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!


Help Identifying Engines Babe_b10
Log in

I forgot my password

Search
 
 

Display results as :
 


Rechercher Advanced Search

Latest topics
» "Midway" the 2019 movie trailer
by NEW222 Today at 9:05 pm

» 3D printed beam mount .049 backplate
by 1/2A Nut Today at 8:52 pm

» Castor Oil with 30% Nitro 23% Synthetic
by Ken Cook Today at 7:48 pm

» Cox 15 piston reset tool loaner program
by Jason_WI Today at 6:49 pm

» GSCB field is no more
by Jason_WI Today at 5:04 pm

» Ohlsson & Rice .75
by modelbuilder49 Today at 2:14 pm

» Diesel Noob
by Surfer_kris Today at 2:04 pm

» Hopping Up a Stock Medallion .049
by aspeed Today at 1:32 pm

» The Strato Bug -Identifying originality
by balogh Today at 1:07 pm

» Cox Spyder/ Queen Bee 074
by Surfer_kris Today at 12:21 pm

Cox Engine of The Month
October-2019
colibriguitars's

Dieselized .049 with no Teflon disk or o-rings.

More info on this engine!



PAST WINNERS
CEF Traveling Engine

Win This Engine!
The Traveling Prop
Gallery


Help Identifying Engines Empty
World of Aviation

Help Identifying Engines

Go down

Help Identifying Engines Empty Help Identifying Engines

Post  Mopho12 on Sun Jun 09, 2019 6:34 pm

Hi, I’m not sure if this is the right sub to be posting this in so if it’s not than I apologize in advance. My dad bought 5 plane engines at a flea market and after doing a google search on the two that had any kind of writing on them they seem to all be Fox engines. Was hoping someone out there could help me identify them as 3 of them don’t have any words on them that I can tell except for “Made in USA” on the screwplate area.

The two that I’ve been able to identify, at least generally, are the big one pictured that is stamped “FOX 36X” and the smaller one without a propeller attached that is stamped “THIMBLE DROME”. From my searches it seems like most engine models came in a variety of displacements, but I have no idea how to tell what displacement these are.

To be honest, I know next to nothing about these engines or model engines in general so any information would be greatly appreciated especially information related to their age, identity, collectibility, etc.

There were too many photos to upload directly so they are all in an imgur album that is available here https://imgur.com/a/o1cbUre Sorry if the photos don’t give enough information feel free to ask for anymore.

Thank you for reading!
Mopho12
Mopho12
New Member
New Member

Posts : 4
Join date : 2019-06-09

Back to top Go down

Help Identifying Engines Empty Re: Help Identifying Engines

Post  EXModelEngines on Sun Jun 09, 2019 6:48 pm

Great group of folks here who can help pinpoint many different attributes. Here are some basics.

#1 - Cox Chaparral or Corvette .049 engine, but I believe the former based on the needle stem (1960's)
#2 - Cox .049 product engine with 'postage stamp' backplate. Used in a RTF C/L plane, probably something like the P-51 Mustang (1960's)
#3 - Cox Babe Bee .049, early think neck case, probably early 1960's.
#4 - Fox .36 C/L engine. Fox guys will chime in on era I would suspect.
#5 - Cox .049 product engine with 'horseshoe' backplate. Used in a RTF C/L plane, looks late 1960's / early 1970's.

Matt
EXModelEngines
EXModelEngines
Platinum Member
Platinum Member

Official Cox Dealer
Posts : 659
Join date : 2011-06-07
Location : Central CT, USA

http://www.exmodelengines.com

Back to top Go down

Help Identifying Engines Empty Re: Help Identifying Engines

Post  Mopho12 on Sun Jun 09, 2019 7:14 pm

Thanks!

So the the one you identified as the Cox Corvette engine is the one that has Thimble Drome stamped on it with two stars as spacers between the words. Did they use the Thimble Drome engines in RTF planes? When I originally googled it it said they were never put into mass production so was just curious.
Mopho12
Mopho12
New Member
New Member

Posts : 4
Join date : 2019-06-09

Back to top Go down

Help Identifying Engines Empty Re: Help Identifying Engines

Post  Ken Cook on Sun Jun 09, 2019 7:19 pm

The Fox .36X was a combat engine. Yours still has the venturi restrictor in place indicating it was used with a tank vs a pen bladder which would've been period correct for the time.This is a ball raced and bushed crankshaft. The .36X replaced the .35X with a few changes such as the slanted glow plug and some additional case gusseting. Rules were changing and .36 now was the max displacement. This took place in and around 1963. The X version combat engines were later superseded by the Mark version engines. The first Mark series was known as the Baldie due to no cylinder fins on the head. Duke Fox altered the mold castings from the .36X to make provisions for the newer Mark series which meant the end for any new .36X cases. I use the .36 X nowadays for vintage combat, they're fun old engines that are loud and are quite fast for what they are.
Ken Cook
Ken Cook
Top Poster
Top Poster

Posts : 3636
Join date : 2012-03-27
Location : pennsylvania

Back to top Go down

Help Identifying Engines Empty Re: Help Identifying Engines

Post  Mopho12 on Sun Jun 09, 2019 7:39 pm

That’s awesome! Thanks Ken! Even if we never get any use of these it’s so much fun to get to know the history and stories behind them. Are these collectible or were they to mass produced to be that valuable to collectors?
Mopho12
Mopho12
New Member
New Member

Posts : 4
Join date : 2019-06-09

Back to top Go down

Help Identifying Engines Empty Re: Help Identifying Engines

Post  ticomareado on Sun Jun 09, 2019 8:23 pm

If you're lucky you might get the .36X cleaned and lubed up to running condition w/o disassembly. Put a wad of plastic wrap topped with Silly Putty in air intake and exhaust before giving a good external scrubbing with Simple Green, Dawn dish detergent, acetone etc. Then remove NV-spray bar assembly for good soaking in acetone, clean up details with Q tips in solvent etc, apply lube in glow plug hole and intake and heat to free up hopefully.
ticomareado
ticomareado
Platinum Member
Platinum Member

Posts : 849
Join date : 2013-10-03
Location : NC

Back to top Go down

Help Identifying Engines Empty Re: Help Identifying Engines

Post  Ken Cook on Sun Jun 09, 2019 8:28 pm

Well, to some one like myself and those that use them, yes they carry merit in terms of needing them. In general, condition is everything and these engines were typically run hard. They were produced for nearly 10 years. Parts supplies though are far and few. New in the box examples generally fetch about $100-$150 but used examples like yours are considerably lower. Larry Scarinzi is a combat flyer from the early years who would rework these engines for the combat guys. He also worked with Duke to improve on this design. I see Larry a few times a year and he still flies even being in his mid 80's. I saw him a few months ago and I happened to notice he wasn't flying. Rusty who's a moderator here on the forum was recently gifted one of Larry's designs never kitted the Super Satan using the Fox .36x. https://www.youtube.com/watch?v=4QIh6-DH7UA

        I will add, the engine will ABSOLUTELY need to be taken apart if you decide to run it. The bearing more than likely is gummed up and if not properly cleaned, the crankshaft will spin inside the race which will destroy the crankshaft and possibly engine, I have seen this multiple times. In addition, the rod on the top end needs to be freed up on the conrod. The wrist pin will egg out the holes in the piston otherwise  in very short order if not properly dealt with. At this stage, it would be strongly advised to replace the bearing as they're not as expensive as replacing a engine. I have had some bearings clean up to the point of useable but that's not always the situation.
Ken Cook
Ken Cook
Top Poster
Top Poster

Posts : 3636
Join date : 2012-03-27
Location : pennsylvania

Back to top Go down

Help Identifying Engines Empty Re: Help Identifying Engines

Post  Cribbs74 on Sun Jun 09, 2019 9:23 pm

Mopho,

Do you have any pictures you can post? Seeing is much better when trying to help. BTW Ken knows his stuff with the older Combat engines. Just listen and learn.
Cribbs74
Cribbs74
Moderator

2019 Supporter

Trusted Seller
Posts : 10549
Join date : 2011-10-24
Age : 45
Location : Tuttle, OK

Back to top Go down

Help Identifying Engines Empty Re: Help Identifying Engines

Post  Mopho12 on Sun Jun 09, 2019 9:26 pm

Cribbs,

It wouldn’t let me upload more than 2 pictures into my post so I put them in an imgur album here https://imgur.com/a/o1cbUre

And I agree, Ken, and everyone so far has been incredibly helpful! I really wasn’t expecting this many responses this soon. I’m glad there is a very active community! It’s never been a hobby I’ve done much research into but my dad has always been at least mildly curious hence why he purchased them. I doubt we’ll ever try to put them into a plane but getting them restored and running would be cool!
Mopho12
Mopho12
New Member
New Member

Posts : 4
Join date : 2019-06-09

Back to top Go down

Help Identifying Engines Empty Re: Help Identifying Engines

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