Mailing List lml@lancaironline.net Message #38847
From: Kevin Kossi <kevin@airforcemechanical.com>
Sender: <marv@lancaironline.net>
Subject: Re: [LML] Re: Hx = Hot Stuff!
Date: Sun, 03 Dec 2006 22:40:32 -0500
To: <lml>

Here is my preliminary data:



Empty Weight1553
Kevin155
Passenger200
De-ice40
20-amp Alt5.75
Parachutes30260
Zero Fuel Weight Total2013.75
Fuel655.85380.25
Total Gross Weight2394


If I fly two hours, I burn enough flue to land at 2,200Lbs


If I fly by myself:



Empty Weight1553
Kevin155
Passenger0
De-ice40
20-amp Alt5.75
Parachutes30130
Zero Fuel Weight Total1783.75
Fuel655.85380.25
Total Gross Weight2164


The De-ice may be too much. I haven't ordered it or my prop yet, so nothing is written in stone, other than that I want the Parachutes and the ability to jettison the Canopy.

I have to see what the Empty weight will be with the MT Prop. I'll give Tim a call and see what he has to say. If he tells me the De-ice puts me over the top, I won't do it.



Alan,


You do remember this email don't you?

From:
"Marvin Kaye" <marv@lancaironline.net>
Subject:
Re: [LML] Legacy Max Weights
Date:
Sun, 16 Apr 2006 00:27:38 -0400
To:
lml




Posted for "Alan K. Adamson" <aadamson@highrf.com>:

 I believe you as the builder can specify any gross weight that you want....
 However, the factory offers guidelines that stay within the design envelop
 of the aircraft.

 

 In talking with Tim Ong. The specified gross is 2200. He had no problem
 with 2400, but didn't suggest anything greater than that. I'm thinking of
 doing like what some of the certified guys do. They specify a Max Takeoff
 weight and a Max landing weight. I'd do the 2400/2200 for those two. Yes
 it means you have to burn off some fuel if you took off at gross and then
 didn't plan a long enough trip. This is the same thing in my 182. Max TO
 is 3100 and Max landing is 2950.

 

 Most likely what I'll do...

 

 Alan

I am always open for constructive criticism and helpful input, but there is no reason to speak to people the way you do.



Kevin Kossi
Legacy 73%
New York

On Dec 3, 2006, at 11:37 AM, Marvin Kaye wrote:

Posted for "Alan K. Adamson" <aadamson@highrf.com>:

 Kevin,
  I just connected the dots...
  Can I poke for a minute?  In good fun?
  Let me see if I can summarize.
  A) - you always wear a parachute and will continue to do so with your LEGACY
 B) - you are going to add the 100A alt, a 40A backup (dunno where you got a
 40 that fits on the accessory port, the B&C is a 20), a 70 for the de-ice
 system
 C) - I'm assuming from all the alternators, that you are also going to have
 Lots of batteries, so when the alternator quits, you have backup?
 D) - you are going to add a full deice system, this will include cuffs on
 the wings, horiz stab, vert stab, etc
 E) - you want a full feathering prop setup
  Ok, did I say all of this is going into a Legacy?  Do I have all of this
 right?
  Your concern with the W&B is right on the mark... Have you done any research
 around all the above?  Might be worth while and here's why.
  *Most*, not all, Legacys weigh about 1550-1650+ empty, when they are
 finished per factory (normal prop, single battery/alt, no-deice, etc)
 Factory specified gross is 2200lbs.  With 66gals of fuel on board, that is
 400lbs of fuel.  See the problem?  From the looks of things, you are going
 to build an airplane that is going to be extremely marginal around max
 weight *and* W&B.  In an ES, no problem, but in a Legacy, I'm not sure it's
 wise.
  I guess I only bring this up, because you were *so* vocal around how *safe*
 you want to be, but now you encroaching on all the safety aspects that were
 designed into the airframe by violating its design, structurally with
 modifications.
  Shoot, and to think I was paranoid around prop selection and W&B, only
 because I have dual batteries.  Based upon your scenario, mines a no
 brainer....
  Best of luck, you are certainly on the *bleeding* edge, I just hope your
 dreams turns out as you expect.  But please be careful, I'd hate for you to
 *have* to use that parachute due to improper flight characteristics, or
 other.
  Alan

 

"""
 I am getting/waiting for the system for my plane. I made a place for the
 switch and lights in my panel. What did you do for the indicator lights?
 I have a 100 amp 24V and a 40 amp 24V back-up and I will have the 70V for
 the De-ice.
"""

--

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