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

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

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.



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,     )

https://coxengines.ca/throttle-for-cox-049-engine-bee-style.html


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:

Interesting find, sosam117, would make a good potential winner for the Cox engine of the month club, particularly for the Pee Wee, IMNSHO.

sosam117 wrote:

Thank you

I would love to have a 010 carb

I would love to have a td 020 carb

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

Well done, looks nice.
barrel hole diameter?

Matches the venturi at it's smallest dia.

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.

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.

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???