Russian Uctkam Diesel (Full Version)

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Dan Vincent -> Russian Uctkam Diesel (6/9/2004 5:02 PM)

Back in the '90's they were selling Uctkam twin BB, rear drum valve 1.5cc glo engines. They were originally designed to be rear intake, rear exhaust car engines. The threads on the crank are quite short, requiring the use of a shouldered prop nut to get enough length for a prop.

You can reverse the setup to make a rear intake, rear exhaust configuration for airplanes but a little grinding will be necessary to open the ports to line up with the rear drum window.

When they came out with the diesel version I grabbed one and quickly discovered the compression screw would not budge the contra piston. I finally disassembled the engine and did a little work fitting the contra-piston. Now it is still tight but can be moved. I turned down the screw and the contra piston dropped onto the piston. Now I have to figure a way to retain the contra-piston in the head but remain movable.

Has anyone else run one of these engines? Did you have a tight contra-piston?

They are quite heavy, with a steel front housing. They did make a lightweight aluminum front housing and a black shouldered prop spinner for airplane use..

Engine with diesel head removed
diesel head
glo-version with custom shouldered prop spinner nut.
Rear intake, rear exhaust car setup being converted for RC boat use with OS .10 carb & OS flywheel...reversed to clear tuned pipe fitting.



Motorboy -> RE: Russian Uctkam Diesel (6/9/2004 6:39 PM)

quote:

ORIGINAL: Dan Vincent

... Uctkam ....


Utckam???? No , it is "ЧСТКАМ" , say it as russian do it: Tshstkam.. [:)]

The part with rear drum at crankcase can turn 90 degree and the engine will run reverse to example used for canard airplane with pusher engine...

Jens Eirik



Dan Vincent -> RE: Russian Uctkam Diesel (6/9/2004 7:53 PM)

Jens,

Quite right...but pehaps you can forgive my error if you realize the USA keyboard does not have the proper Russian character, so we, as well as the people who sell these engines, use the letter "U" as it is as close as we can get. The picture below will show what I mean.

Thanks for pointing out these Russian language problems.

Rotating 90 degrees also works on front rotor engines with separate front end housings. I caution anyone who does this with a plain bearing engine as the crank pin can be pushed to the rear of the engine in some cases which can gouge the backplate and create destructive metal filings. BB engines are usually much safer to use for reverse rotation applications.



Tim Wiltse-RCU -> RE: Russian Uctkam Diesel (6/10/2004 5:40 PM)

Dan,

I too have a new glow version. I bought it just to see the rear drum set up and was then going to resell it. Mine is so tight the piston goes about half way up the cylinder. The bearings have a ton of drag and while trying to see what the story was with the locked piston I broke off one or two head screws!!!! I guess I will try to run it and keep it maybe if I can ever get it rebuilt to the point that it will run. Have you ran the hydro yet????

Later,Tim



Dan Vincent -> RE: Russian Uctkam Diesel (6/10/2004 7:11 PM)

Tim,

Don't worry about the squeaky-tightness when turning over any new ABC type engine. It's normal andclearences open up when it gets hot.

Yes the screws are absolute junk on these engines. Not sure of the size, maybe 3mm. I need to get a tap to chase out the threads and then get a box of replacement Socket-Head screws.
These Uctkams have 6-head screws, 8-housing screws and 2 for the venturi casting. A total of 16 screws for such a small engine. Luckily they are all the same length.

Here is a better shot of the boat. The tuned pipe is an Uctkam part. They also have an aluminum front housing if you want to lose a little weight and turn it around into an airplane configuration.

The RC carb is out of an early OS .10 baffle piston engine. I'ts a little sloppy in fit so I may try a later carb. I originally built this Dumas Hydro around 1980 with an OS .10 FS but never got a chance to run it. Also have a Dumas Ski-boat for .10



maxtenet -> RE: Russian Uctkam Diesel (6/10/2004 10:50 PM)

Where are the censors? These are glow engines! Or am I the only one being targeted?

Let's find out! Here is a picture of a MK17 four stroke


Max



Dan Vincent -> RE: Russian Uctkam Diesel (6/10/2004 11:38 PM)

Max,

This started out a thread on the Uctkam diesel and I got involved with showing the different options, which included glo stuff. Sorry, you are correct....they can destroy my pictures and I will turn myself in for Keel-Hauling in the AM.

I have a tendency to talk about engines in general and forget they are segregated here. Oh well, When in Rome.......

Sorry..



AMB -> RE: Russian Uctkam Diesel (6/11/2004 12:58 AM)

I promise not to show a pix of the irvine 36*** with xxxx type head till converted (whoops I think its there with AJs head the right kind)
and Vincent you have shown us so many great diesel pics think your allowed one

*** pix of 36 irvine conversion under Dan Vincents post on enya 15 just field down to my reply if you have not seen it



maxtenet -> RE: Russian Uctkam Diesel (6/11/2004 1:46 AM)

Don't apologize Dan , I love pictures of your engines! I am a collector too and have many of the same engines. It's just that once I posted the mk17 picture and got reprimanded because it wasn't a diesel. I thought it was neat as it started out as a diesel. Do you collect certain sizes? I began collecting diesels in general and then limited myself to 2.5's and .40 glows as my wife couldn't understand why I needed all these engines for only 18 planes! Do you by any chance have a Magdeburg 2.5 (east german) engine? I have searched for 20 years and cannot find one.

max



Dan Vincent -> RE: Russian Uctkam Diesel (6/11/2004 4:04 AM)

Max,

I like small engines but I'm all over the place with collecting different sizes.

Back in 1951, as a sixth-grader, I found out there were engines. Prior to that I had built both stick and solid models. A classmate sold me a like-new Atwood Wasp for $4.00 and I was off and running.

I discovered a local hardware store had some kits and I was soon the proud owner of an Enterprise "Super Knockout" C/L model. The box said .049 to .099 engines. I gave the model one of my finest (heavy) solid model finish with lots of sanding sealer and dope. Well, the Wasp may have been a world-beater in FF but it was no match for my sturdy Knockout. After several taxi laps the tank finally ran out and I learned my first lesson in powered flight....if the box says .049 to .099....it really means "Go with the .099."

An OK Cub .099 was purchased from another kid and my heavy model finally struggled into the air....barely.

Since then I never did take the .049 serious for C/L flying but did enjoy several years of successful .09 flights. When someone tells me they have an .049 that has the power of an .09 I'll bet I can show them an .09 that really has the power of an .09.

My main collection is my .09 engines but I also have Half-A's, the little 1/4A and smaller, 1.0cc engines, most of the .15's that were used for Quarter-Midget racing, some C/L stunt .19, .29 & .35 engines.

I never heard of that German Magdeburg 2.5 engine but if anyone knows about them it would be Jim Duncan from the Kansas City area. He had over 700 .15's last time I talked to him.

I only have around 300 .09 engines but a buddy in Australia collects nothing but .09's and he has over 500 at last count.

My Holy Grail of .09 engines includes a 1.9cc Osam "Lilliput" (forerunner of Supertigre) that looks a lot like a McCoy .098 and the Australian Gee Bee "Sabre" 150 diesel.

Here is a picture I snatched from an old '50's magazine. Looks like a cross between an Atwood Wasp .049 and an Elfin .5cc



maxtenet -> RE: Russian Uctkam Diesel (6/11/2004 9:40 PM)

Dan,

This thing is between an .09 or a .15 and I cannot find any info on it. Is it something you or anyone else recognizes? Rear rotary valve with fuel shutoff, probably Russian. Let me know if you have any info on it. It says TAKT on one side and the number 9 on the top of the case and 1959 on the bottom. I know thats not a date because of the technology. It's schnuerle ported! It's my next restoration project. I'll make some new parts and re-anodize the head and it should make a neat engine.

Thanks,
Max



Dan Vincent -> RE: Russian Uctkam Diesel (6/12/2004 12:20 AM)

Max,

Sorry, it's a new one to me. If it's a .12ci or 2.0cc I wonder why the 9 on the case. Is it ABC?

Maybe Motorboy can enlighten us...he knows about Russian stuff.



Hobbsy -> RE: Russian Uctkam Diesel (6/12/2004 1:16 AM)

How was the MK 17 set up when it was a Diesel? It sure is a cool looking engine.



gcb -> RE: Russian Uctkam Diesel (6/12/2004 4:51 AM)

Hobbsy,

The MK-17 IS a cool engine. It is a smooth running, rear intake diesel with instrument grade ball bearings. It comes with a "sport" insert in the venturi and a slightly larger (red) one for more power. I did not notice much difference with handling between the two intakes for my purposes. I have three MK-17's. Only one is in a plane (Brodak Flying Clown).

Carlson's Engine Imports has them.

George



Motorboy -> RE: Russian Uctkam Diesel (6/12/2004 6:40 AM)

quote:

ORIGINAL: Dan Vincent
Sorry, it's a new one to me. If it's a .12ci or 2.0cc I wonder why the 9 on the case. Is it ABC?
Maybe Motorboy can enlighten us...he knows about Russian stuff.


"Takt" means "step"

The engine are unknown for me, but the engine look very modern to be maked in 1959[sm=confused.gif].
Dan, what are you thinking about the construction at engine look modern than 1959 engines??

About are 1959 number or year, i am not sure..

Jens Eirik



Dan Vincent -> RE: Russian Uctkam Diesel (6/12/2004 2:04 PM)

Jens,

The 1959 is a mystery to me too.

This engine is evidently Russian, given the name.

It borrows from Paul Bugl designs. Paul started playing with Schneurle-ported engines around 1965 and began producing them around 1971.

I would put this Russian design at 1972 or later.

This is purely speculation with no real knowledge of this engine.

I'd be interested to know the bore and stroke as the "9" on the bypass makes me wonder if it is actually an .09. Russians usually called their engines 1.5cc.



peterburford -> RE: Russian Uctkam Diesel (6/14/2004 2:31 AM)

In reply to Dan Vincent.
Dan,
That 1.5 cc diesel is a particularly pretty design of Gordon's.
If I ever make replicas, it will be of only our engines.
That model would certainly be a consideration.
Peter



Dan Vincent -> RE: Russian Uctkam Diesel (6/14/2004 3:34 AM)

Peter,

Thanks for the update..

That Gee Bee "Sabre" is a very beautiful design. Reminds me of a cross between the Atwood Wasp and Elfin .5cc. For those who are reading this and are not familiar with this engine it is actually a GB (for Gordon Burford). Somehow it evolved into being known as the Gee Bee.
Similar I guess to the Cox Thimble Drome (TD) which evolved into the popular "Tee-Dee."

Back in those days the most respected Half-A in the world was the Atwood Wasp .049. The 2-screw radial mount with optional tank gave a very pleasing look of compactness and efficiency. When Atwood began making his own "Atwood" engines he used the same format. The same style was copied for the Royal Baby Spitfire .049, McCoy Mini-Mac and .049 diesel, OK Cub .039 & .049X and finally, the robust Holland Hornet. I always wished for an .09 Wasp but the GB took it one step further and made it a diesel...I want one.

Australian David Owen was under the impression Gordon was going to make a GB 150 reproduction some time ago. I have been waiting for him to tell me they were available. Now I'm wondering if someone else may be doing it.

Someday I hope to have a GB 150 and a Sesqui 1.5 on my shelf.



maxtenet -> RE: Russian Uctkam Diesel (6/14/2004 7:32 PM)

Dan,

That Russian engine has a bore of 17/32's of an inch and stroke of 23/32's of an inch according to my ancient micrometer. I don't have the metric equivalents or the formula for displacement handy.

Max



Dan Vincent -> RE: Russian Uctkam Diesel (6/14/2004 9:10 PM)

Max,

Sounds like a .19ci or 3.25cc



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