Log in
Search
Latest topics
» Stealth SB-Xby Admin Today at 8:28 pm
» ST .35 STUNT / VOODOO / ZERO POINT ZERO NITRO
by TD ABUSER Today at 7:45 pm
» SUPERTIGER .15 PROJECT
by TD ABUSER Today at 7:42 pm
» For sale -- Cox Custom Carburetors for Tee Dee engines
by sosam117 Today at 5:23 pm
» WHERE ARE YOU BUYING YOUR FUEL AND GLOW PLUGS...?
by TD ABUSER Today at 4:35 pm
» Waiting for Engines from Ken Enya
by sosam117 Today at 4:33 pm
» Unusual Cox 049 cylinder - Need help identifying
by anm2 Today at 4:12 pm
» Jim Walker Bonanza etc.
by rsv1cox Today at 2:57 pm
» What's the Best Reed for Cox Reed Valve Engines.
by roddie Today at 1:37 pm
» Fuel choice
by 1975 control line guy Yesterday at 4:01 pm
» "Fall S.M.A.L.L." Video 3.
by GallopingGhostler Yesterday at 2:37 pm
» Gifted Fox
by Ken Cook Yesterday at 11:12 am
Cox Engine of The Month
August-2024
balogh's
![](https://i.servimg.com/u/f95/15/46/86/41/1_balo14.jpg)
"Cox TD09 R/C Beast of Burden featuring Kamtechnik head and DIY metallic fuel nipple"
![](https://i.servimg.com/u/f95/15/46/86/41/sponso12.png)
PAST WINNERS
balogh's
![](https://i.servimg.com/u/f95/15/46/86/41/1_balo14.jpg)
"Cox TD09 R/C Beast of Burden featuring Kamtechnik head and DIY metallic fuel nipple"
![](https://i.servimg.com/u/f95/15/46/86/41/sponso12.png)
PAST WINNERS
Cox Mufflers with Snout, GONE?
Page 1 of 1
Cox Mufflers with Snout, GONE?
Well, here I am again tinkering again. Thanks to to another FORUM member I am the proud owner of a Cox Muffler with a Snout, you know, the thing that sticks out to the right, or left and directs the smoke, gas, and CRUD away from the engine and mostly the plane. Why did Cox do away with the Concept, or was it too expensive to add a small tube to the side of the main muffler.
So I decided to see if I could do this myself. Where I used to work 20 years ago we made HF, 2 to 30MHz, broadband Radio Equipment for 3rd world countries and I had used a brass tube similar to that on the snout of the old Cox Muffler. I have beed cleaning out the garage for various reasons, made $$ on 2 different OLD video games for ATARI 400, 800 Computer Systems, and I pretty much new about where the brass tubes were. I dug out a few different sizes, figured out the best one and sat down in a hot garage and came up with this, first the part.
![Cox Mufflers with Snout, GONE? Img_1910](https://i.servimg.com/u/f47/17/55/00/36/img_1910.jpg)
brass tube
![Cox Mufflers with Snout, GONE? Img_1911](https://i.servimg.com/u/f47/17/55/00/36/img_1911.jpg)
top side view 1
![Cox Mufflers with Snout, GONE? Img_1912](https://i.servimg.com/u/f47/17/55/00/36/img_1912.jpg)
bottom side view 1
![Cox Mufflers with Snout, GONE? Img_1915](https://i.servimg.com/u/f47/17/55/00/36/img_1915.jpg)
top side view 2
the outside diameter of the brass tube is about 1/4inch, so it is a little larger than the original Cox Muffler. I am trying to flatten the brass against the aluminum muffler, then use a hard epoxy to hold the tube against the muffler and seal it so no gasses leak and back up inside the muffler.
So what do you guys think of my idea? I have several of the brass tubes if you are interested and the manufactures part number and address.
happydad.
![United States](/users/3015/29/34/60/smiles/651906019.gif)
So I decided to see if I could do this myself. Where I used to work 20 years ago we made HF, 2 to 30MHz, broadband Radio Equipment for 3rd world countries and I had used a brass tube similar to that on the snout of the old Cox Muffler. I have beed cleaning out the garage for various reasons, made $$ on 2 different OLD video games for ATARI 400, 800 Computer Systems, and I pretty much new about where the brass tubes were. I dug out a few different sizes, figured out the best one and sat down in a hot garage and came up with this, first the part.
![Cox Mufflers with Snout, GONE? Img_1910](https://i.servimg.com/u/f47/17/55/00/36/img_1910.jpg)
brass tube
![Cox Mufflers with Snout, GONE? Img_1911](https://i.servimg.com/u/f47/17/55/00/36/img_1911.jpg)
top side view 1
![Cox Mufflers with Snout, GONE? Img_1912](https://i.servimg.com/u/f47/17/55/00/36/img_1912.jpg)
bottom side view 1
![Cox Mufflers with Snout, GONE? Img_1915](https://i.servimg.com/u/f47/17/55/00/36/img_1915.jpg)
top side view 2
the outside diameter of the brass tube is about 1/4inch, so it is a little larger than the original Cox Muffler. I am trying to flatten the brass against the aluminum muffler, then use a hard epoxy to hold the tube against the muffler and seal it so no gasses leak and back up inside the muffler.
So what do you guys think of my idea? I have several of the brass tubes if you are interested and the manufactures part number and address.
happydad.
![RC Plane](/users/3015/29/34/60/smiles/1702820958.gif)
![Jeep](/users/3015/29/34/60/smiles/1819690042.png)
![Old Bugger](/users/3015/29/34/60/smiles/2238803017.gif)
![United States](/users/3015/29/34/60/smiles/651906019.gif)
happydad- Rest In Peace
- Posts : 1592
Join date : 2012-05-28
Age : 79
Location : Escondido, CA
Cribbs74- Moderator
Posts : 11906
Join date : 2011-10-24
Age : 50
Location : Tuttle, OK
Re: Cox Mufflers with Snout, GONE?
I don't think the epoxy will hold , can u solder it ?
![Small Cox Logo](/users/3015/29/34/60/smiles/7356.png)
getback- Top Poster
Posts : 10326
Join date : 2013-01-18
Age : 67
Location : julian , NC
Not to Aluminum.
getback wrote:I don't think the epoxy will hold , can u solder it ?![]()
getback: not to aluminum, very easily. Maybe with a spot welder, a small one. I will try the epoxy for now. They used to make an epoxy with little particles of metal or silver in it. Can’t remember what it was called. When I was in Japan some of the slot car guys used to use it on the motor armatures to cool them better.
Those were the days. Young and stupid, and all alone in Japan.
Happydad
![Jeep](/users/3015/29/34/60/smiles/1819690042.png)
![Old Bugger](/users/3015/29/34/60/smiles/2238803017.gif)
![United States](/users/3015/29/34/60/smiles/651906019.gif)
happydad- Rest In Peace
- Posts : 1592
Join date : 2012-05-28
Age : 79
Location : Escondido, CA
Re: Cox Mufflers with Snout, GONE?
happydad wrote:getback wrote:I don't think the epoxy will hold , can u solder it ?![]()
getback: not to aluminum, very easily. Maybe with a spot welder, a small one. I will try the epoxy for now. They used to make an epoxy with little particles of metal or silver in it. Can’t remember what it was called. When I was in Japan some of the slot car guys used to use it on the motor armatures to cool them better.
Those were the days. Young and stupid, and all alone in Japan.
Happydad![]()
![]()
Happydad,
Try using JB Weld.
I have used it on some old Aurora Mills engine crank cases. and on an O.S. carburetor and has held up for a few years.
Usually got the JB Weld at an auto parts store.
Here is my version of an extension:
I used a small section of copper tubing ( left over from tubing for the ice maker).
Using a 5mm tap and die, I made some threads on the copper tubing and tapped the Cox muffler section.
After threading the parts together, I used a small amount of JB Weld on the threads inside the muffler ring.
![Cox Mufflers with Snout, GONE? Img_0017](https://i.servimg.com/u/f13/20/19/65/06/img_0017.jpg)
![Cox Mufflers with Snout, GONE? Img_0019](https://i.servimg.com/u/f13/20/19/65/06/img_0019.jpg)
![Cox Mufflers with Snout, GONE? Img_0018](https://i.servimg.com/u/f13/20/19/65/06/img_0018.jpg)
sosam117- Diamond Member
- Posts : 1318
Join date : 2016-03-23
Location : Suburb of Chicago, Illinois
Re: Cox Mufflers with Snout, GONE?
Thats cool , is the lip inside the muffler housing already there for tapping or did you make that also ?
![Huh...](/users/3015/29/34/60/smiles/3929217648.gif)
getback- Top Poster
Posts : 10326
Join date : 2013-01-18
Age : 67
Location : julian , NC
Re: Cox Mufflers with Snout, GONE?
I think that is just a nut inside. Too bad a big pop rivet gun will not fit inside the muffler. It almost looks like the 3/16" rivet would work, and then the flare would hold it in. Some of those are aluminum too. I made something like that for a different motor that needed to have a larger hole. AP .15. Just threaded both the muffler and the insert. It stayed on so far. The pressure tap has unscrewed though. Another way to get the goop away is to just punch a hole in some silicone tubing and push the cylinder through it. Ace used to sell those.![Cox Mufflers with Snout, GONE? Ap_09_13](https://i.servimg.com/u/f44/20/04/01/64/ap_09_13.jpg)
![Cox Mufflers with Snout, GONE? Ap_09_13](https://i.servimg.com/u/f44/20/04/01/64/ap_09_13.jpg)
aspeed- Platinum Member
- Posts : 790
Join date : 2013-01-18
Location : Leamington Ont. Can.
Re: Cox Mufflers with Snout, GONE?
At second glance I have no idea what you have there. There are no cutouts whatsoever in that muffler.
Cribbs74- Moderator
Posts : 11906
Join date : 2011-10-24
Age : 50
Location : Tuttle, OK
Re: Cox Mufflers with Snout, GONE?
getback wrote:Thats cool , is the lip inside the muffler housing already there for tapping or did you make that also ?![]()
There is no lip inside the muffler housing. I just drilled out the hole for the 5mm tap and tapped the hole.
The wall of the muffler housing is thin, that is why I used a metric tap (more threads per mm (inch).
What looks like a lip is the JB weld (epoxy) and a "C" clip clipped onto the threads ( it looks like a nut).
sosam117- Diamond Member
- Posts : 1318
Join date : 2016-03-23
Location : Suburb of Chicago, Illinois
Re: Cox Mufflers with Snout, GONE?
This type of muffler with the plastic upper plate doesn't need an outlet as the upper plate flexes under exhaust pressure allowing exhaust gasses to escape. The ones with the spring clip around them are designed to lessen the restriction by opening up the exhaust when quietness is not required, and also allows the engine to be primed.
Oldenginerod- Top Poster
- Posts : 4000
Join date : 2012-06-15
Age : 61
Location : Drouin, Victoria
added pictures
Oldenginerod wrote:This type of muffler with the plastic upper plate doesn't need an outlet as the upper plate flexes under exhaust pressure allowing exhaust gasses to escape. The ones with the spring clip around them are designed to lessen the restriction by opening up the exhaust when quietness is not required, and also allows the engine to be primed.
I tried the JB Instant Weld last night, Saturday, but it wasn’t completely hardened, I will take some pics and post later tomorrow.
>>>>edited 9-6-2020 at 3:45p.m. PST.
![Cox Mufflers with Snout, GONE? Img_2010](https://i.servimg.com/u/f47/17/55/00/36/img_2010.jpg)
view 1
![Cox Mufflers with Snout, GONE? Img_2012](https://i.servimg.com/u/f47/17/55/00/36/img_2012.jpg)
view 2
I still need to clean up and add more JB. Tomorrow.
>>>>>>>edit completed
Record setting temperature today at 113 for my town. It was still 93F when wife went to bed hours ago. It is still 85F outside at 1:25a.m. PST.
Happydad.
![RC Plane](/users/3015/29/34/60/smiles/1702820958.gif)
![Jeep](/users/3015/29/34/60/smiles/1819690042.png)
![Hot](/users/3015/29/34/60/smiles/1260873930.gif)
![Hot](/users/3015/29/34/60/smiles/1485241470.gif)
![Hot](/users/3015/29/34/60/smiles/1485241470.gif)
![Hot](/users/3015/29/34/60/smiles/1485241470.gif)
![Old Bugger](/users/3015/29/34/60/smiles/2238803017.gif)
![United States](/users/3015/29/34/60/smiles/651906019.gif)
Last edited by happydad on Sun Sep 06, 2020 5:59 pm; edited 1 time in total (Reason for editing : to add pictures)
happydad- Rest In Peace
- Posts : 1592
Join date : 2012-05-28
Age : 79
Location : Escondido, CA
Re: Cox Mufflers with Snout, GONE?
happydad wrote:Oldenginerod wrote:This type of muffler with the plastic upper plate doesn't need an outlet as the upper plate flexes under exhaust pressure allowing exhaust gasses to escape. The ones with the spring clip around them are designed to lessen the restriction by opening up the exhaust when quietness is not required, and also allows the engine to be primed.
I tried the JB Instant Weld last night, Saturday, but it wasn’t completely hardened, I will take some pics and post later tomorrow.
Record setting temperature today at 113 for my town. It was still 93F when wife went to bed hours ago. It is still 85F outside at 1:25a.m. PST.
Happydad.![]()
![]()
![]()
![]()
![]()
![]()
![]()
Happdad,
It usually takes at least 24 hours for the JB Weld to harden up.
It may take longer with the high heat and humidity?
By the way, The muffler I have does not have a "plastic" upper plate.
It is spring steel and it seals tightly around the cylinder and only flexes downward to make a good and tight seal when the cylinder is screwed to the crank case..
![Cox Mufflers with Snout, GONE? Img_0020](https://i.servimg.com/u/f13/20/19/65/06/img_0020.jpg)
sosam117- Diamond Member
- Posts : 1318
Join date : 2016-03-23
Location : Suburb of Chicago, Illinois
Re: Cox Mufflers with Snout, GONE?
How about a spent .22 shell and some high temperature silicon RTV ?
Mike1484
Mike1484
Mike1484- Gold Member
- Posts : 301
Join date : 2011-10-28
Age : 75
Location : Northern Ohio
Re: Cox Mufflers with Snout, GONE?
J-B Weld
is The Original Cold Weld two-part epoxy system that provides strong, lasting repairs to metal and multiple surfaces. Mixed at a ratio of 1:1, it forms a permanent bond and can be shaped, tapped, filed, sanded and drilled after curing. At room temperature, J-B Weld
sets in 4-6 hours to a dark grey color. A full cure is reached in 15-24 hours. J-B Weld
has a tensile strength of 5020 PSI and sets to a hard bond overnight. It can withstand temperatures up to 550ºF when fully cured.
![:tm: ™](https://cdn.jsdelivr.net/emojione/assets/png/2122.png?v=2.2.7)
![:tm: ™](https://cdn.jsdelivr.net/emojione/assets/png/2122.png?v=2.2.7)
![:tm: ™](https://cdn.jsdelivr.net/emojione/assets/png/2122.png?v=2.2.7)
fredvon4- Top Poster
Posts : 4007
Join date : 2011-08-26
Age : 69
Location : Lampasas Texas
![-](https://2img.net/i/empty.gif)
» Medallion 049 snout
» Mufflers for Tee Dee .020
» What mufflers are these?
» Cox 049 / 051 Mufflers now available
» Cox mufflers
» Mufflers for Tee Dee .020
» What mufflers are these?
» Cox 049 / 051 Mufflers now available
» Cox mufflers
Page 1 of 1
Permissions in this forum:
You cannot reply to topics in this forum