Mailing List flyrotary@lancaironline.net Message #26974
From: Ed Anderson <eanderson@carolina.rr.com>
Subject: Re: [FlyRotary] Re: Flooding on startup....
Date: Sat, 15 Oct 2005 20:30:46 -0400
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
I had a really hard landing back in February - dropped in from (it felt like 12-15 feet), two big bounces, scrapped the rudder but manage to keep my brand new $$ prop out of the tarmac.  It turns out the much larger prop (went from a 68x72 to a 76x88) acts like a very effective speed brake when the engine is pulled all the way to idle.  I later found out it added 500 fpm rate of descent when I pulled the engine from 2800rpm back to 2000.  I was landing long and like I had done with the old prop, pulled it back to idle and lost almost 20 mph airspeed in about 100 ft of travel.  Took me by surprise.

Then in June I had the brake fire/failure and went off the run way into a shallow ditch which didn't help the gear situation.

I knew the left (pilot) side gear was bent as you could see the sway and the left wing tip was about 3" lower than the right.  However, after deciding and replacing the left gear I found my left wing was  now 6" higher than my right.  So I took off the right gear leg and found it was bent but closer to the fuselage and straight back (about 2") so it was not as apparent from the causal observation.  So had to get the right gear.  They are beefier than the old 6 gears and that  contributed a bit to the higher stance.

So it cost me approx $576 to replace and have match-hole drilled the two main gear - but, I just smile when I think what it would have cost on an GA.

Glad to hear your RV-7 is fast.  If I ever (probably won't) built another RV it would be the RV-7A.

Just hope I get the new gear back in time since I no longer even have the old gear to put back on and fly to Tracy's Rotary Round up coming up in a couple of weeks.

Ed
----- Original Message ----- From: "Jim Mosur" <jmosur@interlog.com>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Sent: Monday, May 16, 2005 8:46 PM
Subject: [FlyRotary] Re: Flooding on startup....


Hi Ed.


Off the subject, I noticed in one of your e-mail's that you said you
were waiting for a gear leg, nose or fuse. ? What happened ? I have
heard that 6A's and 7A's have been breaking their nose gear.

We have over 40 hrs. on the 7A goes like hell.

Jim Mosur

-----Original Message-----
From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On
Behalf Of Ed Anderson
Sent: Friday, October 14, 2005 11:28 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: Flooding on startup....


Buly,  If I understood your findings.  There are eight wires to the
injectors (2 per injector).  Four (one per injector ) will be connected
to
the 12Vdc power source through your injector switches/CB.  All will have

12Volts on them if your injector switches are on and there is power to
them
(engine not running). The other  Four of the 8 wires (one per injector)
will go back to the EC2 (these are the wires that trigger the
injectors).
Remember that all the injector has electronic-wise is a coil of wire.
So if
you have 12V on one end of a coil of wire, you will have 12V on the
other
end - if it is NOT grounded.  You must have current flowing through the
coil
to produce a voltage drop and if the one side is not grounded, there is
no
current flow and no voltage drop so the wire on both sides of the
injector
will measure 12Vdc.

The way the EC2 triggers the injectors is to ground this wire through a
transistor inside the Ec2.  So only the periodic  grounding of the one
side
will activate the injector.  Therefore, if the engine were running you
would
find that one side of the injector will always have 12Volts on it and
the
other side will be pulsating between 12 volts and zero volts (this the
wire
going to the Ec2).  If the engine is not running (and there is power to
the
injectors) then there will be 12Vdc on both sides of the injector
connection
or on all 8 wires to the injectors.

Ed A


----- Original Message ----- From: <atlasyts@bellsouth.net>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Sent: Friday, October 14, 2005 11:55 PM
Subject: [FlyRotary] Flooding on startup....


Tonight I spent some time checking around the engine. With both inj.
switches on, I have 12V on all the wires going to the injectors? As
far as
I know, there is one 12V feed from the switch to each P/S injectors
and
one wire for each injector comming from the EC2 providing intermitten
ground. If I'm right, how come there is the same voltage on all the
wires?
Buly

BTW few months ago the engine was running perfect? I have no idea what
caused all this trouble?


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