Gear – PH-MNX http://ph-mnx.nl Building and Flying my π in the Sky Sun, 03 Jan 2021 20:20:32 +0000 en-US hourly 1 https://wordpress.org/?v=6.2.6 http://ph-mnx.nl/wp-content/uploads/sites/7/2023/01/cropped-maverick_150-32x32.png Gear – PH-MNX http://ph-mnx.nl 32 32 Gear Leg Fairings http://ph-mnx.nl/2021/01/03/gear-leg-fairings/ http://ph-mnx.nl/2021/01/03/gear-leg-fairings/#respond Sun, 03 Jan 2021 20:20:32 +0000 http://ph-mnx.nl/?p=2891 The day before we started working on the Gear Leg Fairings, we took the time to measure the exact position of the fairings relative to the longitudinal axis of the airplane.

This must be done very carefully, as small misalignment of the Gear Leg Fairings will result in more drag and even worse if it’s done asymmetrically, it will result in a yaw.

The Gear Leg fairing itself consists of a piece of glass-fiber, with a piano hige riveted in the back. This way you can detach the Fairing by removing the hinge pin.

With just the piano hinge it can still move around the gear leg, so on the top there is also a hose clamp fastening the Fairing into a fixed position, relative to the Gear Leg.

We need to remove the Wheel Pants, so we can insert the piano hinge pin from the bottom up.

We probably made the piano hinge too tight, because it took some effort to get the hinge pin in. I wanted a tight fit, but maybe I’ve overdone it.

We used the Endoscope to check where the pin was going, so we could apply local pressure on the Fairing to align the piano hinge segments.
With some oil and pressure we succeeded in inserting the pin all the way to the top.

Now we can align the marks we made earlier during measurements, position the Fairing and fasten the hose clamp to fix the Fairing to the Gear Leg.

With the experience we gained on the right Gear Leg Fairing, the left one went much easier. We used the endoscope, some oil and voila, Fairing is in place.

Positioning it with the marks and clamping the Fairing to the Gear Leg.

Time: 7 Hours, Rivets:  0/0  (2020-12-06)
Time: 8 Hours, Rivets:  0/0  (2020-12-12)
Time: 6 Hours, Rivets: 60/0  (2020-12-16)
Time: 6 Hours, Rivets:  0/0  (2020-12-19)
Time: 7 Hours, Rivets: 74/0  (2020-12-23)
Time: 7 Hours, Rivets:  0/0  (2020-12-27)
Time: 6 Hours, Rivets:  0/0  (2021-01-03)
Time: 6 Hours, Rivets:  0/0  (2021-01-10)

Video

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Landing Gear http://ph-mnx.nl/2020/09/19/landing-gear/ http://ph-mnx.nl/2020/09/19/landing-gear/#respond Sat, 19 Sep 2020 21:10:08 +0000 http://ph-mnx.nl/?p=2761 The landing gear is described in the builders manual from Van’s, however there is additional information available in the installation manual of the supplier of the brakes (Matco). We studied that, because although the brake system is not complex, it is still completely different from the ‘normal’ Aluminum drilling and riveting.

A small steel flange attaches the brake to the Landing Gear (axle). The flange has a weld seam which, in my opinion, results in a small deformation when installing the brakes. This makes it hard to insert the bolts.

Check the drawings carefully on which flange should go where.

The Wheel Pants (wheel fairing) are attached to the Landing Gear with two brackets. One on the outside of the axle and one on the inside.

The inside brackets require some trimming, to make it fit properly.

It took a while, but in the end we fitted the brakes to the landing gear including the fairing brackets. The Left side went much easier, once we struggled on the right side and found the correct way.

Turns out the Brake discs actually consists of two separate parts that can easily be detached (when no wheel is attached). I figured that out while installing the brakes to the right axle.

This picture was actually taken a few days later, when I already installed the Brake Lines.

Time: 5 Hours, Rivets: 61/0  (2020-09-16)
Time: 4 Hours, Rivets:  2/0  (2020-09-17)
Time: 3 Hours, Rivets:  0/0  (2020-09-18)
Time: 6 Hours, Rivets:  0/0  (2020-09-19)

Video

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