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Mating a Cox Tee Dee .09 to an Enya .09-III carburetor Cox_ba12





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Mating a Cox Tee Dee .09 to an Enya .09-III carburetor Empty

Mating a Cox Tee Dee .09 to an Enya .09-III carburetor

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Mating a Cox Tee Dee .09 to an Enya .09-III carburetor Empty Mating a Cox Tee Dee .09 to an Enya .09-III carburetor

Post  sosam117 Thu Jan 27, 2022 8:26 am

Mating a Cox .09 to an Enya .09 carburetor

Mating a Cox Tee Dee .09 to an Enya .09-III carburetor Cox_0915
Mating a Cox Tee Dee .09 to an Enya .09-III carburetor Cox_0916
Mating a Cox Tee Dee .09 to an Enya .09-III carburetor Cox_0917


Parts to order to do this modification:
Cox .09 Tee Dee Carburetor Body (Aluminum) from either Ex Model Engines or Cox International.
Enya .09-III carburetor – part number 09330

The photos below are of the Enya .09-IV Quicky carburetor

Mating a Cox Tee Dee .09 to an Enya .09-III carburetor 001_en19
Mating a Cox Tee Dee .09 to an Enya .09-III carburetor 002_en15
Mating a Cox Tee Dee .09 to an Enya .09-III carburetor 003_en11


Unfortunately, the Enya .09-III carburetor is undersized to try to tap the threads on it to thread into the Tee Dee carburetor body (aluminum). The o.d. of the carburetor measures about 7.0mm and the threaded hole on the carburetor body measures 7.08mm
So, the carb slips in nicely into the carb. body.
Mating a Cox Tee Dee .09 to an Enya .09-III carburetor 010_ca10
Mating a Cox Tee Dee .09 to an Enya .09-III carburetor 011_ve10


What has to be done then is to modify the carb. body to make the Enya carb. Fit to the Cox engine.
First thing is to remove the radius off the carb. body where it transitions from the crankcase to the carb.
This also will be our area for the screws that are on the Enya carb to secure the carb onto the carb. Body.
At the top, where the carb slips in, is our flat (straight area) use that area to have as your depth to mill away the aluminum to make the mounting area for our screws.
Mating a Cox Tee Dee .09 to an Enya .09-III carburetor 005_cl10
Mating a Cox Tee Dee .09 to an Enya .09-III carburetor 006_cl10
Mating a Cox Tee Dee .09 to an Enya .09-III carburetor 007_cl10


I using a 3/8” end mill and clamping the carb. body in my mill’s vice, clamping on the front and back of the carb. body and lining up the carb face on the body at 90 degrees to the mill’s table.
Next was to rotate my mill’s vice so that the carb section was in the same axis as my mill when I cranked the handle for milling (less than 45 degrees – 30 some degrees))
I carefully milled in the center of the venturi section where the carb will go to a depth of 6mm from the face. (to clear screw head size).
Mating a Cox Tee Dee .09 to an Enya .09-III carburetor 009_sc10


This was done on one side then the other as well.

Next was to drill the clearance holes for the Enya carb. mounting screws.
With my vice still set at the correct angle, I figured out the center of the hole using a lettered drill bit (“K”) in the carb. body hole, touching it with my center bit and ½ that to get my center.
Then I measured on the Enya carb the hole depth of the screws. From there I was able to get the depth to where I needed to droll the holes.
Mating a Cox Tee Dee .09 to an Enya .09-III carburetor 009a_s10


I center drilled the one side. Then changed to a clearance drill needed for the screws and drilled the hole all the way through to the other side.

Took out the carb. body out of my mill’s vice and installed the Enya carb to the Cox carb. body.

So far so good!

Last thing I had to do was to shorten the stem on the Enya carb that went into the Cox carb. body.
It was sticking down too low to where it would not let the carb. body be assembled onto the Cox engine.
I test fitted it a few times to make sure there was no rubbing or binding from the carb when assembled.
Mating a Cox Tee Dee .09 to an Enya .09-III carburetor 008_ca10


That done, I used a little Permatex gasket sealant on the Cox carb. body at the usual locations and assembled the engine and let it sit over night to cure.

Last to do was to assemble the Enya .09-III carb onto the Cox .09 engine.
About 2 weeks later I had the chance to run the engine and it did just about as well (maybe better) as my Cox Tee Dee .09 that has the Cox carb.
Though, it transitions better from idle to high and back with the Enya carb over the Cox carb.
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Post  sosam117 Thu Jan 27, 2022 8:31 am

I have modified an Enya .049 silencer to fit to this Cox .09 with a lot of work as well, but it worked out.
On the Enya .049 silencer I had to make the hole diameters larger to fit the diameters of the Cox .09 cylinder and had to file down the thickness of the top surface of the muffler to fit into the cooling fins of the Cox engine.

NOTE: Need to take photos of it on the engine
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Post  Lukemiester Fri Jan 28, 2022 12:49 pm

Very interesting project so far
Me likey Smile
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Post  Coxfledgling Fri Jan 28, 2022 6:33 pm

Yes, really good work and info. Just waiting for pictures of the silencer info then I will get in touch with Ken Enya for parts.

Thanks Sosam.
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Post  davidll1984 Sat Jan 29, 2022 12:13 am

Coxfledgling If you contact ken enya could you ask him if he has a piston for the .15 mk|| rc engine i nead just a piston the new set from mecoa is back order The part is unavailable discontinue I don't know if I could fit another model of sleeve piston inside the enya.15 maybe someone knows where I could find it, it's because I found that it might be possible to use this model of piston to replace the piston in m'y .15 cox rc medallion
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Post  Coxfledgling Sat Jan 29, 2022 2:43 am

Yes, sure, what 15 is it exactly ?

I will chase up ken on Monday evening, maybe before.

You know I'm in Snowdonia Wales UK ?
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Post  rsv1cox Sat Jan 29, 2022 2:59 am

Coxfledgling wrote:Yes, sure, what 15 is it exactly ?

I will chase up ken on Monday evening, maybe before.

You know I'm in Snowdonia Wales UK ?

Hi CF. I always enjoy reading your posts.

It would be a good idea to flesh-out your statistics on your profile.

Bob
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Post  davidll1984 Sat Jan 29, 2022 3:50 am

Its a old enya .15 rc mk|| tink mabe mk||| its number is model.3304 It has a thick cylinder and carb has airbleedMating a Cox Tee Dee .09 to an Enya .09-III carburetor 16433810
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Post  sosam117 Sat Jan 29, 2022 11:33 am

David,
Could you take better photos of the crankcase of your Enya 15?

On the one side it should have model 3304 and on the other side should be the version number like Enya 15-III

If it is then an Enya 15-III Model 3304, the piston/cylinder (matched) is Enya part number 15304

Here is how I could verify the Enya engine just like the photos below:

Mating a Cox Tee Dee .09 to an Enya .09-III carburetor Enya_160


Last edited by sosam117 on Sat Jan 29, 2022 11:45 am; edited 1 time in total (Reason for editing : Photo of Enya engine)
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Post  davidll1984 Sat Jan 29, 2022 1:23 pm

Sosam yes it is an Enya 15-III Model 3304, i cant Find that parts 15304 is Sold Out at mecoa
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Post  sosam117 Sat Jan 29, 2022 2:17 pm

davidll1984 wrote:Sosam yes  it is an Enya 15-III Model 3304, i cant Find that parts  15304 is Sold Out at mecoa

David,
Here is a website I use (in Australia) that has your piston/sleeve (match) available.
There they have "two" of them in stock.

They have been there for me on parts when I can't get them from either MECOA or Ken Enya.
Ace RC Models is like MECOA.
They have Enya parts available, but when they are gone, they are gone for good like MECOA.

https://www.acercmodels.com/enya-tv-15-cylinder-liner-piston-assy.html

One thing to remember is to go to the top and use the drop down to get the cost in your currency. (Mine is USD)

Glad I could help out.
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Post  davidll1984 Sat Jan 29, 2022 3:20 pm

Sosam Thank you for the link I almost bought a used motor for 70$ Canadian you made me save m'y mony Lots of interesting things I'll see if I can find something else to combine chiping I hope I'll have time to place an order before it's gone. I have to wait until Tuesday I hope the chipping is resonable Small Cox Logo Babe Bee .049 RC Plane I Love This Forum! cheers
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Post  Coxfledgling Sat Jan 29, 2022 8:32 pm

Same for me...

Thanks for the heads up about the Oz site...

They do an 8  aa battery holder with the strip type series connected connection strips, need them for some tx's I have.

Unicorns in UK...
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Post  sosam117 Sun Jan 30, 2022 12:04 am

Coxfledgling wrote:Same for me...

Thanks for the heads up about the Oz site...

They do an 8  aa battery holder with the strip type series connected connection strips, need them for some tx's I have.

Unicorns in UK...

A friend of mine (Allan Laycock - Aussie) pointed me to that website as he gets some old stuff from them as he lives a hop, skip, and a jump from Ace RC Models and Hobbies model shop.

Allan emails me when they get "used" old Enya like the .049, .06, .08 and .10 engines into the shop.
Now you know my source. Shh

If you order from Ace RC Models & Hobbies, currently Australia is in lock down so they might not be able to ship your order?

Yesterday (28/1/2022), I received a Christmas card that I mailed to Allan Laycock back December 1st and it came back to me almost 2 months later.

I tried back in Dec. 1st to mail a package (Cox engine parts) to Allan along with the Christmas card. The post office said that no packages were being accepted into Australia and I asked about the Christmas card?
I was told no problem.
Well, I got the Christmas card back? Almost 60 days later.
Did it go around the world in almost 60 days? Well, it has a post marking on it from Australia.

Emailed Allan and he said thing may lighten up by March?


Last edited by sosam117 on Sun Jan 30, 2022 12:44 am; edited 1 time in total (Reason for editing : Delivery problems in Aussie land)
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Post  944_Jim Sun Jan 30, 2022 10:43 am

Sosam,
Any chance.you've tried Enya spray bars in Medallion .09/.15.engines? I'm stuck with a few that need spray bars to replace the "throttle bars" used in the RC engines...now I know why I got them so cheaply!
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Post  sosam117 Mon Jan 31, 2022 1:44 am

944_Jim wrote:Sosam,
Any chance.you've tried Enya spray bars in Medallion .09/.15.engines? I'm stuck with a few that need spray bars to replace the "throttle bars" used in the RC engines...now I know why I got them so cheaply!

Yes, I did use an Enya .09 spray bar on a Medallion .09, and it worked out well.
I did that back in the early 2000's when getting parts from Estes was impossible.
Sadly, when I was able to get the correct spray bars from Burnie/Matt, I changed them back to the original OEM setup.
New "red" plastic venturi with the OEM Cox spray bar and clip.

And I retired those .09 Medallion engines and started using my Enya .09-III engines (with mufflers).
New rules for engines to have mufflers at the flying field.

One thing that has to be done is to make sure the fuel spray hole in the Enya spray bar is centered in the venturi.
That just takes a little work and removal of the plastic boss on the venturi.
But don't remove the entire boss off the venturi, you need some of it to orientate the Enya spray bar properly!

I know I still have one venturi with the Enya spray bar set up in my parts "goodie" box.
I'll take some photos and give you some hints on how to do it.

Til later.


Last edited by sosam117 on Mon Jan 31, 2022 1:45 am; edited 1 time in total (Reason for editing : spelling mistakes)
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Post  944_Jim Mon Jan 31, 2022 12:03 pm

sosam117 wrote:
I know I still have one venturi with the Enya spray bar set up in my parts "goodie" box.
I'll take some photos and give you some hints on how to do it.

Til later.

Awesome! Thanks much...seems I'll have engines for my Frog Mosquito sooner than I hoped after all.
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Mating a Cox Tee Dee .09 to an Enya .09-III carburetor Empty Fledgling

Post  Coxfledgling Sat Feb 05, 2022 12:51 am

Thanks Sosam, ken Enya info definitely in my little red book !

I am gunna write down stuff of interest from now on, not try to remember or "look back" thru posts ( and then not find them ) !

Sosam, carb 09330 and exhaust m492 can now be chased up over the weekend from Jen Enya.

I seem to remember in one thread that it would be wise to replace the plastic throttle arm for the metal type, and some other stuff, but which thread is that in please.

I have looked back thru the threads to about this time last year, but cannot find it.

I have made a note of thread sizes etc. for Cox engines, and placed in a dedicated Cox engine info hard copy file, for future reference.
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Post  Coxfledgling Sat Feb 05, 2022 1:17 am

A while ago I enquired on here about td09 alloy Venturi thread size and pitch.

5/16 X 32.

I thought that sounded familiar, for what I don't know.

In UK, car wheels have shrieder ( spelling may be wrong ) valves mostly. The valve body has rubber, and a brass centre, which is very close to that size and pitch, which will screw into the alloy td09 inlet manifold, but is a bit "wobbly". Not tried to screw into the plactic inlet manifolds...yet.

The rubber from the valve body is easily removed leaving the brass body. These valve units usually trashed in tyre shops, would be "free", with brand new ones 10 cents probably...
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Post  sosam117 Sat Feb 05, 2022 7:38 am

Coxfledgling wrote:Thanks Sosam, ken Enya info definitely in my little red book !

I am gunna write down stuff of interest from now on, not try to remember or "look back" thru posts ( and then not find them ) !

Sosam, carb 09330 and exhaust m492 can now be chased up over the weekend from Jen Enya.

I seem to remember in one thread that it would be wise to replace the plastic throttle arm for the metal type, and some other stuff, but which thread is that in please.

I have looked back thru the threads to about this time last year, but cannot find it.

I have made a note of thread sizes etc. for Cox engines, and placed in a dedicated Cox engine info hard copy file, for future reference.

Fledgling,
I like to get the metal throttle arm over the plastic because with the plastic over time with exposure to the sun and fuel, the plastic gets brittle, and I don't have that problem with the metal arm and beside on a small engine the metal arm looks better than a larger black plastic arm.

The part number for the metal arm is: 09330C throttle lever (metal) for ¥220 a piece.
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Post  gkamysz Sat Feb 05, 2022 9:18 am

Funny enough, I mounted an Enya carb to an MVVS 1.5 diesel in my first 4 channel trainer. I was flying with my instructor on one of my first few flights when the metal throttle arm broke. 2oz on a .09 diesel runs quite a while. I flew the tank out and had my first solo/deadstick landing.
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Post  sosam117 Sun Feb 06, 2022 5:25 am

gkamysz wrote:Funny enough, I mounted an Enya carb to an MVVS 1.5 diesel in my first 4 channel trainer. I was flying with my instructor on one of my first few flights when the metal throttle arm broke. 2oz on a .09 diesel runs quite a while. I flew the tank out and had my first solo/deadstick landing.

Both the plastic and metal servo arm has its place.
The plastic will absorb the vibrations for a while until it breaks off too.
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