[NSRCA-discussion] Genesis revisited

[Richard Strickland]

Just a thought--if its been sitting in a box of unknown orientation for some time, it might not hurt to let it sit in the sun for a while before doing anything and see if any of its misalignment goes away--or gets worse... (Murphy follows me around...)

RS
 
> Date: Sat, 10 Apr 2010 22:08:33 -0600
> From: jgghome at comcast.net
> To: nsrca-discussion at lists.nsrca.org
> Subject: Re: [NSRCA-discussion] Genesis revisited
> 
> Verne,
> 
> Thanks for the good suggestions. I will set up to reference off the fin 
> centerline.
> Although we cut the holes for the wing and stab tubes, no reinforcing 
> has been done, no epoxy used- so modifications will be easy. Probably 
> have to shim the gear slightly to get the plane to sit level. Sounds a 
> lot easier and much more likely to work than trying to straighten the tail.
> What are you using for a reference to establish stab incidence = 0 and 
> check the downthrust of the nose ring if you are not trusting any marks 
> on the fuselage?
> 
> Thanks again,
> 
> John
> 
> Verne Koester wrote:
> > John,
> > You may be far better off in the long run cutting out the wing and stab tube
> > sockets. Then jig up the fuse so the fin is straight up and down (90 degrees
> > to your table). At that point, you just need to glue the new sockets in so
> > the tubes are parallel to the table. I realize I'm over-simplifying the
> > process, but I think it would give you the best chance for long term
> > success. If you don't ruin the fin by bending it with a heat gun, it will
> > almost certainly end up where it started after being out in the sun for
> > awhile. BTW, I never trust alignment marks molded into a fuse. My first
> > alignment steps are to make the fin perpendicular to my table and check out
> > the down thrust molded into the nose ring at the same time. Once those are
> > set, I make my own marks (referenced off my table) as close to the molded-in
> > marks as possible. When you consider that two fuse halves are joined in the
> > center, even a few thousands shift somewhere can equate to things being way
> > out whack at the wing tips. One of many reasons I prefer kits where the
> > builder glues in the sockets rather than the manufacturer.
> >
> > Hope this helps
> >
> > Verne Koester
> >
> > -----Original Message-----
> > From: nsrca-discussion-bounces at lists.nsrca.org
> > [mailto:nsrca-discussion-bounces at lists.nsrca.org] On Behalf Of John Gayer
> > Sent: Friday, April 09, 2010 10:47 PM
> > To: NSRCA Mailing List
> > Subject: [NSRCA-discussion] Genesis revisited
> >
> > I'm helping someone from our club build an old Genesis kit. Everything 
> > was going along just fine until it came time to install the wing and 
> > stab tubes. The wing tube is just fine, ends up parallel to the belly 
> > pan within a millimeter at the ends of the tube running through the 
> > fuselage.
> >
> > The problem occurs at the tail end. The fin is 12 mm out of plumb and 
> > the stab tube(using the indicated marking on the fuselage) is tipped 
> > about 10 mm in the same direction as the fin. Also the marks on the 
> > fuselage for the stab tube and the front pin are not the same distance 
> > up from the fuselage bottom so it appears these marks were not 
> > accurately set in the mold. Rather a mess.
> >
> > A long time ago when I ran into the crooked fin problem , I managed to 
> > get it lined up by using a heat gun and gentle pressure. Then using 
> > braces, tail post and a former, try to lock in the new fin position.
> >
> > Anyone have any experience with this netbox kit that ran into any of 
> > these problems or were all the others perfect right out of the box?
> >
> > I would really appreciate any guidance on this that I can get.
> >
> > Thanks
> >
> > John
> >
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> >
> >
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> >
> > 
> 
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