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BJ Craft Etude

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Old 03-15-2017, 12:34 AM
  #126
ltc
 
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What is the range of incidence that you ended up with ?
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Old 03-15-2017, 05:32 AM
  #127
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LOTS!
I did a few measurements before I committed to drilling the fuselage holes and gluing the rear adjusters. By the time I was finished I could adjust the wing from -2 to +3 degrees. Much of this due to the amount of material I removed from the fuse that allows the carbon tubes to move up and down. Because this was the first time I ever had to install adjusters I spent a bit of time verifying my measurements. I suppose you could be more lenient if the rear stabs were adjustable.

The only credit I can take for the this job is the final assembly and photos, 32Ford really set me on the right path.

Last edited by mgosson; 03-15-2017 at 01:56 PM.
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Old 03-31-2017, 10:29 AM
  #128
Dave Harmon
 
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Quote:
Originally Posted by mgosson View Post
LOTS!
I did a few measurements before I committed to drilling the fuselage holes and gluing the rear adjusters.
What is the name of the digital incidence tool....not the Pro Smart??
Pretty slick.
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Old 03-31-2017, 11:11 AM
  #129
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I have two digital measure devices. One of them I've had for 25 years and it t was sold under the name "Pro Smartlevel". Back in the day it was a one of a kind tool. We build a fixture to mount it into a Robart incidence meter, worked well but it was heavy. I recently purchased a new one from F3A ( http://www.f3aunlimited.com/anglepro...-meter-efla280 ) it works well, though not as accurate as my old rusty dog. But, it is much lighter in weight.
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Old 03-31-2017, 01:17 PM
  #130
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Quote:
Originally Posted by mgosson View Post
I have two digital measure devices. One of them I've had for 25 years and it t was sold under the name "Pro Smartlevel". Back in the day it was a one of a kind tool. We build a fixture to mount it into a Robart incidence meter, worked well but it was heavy. I recently purchased a new one from F3A ( http://www.f3aunlimited.com/anglepro...-meter-efla280 ) it works well, though not as accurate as my old rusty dog. But, it is much lighter in weight.
Great!
I didn't know Mike had these....I'll check it out.
Thanks a lot!
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Old 03-31-2017, 03:10 PM
  #131
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Another popular gauge is the Wixey WR300
http://wixey.com/anglegauge/index.html
I prefer the original Type 1 over the newer Type 2 (capacitive vs MEMS)
Bryan Hebert sells an adapter (3D printed I believe) that allows it to be mounted on the standard Robert incidence bars.
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Old 03-31-2017, 03:29 PM
  #132
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Quote:
Originally Posted by ltc View Post
Another popular gauge is the Wixey WR300
http://wixey.com/anglegauge/index.html
I prefer the original Type 1 over the newer Type 2 (capacitive vs MEMS)
Bryan Hebert sells an adapter (3D printed I believe) that allows it to be mounted on the standard Robert incidence bars.
Thanks.....I have a couple of Wixey gauges and they work well.
i screwed a small piece of angle iron to the the bar and zeroed the iron to the bar on a surface plate.....but....I always worry that the Wixey will fall off the iron if I bump it and the magnet lets go.
I'll look at Bryan's site and see what he's got.
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Old 04-01-2017, 04:46 AM
  #133
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Quote:
Originally Posted by Dave Harmon View Post
Thanks.....I have a couple of Wixey gauges and they work well.
i screwed a small piece of angle iron to the the bar and zeroed the iron to the bar on a surface plate.....but....I always worry that the Wixey will fall off the iron if I bump it and the magnet lets go.
I'll look at Bryan's site and see what he's got.
Bryan's tool
https://www.ckaero.net/tools.php
(he also has an adapter to check engine thrust angle, but it's not shown on the site)

I took an old 1/8" thick steel machinist rule, cut it to length, drilled and tapped the top of the Robert bar and attached it. The Wixey seems very securely held in place.
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Old 04-12-2017, 01:13 PM
  #134
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Default Battery Tray Installation

We're almost finished with all the big and small stuff, just a few small details left. I saved the battery tray installation for last as many have suggested and it appears 260 mm fore of the rear canopy mounting is a good starting point.

I chose the F3A battery tray along with the new Handy Dandy quick removal brackets that Mike Mueller began offering a short time ago; http://www.f3aunlimited.com/gator-rc...ket-kit-grcrtb

These little critters are slick, and for the price he charges, he's not making any money.

I used my favorite adhesive, Loctite 1C for small jobs and used it to mount the brackets to the fuselage. It's now very easy to remove the tray if necessary.
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Old 08-05-2017, 04:13 PM
  #135
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Which control horn is for the elevator and which for the aileron?
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Old 08-06-2017, 06:24 PM
  #136
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If memory serves me correctly I thought they were all the same size, not 100 percent certain.
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Old 08-06-2017, 06:38 PM
  #137
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Sorry, double post.

Last edited by mgosson; 08-06-2017 at 06:40 PM.
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Old 08-07-2017, 05:02 AM
  #138
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I have built several BJ planes and There should be 3 horns supplied and 2 are the same and are for the ailerons, The Rudder is the stand alone. It also tends to be shorter and longer..

So if you check the distance from the tang that is glued in to the control surface, to the hole in the horn. The Rudder is the longer distance.


Hope this helps
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Old 08-07-2017, 01:41 PM
  #139
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I have three different horns. Pretty easy to identify the rudder, only one. The elevator and aileron horns are different. I think I figured it out by closely looking at pictures on this thread, the elevator horns are a little longer and straighter than the aileron.
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