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


Display results as :

Rechercher Advanced Search

Latest topics
» On the Ramp Right Now: The Pietenpol Reunion at Brodhead, Wisconsin
by Marleysky Today at 11:35 am

» Making a Starter for Cox Engines
by Levent Suberk Today at 10:05 am

» Apropos of Nothing
by getback Today at 9:39 am

» Happy day Friend!
by MauricioB Yesterday at 10:59 pm

» Aluminium fuel tanks for Cox Tee Dee .010 & .020
by 1/2A Nut Yesterday at 2:30 am

» Surestart Engine Technical Drawing
by GallopingGhostler Fri Jul 20, 2018 8:32 pm

» 1975 Kawasaki KT250
by Cribbs74 Fri Jul 20, 2018 11:26 am

by MauricioB Thu Jul 19, 2018 10:46 pm

» I Feel Good!!!!!!
by MauricioB Thu Jul 19, 2018 10:24 pm

» some star flowers ...
by MauricioB Thu Jul 19, 2018 10:23 pm

Cox Engine of The Month

"Tee Dee .020"

Speed Contest 2018
CEF Traveling Engine

Win This Engine!
The Traveling Prop

World of Aviation

Cleaning Gummed Cox Engines

Go down

Cleaning Gummed Cox Engines

Post  Darren19 on Sat Apr 20, 2013 9:24 am

I have heard of many ways to degum and clean seized cox engines after storage. Alcohol, denatur alcohol, boiling, anti freeze etc. what is the best and most effective way to degum and clean a cox engine?

Back to top Go down

Re: Cleaning Gummed Cox Engines

Post  Mark Boesen on Sat Apr 20, 2013 9:53 am

There are many ways to clean engines and most work great, its a matter of personal preference and whats on hand. I'd suggest not soaking engines for extended lengths in brake fluid or alcohol as those absorb moisture and may cause corrosion.
Mark Boesen
Top Poster
Top Poster

Posts : 3578
Join date : 2011-09-01
Age : 60
Location : Rockford, Il

View user profile

Back to top Go down

Re: Cleaning Gummed Cox Engines

Post  SuperDave on Sat Apr 20, 2013 10:03 am

A through soaking in Hoppe's #9 Gun Cleaning Solvent and the application of mild heat has worked well for me.

Essential is allowing time for the solvent to work rather than rush the operation.

Also using the appropriate Cox wrench and properly fitting screwdrivers is recommended. (See the "search" function because this has been discussed here many times.) Go to: Cleaning)


Top Poster
Top Poster

Posts : 3552
Join date : 2011-08-13
Location : Washington (state)

View user profile

Back to top Go down

Re: Cleaning Gummed Cox Engines

Post  jsesere on Sat Apr 20, 2013 9:31 pm

Here are some tips for cleaning.
For removing dried up Castro oil and fuel and cleaning the inside of the cylinder and other internal parts any 15% nitro fuel or better and a good stiff toothbrush or a Q-Tip works. I buy medical or dental grade because they are stiffer and don't fall apart that easily.
If you take a bright flashlight you can shine it down the needle valve opening on a radial back plate and look through the venturi to check for clogging. A sewing needle works great for clearing it. Glow heads tops can be cleaned by chucking one up in a Dremel and using 320B waterproof sandpaper or something similar.
For polishing the silver colored parts Mother's Mag and Aluminum Cleaner is the hot ticket. For back plates I use Wight's Copper Cream and a Q-Tip.

Rest In Peace
Rest In Peace

Trusted Seller
Posts : 1606
Join date : 2010-09-05
Location : Salem Oregon

View user profile

Back to top Go down

Re: Cleaning Gummed Cox 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