Today's Message Index:
----------------------
1. 08:25 PM - Venting Oil during Aerobatics (mr.gsun@gmail.com)
2. 08:36 PM - Re: Venting Oil during Aerobatics (Linn Walters)
3. 09:29 PM - Re: Venting Oil during Aerobatics (mr.gsun@gmail.com)
4. 09:40 PM - Re: Venting Oil during Aerobatics (Linn Walters)
Message 1
| INDEX | Back to Main INDEX |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Venting Oil during Aerobatics |
I recently received some very much appreciated dual acro instruction in my
500 hour RV7. We did 90 minutes of fun acro with some negative and zero G
maneuvers. My RV has an IO 360 (180 hp) with constant speed prop but
without inverted fuel and oil. I started with about six quarts of oil and
at the end of the flight I had almost a full quart gone. The belly of the
plane was covered with oil and it seemed to all come from the oil crankcase
vent overflow. My next few flights were not acro and there was no oil
lost.
Question is; Is this normal to lose that much oil during aerobatics? How
do I avoid such an expensive mess? Do those air/oil separators work for
this much oil?
Thanks
Message 2
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Venting Oil during Aerobatics |
On 2/12/2012 11:23 PM, mr.gsun@gmail.com wrote:
> I recently received some very much appreciated dual acro instruction
> in my 500 hour RV7. We did 90 minutes of fun acro with some negative
> and zero G maneuvers. My RV has an IO 360 (180 hp) with constant
> speed prop but without inverted fuel and oil. I started with about
> six quarts of oil and at the end of the flight I had almost a full
> quart gone. The belly of the plane was covered with oil and it seemed
> to all come from the oil crankcase vent overflow. My next few
> flights were not acro and there was no oil lost.
>
> Question is; Is this normal to lose that much oil during aerobatics?
It's normal if you do the negative Gs. When in a negative G attitude
the engine oil collects in the upper crankcase ...... where the vent is
..... and any blow-by will just force the oil overboard.
> How do I avoid such an expensive mess?
Keep the Gs positive and you'll keep the belly clean. It's easy to add
inverted oil, but more difficult to add inverted fuel.
> Do those air/oil separators work for this much oil?
Oh no grasshopper! They'll keep some oil vapor off the belly but not
liquid oil. And if you (or anyone else) do put an air/oil separator on
your engine DO NOT run the collected crap back into your engine.
Collect it in a bottle that you can empty .... and the first time you
empty it you'll know why.
Linn
>
> Thanks
> *
>
>
> *
Message 3
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Venting Oil during Aerobatics |
OK, Thanks. I'll just have to get better at my Acro stuff.
do not archive
On Sun, Feb 12, 2012 at 8:23 PM, <mr.gsun@gmail.com> wrote:
> I recently received some very much appreciated dual acro instruction in my
> 500 hour RV7. We did 90 minutes of fun acro with some negative and zero G
> maneuvers. My RV has an IO 360 (180 hp) with constant speed prop but
> without inverted fuel and oil. I started with about six quarts of oil and
> at the end of the flight I had almost a full quart gone. The belly of the
> plane was covered with oil and it seemed to all come from the oil crankcase
> vent overflow. My next few flights were not acro and there was no oil
> lost.
>
> Question is; Is this normal to lose that much oil during aerobatics?
> How do I avoid such an expensive mess? Do those air/oil separators work
> for this much oil?
>
> Thanks
>
> *
>
> *
>
>
Message 4
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Venting Oil during Aerobatics |
On 2/13/2012 12:27 AM, mr.gsun@gmail.com wrote:
> OK, Thanks. I'll just have to get better at my Acro stuff.
My best advice is to forget the acro .... it's addictive and causes
pilots to spend inordinate amounts of money on new, bigger, more
expensive airplanes. ;-)
True, but tongue in cheek. Be careful and safe exploring the nether
regions of the flight envelope. Get some more dual time with instructor
..... poor recovery from a wifferdill can be fatal.
Linn ..... Pitts Glider Pilot
>
> do not archive
>
> On Sun, Feb 12, 2012 at 8:23 PM, <mr.gsun@gmail.com
> <mailto:mr.gsun@gmail.com>> wrote:
>
> I recently received some very much appreciated dual acro
> instruction in my 500 hour RV7. We did 90 minutes of fun acro
> with some negative and zero G maneuvers. My RV has an IO 360 (180
> hp) with constant speed prop but without inverted fuel and oil.
> I started with about six quarts of oil and at the end of the
> flight I had almost a full quart gone. The belly of the plane was
> covered with oil and it seemed to all come from the oil crankcase
> vent overflow. My next few flights were not acro and there was
> no oil lost.
>
> Question is; Is this normal to lose that much oil during
> aerobatics? How do I avoid such an expensive mess? Do those
> air/oil separators work for this much oil?
>
> Thanks
>
> *
>
> t="_blank">http://www.matronics.com/Navigator?RV-List
> tp://forums.matronics.com
> _blank">http://www.matronics.com/contribution
>
> *
>
>
> *
>
>
> *
Other Matronics Email List Services
These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.
-- Please support this service by making your Contribution today! --
|