Can’t help you, Bill
In my 10 + years of flying with the
rotary, I’ve never had to add oil between changes. In fact, always had
to drain a bit after 10 hours or so due to the two cycle oil. However, since I
have switched to the 2.85 gear box and reduced my oil to ¾ oz per gallon about
3 years, I have notice no further build up of oil in the sump.
YMMV
Ed
From: Rotary motors in aircraft
[mailto:flyrotary@lancaironline.net] On
Behalf Of Bill Bradburry
Sent: Thursday, September 03, 2009
3:06 PM
To: Rotary
motors in aircraft
Subject: [FlyRotary] Re: Help for
John Slade
I suspect that the proper amount of oil will always result in oil
increasing in the pan. After all, in the car this oil is recycled out of
the pan.
Does anyone have any good data on how much oil the rotary
“uses” between oil changes? That would give some idea of how
much it would take to not have any oil get into the pan, but I doubt it is a
good idea to have all the oil burn or blow out. Lubrication is the goal.
I plan to use 3 oz per 4 gal. 1 ½ oz Marvel Mistery oil and 1 ½
oz 2 cycle oil.
And I plan to not forget to put it in each time! :>)
If I change oil every 50 hours, I will use around 2.5 gal of oil
between changes. Anybody have data that indicates I will have to drain
oil between changes? I assume that Marvel is as good for the crankcase as
the 2 cycle is bad for it??? My setup holds 8 quarts when full. I
was thinking about running it about a quart low on changes.
“Input!, I need input!”
Bill B
I am looking forward to reading John’s writeup about his
incident. He always did such a good job describing what was going on with
his build, I was sorta sad when he finished. :>(
From: Rotary motors in aircraft
[mailto:flyrotary@lancaironline.net] On
Behalf Of Yvon Cournoyer
Sent: Thursday, September 03, 2009
2:35 PM
To: Rotary
motors in aircraft
Subject: [FlyRotary] Re: Help for
John Slade
I have been using a ratio of 1:140 for some time and
still getting an increase in the oil pan. I do not run above 5500-5600 engine
rpm. My engine is a 1986 13B. Yvon.
----- Original Message -----
Sent: Wednesday,
September 02, 2009 10:04 PM
Subject: [FlyRotary] Re:
Help for John Slade
Just talked to John
again. Engine emergency caused by clogged fuel filters (John mentioned
debris caused by some fuel tank work of some sort?). Saw fuel pressure
fluctuations on EM2 and increased EGTs then rpm started falling. After
landing, John found the clogged filters & cleaned them out. That
procedure called for closing a shutoff valve from the tanks. After
cleaning the filters, he forgot to turn the shutoff valves back on, hence the
failure to start. He eventually noticed that fuel pressure was super low
and that eventually jogged the memory of the shutoff valves. After
opening them, the engine started immediately.
The RPM anomaly is still a mystery & I didn't think to ask him if that was
back to normal. I'm sure we will hear more later. I'm kind of
amazed that the engine still had good compression after 50 gallons of fuel with
no oil added was used.
Just random thoughts: I'm thinking I should cut back on the amount of
oil I add. I'm still accumulating 2 stroke in the crankcase when using
3/4 oz per gallon of gas. Think I'll go to 1/2 oz / gal. on
Renesis. Peripheral exhaust port 13Bs need more oil than Renesis but 1
oz/gal is probably overkill.
Tracy
On Wed, Sep 2, 2009 at 8:46 PM, David Leonard <wdleonard@gmail.com> wrote:
So what caused the evergency landing?
Dave Leonard
On Wed, Sep 2, 2009 at 5:39 PM, Tracy Crook <tracy@rotaryaviation.com>
wrote:
Called John to see if I could help. What a saga!
Lots of indications that it is clogged fuel system somewhere but also some
symptoms that occurred simultaneously that make no sense at all (like a double
rpm indication). John says compression is good/normal in spite of
two fuel stops with no oil added to gas (forgot). Engine was running
normal at shutdown after emergency landing but now won't start. Unfortunately
John has none of the EC2 upgrades including ignition & injector diagnostics
and has not tried checking for spark while cranking since that is a 2 man
job. I forgot to ask if he had tried the backup on EC2 controller
but I assume he did.
Tracy
On Wed, Sep 2, 2009 at 7:45 PM, Bulent Aliev <bulent@enginegearonline.com>
wrote:
Guys, I just got a call
from John Slade. He had to do an emergency landing in Graystone 17FL (Ocala)
FL. His engine will not start again, and he needs someone with rotary
experience to talk to. His cel # is 860-271-3941. Please give him a call if you
can help in any way.
Buly
Bulent Aliev
--
David Leonard
Turbo Rotary RV-6 N4VY
http://N4VY.RotaryRoster.net
http://RotaryRoster.net
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