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dabear(at)damned.org
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 Posted: Tue Oct 02, 2007 7:00 am Post subject: hydro lock |
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So I'm going to weight in here. I've had the oil shut off valve (with
starter cut-off) and oil scavenge pump for a while. I got it from
Kimbal's in FL. I absolutely love it, with no (zero), nada, zip,
reservations. I have to admit that I have tried to start it with the
valve in the off position, it doesn't start. With it in place, I have
had almost no oil in the system at all and if there is, there is not
enough to hydro lock the engine.
The only thing I would suggest is that you drain the engine with
electric pump after shut down. Takes about 45-60 seconds. Then after a
few min, drain the rest of the oil again. I'll usually do the second
drain pump for 10-15 seconds after I've started to button up the
airplane. This lets some of the oil drain down to the extraction point
so you get all of it.
Expensive, well, you decide. But I like not worrying about hydro lock.
I like having a clean hanger floor. I like not leaving much of an oil
slick at clinics. The only danger is that:
1. I could start it with it in the off position (not going to happen
with the cut-off).
2. I could shut off the oil in flight (That should never happen)
You make the call.
DaBear
Bitterlich, Mark G CIV Det Cherry Point, MALS-14 64E wrote:
[quote]
Read Brian Lloyd's reply to this one for the best of advice, but let me
just add a few things:
1. I own a YAK-50 with intake drains, and due to a slightly leaky ball
check valve in my oil pump I get oil into the cylinders very quickly.
In a month of no flying I can actually lose up to 3 GALLONS of oil. If
I fly every two weeks or so, that never happens.
2. Each person has his or her own method for getting oil out of the
cylinders, Brian's method being the most safe obviously.
3. Probably the best method I saw of everyone listed was on Sergei
Boriak's SU-31 (before it crashed). Sergei was sick and tired of oil in
the cylinders and having to pull it through EVERY time.
A. He spent a huge amount of $$$ and had new pistons put in with gapless
rings. Much more was done here than I will list, but the rings made a
big difference.
B. The best trick was that he installed an OIL VALVE in the oil supply
line to the engine. Yes, there is an obvious danger in doing that. He
put in the typical safety steps with starter inhibitors, etc. etc. And
I am sure, a lot of people will say it is still too dangerous. So if
you feel that way, good for you. Keep yanking the plugs. On the flip
side, shutting off the oil supply pretty much puts an END to this
problem.
C. The last step was to install an engine sump line going to an
electrical pump. After landing and shutting the engine down, you run
the pump and the oil from the sump is pumped back into the main oil
tank.
You combine all three and you have a very dry engine, no oil on the
ground, and no need to pull it through, and no chance of hydrostatic
locks.
I'm going to go with the main tank oil shut off valve, with push pull
control from the cockpit.
Mark
N50YK
--
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dontmesswtexas(at)yahoo.c
Guest
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| Posted: Tue Oct 02, 2007 6:09 pm Post subject: hydro lock |
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How much did the parts cost you??
TIA,
Lynn
DaBear <dabear(at)damned.org> wrote:
[quote]--> Yak-List message posted by: DaBear
So I'm going to weight in here. I've had the oil shut off valve (with
starter cut-off) and oil scavenge pump for a while. I got it from
Kimbal's in FL. I absolutely love it, with no (zero), nada, zip,
reservations. I have to admit that I have tried to start it with the
valve in the off position, it doesn't start. With it in place, I have
had almost no oil in the system at all and if there is, there is not
enough to hydro lock the engine.
The only thing I would suggest is that you drain the engine with
electric pump after shut down. Takes about 45-60 seconds. Then after a
few min, drain the rest of the oil again. I'll usually do the second
drain pump for 10-15 seconds after I've started to button up the
airplane. This lets some of the oil drain down to the extraction point
so you get all of it.
Expensive, well, you decide. But I like not worrying about hydro lock.
I like having a clean hanger floor. I like not leaving much of an oil
slick at clinics. The only danger is that:
1. I could start it with it in the off position (not going to happen
with the cut-off).
2. I could shut off the oil in flight (That should never happen)
You make the call.
DaBear
Bitterlich, Mark G CIV Det Cherry Point, MALS-14 64E wrote:
[quote] --> Yak-List message posted by: "Bitterlich, Mark G CIV Det Cherry Point, MALS-14 64E"
Read Brian Lloyd's reply to this one for the best of advice, but let me
just add a few things:
1. I own a YAK-50 with intake drains, and due to a slightly leaky ball
check valve in my oil pump I get oil into the cylinders very quickly.
In a month of no flying I can actually lose up to 3 GALLONS of oil. If
I fly every two weeks or so, that never happens.
2. Each person has his or her own method for getting oil out of the
cylinders, Brian's method being the most safe obviously.
3. Probably the best method I saw of everyone listed was on Sergei
Boriak's SU-31 (before it crashed). Sergei was sick and tired of oil in
the cylinders and having to pull it through EVERY time.
A. He spent a huge amount of $$$ and had new pistons put in with gapless
rings. Much more was done here than I will list, but the rings made a
big difference.
B. The best trick was that he installed an OIL VALVE in the oil supply
line to the engine. Yes, there is an obvious danger in doing that. He
put in the typical safety steps with starter inhibitors, etc. etc. And
I am sure, a lot of people will say it is still too dangerous. So if
you feel that way, good for you. Keep yanking the plugs. On the flip
side, shutting off the oil supply pretty much puts an END to this
problem.
C. The last step was to install an engine sump line going to an
electrical pump. After landing and shutting the engine down, you run
the pump and the oil from the sump is pumped back into the main oil
tank.
You combine all three and you have a very dry engine, no oil on the
ground, and no need to pull it through, and no chance of hydrostatic
locks.
I'm going to go with the main tank oil shut off valve, with push pull
control from the cockpit.
Mark
N50YK
--
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dabear(at)damned.org
Guest
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| Posted: Tue Oct 02, 2007 6:56 pm Post subject: hydro lock |
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Lynn,
http://www.jimkimballenterprises.com/h_support_moose.html
Here is the url. The scavenge pump is 300 and shut off valve is 250.
Installation extra.
Dabear
Lynn Allen wrote:
[quote] How much did the parts cost you??
TIA,
Lynn
*/DaBear <dabear(at)damned.org>/* wrote:
So I'm going to weight in here. I've had the oil shut off valve (with
starter cut-off) and oil scavenge pump for a while. I got it from
Kimbal's in FL. I absolutely love it, with no (zero), nada, zip,
reservations. I have to admit that I have tried to start it with the
valve in the off position, it doesn't start. With it in place, I have
had almost no oil in the system at all and if there is, there is not
enough to hydro lock the engine.
The only thing I would suggest is that you drain the engine with
electric pump after shut down. Takes about 45-60 seconds. Then
after a
few min, drain the rest of the oil again. I'll usually do the second
drain pump for 10-15 seconds after I've started to button up the
airplane. This lets some of the oil drain down to the extraction
point
so you get all of it.
Expensive, well, you decide. But I like not worrying about hydro
lock.
I like having a clean hanger floor. I like not leaving much of an oil
slick at clinics. The only danger is that:
1. I could start it with it in the off position (not going to happen
with the cut-off).
2. I could shut off the oil in flight (That should never happen)
You make the call.
DaBear
Bitterlich, Mark G CIV Det Cherry Point, MALS-14 64E wrote:
>
Cherry Point, MALS-14 64E"
>
> Read Brian Lloyd's reply to this one for the best of advice, but
let me
> just add a few things:
>
> 1. I own a YAK-50 with intake drains, and due to a slightly
leaky ball
> check valve in my oil pump I get oil into the cylinders very
quickly.
> In a month of no flying I can actually lose up to 3 GALLONS of
oil. If
> I fly every two weeks or so, that never happens.
>
> 2. Each person has his or her own method for getting oil out of the
> cylinders, Brian's method being the most safe obviously.
>
> 3. Probably the best method I saw of everyone listed was on Sergei
> Boriak's SU-31 (before it crashed). Sergei was sick and tired of
oil in
> the cylinders and having to pull it through EVERY time.
>
> A. He spent a huge amount of $$$ and had new pistons put in with
gapless
> rings. Much more was done here than I will list, but the rings
made a
> big difference.
>
> B. The best trick was that he installed an OIL VALVE in the oil
supply
> line to the engine. Yes, there is an obvious danger in doing
that. He
> put in the typical safety steps with starter inhibitors, etc.
etc. And
> I am sure, a lot of people will say it is still too dangerous. So if
> you feel that way, good for you. Keep yanking the plugs. On the flip
> side, shutting off the oil supply pretty much puts an END to this
> problem.
>
> C. The last step was to install an engine sump line going to an
> electrical pump. After landing and shutting the engine down, you run
> the pump and the oil from the sump is pumped back into the main oil
> tank.
>
> You combine all three and you have a very dry engine, no oil on the
> ground, and no need to pull it through, and no chance of hydrostatic
> locks.
>
> I'm going to go with the main tank oil shut off valve, with push
pull
> control from the cockpit.
>
> Mark
> N50YK
>
>
>
> --
| | - The Matronics Yak-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?Yak-List |
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dontmesswtexas(at)yahoo.c
Guest
|
| Posted: Tue Oct 02, 2007 7:12 pm Post subject: hydro lock |
|
|
Roger that and thanks...
Lynn
DaBear <dabear(at)damned.org> wrote:
[quote]--> Yak-List message posted by: DaBear
Lynn,
http://www.jimkimballenterprises.com/h_support_moose.html
Here is the url. The scavenge pump is 300 and shut off valve is 250.
Installation extra.
Dabear
Lynn Allen wrote:
[quote] How much did the parts cost you??
TIA,
Lynn
*/DaBear /* wrote:
--> Yak-List message posted by: DaBear
So I'm going to weight in here. I've had the oil shut off valve (with
starter cut-off) and oil scavenge pump for a while. I got it from
Kimbal's in FL. I absolutely love it, with no (zero), nada, zip,
reservations. I have to admit that I have tried to start it with the
valve in the off position, it doesn't start. With it in place, I have
had almost no oil in the system at all and if there is, there is not
enough to hydro lock the engine.
The only thing I would suggest is that you drain the engine with
electric pump after shut down. Takes about 45-60 seconds. Then
after a
few min, drain the rest of the oil again. I'll usually do the second
drain pump for 10-15 seconds after I've started to button up the
airplane. This lets some of the oil drain down to the extraction
point
so you get all of it.
Expensive, well, you decide. But I like not worrying about hydro
lock.
I like having a clean hanger floor. I like not leaving much of an oil
slick at clinics. The only danger is that:
1. I could start it with it in the off position (not going to happen
with the cut-off).
2. I could shut off the oil in flight (That should never happen)
You make the call.
DaBear
Bitterlich, Mark G CIV Det Cherry Point, MALS-14 64E wrote:
> --> Yak-List message posted by: "Bitterlich, Mark G CIV Det
Cherry Point, MALS-14 64E"
>
> Read Brian Lloyd's reply to this one for the best of advice, but
let me
> just add a few things:
>
> 1. I own a YAK-50 with intake drains, and due to a slightly
leaky ball
> check valve in my oil pump I get oil into the cylinders very
quickly.
> In a month of no flying I can actually lose up to 3 GALLONS of
oil. If
> I fly every two weeks or so, that never happens.
>
> 2. Each person has his or her own method for getting oil out of the
> cylinders, Brian's method being the most safe obviously.
>
> 3. Probably the best method I saw of everyone listed was on Sergei
> Boriak's SU-31 (before it crashed). Sergei was sick and tired of
oil in
> the cylinders and having to pull it through EVERY time.
>
> A. He spent a huge amount of $$$ and had new pistons put in with
gapless
> rings. Much more was done here than I will list, but the rings
made a
> big difference.
>
> B. The best trick was that he installed an OIL VALVE in the oil
supply
> line to the engine. Yes, there is an obvious danger in doing
that. He
> put in the typical safety steps with starter inhibitors, etc.
etc. And
> I am sure, a lot of people will say it is still too dangerous. So if
> you feel that way, good for you. Keep yanking the plugs. On the flip
> side, shutting off the oil supply pretty much puts an END to this
> problem.
>
> C. The last step was to install an engine sump line going to an
> electrical pump. After landing and shutting the engine down, you run
> the pump and the oil from the sump is pumped back into the main oil
> tank.
>
> You combine all three and you have a very dry engine, no oil on the
> ground, and no need to pull it through, and no chance of hydrostatic
> locks.
>
> I'm going to go with the main tank oil shut off valve, with push
pull
> control from the cockpit.
>
> Mark
> N50YK
>
>
>
> --
| | - The Matronics Yak-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
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captaindonhopkin(at)aol.c
Guest
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| Posted: Wed Oct 03, 2007 4:10 am Post subject: Hydro Lock |
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DaBear,
Ditto on Kimball's oil shut off and sump pump. I installed it a year ago and have eliminated hydro lock and very little oil excess coming out of the exhaust pipes and drains. I did add a very large and bright idiot light on my panel to remind me to open the shut off valve before flight!
Don Email and AIM finally together. You've gotta check out free AOL Mail!
[quote][b]
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