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Cox Engine of The Month
August-2019
fredvon4's

"Tee Dee .049"



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Post  getback on Mon Apr 29, 2019 8:25 am

Well that sucks Rod , sometimes you just don't get what you paid for / hope you find the other piston/cyl. set . DAMMIT!
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Post  balogh on Thu Jun 13, 2019 12:34 am

The postman just delivered this almost new, red postage stamp backplated No. 290 production engine....one of my favorit reedies because of its very light weight and brute force..the first COX engine version I ever saw and fell in instant and eternal love with in 1974.
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At 26$ plus shipping it was a deal...won it on ebay early morning on June 1st while boarding a plane at the new Istanbul airport, standing in the line ...

This one has double bypass cylinder i.e. No 1 design, no flats for wrench on top fin, and straight nose...I guess late 1960-s. I added the Carl Goldberg mount, high compression head, prop and red spinner and spring starter as welcome presents to the engine.
The cylinder and piston fit is excellent, the honing marks in the liner surface still visible, and the piston skirt is shiny as new. Came from an estate sold on ebay. Probably one of the many COX production engines that came with a plastic  C/L plane (Stuka, Curtis or similar)  and ended up in a drawer after the plane had flown a very few flights only, then was broken..I am hunting for these 290 serial No engines and got already 2 others in similarly as-new condition plus I have my first one from 1974  seen here as the last in the line on the right. One features a brass home made mount that I made with a plyer and scissor in 1975 to enable mounting the engine on the right on a balsa C/L plane I flew back then.

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Post  ticomareado on Thu Jun 13, 2019 7:47 am

Nice score. The real mother lode on the 290 series is the Spook 290. The machined aluminum postage stamp back plate produces better "checking" action of the reed than plastic. The CG adapter mount is also usable with it.
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Post  getback on Thu Jun 13, 2019 8:30 am

Nice looking engine's I love the way people let these go pretty cheap considering they haven't been broken in most time , A lot of power from a very light engine is right ! Small Cox Logo Babe Bee .049 Small Cox Logo
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Post  balogh on Thu Jun 13, 2019 1:50 pm

Thanks Ticomareado and Eric,

I bench tested the beast this afternoon and it gave me no reason to be disappointed. It swinged the 5x3 safety tip COX prop at near 18k and was missing 1 or 2 shims from under the high comp head (the overcompression with the TeeDee head and 1 shim was apparent when I used the spring starter and it kicked back hard before I released the spring... then oftentimes started against the spring swing direction.

I will add the shims and try it again. Even when hot, the cylinder/piston seal remained excellent,confirming that this engine has hardly been used in the past 50 or so years.

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Post  getback on Thu Jun 13, 2019 2:35 pm

Thumbs Up Thumbs Up cheers Yee Hi!!
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Post  aspeed on Thu Jun 13, 2019 11:59 pm

I picked up a Conquest at the Brodak meet. It was locked up from sitting but seems newish. Has the RC Perry carb like my other one. I passed on the .049s, even the TDs. I think I have enough. Got 4 Rossi .15s and a Aussie Taipan gold head .15 from the same gentleman. Oh ya, a cool Bi Slob too. Fun week but a bit burned out.
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Post  getback on Fri Jun 14, 2019 7:02 am

Just got some Bees from the Bay other day , were packaged good to . All different cylinders on them and a few metal stunt back plates also ... Recent engine acquisitions - Page 15 Img_2059
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I hope there are some Good runners in there !! Small Cox Logo Very Happy  Small Cox Logo
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Post  Oldenginerod on Fri Jun 14, 2019 7:15 am

Well done Eric. They look nice and tidy- not knocked around at all.
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Post  balogh on Fri Jun 14, 2019 2:46 pm

Nice bunch of escaped engines..I am sure they have low hours on them.
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Post  Oldenginerod on Sat Jun 15, 2019 4:20 am

My recent acquisitions have a little more weight to them.
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Picked these up a couple of days ago.  International Harvester/McCormick Deering "M" 1.5 hp.
Plenty of parts to make one runner.  I little different from .049s, but probably just as frustrating and certainly just as likely to cause an injury
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Post  getback on Sat Jun 15, 2019 7:49 am

Rod are those old Hit and Miss engines ?? Very Happy
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Post  Oldenginerod on Sat Jun 15, 2019 8:25 am

getback wrote:Rod are those old Hit and Miss engines ?? Very Happy

That's how a lot of people refer to them, but these are actually throttle governed, meaning they operate the same as a modern engine, such as a Briggs & Stratton. Most others of this age were hit & miss (1924-1932). This IHC model M was highly successful and reliable. Obviously very common in the USA, not so much here, so I was pleased to run across them.
Currently working to get the first one cleaned up and ready to fire. It's complete and nothing's seized, which is a good start. Even the 90 year old magneto still works. All came at the right price too. Just had to promise to show it to the previous owner once it's up & running. I did slip him a few bills ($100), but they were still a bargain at that.
Welcome to my other hobby. Laughing
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Post  getback on Sat Jun 15, 2019 8:52 am

Thats Cool , love to hear it run when the time comes , you see these often at fairs and there is even Hit and Miss get togethers . The last time i saw one run it was turning a cotton candy machine lol!
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Post  ticomareado on Sat Jun 15, 2019 9:00 am

Back in another life I used to have to tend to an ancient hand cranked Lister two cylinder diesel powered generator in the jungles of Central America. The damn thing would run forever on five gallons of fuel and put out about 8KW of power. The whole unit must have weighed 1500 lbs. or more.
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Post  smooth_bill on Sat Jun 15, 2019 10:54 am

Rod, nice find!

When I was 6 years old my family moved to a farm with 83 acres of fields and forests to explore. It had a large Oak barn, two cisterns, and an old house with no electricity, or running water. My grandfather was an electrician, and rigged up a wind generator to charge a car battery, and run a single light bulb in the basement. Upstairs we used Kerosene lamps for lighting, and eventually a Kerosene kitchen stove to replace the original wood stove.

The barn was a sight to see as all the Oak lumber was hand cut. The beams and frame were pegged together with Oak pegs, and all the Oak siding was nailed on with early hand made flat nails.

Among the other treasures I found was a Fairbanks Morris single cylinder horizontal engine overgrown by weeds next to the unused barn cistern. Amazingly, the engine was in very good shape after sitting out in the weather for an unknown number of years. I was about ten by then and decided to see if I could get the old engine running. I cleaned everything up, including the simple carb and fuel tank. To my surprise the cylinder and piston were in good condition. Apparently the drip oil cup was left full, and had trickled oil into the horizontal cylinder over the years and kept it virtually rust free. I filled the oil cup, refilled the crank journal grease cups, push rod linkage, rocker arm parts and cam rider, and all the other moving parts. Filled the water jacket, and gas tank, and tried to crank it over. Eventually figured out how to crank it through a compression stroke, and after very few minutes of cranking it fired a time or two, and was soon running. It surprised me because it would fire a few revs, then miss a few revs, and repeat. That was when I realized what hit or miss really meant. Played with that engine for years, but eventually lost interest. It was later sold to a scrap metal collector, and hauled away with all the other iron bits of farm equipment.

Now I see that same engine type at local farm equipment shows, and priced close to a thousand dollars on eBay!

Bill
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Post  fredvon4 on Sat Jun 15, 2019 12:12 pm

Bill's note reminds me of earlier Army days as a dependent......

We rented a lot of very old (1903 ~ 1963) when we had to wait for government quarters to be vacant
I was born 1955
Several homes we rented still had working servants quarters, back servants stairwells, cisternes, coal chutes and bins, Gas lights, and speaking tubes.....one home we rented the front door was 3" thick, 92" tall, and 65" wide with 6 hinges

Reason I remember this....buggs n critters came under it....mom demanded new WX strip....dad n sons drifted out hinge pins to now hold and maneuver about a 600 pound door.....poor logistics....dear old dad had to hire a crew to re hang that monster
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Post  balogh on Thu Jul 11, 2019 12:29 am

I have hauled on ebay these super polished beauties at an occasional price of 21 bucks (for the 2 together) plus shipping. Both are real vintage engines, the postage stamp backplate reedy features the special glow head with the W shape glow filament. I remember having read on this head here but cannot find the thread. Could anyone tell me in which production  years the glow heads came with the W filament?

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Last edited by balogh on Thu Jul 11, 2019 3:05 am; edited 1 time in total
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Post  balogh on Thu Jul 11, 2019 1:39 am

Thanks a bunch Lieven, I could dig out from one of the links you posted that Mark Boesen had identified the production period 69-72.
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Post  rsv1cox on Thu Jul 11, 2019 6:49 am

balogh wrote:Thanks a bunch Lieven, I could dig out from one of the links you posted that Mark Boesen had identified the production period 69-72.

Beautiful engines Andras.  I tend to go the other way.  Offered on ebay at $36.99 OBO.  I offered $32 and he took it.  Wouldn't anybody... Smile

I thought the #6 thin wall cylinder interesting.

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They are on their way.  I will show them off in a couple of weeks.

Bob
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Post  ticomareado on Thu Jul 11, 2019 8:12 am

Looks like Balogh may have gotten a 3 piece piston Baby Bee. The thick taper neck postage stamp with its heavy cylinder looks like a match for the time period of the W element heads too.
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Post  rsv1cox on Thu Jul 11, 2019 1:03 pm

Hmmm, this is strange, while the Sitter/Dannels Cox Model Engine Handbook describes a #6 cylinder my wiki reference only shows the four cross sections.  S/D describes the #6 cylinder as Two bypass, no sub-induction, wrench slot on top of fin, some are OD, ground for a throttle, generally have narrow exhaust slits.

Doesn't describe the one I pictured which is an early thin wall.

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What am I missing?
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Post  ticomareado on Thu Jul 11, 2019 1:26 pm

I believe you've got a pre '96 QRC for use with a muffled PT-19. Somebody decided they'd rather make noise.
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Post  balogh on Thu Jul 11, 2019 1:53 pm

Thanks Bob an Ticomareado.

From the COX Model Engine Handbook I figure my Babe Bee has the same detail features as the ECJ#38 dating back to 1956.
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I also expected this to have a 3-piece piston, but in fact this has a 2- piece one.

The postage stamp backplate reedy best matches the detail features of the ECJ#11g from 1969.

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These both seem to have been someone's beloved collection engines with not too long runtime on them. I assume all parts are original and not swapped with other engines as both may have gone into storage after a slight use and having been carefully polished.

When disassembled I found stiff blackened castor goo inside and the berillium reeds rotten greenish, partly consumed by corrosion. Spraybars stuck with stoned goo.

After replacing the reeds and cleaning both, I got 2 oldstock,  almost unused engines.
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