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Barn find rebuild, meet the screaming phoenix
Page 1 of 2
Page 1 of 2 • 1, 2 
Barn find rebuild, meet the screaming phoenix
OVERLORD Wed Aug 13, 2014 2:31 pm
I took apart the barn find engine I got in a lot of 8 reed 049's. This engine is equipped with a muffler and a Kavan tank extender. The engine was locked solid, crankshaft as well as piston could not be moved.
I had everything soaked in a jam jar filled with alcohol, then cleaned the parts with a tooth brush. In order to free the piston and crankshaft, the crankcase was just placed on the jaws of my vice and the cylinder was heated with a small gas torch. Because of the muffler, the cylinder could not be reached very well. It took a few heating sessions to free the lot.
When dismantling the cylinder piston, the exhaust ports and bypass ports were visible on the piston, due to the position where it sat for years.
I am waiting for a gasket set that is on its way. I also replaced the prop bolt as the old one was bent. There is some play on the ball joint as well.
Lieven
I had everything soaked in a jam jar filled with alcohol, then cleaned the parts with a tooth brush. In order to free the piston and crankshaft, the crankcase was just placed on the jaws of my vice and the cylinder was heated with a small gas torch. Because of the muffler, the cylinder could not be reached very well. It took a few heating sessions to free the lot.
When dismantling the cylinder piston, the exhaust ports and bypass ports were visible on the piston, due to the position where it sat for years.
I am waiting for a gasket set that is on its way. I also replaced the prop bolt as the old one was bent. There is some play on the ball joint as well.
Lieven
OVERLORD- Diamond Member
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Location : Normandy, France
Barn find rebuild
Davenz13 Wed Aug 13, 2014 2:57 pm
GO Lieven!
That's what I like doing, taking something that's looks trashed and fixing it. It's usually cheaper, sometimes, occasionally,well maybe
Sometimes I look back and think I could have got a new one in the box for what I've spent on that 
but you can't buy the pleasure of looking at something that was trashed and now due to your efforts it's completely serviceable again 
That's what I like doing, taking something that's looks trashed and fixing it. It's usually cheaper, sometimes, occasionally,well maybe
Sometimes I look back and think I could have got a new one in the box for what I've spent on that but you can't buy the pleasure of looking at something that was trashed and now due to your efforts it's completely serviceable again 
Davenz13- Platinum Member
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Re: Barn find rebuild, meet the screaming phoenix
dckrsn Wed Aug 13, 2014 5:16 pm
Good stuf Lieven!
Preserving history.
Bob
Preserving history.
Bob
Last edited by dckrsn on Wed Aug 13, 2014 8:40 pm; edited 1 time in total
dckrsn- Diamond Member
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Re: Barn find rebuild, meet the screaming phoenix
roddie Wed Aug 13, 2014 6:55 pm
Nice Job Lieven! Like Dave mentioned; There's nothing like the satisfaction you get, when you restore something that's been neglected! The fuel pick-up looks good too.. I'll bet that this engine wasn't run too many times. Are the other 7 engines in similar condition?
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Re: Barn find rebuild, meet the screaming phoenix
Theo Kleynhans Thu Aug 14, 2014 12:33 am
Very nice Lieven
Great to see this work on a ald engine.
Hope to see it run soon.
Theo
Great to see this work on a ald engine.
Hope to see it run soon.
Theo
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Re: Barn find rebuild, meet the screaming phoenix
navion34 Thu Aug 14, 2014 6:49 am
Good job Lieven !
With a Kavan kit, this is now an unusal setup.
With a Kavan kit, this is now an unusal setup.
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Re: Barn find rebuild, meet the screaming phoenix
Aero Thu Aug 14, 2014 9:13 am
Isn't it amazing how tough these engines are? That is going to be a nice engine when you are done.
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Re: Barn find rebuild, meet the screaming phoenix
Kim Thu Aug 14, 2014 9:17 am
Great Save Lieven!!!!!!!!
Bring'm back from the edge and make'm bark !!!!!!!
Bring'm back from the edge and make'm bark !!!!!!!
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Re: Barn find rebuild, meet the screaming phoenix
OVERLORD Thu Aug 14, 2014 11:09 am
Thanks for your comments. Below the other 7 engines:
2 horseshoe product engines. 1 will serve for the restoration of my Cox F15, I recently found back at my parents home.
1 290 with a #1 cylinder.
1 QZ
3 engines with a stunt tank, bolted together in the past, or ex QRC's? 1 engine has got a tapered crankcase and a #2 cylinder. Several have the TD head. The visual condition was the same of all engines. The QRC's and the QZ were frozen solid. On all engines, I separated the tank or backplate from the engine and cleaned them with alcohol without going mad for the moment. I heated the locked engines to get them turning again. Then I bolted everything together with original gaskets and a squirt of oïl.
The lot came with the usual Cox props still bolted on, a battery plug, 2 spanners and 2 independant fuel tanks.
2 horseshoe product engines. 1 will serve for the restoration of my Cox F15, I recently found back at my parents home.
1 290 with a #1 cylinder.
1 QZ
3 engines with a stunt tank, bolted together in the past, or ex QRC's? 1 engine has got a tapered crankcase and a #2 cylinder. Several have the TD head. The visual condition was the same of all engines. The QRC's and the QZ were frozen solid. On all engines, I separated the tank or backplate from the engine and cleaned them with alcohol without going mad for the moment. I heated the locked engines to get them turning again. Then I bolted everything together with original gaskets and a squirt of oïl.
The lot came with the usual Cox props still bolted on, a battery plug, 2 spanners and 2 independant fuel tanks.
OVERLORD- Diamond Member
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Re: Barn find rebuild, meet the screaming phoenix
WingingIt74 Thu Aug 14, 2014 2:54 pm
I find it relaxing to rebuild engines.
I'll give you a tip though, heat your oven to 200ºF (94ºC) and put the engines on a cookie sheet with tinfoil. Place your engines and tanks in there (no plastic) and let them heat up. Will be an even heat, unlike the torch your using, will work much better. Then just pull one engine out at a time and finish with the disassembly.
I'll give you a tip though, heat your oven to 200ºF (94ºC) and put the engines on a cookie sheet with tinfoil. Place your engines and tanks in there (no plastic) and let them heat up. Will be an even heat, unlike the torch your using, will work much better. Then just pull one engine out at a time and finish with the disassembly.
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Re: Barn find rebuild, meet the screaming phoenix
flyjsh Thu Aug 14, 2014 8:33 pm
WingingIt74 wrote:I find it relaxing to rebuild engines.
I'll give you a tip though, heat your oven to 200ºF (94ºC) and put the engines on a cookie sheet with tinfoil. Place your engines and tanks in there (no plastic) and let them heat up. Will be an even heat, unlike the torch your using, will work much better. Then just pull one engine out at a time and finish with the disassembly.
Travis,
Thanks for the suggestion. As I live in an apartment and really don't care to fire up a torch in a multi unit home, this is an option for a couple of my stubborn abused bees.
John
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Re: Barn find rebuild, meet the screaming phoenix
Waffleman Thu Aug 14, 2014 8:40 pm
Its funny we talk about torches, just the other day I was going through some of the junk my father kept in the garage and found a mini torch. It works off of butane, you just put in a cigarette lighter without the rolling sparker part and it uses that as the fuel tank. I don't know how hot it can get, and it certainly wont be as powerful as a regular propane torch, but it is still pretty cool.
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Re: Barn find rebuild, meet the screaming phoenix
OVERLORD Sat Aug 23, 2014 1:18 pm
Today, I assembled the engine again with new gaskets. I reset the ball - socket. I borrowed a muffler spring from a QZ.
What did it cost?
- purchase : 5,00 EUR
- tune up kit : 1,46 EUR
- venturi gasket set : 1,46 EUR
- long prop screw (3) : 1,46 EUR
- total : 9,38 EUR =~ 12,47 USD
Lieven
What did it cost?
- purchase : 5,00 EUR
- tune up kit : 1,46 EUR
- venturi gasket set : 1,46 EUR
- long prop screw (3) : 1,46 EUR
- total : 9,38 EUR =~ 12,47 USD
Lieven
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Re: Barn find rebuild, final assembly
Davenz13 Sat Aug 23, 2014 1:47 pm
Well done Lieven and if it should ever need a name perhaps "Phoenix" would be appropriate
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Re: Barn find rebuild, meet the screaming phoenix
1/2A Nut Sat Aug 23, 2014 7:59 pm
Well done on the refurb! Note super fine steel wool will make your aluminum glow plug shine like new. 
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Re: Barn find rebuild, meet the screaming phoenix
RknRusty Sat Aug 23, 2014 8:20 pm
Ah, another reclaimed in the name of fun. Good going.
Rusty
Rusty
_________________
Don't Panic!
...and never Ever think about how good you are at something...
while you're doing it!
My Hot Rock & Blues Playlist
...and never Ever think about how good you are at something...
while you're doing it!
My Hot Rock & Blues Playlist
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Re: Barn find rebuild, meet the screaming phoenix
dckrsn Sat Aug 23, 2014 8:50 pm
Good work Lieven. Looks great!
Saved from the edge of......
Bob
Saved from the edge of......
Bob
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Re: Barn find rebuild, meet the screaming phoenix
OVERLORD Sun Aug 24, 2014 3:42 pm
Thanks for your comments. I was thinking of waking you up with a sunday morning scream.
With plenty of enthousiasm, I set up my Work mate for the first trials. The engine didn't get any further than the classic 5 explosions after you flip the prop. Cylinder and surrounded areas were plenty of fuel. Too rich ( 3 turns) ? Reed problem? Changing the reed din't improve things. I then noticed a lot of vertical play of the crankshaft. On the downstroke, air or mixture was escaping behind the prop washer. Could it be that more mixture was pumped away through the crankshaft bore instead of going up the ports? I replaced crankshaft and cank case as well as the piston. All "used but still good" parts. I had to close the needle till 1/2 turn from fully closed before it would run smoothly and at constant speed.
Lieven
With plenty of enthousiasm, I set up my Work mate for the first trials. The engine didn't get any further than the classic 5 explosions after you flip the prop. Cylinder and surrounded areas were plenty of fuel. Too rich ( 3 turns) ? Reed problem? Changing the reed din't improve things. I then noticed a lot of vertical play of the crankshaft. On the downstroke, air or mixture was escaping behind the prop washer. Could it be that more mixture was pumped away through the crankshaft bore instead of going up the ports? I replaced crankshaft and cank case as well as the piston. All "used but still good" parts. I had to close the needle till 1/2 turn from fully closed before it would run smoothly and at constant speed.
Lieven
OVERLORD- Diamond Member
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Re: Barn find rebuild, meet the screaming phoenix
dckrsn Sun Aug 24, 2014 4:05 pm
Glad you got her running Lieven, congratulations. 
Just curious, did you use a gasket on both ends of the venturi
extension? Having to run with the needle so far closed sounds
like the classic venturi leak, where tank fuel is being sucked
directly into the venturi. I use a dart shaft o-ring on one end,
and stock Cox gasket on the other. Good seal.
I noticed you had no outer tank leaks though, and thats quite
a feat in itself.
Nice restoration. Looks great!
Bob
Just curious, did you use a gasket on both ends of the venturi
extension? Having to run with the needle so far closed sounds
like the classic venturi leak, where tank fuel is being sucked
directly into the venturi. I use a dart shaft o-ring on one end,
and stock Cox gasket on the other. Good seal.
I noticed you had no outer tank leaks though, and thats quite
a feat in itself.
Nice restoration. Looks great!
Bob
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Re: Barn find rebuild, meet the screaming phoenix
1/2A Nut Sun Aug 24, 2014 5:08 pm
12,958 rpm with my audio tach app. 
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Re: Barn find rebuild, meet the screaming phoenix
RknRusty Sun Aug 24, 2014 9:16 pm
I once tried to find an audio tach for my desktop PC. I'd settle with one for my Windows phone but that's a stretch as no one cares to write cool stuff for those. Can you tell me about yours?1/2A Nut wrote:12,958 rpm with my audio tach app.
Thanks,
Rusty
_________________
Don't Panic!
...and never Ever think about how good you are at something...
while you're doing it!
My Hot Rock & Blues Playlist
...and never Ever think about how good you are at something...
while you're doing it!
My Hot Rock & Blues Playlist
RknRusty- Rest In Peace
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Re: Barn find rebuild, meet the screaming phoenix
1/2A Nut Mon Aug 25, 2014 3:34 am
Yes Rusty would be happy to help:
Readings have been monitored watching photo cell tachs and amazing enough this thing is spot on within 20rpm
It can be set for RC use
2 or 4 cyl
low rpm pre set and high rpm narrows its -\+ losses
https://play.google.com/store/apps/details?id=com.javiery.rpmgauge
Readings have been monitored watching photo cell tachs and amazing enough this thing is spot on within 20rpm
It can be set for RC use
2 or 4 cyl
low rpm pre set and high rpm narrows its -\+ losses
https://play.google.com/store/apps/details?id=com.javiery.rpmgauge
Last edited by 1/2A Nut on Tue Aug 26, 2014 9:18 am; edited 1 time in total
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Re: Barn find rebuild, meet the screaming phoenix
OVERLORD Mon Aug 25, 2014 3:46 am
That is useful info. I will try to download that.
Bob, I used 2 Cox venturi gaskets. I think it should seal correctly because the engine ran until the tank was completely empty.
dckrsn wrote:Glad you got her running Lieven, congratulations.
Just curious, did you use a gasket on both ends of the venturi
extension? Having to run with the needle so far closed sounds
like the classic venturi leak, where tank fuel is being sucked
directly into the venturi. I use a dart shaft o-ring on one end,
and stock Cox gasket on the other. Good seal.
I noticed you had no outer tank leaks though, and thats quite
a feat in itself.
Nice restoration. Looks great!
Bob
Bob, I used 2 Cox venturi gaskets. I think it should seal correctly because the engine ran until the tank was completely empty.
OVERLORD- Diamond Member
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Re: Barn find rebuild, meet the screaming phoenix
Mike Mulligan Mon Aug 25, 2014 4:44 pm
Congratulations on a fine job, Lieven! Very well done.
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Re: Barn find rebuild, meet the screaming phoenix
dckrsn Mon Aug 25, 2014 5:19 pm
Oh well, I thought I was on to something.
Bob, I used 2 Cox venturi gaskets. I think it should seal correctly because the engine ran until the tank was completely empty.
It would have sucked air once it got below the venturi, and
that obviously didn't happen.
Carry on.
Bob
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