Mark,
As you may or may not know Ken Rand was a good friend of mine when he
was alive and we both lived two blocks apart in Huntington Beach,
California. He used to call KR's that he considered over built "lead
sleds". He also said many times "anything will fly with enough power". I
personally believe that an aircraft should have an engine that was designed
by competent engineers for aircraft. The best one of these I can think of
is a Lycoming and if I had it to do over I would build a KR2S and for power,
I would use a l25 horse power Lycoming. That would haul a pair of two
hundred pound guys with a climb rate of at least 1500 feet per minute and
with the right prop cruise in level flight would be about 215 mph. If you
wanted to go to the expence of having both, an air adjustable pitch prop
would do both.
Bob Stone, Harker Heights, Tx
rsto...@hot.rr.com
----- Original Message -----
From: "Mark Jones" <mjo...@muellersales.com>
To: "KRnet" <kr...@mylist.net>
Sent: Wednesday, May 11, 2005 12:46 PM
Subject: RE: KR> final weight and balance
>I just put my plane on the Atkins diet!!!!! There are a lot of things I
>could have done to save weight. My turtle deck is one area. It is about two
>inches taller than stock and way too thick as are my wing skins. Also I
>have a lot of unnecessary things like strobes, nav lights and landing
>lights, electric speed brake, etc, etc... As I was building, I had one goal
>in mind and that was to make a safe cross country flying machine.
>Passengers will be few and far between as my wife will not even fly in
>small spam cans. The kids are very light weight so when they fly with me
>that will be no biggie. The nose gear adds a few more pounds as does the
>aluminum wing tanks. I added 2 inches in front of the main spar to the
>fuselage as well as widened it by 3 inches. Maybe a lighter battery would
>help or I could ditch that heavy T&B indicator that I consider not needed
>and replace it with a simple ball slip indicator. There are a lot of things
>to lower the weight but I am happy with the plane the
>
> Mark Jones
>
> -----Original Message-----
> From: krnet-boun...@mylist.net [mailto:krnet-boun...@mylist.net]On
> Behalf Of Mark Langford
> Sent: Wednesday, May 11, 2005 11:34 AM
> To: KRnet
> Subject: Re: KR> final weight and balance
>
>
> OZ wrote:
>
>> So... your airplane came in 39 lbs. lighter than Mark Jones'.
>
> I'm not exactly sure what it was that I left out, but hope it wasn't
> important! All I can think of at the moment would be the kitchen sink.
> There are several places where rethinking and redoing things (like the
> airfoils) cost me some weight. I'm pretty sure I could build it 10-15
> pounds lighter next time around. But keep in mind that I have all the
> nice
> stuff like huge electric flaps, full electrical system, giant 130
> horsepower
> engine, landing, nav lights, and strobes, redundant electrical system, two
> fuel pumps, dual sticks, adjustable horizontal stabilizer, double-walled
> wing skins, etc. It all adds up, I guess. I just weighed my wings and
> they
> are 48 pounds each, but keep in mind that all bellcranks, cables, and
> connectors are part of my wings, rather than the airplane (like most other
> KRs). But surely your average KR wing must be far less, especially
> considering the size of my flaps, ailerons, and aileron counterweights.
>
> I've elaborated some more on the weight and balance at
> http://home.hiwaay.net/~langford/weightandbalance.html , and provided
> links
> to the spreadsheet and a pdf file of it for those who don't have Excel...
>
> Mark Langford, Huntsville, Alabama
> see KR2S project N56ML at http://home.hiwaay.net/~langford
> email to N56ML "at" hiwaay.net
> --------------------------------------------------------------
>
>
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