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  Topic: Area Rule for Subsonic? Inverse Pressure Matching
dmac7

Replies: 0
Views: 435

PostForum: Europa-List   Posted: Thu Dec 21, 2023 11:29 am   Subject: Area Rule for Subsonic? Inverse Pressure Matching
If your Christmas shopping is done and you have time to kill maybe this video with Mike Arnold discussing aerodynamic ideas his testing of them and what other aero dynamists think would find a audienc ...
  Topic: N11EU Flies Again!
dmac7

Replies: 6
Views: 1872

PostForum: Europa-List   Posted: Wed Nov 22, 2023 6:44 am   Subject: Re: N11EU Flies Again!
Hello Chris, N11EU looks extraordinary! Don't see orange peel...very slick, it must cruise a little fast than before?
I wonder if it is still the lightest Europa XS in North America? BTW Chris nev ...
  Topic: ROTAX 9XX Hydraulic Lifters
dmac7

Replies: 5
Views: 1673

PostForum: Europa-List   Posted: Tue Sep 05, 2023 2:21 pm   Subject: Re: ROTAX 9XX Hydraulic Lifters
Was talking to my Canadian Rotax expert who has been to Austria for training a few times over the years.
The Johnson Lifter company did indeed supply Rotax with Lifter's for some years.
There was a ...
  Topic: ROTAX 9XX Hydraulic Lifters
dmac7

Replies: 5
Views: 1673

PostForum: Europa-List   Posted: Mon Sep 04, 2023 4:08 pm   Subject: Re: ROTAX 9XX Hydraulic Lifters
Very interesting, Ford lifters. I would be a little surprised if those were put there by Rotax in Austria! I will ask someone with Rotax experience and get back here. I know old american V8's mostly ...
  Topic: Cork insulation for noise reduction
dmac7

Replies: 7
Views: 1774

PostForum: Europa-List   Posted: Thu Aug 31, 2023 2:35 pm   Subject: Re: Cork insulation for noise reduction
Doing a small amount of research we learn that there are two ratings of interest when considering a material for sound control, NRC Noise Reduction Coefficient = sound absorption Cork said to be 0.7 N ...
  Topic: Cabin fresh air exhaust
dmac7

Replies: 27
Views: 7472

PostForum: Europa-List   Posted: Wed Aug 30, 2023 3:54 pm   Subject: Re: Cabin fresh air exhaust
When it comes to Europa interior airflow each aircraft is somewhat unique, so I would not write off the duct from bulkhead to sternpost for all Europa's if it doesn't work on one. I think for it to be ...
  Topic: Cork insulation for noise reduction
dmac7

Replies: 7
Views: 1774

PostForum: Europa-List   Posted: Tue Aug 29, 2023 6:10 am   Subject: Cork insulation for noise reduction
I have been reading a few article's regarding the properties of cork insulation, light weight, fire resistant, sound absorbing, and thermal insulation properties. I was wondering if others considered ...
  Topic: The Obsidian Files - Wing Tips
dmac7

Replies: 4
Views: 1517

PostForum: Europa-List   Posted: Fri Aug 11, 2023 6:36 am   Subject: Re: The Obsidian Files - Wing Tips
Interesting what a computer can say about shape changes on a aircraft. The B model Piper Aztec offered optional 22 gal tip tanks of a different shape to the standard wingtip. It was said they were Ho ...
  Topic: Rotax 914 Dyno Test
dmac7

Replies: 11
Views: 2574

PostForum: Europa-List   Posted: Sun Jul 02, 2023 8:51 am   Subject: Re: Rotax 914 Dyno Test
Thing's are not always as they first appear, fortunately. As one Youtube reply would suggest. He also had a high IAT of 92C but after isolating his inlet from the exhaust/turbo heat his IAT dropped ...
  Topic: Finishing tips
dmac7

Replies: 9
Views: 2532

PostForum: Europa-List   Posted: Sun Mar 26, 2023 11:59 am   Subject: Re: Finishing tips
Thx Jerry, good write up on finishing. I will try to add a Youtube video on a method used by Cory Bird on his aircraft called " Symmetry " a 2004 Oshkosh Grand champion winner. He called hi ...
  Topic: the Obsidian Files - So Much Noise!!!
dmac7

Replies: 65
Views: 128566

PostForum: Europa-List   Posted: Thu Mar 16, 2023 9:25 am   Subject: Re: the Obsidian Files - So Much Noise!!!
That is light weight sound reduction product at 0.7 lbs sqf. If it works on the firewall please post results.
Dad spent many thousands of hours flying in the western Canadian Arctic behind a variet ...
  Topic: Tank repair options
dmac7

Replies: 3
Views: 949

PostForum: Europa-List   Posted: Fri Mar 03, 2023 9:51 am   Subject: Re: Tank repair options
That's very interesting, if what they say is true replacing cracked fuel tanks could be a thing of the past. Thx William
  Topic: Fwd: Beringer wheel & brake
dmac7

Replies: 2
Views: 642

PostForum: Europa-List   Posted: Thu Mar 02, 2023 3:33 pm   Subject: Re: Fwd: Beringer wheel & brake
Jerry the photos of the Beringer wheel & brake were posted 8/15 2022 but they are to be found in the 8/12...2022 " what did you do with your Europa last week".
I chose the Airtrac 800- ...
  Topic: Fwd: Beringer wheel & brake
dmac7

Replies: 2
Views: 642

PostForum: Europa-List   Posted: Thu Mar 02, 2023 1:48 pm   Subject: Re: Fwd: Beringer wheel & brake
I have the Beringer complete kit but no hours using it yet. It's been on the market about 10 years many Europa owners have been using it. In the beginning there were worries expressed about it getting ...
  Topic: New engine runs a little rough when weather is cold.
dmac7

Replies: 20
Views: 3913

PostForum: Europa-List   Posted: Wed Feb 15, 2023 10:38 am   Subject: Re: New engine runs a little rough when weather is cold.
It will vary but winter mogas has typically 10% more butane to help it start in cooler seasons, butane has 20% less energy than gasoline and evaporates easily so it doesn't age well in a vented tank. ...
  Topic: New engine runs a little rough when weather is cold.
dmac7

Replies: 20
Views: 3913

PostForum: Europa-List   Posted: Tue Feb 14, 2023 10:45 am   Subject: Re: New engine runs a little rough when weather is cold.
Hello Chris, that was a interesting video you shared, years ago I drag raced a mildly modified '70 Ford Mustang 351C engine, I didn't have a oxygen sensor I used the time and speed to tell me how to j ...
  Topic: Mono Factory Tail Wheel Mounting
dmac7

Replies: 6
Views: 1163

PostForum: Europa-List   Posted: Sun Dec 11, 2022 8:22 am   Subject: Re: Mono Factory Tail Wheel Mounting
Hello Area51, thx for sharing. I see the contoured washer's and bolts instead of pins. I tried something similar ( Rhichard Collins LAA aproved mod ) it uses nut plates on a sectioned piece of tube ...
  Topic: The Obsidian File
dmac7

Replies: 6
Views: 1326

PostForum: Europa-List   Posted: Fri Nov 25, 2022 7:38 am   Subject: Re: The Obsidian File
Ahh the fabulous Baker build I have heard of her! Nice details, Paul Lipps would have approved of your vent scoops, he once wrote of scoops vs NASA scoops in Kite planes magazine. Clean looking wing j ...
  Topic: What did you do with your Europa this week - 18/11/22
dmac7

Replies: 9
Views: 1434

PostForum: Europa-List   Posted: Sun Nov 20, 2022 2:52 pm   Subject: Re: What did you do with your Europa this week - 18/11/22
Interesting posts Mr Area-51 confirmation is nice. I wonder if changing the needle positions affect cruise mixture much or only mid range? And thats a sweet firewall...
  Topic: I think I found the leak!
dmac7

Replies: 4
Views: 975

PostForum: Europa-List   Posted: Sat Aug 20, 2022 11:00 am   Subject: Re: I think I found the leak!
Thanks for commenting Tim, much appreciated. The leak was low on the tank as evidently it emptied the tank.
Perhaps I should put a few gallons of water in the tank view the leak in action?

I was h ...
 
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