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John Hauck
Joined: 09 Jan 2006
Posts: 4639
Location: Titus, Alabama (hauck's holler)
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 Posted: Thu May 10, 2007 6:01 am Post subject: Prep For MV 2007 Flight |
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Morning Gang:
Trying to get all the loose ends tied up in prep for departure next
Tuesday morning, 15 May.
Travis Brown has been working overtime to get me some needed parts for
the mkIII. We had a heck of a time getting the extra large oil
cooler. He contacted everybody in the US who might have one. I am
pleased to say the UPS man dropped it off yesterday afternoon. Will
try to get it installed today.
Over the years, I have used the small Rotax oil cooler for the 912UL,
the medium for the last 912ULS, but decided to go with the extra large
Rotax oil cooler for the new 912ULS. The reason for the upgrade to a
larger cooler is high temps. There were times, expecially in the
dessert, I was flying with oil temps pushing the red line. Once in
Death Valley I had to back off power to bring the engine oil temps
back into the green. This new extra large cooler should take care of
high engine oil temps and make my cross country flight out West a bit
more comfortable.
I piggy back the oil cooler on the radiator. Increasing the size of
the oil cooler will cover a little more radiator. Should help bring
up CHT and lower eng oil temps. The 912 series engines, I have
discovered, like to run with nice warm CHT, especially in the winter
months when the temps get down into the 40s and 50s F.
Got to play with my drag strut universal joints. I did not mark them
before pulling the wings. Must have gotten them back on 180 deg out
of rigging. Back to a slight roll to the right, which I had gotten
rid of many years ago. If that will not do it, I will put the bungie
cord back on the stick for forced roll trim. That system is simple
and works great.
Need to do the first oil change at the same time I change out the oil
cooler. I think I have about 18 hours on the new engine. Normal
first oil change is 25 hours, but won't hurt a thing to change it out
a little early. Might even be good for it. 
Got my Garmin 196 GPS Jeppesen and Obstacle Clearance data bases
updated and ready to fly.
Better get busy. Got stuff to do.
john h
mkIII
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_________________
John Hauck
MKIII/912ULS
hauck's holler
Titus, Alabama |
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John Bickham
Joined: 10 Jan 2006
Posts: 170
Location: St. Francisville, LA
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| Posted: Thu May 10, 2007 9:58 am Post subject: Re: Prep For MV 2007 Flight |
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John H,
RE: trim and roll
It is amazing how the unknown and little bitty things make the biggest difference. Originally, my plane had a pretty good left roll and need for steady right rudder pressure. I accepted the famous "Kolb left roll". I accepted that is was the result of weight in the left seat and the rotation torque of 912's. I installed the rudder trim tab per your design. Put it all back together just like I did before, I thought.
Now she flies straight with no roll. Just need to keep a foot on the rudder at higher speeds so it doesn't wave like a flag. I can't explain why the roll dissappeared. It would be helpful to know, so I can repeat it on purpose.
Since you are a right seater from way back, you didn't put on a few pounds lately that may have knocked you out of trim to the right????  
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_________________
Thanks too much,
John Bickham
Mark III-C w/ 912UL
St. Francisville, LA
I know many pilots and a few true aviators. There is a distinct difference that I have the greatest respect for. |
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John Hauck
Joined: 09 Jan 2006
Posts: 4639
Location: Titus, Alabama (hauck's holler)
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| Posted: Thu May 10, 2007 10:59 am Post subject: Prep For MV 2007 Flight |
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> Since you are a right seater from way back, you didn't put on a
| Quote: | few pounds lately that may have knocked you out of trim to the
right???? [Twisted Evil] [Laughing]
--------
Thanks too much,
John Bickham
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John B:
As a matter of fact, I did put on 4 lbs this past week.
Had not thought of that.
Think I will still rotate the universals and see if there is a
difference. Since there is nothing precision on my airplane, except
the engine and prop, it is probably out enough to make a little
difference in roll.
John W told me to secure the lift strut with a rope and tie it off to
the tail. Then I can take the bolt out of the universal and rotate it
180 degrees by myself.
Still got to calibrate the tach and make sure the new prop is dialed
in correctly. Didn't have time to do that before I flew to Lakeland,
but it did fly good. May have one blade a hair out of adjustment from
the other two. Or maybe it is two out and one in. Anyhow, gonna try
and get them all reading off the same sheet of music and letting the
912ULS turn 5,500 rpm WOT straight and level flight.
john h
mkIII
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_________________
John Hauck
MKIII/912ULS
hauck's holler
Titus, Alabama |
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