreflight.com/Model%20Engine%20Tests/MVVS%202.5%20%281959%29.html
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