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
» Black Hawk Models
by Marleysky Today at 9:37 pm

» Tach Race 2017 class photo!
by roddie Today at 9:08 pm

» Technical question
by wha-tah-hey Today at 9:01 pm

» Medallion 049 & Medallion 049; what is the difference?
by 1/2A Nut Today at 8:29 pm

» "Phred's Phault"
by roddie Today at 7:56 pm

» McCoy 36 Super Stunt
by Oldenginerod Today at 7:54 pm

» This is how shill-bidding works :)
by GallopingGhostler Today at 9:27 am

» Enya engines for sale :)
by Cox International Yesterday at 3:30 pm

» Black Widow Crankcase hole?
by fit90 Yesterday at 2:33 pm

» The Good...The REALLY Bad...but All will be Good again...
by Kim Yesterday at 10:29 am

Cox Engine of The Month
March-2017
roddie's

Product engine on one of his builds.



PAST WINNERS
CEF Traveling Engine

Tach Race 2017 Updates
Ready for Tach Race 2017?
Profile Scale Reed Speed
Gallery


Win This Engine!
The Traveling Prop

Just a couple of plain old Thimble Dromes

View previous topic View next topic Go down

Just a couple of plain old Thimble Dromes

Post  rsv1cox on Mon Mar 20, 2017 9:27 am

For no particular reason.

Got these several months ago. I have always been partial to the early tapered thin walls with Thimble Drome embossed on the fuel tank. Boiled one and assembled it as it came with the same gaskets and copper star reed. Got lots of compression pop.

The other one with the vent/filler extensions, not so much pop, both primed with after run oil. I will probably clean that one up later. Interesting mods with the tubing extensions secured with fuel line. The PO extended the NV with a soldered on wire and even finished the end off with a dot of solder. Attention to detail.





I kept the castor soaked firewall and may scratch something out al la roddie and use it again.

Bob

avatar
rsv1cox
Diamond Member
Diamond Member

Posts : 2134
Join date : 2014-08-18
Location : West Virginia

View user profile

Back to top Go down

Re: Just a couple of plain old Thimble Dromes

Post  Mark Boesen on Mon Mar 20, 2017 12:51 pm

Bob, the one on the left with the black rubber spinner and early Thimble-Drome nylon prop was used on the first PT-19 for a couple years before they switched to red, probably where it came from. The prop and spinner are not real commonly available.
avatar
Mark Boesen
Top Poster
Top Poster

Posts : 3212
Join date : 2011-09-01
Age : 58
Location : Rockford, IL

View user profile http://groups.yahoo.com/group/049Collectors/

Back to top Go down

Re: Just a couple of plain old Thimble Dromes

Post  rsv1cox on Mon Mar 20, 2017 3:19 pm

Thanks Mark,  That's good to know.  I will make a note of it and stick it in the bag along with the engine. I normally replace all the gaskets but try to save the copper star reeds if they are in good shape.  This one was perfect in all regards.  I didn't go all out with it by polishing the tank etc. just left it as original as possible.  But I did trash the spring starter that came on it.  Nasty.

I'm always confused about the reeds.  In my rather moderate history with these I have always found the early star/copper reeds to work best.  I haven't had the best results with the various mylar and other reeds.

Bob

PS: Found some pictures of it when arrived:







Must have been my Cox day. Smile




Last edited by rsv1cox on Mon Mar 20, 2017 3:33 pm; edited 1 time in total (Reason for editing : Add pictures)
avatar
rsv1cox
Diamond Member
Diamond Member

Posts : 2134
Join date : 2014-08-18
Location : West Virginia

View user profile

Back to top Go down

Re: Just a couple of plain old Thimble Dromes

Post  Mark Boesen on Mon Mar 20, 2017 5:01 pm

A quick fix for the tank and actually prefered then the 'over-polished' look, is to lightly chuck the airtube of tank in a drill and lightly hit it with fine sandpaper and WD-40, this will take any surface oxidation off and recreate the factory machined look. This also works great on glowheads as you actually take very little material off the surface.

Here's the white replacement props, the OEM were the first versions Thimble-Drome made. Cox used to use Kaysun props, probably figured it was more profitable to make their own.
avatar
Mark Boesen
Top Poster
Top Poster

Posts : 3212
Join date : 2011-09-01
Age : 58
Location : Rockford, IL

View user profile http://groups.yahoo.com/group/049Collectors/

Back to top Go down

Re: Just a couple of plain old Thimble Dromes

Post  rsv1cox on Tue Mar 21, 2017 7:11 am

I have a couple of those white replacement props.

The Cox came with the items visible in picture 2 above, $15 as I recall. My plan as always is to clean it enough to run it then disassemble, clean again and bag it. I will probably replace the starter spring with a new one.

I will try your method of cleaning the tanks exterior. I tried this once before only using fine steel wool and a light oil. Even after a long A/F boil caked on castor remained in the valleys of the case. I don't like to use aggressive measures to clean those aluminum cases as they dull/scratch easily. Maybe some Hoppees #9 will help.

Hopefully I can scratch out an airplane for the other Cox keeping the vent/filler and needle extensions. I would think the previous owner had it in a model that incorporated a cowl.

Bob
avatar
rsv1cox
Diamond Member
Diamond Member

Posts : 2134
Join date : 2014-08-18
Location : West Virginia

View user profile

Back to top Go down

Re: Just a couple of plain old Thimble Dromes

Post  Sponsored content


Sponsored content


Back to top Go down

View previous topic View next topic Back to top

- Similar topics

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