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How does one build a 7 as a sportplane?

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JSD

Joined: 08 Jun 2006
Posts: 11
Location: Hahns Peak,CO

Posted: Fri Apr 06, 2007 8:40 pm Post subject: How does one build a 7 as a sportplane?

I know this has probably been covered here but I couldn't find it in a search.  I've been told that a 6 or 7 can be built as an lsa but I've never seen any detail about what would have to be changed or left out.  It's advertised to be 1400lbs gross with a 912S and 920lbs seems like quite a lot to have to drop. I would want to build a seven with a 912 and very basic VFR panal. I'm not a pilot yet and it's quite likely I'm missing the weight requirements concept. Does this just have to do with how it's registered and certifacated or how it's built? I guess I don't get it.

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Bob

Joined: 24 Oct 2006
Posts: 89
Location: Damascus, Maryland, USA

Posted: Sat Apr 07, 2007 4:00 am Post subject: Re: How does one build a 7 as a sportplane?

Welcome to the group.  Here's a link to a nice summary of the LSA requirements for both you and the airplane:

http://www.sportsplanes.com/About/LSARules/tabid/39/Default.aspx



Long story short is that the gross weight which you (as builder) assign the airplane can not be more than 1320#, regardless of what it's designed to.  For example, I'm building a Series 5 that has the 1400# wings, but I'll probably certify it as 1320#.  Same airplane, but someday when I sell it that should increase the potential pool of buyers.  



The key to viability of this is the empty weight (EW) and if you're careful to stay to the simple vfr airplane you mentioned, we have members who've proven the airplane can have less than a 800# EW.  The 1320#-800# gives 520# of useful load for two people and gas.  



It does take some planning and leaving off a lot of extra options, such as extra radios, bigger engines, etc.  You can use virtually any engine you want, but the more expensive 912/912S is used because the final weight typically seems to be at least 80-100# less than some of the more common alternate engines (O-200 & Subies). 



Bob

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rdmac(at)swbell.net
Guest

Posted: Sat Apr 07, 2007 5:54 am Post subject: How does one build a 7 as a sportplane?

I'll probably open a can of worms here but here goes. You need to be aware

that if you register your homebuilt in the E-LSA category you can not get

the repairman's cert unless you go through the 16 hr. course.  If you are

going to just be a Sport Pilot and not fly at night. And if you don't mind

paying someone else to do your annual inspections then it's not a problem.



	Roger Mac  



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andynfultz(at)bellsouth.n
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Posted: Sat Apr 07, 2007 6:16 am Post subject: How does one build a 7 as a sportplane?

Don't register it as an ELSA.  Just register it as an Experimental with a

gross not exceeding 1320#.  Andy



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jose_m_toro(at)yahoo.com
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Posted: Sun Apr 08, 2007 5:49 am Post subject: How does one build a 7 as a sportplane?

Max gross weight for lsa is 1320 pounds.  You will need to "loose" 80 pounds.



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