Mailing List lml@lancaironline.net Message #68888
From: Tim Jørgensen <tj@yacht-pool.dk>
Sender: <marv@lancaironline.net>
Subject: Re: [LML] [LNC2] Which trim servo (MKII tail)
Date: Mon, 06 Jan 2014 07:46:07 -0500
To: <lml@lancaironline.net>
"Which one is the correct one to get?"

The best answer is: That it kind of depends.....
 
I first bought the 1" servo, but it turned out that the trim tab hinge reinforcement, for unknown reasons, was on the lower skin.
Called Lancair, they said it didn´t matter, I could just suit myself.....
 
Options were:
 
1. Flip stabilizer and have trim tab on starboard side
 
2. Grind hinge reinforcement away on stab side, to make room for curved lip and make new hinge reinforcement on opposite side
 
3. Leave hinge on lower skin and look at ugly control horn on upper skin for 30 years or more
 
4. Leave hinge on lower skin, install control horn on bottom tab skin, glue servo mount plate (1/8" phenolic with studs) to upper skin and install access panel in lower skin.
 
 
I opted for solution # 4, all together leaving the upper skin free of hardware. I took great care in shaping the curved lip, so there is a nice, uniform 1/16" gap through the whole range of movement. It looks great.
 
I had to fabricate a slightly shorter control horn for some reason, that I no longer remember. I think the control rod angles might have determined the length of the control horn. The 1" stroke came out too long, so I had to buy a .7" servo, which fits perfectly.
 
If I were to do it over, I would make a servo model out of white foam. Glue a square block onto a piece of 1/8" phenolic and there you have it. Fabricate the arm out of aluminum or 1/8" phenolic. There is a 50% chance that your servo model will save you $ 145......
The excact dimensions are on the Rayallen website    http://www.rayallencompany.com/RACmedia/T2-7A.pdf
 
Not really the answer you wanted, right? Talk about tough love....
 
Anyway; here´s a motivation photo:
 
 
I started my engine for the first time yesterday. Apart from the prop not cycling (probably wrong type governor), everything worked without a hitch. No leaks, pressures are good, temps are good, noise level is perfect!
 
A friend of mine shot a little video:
 
 
Don´t forget HD res and turn up the volume. Now you are ready to go back to work, right?
 
Best regards
Tim Jorgensen
360MKIIFBOB / 99.9%
Image
2014-01-05_First start_small.jpg
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