Cox Engines Forum
You are not logged in! Please login or register! Guests are limited to posting in the "General Questions (Guest Posting Allowed)" section only. Becoming a member is fast, easy and FREE!


Log in

I forgot my password

Search
 
 

Display results as :
 


Rechercher Advanced Search

Latest topics
» Cox Tee Dee 0.10
by 1/2A Nut Today at 4:57 am

» Cox Pee Wee engine kit #110 instructions
by Jason_WI Yesterday at 10:50 pm

» Old Cox 049 will not hold RPM
by RknRusty Yesterday at 9:18 pm

» 150,000 Posts!
by RknRusty Yesterday at 7:05 pm

» Sterling engine
by Oldenginerod Yesterday at 6:08 pm

» Mystery motor
by Oldenginerod Yesterday at 5:57 pm

» Picked up something cool today
by 66 Malibu Yesterday at 5:34 pm

» $15 Space Bug
by rsv1cox Yesterday at 3:07 pm

» BHM Mosquito in MS-build
by londke3 Yesterday at 2:46 pm

» Rare cox ??
by ticomareado Yesterday at 12:15 pm

Cox Engine of The Month
April-2018
706jim's

"Pee Wee powered witch"



PAST WINNERS
Speed Contest 2018
CEF Traveling Engine

Win This Engine!
The Traveling Prop
Gallery


World of Aviation

Golden Bees from the Sturbridge trip...

Go down

Golden Bees from the Sturbridge trip...

Post  roddie on Tue Dec 26, 2017 3:02 pm

These two engines share a peculiar "damage" between them. Both of them have damage to the bottom tank-vent. Huh...



I don't know their history. They were included in a bag of 10 "used" .049 engines.. mostly Cox.. but also a couple of Testors/McCoy rotary-valve engines.

One of the GB's had it's tank mounted 90 degrees from normal.. and the other had a Tee Dee glowhead installed.. Huh... Huh...

Both engines have #2 cylinders.. and the "standard" (Babe Bee size) air-intake.



Well.. I'd been wanting to further-inspect these engines ever since sourcing them.. so I took them apart this afternoon. What I found; surprised me a bit..






That engine doesn't look like it's ever seen a drop of fuel..

Here's the other one.. not quite as clean.. but a LOT cleaner than I would have expected.





These engines both show "external" signs of being run. The gold anodizing is worn-off where the starter-spring contacts the nose of the crankcase.. and there are the tell-tale "scratches" of mounting-screws on the tank-anodizing.

One has a "tight-spot" in its cylinder-bore. I'll have to see if I can lap it out. It seems to be above the exhaust-ports though.. Huh...



avatar
roddie
Top Poster
Top Poster

Posts : 5858
Join date : 2013-07-17
Age : 58
Location : N. Smithfield, Rhode Island

View user profile http://www.stilburnin.com

Back to top Go down

Re: Golden Bees from the Sturbridge trip...

Post  Tee Bee on Tue Dec 26, 2017 3:42 pm

If the vent tube is loose in the tank, some carefully applied J-B Weld should cure it.  I did that on a Black Widow some years back and it held pretty well.  I've found J-B Weld to be glow fuel-proof and have also used it to attach clunk weights to brass tubes in my 1oz fuel tanks.
avatar
Tee Bee
Gold Member
Gold Member

Posts : 412
Join date : 2011-08-25
Location : Angleton, TX

View user profile

Back to top Go down

Re: Golden Bees from the Sturbridge trip...

Post  Jason_WI on Tue Dec 26, 2017 3:56 pm

Vent tubes can be pushed back out of the tanks and replaced. You can make vent tubes by sanding down a section of aluminum tubing. They wouldn’t be gold anodized though.
avatar
Jason_WI
Diamond Member
Diamond Member

I Support My Forum

Posts : 2224
Join date : 2011-10-09
Age : 42
Location : Neenah, WI

View user profile

Back to top Go down

Re: Golden Bees from the Sturbridge trip...

Post  Cribbs74 on Wed Dec 27, 2017 12:19 am

As long as they don’t cause a tank leak they will work fine as is. Not knowing the history, the front ends could be used, tanks could have been cleaned out, new rebuild kits installed and new backplates. Looks like some sealer was used on the gaskets so they have been apart at one time. The possibilities are endless.
avatar
Cribbs74
Moderator

Trusted Seller
Posts : 9677
Join date : 2011-10-24
Age : 44
Location : Tuttle, OK

View user profile

Back to top Go down

Re: Golden Bees from the Sturbridge trip...

Post  MauricioB on Wed Dec 27, 2017 9:20 am

Roddie, I'm glad to see that you're better! ... I'll tell you a solution that I do in these cases.
I take a spoke from a bicycle wheel, I adjust it well, I hit it by inserting it into the tube and the aluminum tube expands, then I extract the bicycle beam.
I give temperature to the aluminum tank with heat gun, and I incerto the expanded tube, when the tank cools it compresses the modified tube! Chau leaks! Solved theme friend!


avatar
MauricioB
Diamond Member
Diamond Member

Posts : 1543
Join date : 2016-02-16
Age : 47

View user profile

Back to top Go down

Re: Golden Bees from the Sturbridge trip...

Post  Tee Bee on Wed Dec 27, 2017 10:49 am

Brilliant solution, Mauricio!
avatar
Tee Bee
Gold Member
Gold Member

Posts : 412
Join date : 2011-08-25
Location : Angleton, TX

View user profile

Back to top Go down

Re: Golden Bees from the Sturbridge trip...

Post  MauricioB on Wed Dec 27, 2017 8:47 pm

Tee Bee wrote:Brilliant solution, Mauricio!

Thanks friend!!
It is advisable to place some fat in the bicycle beam, so that it is easier to extract later.
Placing a washer between the beam and the tube, then allows us to use the washer to retain the tube, without having to force the tube and deform it accidentally, it works, it really works! Very Happy Beer Cheers

avatar
MauricioB
Diamond Member
Diamond Member

Posts : 1543
Join date : 2016-02-16
Age : 47

View user profile

Back to top Go down

Re: Golden Bees from the Sturbridge trip...

Post  roddie on Thu Dec 28, 2017 3:19 am

MauricioB wrote:Roddie, I'm glad to see that you're better! ... I'll tell you a solution that I do in these cases.
I take a spoke from a bicycle wheel, I adjust it well, I hit it by inserting it into the tube and the aluminum tube expands, then I extract the bicycle beam.
I give temperature to the aluminum tank with heat gun, and I incerto the expanded tube, when the tank cools it compresses the modified tube! Chau leaks! Solved theme friend!



That's a very interesting method/fix Mauricio! Thank You for sharing!
avatar
roddie
Top Poster
Top Poster

Posts : 5858
Join date : 2013-07-17
Age : 58
Location : N. Smithfield, Rhode Island

View user profile http://www.stilburnin.com

Back to top Go down

Re: Golden Bees from the Sturbridge trip...

Post  dckrsn on Fri Dec 29, 2017 10:54 pm

Mauricio, thank you!!
I do have an 8cc tank that leaks, and I thought sealing it from the
inside was my only solution. The technique you posted is pure genius.
I also have access to liquid nitrogen, perhaps to shrink the vent/fill tubes.
A new year hug for you!! Thumbs Up
Bob
avatar
dckrsn
Diamond Member
Diamond Member

Posts : 1853
Join date : 2010-10-21
Age : 65
Location : Long Island, New York

View user profile

Back to top Go down

Re: Golden Bees from the Sturbridge trip...

Post  Admin on Fri Dec 29, 2017 11:14 pm

Great idea on expanding the vent tubes Mauricio!  Clapping

If you make a new thread on how-to tighten/seal the vent tubes, I'll make it a sticky. Or, this thread can be retitled.

Nice GB finds Roddie Thumbs Up

_________________
-Jacob


avatar
Admin
Administrator

Posts : 4572
Join date : 2010-07-27
Location : Roseville, Minnesota

View user profile http://sites.google.com/site/coxenginecollection/

Back to top Go down

Re: Golden Bees from the Sturbridge trip...

Post  MauricioB on Fri Dec 29, 2017 11:33 pm

dckrsn wrote:Mauricio, thank you!!
I do have an 8cc tank that leaks, and I thought sealing it from the
inside was my only solution. The technique you posted is pure genius.
I also have access to liquid nitrogen, perhaps to shrink the vent/fill tubes.
A new year hug for you!! Thumbs Up
Bob

In everything that can help and give my opinion, friend, count on me, I feel happy here ..! Small Cox Logo Christmas Tree cheers cheers
avatar
MauricioB
Diamond Member
Diamond Member

Posts : 1543
Join date : 2016-02-16
Age : 47

View user profile

Back to top Go down

Re: Golden Bees from the Sturbridge trip...

Post  MauricioB on Fri Dec 29, 2017 11:36 pm

Admin wrote:Great idea on expanding the vent tubes Mauricio!  Clapping

If you make a new thread on how-to tighten/seal the vent tubes, I'll make it a sticky. Or, this thread can be retitled.

Nice GB finds Roddie Thumbs Up

Thank you Jacob ... we are 15,000 km away, believe me I thank you from the heart for this forum that integrates many PEOPLE of good, is a forum in which I am honored to participate.
Count on me for what you need, if you want to create a new thread we do it with pleasure!
A hug for you!
avatar
MauricioB
Diamond Member
Diamond Member

Posts : 1543
Join date : 2016-02-16
Age : 47

View user profile

Back to top Go down

Re: Golden Bees from the Sturbridge trip...

Post  getback on Sat Dec 30, 2017 10:23 am

Great idea my friend !! I agree when trying to find solutions to problems sometimes are buried in threads that can bee very hard to find !?? Small Cox Logo
avatar
getback
Top Poster
Top Poster

Posts : 4701
Join date : 2013-01-18
Age : 60
Location : julian

View user profile

Back to top Go down

Re: Golden Bees from the Sturbridge trip...

Post  Sponsored content


Sponsored content


Back to top Go down

Back to top

- Similar topics

 
Permissions in this forum:
You cannot reply to topics in this forum