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RC Carburetor for Cox Pee Wee .020 / .049 / Tee Dee .010 - .020 - .049/.050/.051 Cox_ba12




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RC Carburetor for Cox Pee Wee .020 / .049 / Tee Dee .010 - .020 - .049/.050/.051 Empty

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Post  sosam117 Sun Dec 20, 2020 12:01 am

Have anyone seen these throttles?
Like this one for a Cox Pee Wee engine?
Then there are RC throttles for the .049 Bee's as well.
And throttles for Tee Dee .010 / .020 / .049 - .050 - .051 as well


The Pee Wee throttle is currently going on Japan auction site for $39.15 (one bid)
RC Carburetor for Cox Pee Wee .020 / .049 / Tee Dee .010 - .020 - .049/.050/.051 Pee_we13
RC Carburetor for Cox Pee Wee .020 / .049 / Tee Dee .010 - .020 - .049/.050/.051 Pee_we15
RC Carburetor for Cox Pee Wee .020 / .049 / Tee Dee .010 - .020 - .049/.050/.051 Pee_we14
RC Carburetor for Cox Pee Wee .020 / .049 / Tee Dee .010 - .020 - .049/.050/.051 Pee_we16
RC Carburetor for Cox Pee Wee .020 / .049 / Tee Dee .010 - .020 - .049/.050/.051 Pee_we17
RC Carburetor for Cox Pee Wee .020 / .049 / Tee Dee .010 - .020 - .049/.050/.051 Pee_we18

Here is a carburetor for a Sure Start .049:

RC Carburetor for Cox Pee Wee .020 / .049 / Tee Dee .010 - .020 - .049/.050/.051 Sure_s10
RC Carburetor for Cox Pee Wee .020 / .049 / Tee Dee .010 - .020 - .049/.050/.051 Sure_s11

Or for the Tee Dee engines?

RC Carburetor for Cox Pee Wee .020 / .049 / Tee Dee .010 - .020 - .049/.050/.051 Tee_de12
RC Carburetor for Cox Pee Wee .020 / .049 / Tee Dee .010 - .020 - .049/.050/.051 Tee_de13
RC Carburetor for Cox Pee Wee .020 / .049 / Tee Dee .010 - .020 - .049/.050/.051 Tee_de14
RC Carburetor for Cox Pee Wee .020 / .049 / Tee Dee .010 - .020 - .049/.050/.051 Tee_de15


Even the Baby Bee

RC Carburetor for Cox Pee Wee .020 / .049 / Tee Dee .010 - .020 - .049/.050/.051 Baby_b11
RC Carburetor for Cox Pee Wee .020 / .049 / Tee Dee .010 - .020 - .049/.050/.051 Baby_b12
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Post  1/2A Nut Sun Dec 20, 2020 3:03 am

Where is the link for these pics?

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Post  sosam117 Sun Dec 20, 2020 5:42 am

@1/2A Nut wrote:Where is the link for these pics?

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Here are the links to the Japanese Auction site for the carburetors:
I hope it works?
If it does you might want to bookmark it for when another carb will show up (again)

One warning:
I you bid on the Japanese Auction site, do not bid on any "engines"
because it is a restriction on International shipment from Japan.
For some reason, if it has the word "engine" in the auction title you can't bid on it or ship it to the USA.
Reason being, "engine" is considered hazardous and dangerous because of possible oil and fuel in the "engine".

But, "IF" you order these carburetors you'll have no problems getting it shipped to the USA.
Sign up to buyee (bidding broker for foreign bidders) and bid on your "parts"

If you really want to bid on an "engine" you'll have to have a "friend" in Japan to ship your engine to.
From there, your friend can ship it to you as a package of "parts". Which I have been doing for almost a year (now).

Pee Wee carb.
https://buyee.jp/item/yahoo/auction/f479691501?conversionType=search_suggest_history

Sure Start carb.
https://buyee.jp/item/yahoo/auction/j699729348?conversionType=search_suggest_history

Tee Dee carb.
https://buyee.jp/item/yahoo/auction/v767265010?conversionType=search_suggest_history

Baby Bee carb.
https://buyee.jp/item/yahoo/auction/n482600654?conversionType=search_suggest_history
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Post  GallopingGhostler Sun Dec 20, 2020 6:42 am

Well I'll be, sosam117, that's one I've never seen before, thanks for posting.  Thumbs Up

It is an interesting concept for a 3D printed choke tube style carb mount plus carefully machined carb parts for the tank engines, sosam117. About the only thing needed is a suitable engine mounting system. Also, it is an interesting but simple choke tube style carb system for the Tee Dees as well.

It kind of reminds me of the OS Pet choke style carburetors of the late 1950's into the 1960's, that mounted above the venturi intake.

RC Carburetor for Cox Pee Wee .020 / .049 / Tee Dee .010 - .020 - .049/.050/.051 Osm-1912

At least for the .049 tank Bees, Bernie's remake of the Ace R/C tank back needle throttle seems to be a simpler and less costly solution, plus makes engine mounting easier. (Just saying,  Old Bugger  Tired w/ Coffee Read )

https://coxengines.ca/throttle-for-cox-049-engine-bee-style.html
RC Carburetor for Cox Pee Wee .020 / .049 / Tee Dee .010 - .020 - .049/.050/.051 Babe2011

However, for the Tee Dee's and Pee Wee's, it provides an alternate way of throttling, and an alternate way to upgrade these. The Tarno carbs and Pee Wee exhaust throttle sleeve are harder to come by. I find it interesting that the seller has a late model black striped Top Flite nylon prop of the late 1980's on the Tee Dee .049.

@sosam117 wrote:RC Carburetor for Cox Pee Wee .020 / .049 / Tee Dee .010 - .020 - .049/.050/.051 Tee_de15

Interesting find, sosam117, would make a good potential winner for the Cox engine of the month club, particularly for the Pee Wee, IMNSHO. Clapping Beer Cheers Thumbs Up sunny

@sosam117 wrote:RC Carburetor for Cox Pee Wee .020 / .049 / Tee Dee .010 - .020 - .049/.050/.051 Pee_we17
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Post  1/2A Nut Sun Dec 20, 2020 12:02 pm

Thank you Thumbs Up
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Post  robot797 Sun Dec 20, 2020 2:22 pm

I would love to have a 010 carb
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Post  emanuel Sun Dec 20, 2020 2:34 pm

I would love to have a td 020 carb 😀
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Post  1/2A Nut Sun Dec 20, 2020 4:40 pm

2yrs ago I tried to get Greg to mill up some air chokes but to no avail.

I rigged up a venturi to test the concept results:



May 22, 2018
Throttle Add - TD .020


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Post  emanuel Sun Dec 20, 2020 5:28 pm

Well done, looks nice.
barrel hole diameter?
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Post  1/2A Nut Sun Dec 20, 2020 9:31 pm

Matches the venturi at it's smallest dia. Small Cox Logo
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Post  aspeed Sun Dec 20, 2020 10:12 pm

I wonder if Bernie's reedy throttle could be converted to a TD without too much trouble. Maybe turn the base and chase a thread or something. There is no airbleed of course, so it would be more of a shutoff if you get into trouble. In any case, the carbs would not be too hard to make like the ones sold on feebay.
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Post  Jason_WI Mon Dec 21, 2020 12:44 am

Wonder how they keep the fuel from leaking out the screws? Only see one oring and the back of the plastic piece is flat so there would be a gap there between the screw and hole in the backplate.
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Post  davidll1984 Mon Dec 21, 2020 11:55 am

Y want one for tee dee .010 Nice upgrade for m'y litle ford cobra rc car m'y self desing couple carb upgrades tink its posible To place nva on top of valve control air flow and mix at same time???
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RC Carburetor for Cox Pee Wee .020 / .049 / Tee Dee .010 - .020 - .049/.050/.051 Empty Received "TWO" R/C carburetors for Tee Dee 049/050

Post  sosam117 Fri Jan 22, 2021 2:26 pm

Well, I was the winner in two of the four auctions for the R/C carburetors.
The two I won was for a Tee Dee 049/050.

RC Carburetor for Cox Pee Wee .020 / .049 / Tee Dee .010 - .020 - .049/.050/.051 Tee_de13
RC Carburetor for Cox Pee Wee .020 / .049 / Tee Dee .010 - .020 - .049/.050/.051 Tee_de14

Got them for $45.00 (each) then the shipping for $23.47 for a total of $113.47

Lost out on the Pee Wee 020 and Tee Dee 020. Those went for well over $70.00 (and more)!
I set a price at $55.00, anymore that that I was out!

Here are the R/C Carburetors from Japan on my custom built Tee Dee .049 engines.
From my box of "found" Kustom Kraftsmanship parts, and EX Model Engines, and Cox International parts as well.

RC Carburetor for Cox Pee Wee .020 / .049 / Tee Dee .010 - .020 - .049/.050/.051 Img_0050
RC Carburetor for Cox Pee Wee .020 / .049 / Tee Dee .010 - .020 - .049/.050/.051 Img_0051
RC Carburetor for Cox Pee Wee .020 / .049 / Tee Dee .010 - .020 - .049/.050/.051 Img_0052
RC Carburetor for Cox Pee Wee .020 / .049 / Tee Dee .010 - .020 - .049/.050/.051 Img_0053
RC Carburetor for Cox Pee Wee .020 / .049 / Tee Dee .010 - .020 - .049/.050/.051 Img_0054
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Post  aspeed Fri Jan 22, 2021 2:50 pm

Looks fairly easy to make the carbs. Especially for $70 US. It would be possible to get a non adjustable airbleed hole on the body of the carb with only a bit of trouble, and a good magnifier. I still wonder if the Cox International reedy carb has a usable stem for a TD? It might pull out of that Surestart style backplate and be threadable? IDK as I don't have one. https://coxengines.ca/throttle-conversion-for-cox-049-engine.html
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Post  sosam117 Fri Jan 22, 2021 4:19 pm

@aspeed wrote:Looks fairly easy to make the carbs.  Especially for $70 US.  It would be possible to get a non adjustable airbleed hole on the body of the carb with only a bit of trouble, and a good magnifier.  I still wonder if the Cox International reedy carb has a usable stem for a TD?  It might pull out of that Surestart style backplate and be threadable?  IDK as I don't have one.  https://coxengines.ca/throttle-conversion-for-cox-049-engine.html

It looks to be the same idea. The Japanese carburetor is not as wide as the Surestart throttle valve carb.
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Post  Cribbs74 Fri Jan 22, 2021 8:25 pm

Are you going to run it? It would be nice to see how it worked.
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Post  MauricioB Fri Jan 22, 2021 8:38 pm

Hello guys, I leave my opinion about it.
This product is an air valve, it is not a carburetor, that said, using the air valve or carburetor, it will be necessary to pressurize the fuel tank, otherwise the engine at low rpm will not work.
In my opinion and after a few tests, for these engines, with carburetor or valve, an exhaust chamber and pressurizer are needed, otherwise it will not work properly.
If you don't use an exhaust chamber and pressurizer, the best of the best is the throttle ring, which is great for micro motors without pressure in the fuel tank.
Believe me, the answer is always faithful, it will always be there, the acceleration ring is safe, noble and very simple to apply. Old Bugger

In this video, I show a Cox Medallion .049 r / c with acceleration ring, without pressurizing the fuel tank, the response of the engine is immediate, faithful, always responds .... there is no better way to fly safely than with the acceleration wheel! Old Bugger
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Post  sosam117 Fri Jan 22, 2021 9:13 pm

@Cribbs74 wrote:Are you going to run it? It would be nice to see how it worked.

I'll wait a few months before trying to run it.
Todays temperature was in the +16° but it was at least sunny.
It's a little cold in the Chicago area right now.
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Post  MauricioB Fri Jan 22, 2021 10:16 pm

I have done these tests on Cox .020 and Cox .049 ... it won't work ... it doesn't compare to the throttle ring !!
RC Carburetor for Cox Pee Wee .020 / .049 / Tee Dee .010 - .020 - .049/.050/.051 20201021
RC Carburetor for Cox Pee Wee .020 / .049 / Tee Dee .010 - .020 - .049/.050/.051 20201022
Mad Mad Mad
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Post  MauricioB Fri Jan 22, 2021 10:20 pm

Cox Pee Wee with acceleration ring! ... incredible! Very Happy Very Happy Very Happy Very Happy Very Happy

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Post  GallopingGhostler Fri Jan 22, 2021 11:06 pm

@MauricioB wrote:This product is an air valve, it is not a carburetor, that said, using the air valve or carburetor, it will be necessary to pressurize the fuel tank, otherwise the engine at low rpm will not work. In my opinion and after a few tests, for these engines, with carburetor or valve, an exhaust chamber and pressurizer are needed, otherwise it will not work properly.

The OS Pet .099 used a similar air valve carburetor device, that sleeved into the venturi, effectively reducing the throat diameter at the needle valve assembly. It was used in the earlier R/C's through the mid 1960's. That's how they got around the issue of not requiring a pressure system.

RC Carburetor for Cox Pee Wee .020 / .049 / Tee Dee .010 - .020 - .049/.050/.051 Osm-1913

This device does appear to reduce the throat area around the NVA, so it might have sufficient suction to maintain a standard fuel system without pressure. Of course, there would be a loss of wide open throttle HP, but then that would be the sacrifice for a throttle-able engine, but probably more powerful than a reedie anyways. An unmuffled exhaust throttle ring would probably be less restrictive.

I guess that to prove would be to actually test it. These are just my sentiments, not meant to derail any discussion. I only have 1 Tee Dee, the .020, and as such am least qualified to comment.
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Post  sosam117 Sat Jan 23, 2021 12:02 am

Then what is the difference between the Cox R/C throttle and the one from Japan -- for Tee Dee engines:

This Japan R/C throttle for a Tee Dee .049/.050
RC Carburetor for Cox Pee Wee .020 / .049 / Tee Dee .010 - .020 - .049/.050/.051 Tee_de13

And this Cox R/C throttle for the same Tee Dee .049/.050?
RC Carburetor for Cox Pee Wee .020 / .049 / Tee Dee .010 - .020 - .049/.050/.051 Cox_te10

I'm talking about the Tee Dee engines that have front rotor intake and not the rear reed intake.
The group have been talking about the rear intake of a Cox Baby Bee, SureStart, and similar engines.
I am looking at the Tee Dee engines with this R/C throttle.
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Post  MauricioB Sat Jan 23, 2021 6:29 am

@sosam117 wrote:Then what is the difference between the Cox R/C throttle and the one from Japan -- for Tee Dee engines:

This Japan R/C throttle for a Tee Dee .049/.050
RC Carburetor for Cox Pee Wee .020 / .049 / Tee Dee .010 - .020 - .049/.050/.051 Tee_de13

And this Cox R/C throttle for the same Tee Dee .049/.050?
RC Carburetor for Cox Pee Wee .020 / .049 / Tee Dee .010 - .020 - .049/.050/.051 Cox_te10

I'm talking about the Tee Dee engines that have front rotor intake and not the rear reed intake.
The group have been talking about the rear intake of a Cox Baby Bee, SureStart, and similar engines.
I am looking at the Tee Dee engines with this R/C throttle.

The carburetor has the fuel inlet regulation needle combined with the air inlet through the venturi at a minimum distance, that is, the venturi opening (air passage) that will suck the fuel flow is integrated and arranged at the same time fuel when venturi is opened. As there is no distance between one point and another, their interaction is immediate and that is why it is called a carburetor, because it efficiently combines the air inlet with the fuel inlet as the venturi opens or closes.
The air valve you have there delivers air to another physical distance from the spray bar, therefore not accurate enough for good throttle response or to keep the engine throttle at low revs, it can of course work but when you accelerate suddenly you won't get an immediate response and in turn when you want to run the engine at low revs the engine will become critical in gear.
If you put this motor (with air valve) in an aerobatic model, you will not have fast acceleration responses, that is, it will not accelerate instantly and the motor may be planted in some flight position.
You can do bench experiences, but then in flight and stunts things change significantly.
For both cases, if you put a carburetor or air valve, it will help a better operation to pressurize the fuel tank, this is for both cases..
MauricioB
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RC Carburetor for Cox Pee Wee .020 / .049 / Tee Dee .010 - .020 - .049/.050/.051 Empty Re: RC Carburetor for Cox Pee Wee .020 / .049 / Tee Dee .010 - .020 - .049/.050/.051

Post  MauricioB Sat Jan 23, 2021 6:40 am

@GallopingGhostler wrote:
@MauricioB wrote:This product is an air valve, it is not a carburetor, that said, using the air valve or carburetor, it will be necessary to pressurize the fuel tank, otherwise the engine at low rpm will not work. In my opinion and after a few tests, for these engines, with carburetor or valve, an exhaust chamber and pressurizer are needed, otherwise it will not work properly.

The OS Pet .099 used a similar air valve carburetor device, that sleeved into the venturi, effectively reducing the throat diameter at the needle valve assembly. It was used in the earlier R/C's through the mid 1960's. That's how they got around the issue of not requiring a pressure system.

RC Carburetor for Cox Pee Wee .020 / .049 / Tee Dee .010 - .020 - .049/.050/.051 Osm-1913

This device does appear to reduce the throat area around the NVA, so it might have sufficient suction to maintain a standard fuel system without pressure. Of course, there would be a loss of wide open throttle HP, but then that would be the sacrifice for a throttle-able engine, but probably more powerful than a reedie anyways. An unmuffled exhaust throttle ring would probably be less restrictive.

I guess that to prove would be to actually test it. These are just my sentiments, not meant to derail any discussion. I only have 1 Tee Dee, the .020, and as such am least qualified to comment.

Yes, friend, the reduction in diameter of the venturi in the air valve, is precisely to achieve that the acceleration of air is powerful enough to suck the fuel from the spray bar or spray bar, this is due to the distance between the opening air valve and spray bar. For that reason it falls in turns and in power. It is an adaptation to achieve engine control by sacrificing its power and performance.
The carburetor is efficient because it will do the job of regulating the engine, always maintaining its maximum available power.
MauricioB
MauricioB
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Posts : 2894
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RC Carburetor for Cox Pee Wee .020 / .049 / Tee Dee .010 - .020 - .049/.050/.051 Empty Re: RC Carburetor for Cox Pee Wee .020 / .049 / Tee Dee .010 - .020 - .049/.050/.051

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