Today's Message Index:
----------------------
1. 05:39 AM - Re: Upcoming RPA T-Shirt Design (alikatz@mbay.net)
2. 11:03 AM - Re: Re: Hydraulic Lock Prevention (Bitterlich, Mark G CIV NAVAIR, WD)
3. 11:08 AM - Re: Re: Hydraulic Lock Prevention (Bitterlich, Mark G CIV NAVAIR, WD)
4. 02:31 PM - Re: Hydraulic Lock Prevention (Vic)
5. 04:03 PM - Re: Re: Hydraulic Lock Prevention (Joe Howse)
Message 1
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| Subject: | Re: Upcoming RPA T-Shirt Design |
Mr. Fox,
Awesome, let me know when they're available!
Best Regards
Jim
Quoting Byron M Fox
Message 2
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| Subject: | Re: Hydraulic Lock Prevention |
I own Les Crowder's test aircraft, and it had the valve cover drains and scavenge
pump. It had (and I still have stored) new valve covers that allowed drainage
and then subsequent pumping back to the oil tank. It did work well, however
it added a lot of hoses and clamps that increased the chances for an oil leak
that would not be visible from the cockpit, so I removed all of it and went
back to stock. It did not include an oil shut off valve.
His hydraulic toe brake conversation using Cleveland wheels and brakes was SUPERB
and are still in use.
Mark
-----Original Message-----
From: owner-yak-list-server@matronics.com [mailto:owner-yak-list-server@matronics.com] On Behalf Of Michael B. Cavanagh
Sent: Tuesday, September 10, 2013 22:38
Subject: Re: Yak-List: Re: Hydraulic Lock Prevention
I BELIEVE THE LATE LES CROWDER HAD VALVE COVER DRAINS, AN OIL SHUTOFF VALVE,
AN ELECTRIC POST SHUTDOWN SCAVENGE PUMP. AND INTAKE DRAINS. WORKED GOOD. LOTS
OF WORK.
On Sep 10, 2013, at 7:29 PM, bill wade <bwade154@yahoo.com> wrote:
Hi guys and gals I'm doing my condition inspection now and on the to do list is
adjust the valves well after draining all the oil and removing the oil hoses
let drip a couple days time for the valves remove the covers and another quart
or two of oil from the lower cylinders valve covers. So my question is how do
you know if its the oil pump ball seat or a valve guide that's not quite up
to par creating the hydraulic lock?. All this talk about ball valves after the
oil tank and before the oil pump maybe we need to get the oil out of the push
rod tubes? Has anyone put a drain tube on the valve covers and if so the results?
Bill Wade
N4450Y
From: Michael B. Cavanagh <mikecavanagh1@hotmail.com>
To: yak-list@matronics.com
Sent: Tuesday, September 10, 2013 7:05 PM
Subject: Re: Yak-List: Re: Hydraulic Lock Prevention
LOOKS REALLY NICE! I PUT A BALL VALVE ON MY RYAN STA YEARS AGO WHICH WORKED WELL.
I WAS LUCKY THE OIL LINE WAS LOCATED IN A POSITION WHERE THE BALL VALVE
CONTROL HANDLE WAS ACCESSED AT THE REAR OF THE COWLING. IN THE OFF POSITION THE
HANDLE STUCK OUT IN PLAIN SIGHT, AND I ATTACHED A RED STREAMER TO IT AS AN
ADDED PRECAUTION. I KNOW ANOTHER GUY WHO DID THE SAME THING BUT HAD A DOOR IN
THE COWLING WHICH COULD NOT BE CLOSED WITH THE VALVE CLOSED. (CONTROL HANDLE STICKING
OUT) YOURS LOOKS VERY NICE. MIKE
On Sep 10, 2013, at 2:04 PM, Vic <vicmolnar@aol.com> wrote:
>
> Wot, no comments - still ??
> Please understand, I dont sell any sets but wanted to share my idea with those
who like the purely mechanical way. So feel free to include this idea of unlocking
the oil valve from the fuel shut-off by Bowden cable in your own design
that may look quite differently. But then, you will need some metal working
facilities......
>
> Cheers
> Vic
>
>
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=408376#408376
>
>
>
>
>
>
>
>
>
>
t;
href="http://www.matronics.com/Navigator?Yak-List">http://www.matronics.com/Navigator?Yak-List
href="http://forums.matronics.com/">http://forums.matronics.com
href="http://www.matronics.com/contribution">http://www.matronics.com/contribution
Message 3
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| Subject: | Re: Hydraulic Lock Prevention |
Les Crowder's modification included specially made valve covers that had hose outlets
cast into them. A short rubber hose then connected these together much
like some P&W radial engines. The engine sump drain was also connected into
this whole design where then an electric pump returned all this oil up to the
main tank. You could turn on the master and hit this switch and listen to it
as it pumped the oil back. When there was no more oil, the pump would speed up
and you knew it was done. Worked extremely well. However, there was no oil
shut-off valve, so you just went out and did this little exercise every so often
. I wrote another message on this already (sorry) but then read this and
decided to go into more detail.
Mark
-----Original Message-----
From: owner-yak-list-server@matronics.com [mailto:owner-yak-list-server@matronics.com] On Behalf Of bill wade
Sent: Tuesday, September 10, 2013 20:55
Subject: Re: Yak-List: Re: Hydraulic Lock Prevention
Wow just sitting here thinking about the valve guides and the oil would go out
the exhaust pipe or intake tube no hydraulic lock but still a mess.
Bill Wade
From: bill wade <bwade154@yahoo.com>
Sent: Tuesday, September 10, 2013 8:29 PM
Subject: Re: Yak-List: Re: Hydraulic Lock Prevention
Hi guys and gals I'm doing my condition inspection now and on the to do list is
adjust the valves well after draining all the oil and removing the oil hoses
let drip a couple days time for the valves remove the covers and another quart
or two of oil from the lower cylinders valve covers. So my question is how do
you know if its the oil pump ball seat or a valve guide that's not quite up to
par creating the hydraulic lock?. All this talk about ball valves after the
oil tank and before the oil pump maybe we need to get the oil out of the push
rod tubes? Has anyone put a drain tube on the valve covers and if so the results?
Bill Wade
N4450Y
From: Michael B. Cavanagh <mikecavanagh1@hotmail.com>
Sent: Tuesday, September 10, 2013 7:05 PM
Subject: Re: Yak-List: Re: Hydraulic Lock Prevention
LOOKS REALLY NICE! I PUT A BALL VALVE ON MY RYAN STA YEARS AGO WHICH WORKED WELL.
I WAS LUCKY THE OIL LINE WAS LOCATED IN A POSITION WHERE THE BALL VALVE CONTROL
HANDLE WAS ACCESSED AT THE REAR OF THE COWLING. IN THE OFF POSITION THE
HANDLE STUCK OUT IN PLAIN SIGHT, AND I ATTACHED A RED STREAMER TO IT AS AN ADDED
PRECAUTION. I KNOW ANOTHER GUY WHO DID THE SAME THING BUT HAD A DOOR IN THE
COWLING WHICH COULD NOT BE CLOSED WITH THE VALVE CLOSED. (CONTROL HANDLE STICKING
OUT) YOURS LOOKS VERY NICE. MIKE
On Sep 10, 2013, at 2:04 PM, Vic <vicmolnar@aol.com> wrote:
>
> Wot, no comments - still ??
> Please understand, I dont sell any sets but wanted to share my idea with those
who like the purely mechanical way. So feel free to include this idea of unlocking
the oil valve from the fuel shut-off by Bowden cable in your own design
that may look quite differently. But then, you will need some metal working facilities......
>
> Cheers
> Vic
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=408376#408376
>
>
t;
http://www.matro://forums.matronics.com/" target="_blank" rel="nofollow">http://forums.=========
Message 4
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| Subject: | Re: Hydraulic Lock Prevention |
Hello,
Id be very interested to hear if this valve cover drain showed some reduced oil
consumption. Basically there are only two ways for oil loss : Via the piston
rings or via the valve stems. Maybe someone knows what Les Crowders experiences
were in this respect ?
Vic
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=408525#408525
Message 5
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| Subject: | Re: Hydraulic Lock Prevention |
Hello
>From Joe
I worked with Les Crowder several years ago, copied his ideas on the valve
covers except I had new ones machined from aluminum
with a boss for drilling and tapping for the drain fittings and piped to a
recovery pump. worked quite well except no way to drain all the oil from
the lower cylinder rocker boxes as the valve guides were lower than the
fittings on the covers
Also worked with Les on th SS slip joint exhaust systems he instigated, they
were beautiful.
Joe
-----Original Message-----
From: Vic
Sent: Thursday, September 12, 2013 2:29 PM
Subject: Yak-List: Re: Hydraulic Lock Prevention
Hello,
Id be very interested to hear if this valve cover drain showed some
reduced oil consumption. Basically there are only two ways for oil loss :
Via the piston rings or via the valve stems. Maybe someone knows what Les
Crowders experiences were in this respect ?
Vic
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=408525#408525
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