Re: Ranger Engine Question
Posted: Mon Apr 18, 2011 10:52 am
'I am running Aeroshell 100 Mineral.
'--- In fairchildclub@yahoogroups.com, Airy Millet wrote:
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> Yes, I confirm (we tested several position) that the cut shape and position of breather line outlet is important! (longer it is, farther under the plane belly you'll find oil drips'))
> (when too short, you have oil from the firewall and all along the fuselage belly... ).
> And I can ensure that airflow through cylinders and airflow running out of the cowling from under is a quite fast airflow!
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> 2150/2300rpm, are very high for this engine!!
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> Inside of stacks are black...of course...but between fingers does it feel "wet" (oily) or "dry" (like powder)!
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> Now you have run your engine several 10-15minutes intervals, check the magnetics fingers in the bottom of the engine (under the scavenge pump) [take care, some quarts/liters will flow out when opening there, as the scavenge pump, and camshaftcase will drain out].
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> and last question, which kind of oil do you use for breaking runs?? (I personnaly recommend mineral 100% Aero100 in "normal" climate, and Aero120 in "warm" climate).
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> Airy
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> To: fairchildclub@yahoogroups.com
> From: obliquephoto@...
> Date: Mon, 18 Apr 2011 14:56:38 +0000
> Subject: [fairchildclub] Re: Ranger Engine Question
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> Maybe I have been running the engine too fast. Not being too familiar with this engine I always thought it was good to run a higher RPM during breakin. I have be fluctuating my throttle from 2150-2300 in 10-15 minuet intervals. I have an engine analyzer which give me reading on all 6 cylinders. All temps are close in the 1200-1350 range. The engine breather extends from the bottom cowl 1". Maybe this is not enough. Does this really create a suction if too short? The inside of the stacks are black. I also have a pesco wet pump hooked up with an air oil separator. No oil appears to be coming out of the overflow for the separator. I have the oil return line for the vacuum system ported back to the accessory case to the port to the right of the vacuum pump. Thoughts? Yes I have a scavenge pump. Don't know how to check to make sure it is running but I took the hose fitting off the line that comes from the pump to the oil cooler and it was full of oil. Frustrating... JON
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> --- In fairchildclub@yahoogroups.com, "Bob" wrote:
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> > Jon,
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> > You are looking at more than three GALLONS of oil per hour. This is seriously wrong. Three quarts per hour might be unseated rings, but I doubt that three GALLONS per hour could get past the rings.
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> > I suspect that you have the plumbing installed wrong. Any pictures? Mine is an earlier model with the oil cooler hanging out the bottom of the cowl, so seeing mine wouldn't help as much as seeing a later model. Where are you located?
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> > Are you possibly running the engine to fast? Have you got a non-standard propeller? Do you have a manifold pressure gauge?
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> > Hope you can get it sorted out soon.
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> > Bob Waldron
> > 1939 Fairchild 24K
> > Webster, MN
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> > --- In fairchildclub@yahoogroups.com, "jwm1801" wrote:
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> > > 3.5 years and 500 hours- my Fairchild 24R46 had its first flight this past weekend. What a thrill and a terrific flying airplane. The bad news is I used a tremendous amount of oil. Engine has a fresh overhaul as does all the accessories including the oil cooler. I thought it might just need to run to break in but I now think something else is going on. This morning I flew her for 45 minuets and used 2.5 gallons of oil. Oil is coming out of the breather line and all over the belly. Oil cooler is warm but breather line is warmer then the oil return line. Any on have any suggestions??? PLEASE HELP!! JON
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