OLD OS Max 19, what is it?
09-14-2006, 11:15 PM
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OLD OS Max 19, what is it?
Hi guys,
Can anyone please explain the little flapper in the tail end of this engine's muffler? Where would the pushrod normally connect to when the engine is installed?
Anyone willing to estimate the value of the engine? It'll be for sale soon if anyone is interested.
Thanks for the help,
bart
Can anyone please explain the little flapper in the tail end of this engine's muffler? Where would the pushrod normally connect to when the engine is installed?
Anyone willing to estimate the value of the engine? It'll be for sale soon if anyone is interested.
Thanks for the help,
bart
09-14-2006, 11:28 PM
#2
RE: OLD OS Max 19, what is it?
The rod shall be connected with trottle arm and the other hole in flapper arm connected to servo.
Run the engine with pure 25% castoroil or be ruined of syntetic oil.
Jens Eirik
Run the engine with pure 25% castoroil or be ruined of syntetic oil.
Jens Eirik
09-15-2006, 07:57 AM
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RE: OLD OS Max 19, what is it?
Estimating values is very subjective and dependent on what a person is willing to pay, but as a starter, based on the photo, 20 to 25 bucks would be a ball park figure but because of its age and no availablility of spares; 10 would be more realistic. Apot of gold you ain't got [:@]
Ployd
Ployd
09-15-2006, 08:23 AM
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RE: OLD OS Max 19, what is it?
argh, she's not made of gold?
that's ok. do these run ok? maybe we'll put her in a plane and send her around the patch a few times.
would it be better to remove the flapper and run it off the carb only?
thanks,
bart
that's ok. do these run ok? maybe we'll put her in a plane and send her around the patch a few times.
would it be better to remove the flapper and run it off the carb only?
thanks,
bart
09-15-2006, 09:27 AM
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RE: OLD OS Max 19, what is it?
The baffle in the muffler is to increase the back-pressure to help keep the glowplug lit at low throttle settings. You may want to see if using an R/C plug will work. In the early days of R/C flying, the engines were basically control-line engines modified to throttle down a bit. The baffle was used to help keep it hot enough to keep the plug lit. An R/C plug with an idle bar will likely help a lot. You may need to use a short plug, if a regular plug hits the piston--put a new plug in it and turn the engine very carefully to see if the plug contacts the piston.
With an R/C plug, you may not need to use the baffle in the muffler.
With an R/C plug, you may not need to use the baffle in the muffler.
09-15-2006, 09:13 PM
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RE: OLD OS Max 19, what is it?
It came out in 1962. It will run fine on 10 to 15% nitro with 20% castor/ sunthetic mix. I've run my little OS 15 III on that for years and it works fine.
Use an Enya#3 or OS#8 plug.
Value is what you can get for it. I collect OS engines. I might give you 20 bucks for it. The place to try and sell it is the evil (here in RCU) E**Y. There is always some guy willing to pay 4 times what it's worth. Look what Cox Babe Bee 049's go for.
Use an Enya#3 or OS#8 plug.
Value is what you can get for it. I collect OS engines. I might give you 20 bucks for it. The place to try and sell it is the evil (here in RCU) E**Y. There is always some guy willing to pay 4 times what it's worth. Look what Cox Babe Bee 049's go for.
