---------------------------------------------------------- Europa-List Digest Archive --- Total Messages Posted Sun 03/29/20: 2 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 07:44 AM - Re: Wingtip Misallignment (budyerly@msn.com) 2. 10:17 PM - Re: Re: Wingtip Misallignment (Brian Phillips) ________________________________ Message 1 _____________________________________ Time: 07:44:22 AM PST US Subject: Europa-List: Re: Wingtip Misallignment From: "budyerly@msn.com" Brian, Don't overlook that initial statement to check for twist. During the initial setting of the wing sockets, I use two level saw horses or trestles to set my socket and at the same time, I set the incidence using the root incidence board on both wings dead even. I also make a wing tip incidence board. I align the tops of these two boards and check each wing to the other. Carpenters have made dead flat tables for years with just two straight sticks set on the end to get the top level. I use the same technique. Stand back and check the "sticks" are dead level with no twist on one wing, then go to the other wing and set the incidence boards in the same place on the other wing and check. If the wings are very close (and they normally are). I press on. Then make no mistake, I set the flaps using the root incidence board exactly the same on each wing. If they aren't, fix it. One flap may be high, or set farther back, whatever, make them the same. If the flap brackets are off, make or buy new ones and get it right. Then set the ailerons with the flaps. If the tip isn't quite right (many times slightly high). Then I cut it. That careful work during the build will pay dividends during the trimming phase of your flight test period. But things don't always go as planned. See my Trimming 101 for a already built wing. Yes, I have cosmic T square holders made from nylon blocks that hold my T squares in exactly the same place. But I also rely on my Mark One eyeball, and that tip incidence board will come in handy. Best Regards, Bud Yerly Read this topic online here: http://forums.matronics.com/viewtopic.php?p=495461#495461 ________________________________ Message 2 _____________________________________ Time: 10:17:03 PM PST US From: Brian Phillips Subject: Re: Europa-List: Re: Wingtip Misallignment Bud, Thanks for that. I was relying on the wingtips being at the correct angle, and setting the ailerons up to match the wingtips, and then setting the flaps to match the ailerons. Now I understand I need to set the flap using the root incidence board. Then matching the ailerons to match the flaps. I will need to check for twist. As you say, I am being as careful as possible during the build to reduce trimming during test the test phase. Cheers, Brian Phillips, 489. On 30/03/2020 1:43 am, budyerly@msn.com wrote: > > Brian, > Don't overlook that initial statement to check for twist. > > During the initial setting of the wing sockets, I use two level saw horses or trestles to set my socket and at the same time, I set the incidence using the root incidence board on both wings dead even. I also make a wing tip incidence board. I align the tops of these two boards and check each wing to the other. > > Carpenters have made dead flat tables for years with just two straight sticks set on the end to get the top level. I use the same technique. Stand back and check the "sticks" are dead level with no twist on one wing, then go to the other wing and set the incidence boards in the same place on the other wing and check. If the wings are very close (and they normally are). I press on. > > Then make no mistake, I set the flaps using the root incidence board exactly the same on each wing. If they aren't, fix it. One flap may be high, or set farther back, whatever, make them the same. If the flap brackets are off, make or buy new ones and get it right. Then set the ailerons with the flaps. If the tip isn't quite right (many times slightly high). Then I cut it. > > That careful work during the build will pay dividends during the trimming phase of your flight test period. But things don't always go as planned. > > See my Trimming 101 for a already built wing. Yes, I have cosmic T square holders made from nylon blocks that hold my T squares in exactly the same place. But I also rely on my Mark One eyeball, and that tip incidence board will come in handy. > > Best Regards, > Bud Yerly > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=495461#495461 > > ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message europa-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/Europa-List.htm Web Forum Interface To Lists http://forums.matronics.com Matronics List Wiki http://wiki.matronics.com Full Archive Search Engine http://www.matronics.com/search 7-Day List Browse http://www.matronics.com/browse/europa-list Browse Digests http://www.matronics.com/digest/europa-list Browse Other Lists http://www.matronics.com/browse Live Online Chat! http://www.matronics.com/chat Archive Downloading http://www.matronics.com/archives Photo Share http://www.matronics.com/photoshare Other Email Lists http://www.matronics.com/emaillists Contributions http://www.matronics.com/contribution ------------------------------------------------------------------------------------- These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.