Cox .020 PeeWee/TeeDee prop-screw

Roddie, the prop screw fix looks real good, almost scale like, looks like that .020 has potential for a Cox Engine of the Month winner.

Bernie of COX International sells socket head screws of the required dimensions for engine mounting purposes, and I replaced the slot round headed  stock screw on my COX TeeDee020 with a socket head screw,  that allows better tightening of the prop than the stock...I do not have any screws with American thread sizes here in our hardware stores..

https://coxengines.ca/mounting-screws/cox-049-engine-mounting-3-48-x-1-2-socket-head-screws-3-4.html

Only 1/2" long instead of 3/4", so will not work with a spinner, but just long enough for the  hubs of props for 020 engines.

What a kind gesture by Eric, Those kinds of things will never be forgotten!!!….

You’ll enjoy the PeeWee Roddie…. Special little jewels with a lot of potential!!

Got some .020 items coming from Canada. Now that I have this engine; I'm going to want to try to support its longevity. I feel a "click when I flick".. when turning-over the prop.. that makes me want to check the piston-rod's ball/socket joint. Makes sense to have that tool to reset it if needed. I already have the .049 and .09 versions.

Here's a list of what I ordered.. which I figured was good to start with...



Oh yea.... regarding the Cox Apache (autogyro) rotor.. .... It's to try on my "Rodd-O-Gyro"... someday.. (why not?)

I got my Cox .020 parts from Cox International yesterday.



I had a feeling that the piston-rod/socket joint might need a reset.. so I disassembled the engine to get a better feel.



There was a little end-play.. and I generally reset it for ZERO.. but not to the point of binding. I now had the tool.. and used it today. I'm happy with the result.



The reed wasn't sealing.. so I removed it to inspect.. and there was a slight crease; enough to prevent it from sealing properly.

Not easy to see without a magnifier...    





I used the new fuel tank-service kit.. which came with a Mylar reed (star-shape) and new circlip. Incidentally; the circlip that was in the engine is .0195" dia. wire. The new circlip wire is .0235" diameter. I decided to use all the new parts that came in the tank service kit. The reed is seating correctly now with the new parts. I'm glad that I bought the tank service-kit because the engine had 2 tank-screws that were shorter than stock.. and also were "round-headed". They're all nice and new now. The backplate to tank-bowl seat is in good shape.. as is the backplate's "overall" condition.. so I don't expect to see any leaking.





I like the silver tank bowl. Makes me want to polish/buff-out all of my 5cc (.049) bowls.



I installed X2 head gaskets because I will be using 25/35% nitro glow-fuels. Compression feels very good.

getback wrote:Hey man , I am glad you went ahead in to it , don't remember going in to that one but probably did at one time .
I think it would have run but sure didn't mean to sent something hard to run !
Or maybe its just a test for your skills
 I know my eyes have been messing with me lately and tring different contacts and all ,but i got a appt. coming up and I will tell them about this problem .

I didn't really have anything Cox .020 related until you sent me that engine Eric. I was anxious to "open it up" once I received the .020 related items from Bernie.. (mainly the piston reset tool...) so going through it just seemed like the logical thing to do.

New CEF member Loosespinner99 (Dave) is rebuilding his "new to him" Pee Wee .020 and I brought up/posted the creased-reed issue/photos partly for his benefit.. but also for others to understand; how a very slight deformity can prevent its proper function.

It's a nice little engine Eric.. and I feel very lucky to have it.

DON'T feel sorry about anything man.