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Home
Ch 18 Canopy
Canopy Latches 4

Canopy Latches 4

7 years ago
Dave Berenholtz
Ch 18 Canopy
Date:  03-13-2018
Number of Hours:  12
Manual Reference:  18-8

These latches are the gift that keeps on giving. I spent a few more days on this and more than the 12 hours in this log. Given my highly modified canopy from the plans version I get what I deserve.

I had the latches on and off several times using Builder’s bog (Bondo). The secret to lining them up turns out to be getting the latches sitting just forward of the capture point as in the picture above.

As the canopy comes down it should just miss the capture bolt as shown above, This is the correct position IMHO. Then when the canopy comes down the hook is past the center point so that the fitting it lives in forces the hook to move rearward and wrap around the capture bolt. When you think about it if the hook is too upright it is just going nowhere and the canopy will jam open. The hooks need to follow the canopy down so it can capture that pesky little AN3 bolt. All you smart people probably knew this. I needed a few hours of trial and error.

I fastened each latch one at a time continually checking that all was good. When I was happy with the first one I drilled through while the builder’s bog was still in place. I then worked close to the plans. I removed the latches and cleaned it all up. I drilled through the holes in the canopy rail and then dremeled out a place for the screw heads. I tapped the latches for 3/16″ machine screws per plans as well. I did use my numbered drills to just open the canopy side holes a tiny bit so that the screws dropped in place. Given I was going to put flox in the holes a little room is a good thing.

Here are the bolts in place and floxed into position. I did a trial fit first of course and that took a while. It was an overnight cure and all is good.

Over three days I did the three latches, floxed in place. This was after a lot of checking and fitting and refitting work. Now the canopy, once the latches are aligned, will then drop into place and the catches do ‘grab’. We can call that success. The canopy latch is meant to then lock it all in place and that’s coming up soon.

Ok a few bonus pics of the canopy spreader. I wanted to show how good it is sitting in the back seat and using this as something to grab onto.

I’ve been very careful in positioning this bar so that its not a finger trap and you can still get you hand around it.

See… its all good if you come for a ride in the back seat if you need something to hold on to.

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CategoryLogsHours
All157617079
Uncategorized135
Ch 3 Education220
Ch 4 Fuselage Bulkheads25231
Ch 5 Fuselage Sides32283
Ch 6 Fuselage Assembly30270
Ch 7 Fuselage Exterior14140
Ch 8 Roll Over/Seat Belts990
Ch 9 Main Gear/Landing Brake71642
Ch 10 Canard28287
Ch 11 Elevators36298
Ch 12 Canard Installation12102
Ch 13 Nose and Nose Gear1291097
Ch 14 CenterSection Spar57525
Ch 15 Firewall and Accessories448
Ch 16 Control System27237
Ch 17 Roll/Pitch Trim System654
Ch 18 Canopy70502
Ch 19 Wings, Alierons1271090
Ch 20 Winglets/Rudders71528
Ch 21 Strakes - Fuel/Baggage65437
Ch 22 Electrical System591031
Ch 23 Engine Installation961152
Ch 24 Covers/Fairings/Consoles25202
Ch 25 Finishing561084
Ch 26 Upholstry340
Fuel System46310
Rollover1050
Cabin heating System60331
The Ferry Tank335
Blog2694182
Build Mods2252513
Nose Gear Doors856
Wheel Pants/Gear Leg Fairing40473
Oxygen System762
Roll and Pitch Trim964
Winglet Intersection Fairings445
Baggage Pods11104
Pilot Side Windows437
RAM Air & Hellhole Cover15177
Main Gear Beef Up322
Post Cure124
Fire Extinguisher16
Wing Fences13
EVS (Enhanced Visual System)130
Hinge Upgrade115
Cowl Keeper110
Rudder Gust Locks19
Cooling20607
Taxi Tests42
Flying10

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