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Bob,
Splitting the sound between 12 different outlets may help, but I'm guessing it will still be unbelievably loud at 5-6k rpm. The good news with my situation is that there haven't been any noise complaints (that I know of). My biggest problem is longevity of the exhaust system. My baffle, muffler, or whatever is pretty close to the rear exhaust port which is wreaking havock with the muffler, baffle, or whatever is nearby. I'll know more about how the HP2 is working when I get a few more hours on it. I seriously doubt that it will last 40-50 hours, more likely 5-10.
Mark
On Feb 1, 2008 5:25 PM, < bmears9413@aol.com> wrote:
Will do. I thought Marks 20B was reasnably quite when I heard it in Austin. But from what he says now, its a little different in the upper end of the revs.
Bob Mears
Sent: Fri, 1 Feb 2008 5:20 pm
Subject: [FlyRotary] Re: Bob Mears
Bob,
Keep us informed please, I'm very interested in the DB's.
George (down under)
----- Original Message -----
Sent: Saturday, February 02, 2008 9:11 AM
Subject: [FlyRotary] Re: Bob Mears
Part of the exhaust design is to get the motor quiteer without lots of bac pressure. If its still too loud I will build 12 small mufflers, on for each outlet.
Bob Mears
Supermarine Spitfire
-----Original Message-----
From: George Lendich <lendich@optusnet.com.au>
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Sent: Fri, 1 Feb 2008 5:07 pm
Subject: [FlyRotary] Re: Bob Mears
Bob,
I know your designed the exhaust for authentic looks, but I have always wondered if there were side benefits.
You know, learning to fly is not one of the hardest things I have ever done, but it was difficult because, unless you have been involved in aviation it is completely different to anything else you may have ever done before.
Don't get me wrong, flying the plane is easy - take-off and landing a little harder. It's all the other stuff you have to know that got to me.
George ( down under)
Its different. And I'm not kidding about flying....started ground school two weeks ago
Bob Mears
Supermarine Spitfire
-----Original Message-----
From: George Lendich <lendich@optusnet.com.au>
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Sent: Fri, 1 Feb 2008 3:38 pm
Subject: [FlyRotary] Re: Bob Mears
Bob,
A Licence would be handy( or are you pulling our leg), however the aircraft isn't quite finished yet, so you have a little time.
Yes! exciting times! The exhaust sounds very quiet, I'm wondering if it's the interesting and unusual exhaust design ( which I have always liked since seeing it) or that it just at idle - it's seems a very low idle as well!
George ( down under)
Here's the real first start.Had to edit it to shorten it....im really gonna have to get a pilots license
http://www.youtube.com/watch?v=Mo1fhLxtYI0
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