Cotton Waiex 191 - N191YX

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Re: Cotton Waiex 191 - N191YX

Postby sonex892. » Sat Mar 10, 2018 3:12 pm

Bryan Cotton wrote:Question for the group: does the bottom pin really need to be two pieces? Length makes it harder to insert due to friction. Or does it need to be one due to the exhaust being in the way later?

Hi Bryan
I use only the one long pin there. I'd try that first, you can always modify it to two pins later if its a pain.
Steve
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Re: Cotton Waiex 191 - N191YX

Postby Rynoth » Sat Mar 10, 2018 4:49 pm

Bryan Cotton wrote:Question for the group: does the bottom pin really need to be two pieces? Length makes it harder to insert due to friction. Or does it need to be one due to the exhaust being in the way later?


I wasn't sure what you were talking about at first... in looking at your photos it does not appear that you have made the cutouts for the cowling air exit yet? If you're talking about the pin that joins the 2 cowling halves at the bottom, I used 1 pin. I bent the pin 90 degrees at the end with a good 3 inches past the bend, giving me a pretty good grip on the pin while inserting/removing it.
Ryan Roth
N197RR - Waiex #197 (Turbo Aerovee Taildragger)
Knoxville, TN (Hangar at KRKW)
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Re: Cotton Waiex 191 - N191YX

Postby Bryan Cotton » Sat Mar 10, 2018 5:55 pm

Forgot to mention that I enjoyed Kip's video. My cooling exits are cut out now. Here is one of my cowl flaps riveted on.
Image

Here is my fuel door cutout.
Image

Here is the cowl alignment on the prop hub. I'll tweak the engine mounting a bit.
Image
Bryan Cotton
Poplar Grove, IL C77
Waiex 191 N191YX
Taildragger, Aerovee, acro ailerons
dual sticks with sport trainer controls
Prebuilt spars and machined angle kit
Year 2 flying and approaching 200 hours December 23
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Re: Cotton Waiex 191 - N191YX

Postby Bryan Cotton » Sat Mar 10, 2018 9:18 pm

I tapered and bent the long lower pin for the bottom cowl seam. Makes it easier to get in.
Image
Bryan Cotton
Poplar Grove, IL C77
Waiex 191 N191YX
Taildragger, Aerovee, acro ailerons
dual sticks with sport trainer controls
Prebuilt spars and machined angle kit
Year 2 flying and approaching 200 hours December 23
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Re: Cotton Waiex 191 - N191YX

Postby rk2436 » Sat Mar 10, 2018 9:29 pm

I don't know if you want to move the engine to fit the cowl. It may be a real PITA but you may want to refit the cowl to the spinner/engine to make sure you have a straight flying plane.
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Re: Cotton Waiex 191 - N191YX

Postby N111YX » Sat Mar 10, 2018 10:24 pm

Bryan, consider that the bottom pin will be tight at first but will loosen up after a few hours from vibration and oil residue from inside the cowl. I worried about mine initially but it "bedded" in after just a few hours of flight.
Last edited by N111YX on Sun Mar 11, 2018 2:06 pm, edited 1 time in total.
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Re: Cotton Waiex 191 - N191YX

Postby Bryan Cotton » Sun Mar 11, 2018 1:38 pm

Bob, I'm a firm believer that perfect is the enemy of good enough. To get the engine to its rigged location I had to crank down on the top motor mounts. I've uncranked a bit and it seems pretty good. I may have a slight rig imperfection, or a slight cowl misalignment, or most likely both. For now it is what it is. I've got the rest of my life to tweak it, but I'd like to get it flying first. Kip, good to know the hinges loosen up a bit. So far it seems easy to get the vertical split cowl on and off, contrary to some of the discussion I've seen.

We worked the fuel door today. Paused and took a picture of the prop in place.
Image
Bryan Cotton
Poplar Grove, IL C77
Waiex 191 N191YX
Taildragger, Aerovee, acro ailerons
dual sticks with sport trainer controls
Prebuilt spars and machined angle kit
Year 2 flying and approaching 200 hours December 23
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Re: Cotton Waiex 191 - N191YX

Postby Rynoth » Sun Mar 11, 2018 7:14 pm

Bryan, on the bright side, it'll be longer before your engine sags enough on the bushings to start making fiberglass smoke!
Ryan Roth
N197RR - Waiex #197 (Turbo Aerovee Taildragger)
Knoxville, TN (Hangar at KRKW)
My project blog: http://www.rynoth.com/wordpress/waiex/
Time-lapse video of my build: https://www.youtube.com/watch?v=Q8QTd2HoyAM
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Re: Cotton Waiex 191 - N191YX

Postby Bryan Cotton » Mon Mar 12, 2018 10:11 pm

Ryan, it's almost like I planned it that way.

Inlets opened up:
Image

Two inlets:
Image

When we transferred the hole for the fuel door Southco, disaster struck. Looks like we need to transfer the Southco towards the center, and glass over the hole.
Image
Bryan Cotton
Poplar Grove, IL C77
Waiex 191 N191YX
Taildragger, Aerovee, acro ailerons
dual sticks with sport trainer controls
Prebuilt spars and machined angle kit
Year 2 flying and approaching 200 hours December 23
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Re: Cotton Waiex 191 - N191YX

Postby SonexN76ET » Mon Mar 12, 2018 10:51 pm

Bryan,

If you use a Hartwell latch on the fuel filler door you will be happy in the long run. It sure makes it a lot more convenient to visually check your fuel level and the security of your fuel cap as well as when fueling. Since you have to fill the miss drilled hole you could put one in easily now.

Wicks sells surplus latches for around $20.

Jake
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