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F24R46 - UC61K Breather length
Posted: Tue Nov 06, 2018 8:53 am
by coxargus
'
Folks,
Has any body come up with the ideal length for the crankcase breather below the fuselage to help prevent over lubrication of the tail wheel?
Also should it be cut square or at an angle - the open side of the cut angle to face forward or aft?
I'm just attempting to keep the belly clean when the rebuild takes to the air.
Thanks all
Frank Cox
'
Re: F24R46 - UC61K Breather length
Posted: Tue Nov 06, 2018 11:04 am
by Airy-H. Millet
' #ygrps-yiv-2094693592 P {margin-top:0;margin-bottom:0;} First, angle cut seems to be facing the wind at best (other tests already done without any advantage).
A cut in the space on the outlet flow from the bottom cowling gives awfull results (seems even to make a venturi to spill out the oil on the belly). So, preferably a length long enough to get out of the stream from le bottom cowling lip.
Otherwise when I was in charge of a F24R, we did following solutions: -a tube running along the gear leg, outlet being under the brake bowl...works quite well, spilling some oil when stopping the aircraft on the apron...and easy to access to put a small cup under if needed. -a tube running inside the plane on the belly/under the floor, and outing sideway by the tailwheel removable panel. (an idea that comes from looking at aerobatic Extra aircrafts)....of course giving very nice results.
my 2 or 3 cts... Airy
De : fairchildclub@yahoogroups.com de la part de frankjcox44@gmail.com [fairchildclub]
Envoyé : mardi 6 novembre 2018 14:18
À : fairchildclub@yahoogroups.com
Objet : [fairchildclub] F24R46 - UC61K Breather length Folks,
Has any body come up with the ideal length for the crankcase breather below the fuselage to help prevent over lubrication of the tail wheel?
Also should it be cut square or at an angle - the open side of the cut angle to face forward or aft?
I'm just attempting to keep the belly clean when the rebuild takes to the air.
Thanks all
Frank Cox
'
Re: F24R46 - UC61K Breather length
Posted: Thu Nov 08, 2018 5:19 am
by Francis Cox
'Thank you Airy,
As the engine has been rebuilt I hope there will not be too much oil going out. Also to help the situation the baffle on the inside of the crankcase was fitted 180* out to help stop oil thrown from the crankshaft entering the breather - we shall see!
Frank
On Tue, 6 Nov 2018 at 18:32, 'Airy-H. Millet'
flyingairy@hotmail.com [fairchildclub] wrote:
First, angle cut seems to be facing the wind at best (other tests already done without any advantage).
A cut in the space on the outlet flow from the bottom cowling gives awfull results (seems even to make a venturi to spill out the oil on the belly). So, preferably a length long enough to get out of the stream from le bottom cowling lip.
Otherwise when I was in charge of a F24R, we did following solutions: -a tube running along the gear leg, outlet being under the brake bowl...works quite well, spilling some oil when stopping the aircraft on the apron...and easy to access to put a small cup under if needed. -a tube running inside the plane on the belly/under the floor, and outing sideway by the tailwheel removable panel. (an idea that comes from looking at aerobatic Extra aircrafts)....of course giving very nice results.
my 2 or 3 cts... Airy
De : fairchildclub@yahoogroups.com de la part de frankjcox44@gmail.com [fairchildclub]
Envoyé : mardi 6 novembre 2018 14:18
À : fairchildclub@yahoogroups.com
Objet : [fairchildclub] F24R46 - UC61K Breather length Folks,
Has any body come up with the ideal length for the crankcase breather below the fuselage to help prevent over lubrication of the tail wheel?
Also should it be cut square or at an angle - the open side of the cut angle to face forward or aft?
I'm just attempting to keep the belly clean when the rebuild takes to the air.
Thanks all
Frank Cox
'