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Post on Help identifying ribs in Avid Magnum
By Rhegarty, postedNewbie here, with a ton of questions and don't really know where to begin. I have just acquired a new to me Magnum project. Well, just a couple set of wings at the moment. I have spent a lot of time reading through the forum and have came to a few conclusions, but I need help. Both sets of wings are no good as they sit and need to be rebuilt. Starting with just 1 set for now, I have questions and concerns.
1. The shape of the ribs don't seem right, they are not flat and definitely not an under camber as you can tell in the pics
2. With the "convex" shape, the jury strut mounts and lift strut mount are essentially flush with the fabric
3. At 108" the spars are extended (very poor construction), The front spar extension is installed fairly straight, but the rear spar angles several degrees downward and has about a 1 1/2" drop over the last 2'. I did not capture this to show you but it is very twisted at the end and I have never seen anything like it.
My first and most important question is can these reasonably be rebuilt? I know that is a generic question, but that is the question I am after. These wings started life I believe as HH's because the wall thickness is .083" and rib placement is 12" apart. What concerns me is the 108" length where the splice begins. Can I cut there and rebuilt past that point? I have called around trying to find .083" tube and all I can find is .065" and .125". Next is the rib, the general consensus I am reading is that the under camber design is more desirable? The second set of wings I have do seem to have the correct rib profile, but the spars are .065" with 18" spacing.
I can either laser cut or CNC new ribs, as I have all the equipment to do this and more. I think the easiest and best bet would be to start with new spars, but I cannot find .083" wall material. I've even thought about just stepping up to .125" which was an increase of about 6lbs per wing if I remember correctly. I know this is a big can of worms, but I needed to start somewhere and introduce myself so I figured why not this way. I'm really excited to go down this very frustrating and painful road so be easy on me to start! Thoughts?
Russ
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I am looking for a set of speed-wing ribs for an Avid Mk IV. Anyone have a set? Or perhaps would lend me one as a pattern?
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Does anyone have any 2.5" OD, .083" wall spar tubing that they would be willing to sell? I need enough to do 2 wing extensions. Please PM me if you do.
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Post on flaperon tips. in Kitfox II
By dslfarms, postedi am looking for flaperon tips with a flat bottom? I spoke with murlewilliamsaviation.com and they only have curved bottom and top.
anyone know where to find tips with a flat bottom?
thanks in advance!
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Post on Wing lift strut fuselage attach point side in Fat Avids, Avid Plus and Airdale
By Airdale RW, postedDoes any one here have a good picture of the wing lift strut end that attaches to the fuselage not painted. Folding wings back and noticed crack in paint. Chipped paint away to look closer and it looks like there are two tabs on the lower and top flange that sandwich the fuselage attach lug. Just want to see if this is normal construction and if these are 2 steel plates together. I wonder why would they not be welded together or do I have more to worry about? First post, little history of the Airdale flyer I have. Built by my father and finished in 2002. He passed away 3 years ago and kept plane in family. Just about 900 hours on the airframe so needing to keep a closer eye on her as she ages. Enjoying all of the 100 hours I have flown in this aircraft.
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This is my first post. I am at the beginning of a build and just mounted the wings on the fuse. I've got kitfox wings with the old spar where you don't have to insert the I-Beam. I understand that scuffing the spar with 220 grit is acceptable according to the manual. However, underneath the strut brace, the spar was prepped with something closer to 80 grit. Since the strut brace is riveted and hysoled to the spar, this is like a "doubler" or reinforcement. Of course, I am not sure.
I believe I have to start over which sucks greatly, but was wanting some concurrence.
Pictures show the scratches-(no other parts of the spar are scratched as such).
Thanks and look forward to your responses and expertise-
Joey
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Post on What model were the speed and aerobat wing introduced in Avidfoxflyers General Hangar
By TSoftware, postedAnyone what model the speedwing and aerobat wing were introduced. The history that I found here doesn't mention them until model C. I have a possible B model that appears to have an aerobat wing, it is 23'8" long and undercambered, but it has 18" ribs on it.
TIA
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Post on Wing Fuel Tank Needed in KitFox General Forum
By handles, postedTo all the Kitfox owners out there, wonder if you could help me or do you know?
I have an Avid Speedwing Mk 4, the 13 gallon right wing tank (as from the cockpit) has rotted due to ethanol. I see that Kitfox sell ethanol resistant tanks, will a Kitfox tank fit an Avid and if so which model Kitfox?
Simon G-BUIR
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Post on Wing Fuel Tank Needed in Avid Model IV
By handles, postedAnyone out there help me out? I have an Avid Speedwing Mk4 UK based. The fuel tank has rotted due to ethanol. I have removed the tank.
Few questions,
Does anyone have a spare tank I could buy for shipment to UK, its 13 gallon right wing (looking out when in cockpit). I could pay by Paypal if needed
Will a Kitfox tank fit an Avid Wing, if so which Kitfox model tank? I see Kitfox have ethanol resistant tanks
Has anyone made an aluminium tank?
Many thanks Simon G-BUIR