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Post  daviddiag on Wed Apr 18, 2012 6:29 pm

I have several old baby bees that are stuck after being stored for many years. They were good when stored. what is best way to free and clean them
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Post  Jason_WI on Wed Apr 18, 2012 7:15 pm

Heat them up with a hair dryer, heat gun or a small torch.

Remove the tank or backplate. Bolt on a junk prop. Find a heavy leather glove to hold the hot engine. Heat them up untill it just starts to smoke a little bit then work the crankshaft back and forth until is starts to move. Do not apply too much force or you will bend a rod or break the crank pin.

Once moving add some light oil or glow fuel to break down the castor.

Once I have them moving I usually do a total break down then soak in denatured alcohol for an hour. Then take a tooth brush to remove all the congealed castor from the parts.

Reassemble with new gaskets and reed if needed.

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Post  gcb on Wed Apr 18, 2012 7:26 pm

The first thing I would do is remove the glow head and the backplate screws that hold it together. Next squirt a little fuel on top of the piston and inside the cylinder on the piston ball socket and crankshaft. Allow a few seconds for the fuel to penetrate, then try to turn the crankshaft. If there is no rust, it should turn over.

You then should remove the needle and the reed assembly and clean them with fuel. Make sure congealed fuel is removed from the venturi spraybar.

If it is just castor causing it to be stuck, fuel will allow things to unstick.

Apply some light machine oil and reassemble.

George
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Post  mitchg95 on Wed Apr 18, 2012 7:34 pm

gcb wrote:The first thing I would do is remove the glow head and the backplate screws that hold it together. Next squirt a little fuel on top of the piston and inside the cylinder on the piston ball socket and crankshaft. Allow a few seconds for the fuel to penetrate, then try to turn the crankshaft. If there is no rust, it should turn over.

You then should remove the needle and the reed assembly and clean them with fuel. Make sure congealed fuel is removed from the venturi spraybar.

If it is just castor causing it to be stuck, fuel will allow things to unstick.

Apply some light machine oil and reassemble.

George

yup thats the way i do it the engines that i get that are frozen, works wonders for me
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Post  dckrsn on Wed Apr 18, 2012 7:49 pm

Get yourself a pair of wrenches if you dont have them.
If you use pliers, you could be banned from the forum. lol!
Bob
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Post  gcb on Thu Apr 19, 2012 10:23 am

dckrsn wrote:Get yourself a pair of wrenches if you dont have them.
If you use pliers, you could be banned from the forum. lol!
Bob

AMEN!

George
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Post  SuperDave on Thu Apr 19, 2012 11:59 am

Remember that crankshafts as well as pistons may be "frozen" by castor oil residue. A good soaking, like overnite, usually frees the parts.

I recommend Hoppe's #9 Gun Cleaning solvent for the soak.
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Post  nitroairplane on Thu Apr 19, 2012 12:38 pm

gcb wrote:
dckrsn wrote:Get yourself a pair of wrenches if you dont have them.
If you use pliers, you could be banned from the forum. lol!
Bob

AMEN!

George
Yes AMEN.
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Post  SuperDave on Thu Apr 19, 2012 12:47 pm

Let's be clear, lads. Cox "spanner style" wrenches specifically designed for a particular sized engine displacement. There is no "universal wrench" for Cox engines.

They are best used in pairs rather than as singles. Cox engines have them as standard equipment when new.
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Post  dankar04 on Thu Apr 19, 2012 1:31 pm

Trying to take part a froze engine cold will give you grief. I have/ bought/sold/traded well over a hundred Cox engine and have not had any problem with taking them apart. I do not buy rusted or out right abused engines. Liquid wrench/ monocote heat gun/ tranny fluid and correct tools and your good to go. Soaking in denatured alky helps also. Old dried castor get hard and not easy to remove. .45 cal bore brush cleans those liners just fine. Babe Bee
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Post  Ivanhoe on Thu Apr 19, 2012 2:29 pm

dankar04 wrote: I do not buy rusted or out right abused engines.. Babe Bee

I do, anybody got any? lol!
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Post  nitroairplane on Thu Apr 19, 2012 2:39 pm

Ivanhoe wrote:
dankar04 wrote: I do not buy rusted or out right abused engines.. Babe Bee

I do, anybody got any? lol!
Anderson spitzy.
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Post  dankar04 on Thu Apr 19, 2012 2:56 pm

One good thing about castor is that it protects inside of engines. Even rusted engines can be brought back to life. For personel use a rusted engine is fine. Depends on ehat you like. I have a good friend in England who has a bunch of my small engines. Just sent him a very potent Webra 1.cc Diesel.
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Post  andrew on Thu Apr 19, 2012 5:24 pm

dankar04 wrote:......................Liquid wrench/ monocote heat gun/ tranny fluid and correct tools and your good to go. Soaking in denatured alky helps also. Old dried castor get hard and not easy to remove. .45 cal bore brush cleans those liners just fine. Babe Bee

+1

I also soak in acetone --- the small plastic tupperware tubs with a screw on top work great. Large enough to lay an engine in, but small enough not to take a lot of acetone to cover --- and the screw on top seals in the odor and stops evaporation.

I also keep a tub just for the nozzels on my CA bottles. I keep a spare nozzle that has not had the tip clipped off and use it to cap the bottle when I'm finished at the building board. I drop the one I had been using into the acetone tub and it's completely clean when I'm ready to use it again. I keep several sections of small ID teflon tubing on hand to stick in the end of the spout. This gives me greater reach and the small ID provides good control when gluing -- it also goes into the acetone soak at the end of the day.
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Post  daviddiag on Sun Apr 22, 2012 12:56 pm

I got all five of them apart and cleaned up nicely. PB Blaster, patience, brass brush, patience, soaking, patience, elbow grease, patience. NO PLIERS!!!! BUT, BUT, BUT, NO PLIERS DUMMY! They will kick you out of the forum!!!!!

Thank you, my new found friends,
David
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Post  nitroairplane on Sun Apr 22, 2012 1:08 pm

daviddiag wrote:I got all five of them apart and cleaned up nicely. PB Blaster, patience, brass brush, patience, soaking, patience, elbow grease, patience. NO PLIERS!!!! BUT, BUT, BUT, NO PLIERS DUMMY! They will kick you out of the forum!!!!!

Thank you, my new found friends,
David
That is good to hear.
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