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Old 10-20-2017, 04:22 AM   #1
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Default S1 "Extended Bubble" Canopy

My sitting height makes the S1S (factory) canopy very tight to sit under.
It's a juggle between seat pack chutes that put my head in the canopy or backpack chutes that put my long legs even further forward.
--I'm using a Clarity Aloft.
I recently sat in a experimental S1S in which the canopy was noticeably more bulged up; the owner referred to it as an "Extended Bubble" canopy.
This afforded me perhaps as much as 3" more headroom than my factory S1S.
Does anybody know where I can find a canopy like this?
--Being certified for use on a factory S1 is not a requirement.

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Old 10-20-2017, 12:48 PM   #2
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I always sat on the aluminum sling seat bottom and I had enough head room. That was with a Security chute which was very thin in the seat. I removed the plywood seat back and made a sling out of rope to allow the chute to sit farther aft. This was a factory canopy and stock Homestead-built S-1S.

It depends on how tall you are and how low you want to sit. I'm about 6'5" so I needed all the help I could get.

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Project:Stretched Pitts S-1SS

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Old 10-20-2017, 01:30 PM   #3
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Installing a canopy is a very "fiddly" operation. Most plastic comes with a couple of inches of extra material around the edges so that it can be trimmed to fit an individual installation.

I would suggest calling your favorite canopy supplier (Plane Plastics is mine) and ask how much extra trim material they provide and whether they can provide a little more for you.

Keep in mind that you will have to match up the windshield with the canopy, so you likely need to purchase both.

I built a jig to hold the canopy and windshield so that I could make everything align to my satisfaction. I think that the jig took a lot longer to build than cutting the plastic.

Best of luck,


Last edited by PittsDriver68; 10-20-2017 at 03:13 PM.
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Old 10-20-2017, 09:07 PM   #4
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We use to get untrimmed S1S/T canopies. More plastic at the bottom. I had one on N3961 and another was on N396DC. Here is a pic. Lots of room up and sideways. Aircraft Windshields in CA had them.
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Old 10-22-2017, 11:01 PM   #5
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Thanks for the info.
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Old 10-23-2017, 10:22 AM   #6
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These planes must really be sized differently. I am 6’5” with most of the height in legs. I fit very comfortably with a sawed off racer canopy—done by our very own cwilliamrose many moons ago. Softie backpack and Clarity Aloft. One thing that helps with mine I think are the glider-style adjustable rudder pedals. By adjusting them forward, I gained an inch or two without hitting the firewall.

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