RE: Someone mentioned warped wing
and vertical. The flat bottom of the rib pattern sits on a flat surface. This is the jig. Washout may be built
Posted on: 9/10/2012 1:42 PM by Author "Iron Bottom" in the forum "Kit Building"
http://www.rcuniverse.com/forum/fb.asp?m=11224071

RE: Someone mentioned warped wing
top to bottom and check again. Do this on jig. Ribs are correct when no differences can be felt
Posted on: 9/10/2012 9:53 AM by Author "Iron Bottom" in the forum "Kit Building"
http://www.rcuniverse.com/forum/fb.asp?m=11223803

RE: Someone mentioned warped wing
Well, water will warp any wood product I've ever seen, unless it is perfectly sealed. It will even get to the almighty woodpecker meatloaf (MDF, chip board and particle board) given time. So my thinking is that any water based product will warp wood.
Posted on: 9/8/2012 12:00 PM by Author "Iron Bottom" in the forum "Kit Building"
http://www.rcuniverse.com/forum/fb.asp?m=11221909

RE: How many wing bolts?
That's true, Top Gunn. Another thing I didn't like was that a screw driver would cam out of the screw slot and usually ruin your nice covering job. But, if they do the job for you, good on you.
Posted on: 9/5/2012 12:31 PM by Author "Iron Bottom" in the forum "Kit Building"
http://www.rcuniverse.com/forum/fb.asp?m=11218500

RE: How many wing bolts?
Most of the low wing designs are, shall we say, are captured in the fuselage by formers fore and aft. Mid wings, generally use some kind of wing tube. I just don't see a wing shearing off without affecting the fuselage. High wing flat bottom. Maybe. I once witnessed a Sig Kadet hit a steel light pole and shear about 1/3 of the left side of the wing completely off. It flew on and landed
Posted on: 9/5/2012 10:08 AM by Author "Iron Bottom" in the forum "Kit Building"
http://www.rcuniverse.com/forum/fb.asp?m=11218357

RE: How many wing bolts?
I always use 1/4 od aluminum rod or thin wall 4130 chrome moly tubing if the plans show wooden dowels. You won't break one of these babies. Plus, they can always be salvaged and reused to give those poor trees a break. [:D] I also like aluminum bolts. There is not even enough weight to notice on the average .40-.60 size model. Nylon gets brittle as it dries out. Of course, nylon can be stored or boiled in water to retain it's strength. Not one of the things I want to do. Years ago, most flyers boiled their nylon props to make them last. Then, there are just poor quality nylon bolts available. I'll let someone else take this risk. If I was forced to use nylon bolts, I would use two.
Posted on: 9/5/2012 4:44 AM by Author "Iron Bottom" in the forum "Kit Building"
http://www.rcuniverse.com/forum/fb.asp?m=11218063

RE: Has anyone built a
Only picture I have seen is on the Air Age Store plans list. It is a nice looking model. I have a plan, but have not had the time to build one.
Posted on: 9/4/2012 6:49 AM by Author "Iron Bottom" in the forum ""1/2 A" & "1/8 A" airplanes"
http://www.rcuniverse.com/forum/fb.asp?m=11216801

RE: Northeast Aerodynamics Belair 40 bipe
Thanks for the replies, guys. Those kits were top notch. Wish I had gotten a few more of them. Does anyone have an idea of what the final ready to fly weight was?
Posted on: 8/28/2012 10:17 AM by Author "Iron Bottom" in the forum "Kit Building"
http://www.rcuniverse.com/forum/fb.asp?m=11209117

RE: First Time Kit Builder: Project GP Super Decathalon
You're right on the money, Buzzard Bait. It's close coupled and the stab is rather small. I checked the plans of the kit I have and the ratios (stab area to wing area, ECT) could stand a little adjustment. Adding two inches or so to the fuselage and a little more stab area would probably calm it down. But then it would turn into something like a Cub. In this case, I think this kit is exactly what Great Planes wanted. This thread has got me thinking about building another, I still have that 70 surpass also.
Posted on: 8/24/2012 8:04 PM by Author "Iron Bottom" in the forum "Kit Building"
http://www.rcuniverse.com/forum/fb.asp?m=11205095

RE: First Time Kit Builder: Project GP Super Decathalon
They will stall on take off If you are not going fast enough. Easy to avoid that. Power is what you want. Nail that OS 70 with a 14" low pitch prop and the one I built would be flying almost before you could react. One of the guys I flew with had a .60 2 cycle in his. With that Surpass, I don't remember adding any weight to balance it. It is indeed a fine choice. If you fly from a grass field a fast landing will rip the landing gear off if the field is not kept in good shape. And to quote Gray Beard, Don't take your eyes off of it.
Posted on: 8/24/2012 12:07 PM by Author "Iron Bottom" in the forum "Kit Building"
http://www.rcuniverse.com/forum/fb.asp?m=11204645

RE: First Time Kit Builder: Project GP Super Decathalon
I built one of those years ago. Get somebody with some experience to help you if you are not a very good flyer. They were known to snap when slowed down too much while landing. If I remember correctly, Great Planes issued a technical advisory that recommended building some washout into the wing. I built mine without any dihedral to help with the snapping. Engine was an O.S. 70 Surpass turning a 14X4 or 5 wood prop. Great flying aerobatic model and the snapping problem (certainly mine) was inexperience. Good luck with yours. Edit. It may be to your advantage to give Great Planes a call. Somebody there may be able to help you with that advisory..
Posted on: 8/23/2012 7:11 PM by Author "Iron Bottom" in the forum "Kit Building"
http://www.rcuniverse.com/forum/fb.asp?m=11204018

RE: wing loading
Take the area of a mono plane wing that would fly the airplane and add 40%. Divide by half for equal upper and lower wings, or you may have a longer wing for the top as long as the area stays the same. Edit. Probably not the answer you wanted. Biplanes are about 70% as efficient as monoplanes if that helps.
Posted on: 8/22/2012 1:32 PM by Author "Iron Bottom" in the forum "Aerodynamics"
http://www.rcuniverse.com/forum/fb.asp?m=11202426

RE: build manual needed for twin-aire 20 or sport-aire 20
You're welcome, aerowoof. Would you mind giving me the wing span on that .20 size? I'm building some smaller electrics now, and would like to reduce a set of the .40 size plans.
Posted on: 8/11/2012 4:04 PM by Author "Iron Bottom" in the forum "Kit Building"
http://www.rcuniverse.com/forum/fb.asp?m=11189694

RE: build manual needed for twin-aire 20 or sport-aire 20
Looks like a spam blocker sent that email back according to a message I received. I have a printed copy I could drop in the mail. Let me know.
Posted on: 8/10/2012 11:28 AM by Author "Iron Bottom" in the forum "Kit Building"
http://www.rcuniverse.com/forum/fb.asp?m=11188366

RE: build manual needed for twin-aire 20 or sport-aire 20
I think you'll get something you can use, aerowoof. Couldn't do a TIFF, so I hope a PDF will work.
Posted on: 8/8/2012 8:07 PM by Author "Iron Bottom" in the forum "Kit Building"
http://www.rcuniverse.com/forum/fb.asp?m=11186380

RE: build manual needed for twin-aire 20 or sport-aire 20
I found a manual for a Sport Air 40, aerowoof. Do you still need a copy?
Posted on: 8/7/2012 5:14 PM by Author "Iron Bottom" in the forum "Kit Building"
http://www.rcuniverse.com/forum/fb.asp?m=11184834

Northeast Aerodynamics Belair 40 bipe
I've heard these kits are very good flyers. Does anybody have any experience with this model? I have a kit that has been sitting in the box for years and I am finally contemplating building it. All replies appreciated.
Posted on: 8/7/2012 7:25 AM by Author "Iron Bottom" in the forum "Kit Building"
http://www.rcuniverse.com/forum/fb.asp?m=11184142

RE: build manual needed for twin-aire 20 or sport-aire 20
I think I have a manual for a forty size Sport Air. I'll try to find it.
Posted on: 8/7/2012 5:22 AM by Author "Iron Bottom" in the forum "Kit Building"
http://www.rcuniverse.com/forum/fb.asp?m=11184018

RE: Another Kadetito Build
I expect you'll be OK with the dihedral, sirzepp. I checked a model design book I have, and for a trainer, an angle of 6-8 degrees was specified for 3 channel trainers. Think I'll go with 9 degrees. A little bit either way probably won't matter.
Posted on: 7/29/2012 6:10 AM by Author "Iron Bottom" in the forum ""1/2 A" & "1/8 A" airplanes"
http://www.rcuniverse.com/forum/fb.asp?m=11173128

RE: Another Kadetito Build
Thanks, carlosam.
Posted on: 7/28/2012 4:41 AM by Author "Iron Bottom" in the forum ""1/2 A" & "1/8 A" airplanes"
http://www.rcuniverse.com/forum/fb.asp?m=11172041

RE: Another Kadetito Build
Looking good, sirzepp. I have a question about the dihedral in the wing. I am working on a Kadetito also and on the plans I have there is no actual figure for the amount of dihedral. Measuring the angle of the dihedral brace with a protractor I get 9.5 degrees. Is there a figure on the plans you have?
Posted on: 7/26/2012 5:38 AM by Author "Iron Bottom" in the forum ""1/2 A" & "1/8 A" airplanes"
http://www.rcuniverse.com/forum/fb.asp?m=11169822

RE: Dyna Flite Super Cub Questions
Thanks, Guys. I'll keep the things you mentioned in mind while considering building this thing.
Posted on: 7/8/2012 3:29 PM by Author "Iron Bottom" in the forum "Kit Building"
http://www.rcuniverse.com/forum/fb.asp?m=11147872

RE: Just bought a Skyward 25 kit, but need some info/help
I remember that brand name, but never saw one. I remember them as being an early ARF, although they could have been kits. The only thing I can suggest is to go to the RCM Plans site. Go to requested articles and toward the bottom of the page there are some design your own articles by Chuck Cunningham and Ken Willard. Good luck finding plans. EDIT. I couldn't see what was left in the box
Posted on: 7/8/2012 1:09 PM by Author "Iron Bottom" in the forum "Kit Building"
http://www.rcuniverse.com/forum/fb.asp?m=11147715

RE: M.A.N. Air Age plans sale
If I'm not mistaken, they also have the plans on sale sometime around Christmas.
Posted on: 7/8/2012 6:06 AM by Author "Iron Bottom" in the forum "Kit Building"
http://www.rcuniverse.com/forum/fb.asp?m=11147312

Dyna Flite Super Cub Questions
I have a kit and an old Quadra 42 that have been sitting around for years. Are these kits worth the time and money to get in the air? Anything to watch for, building tips, flying characteristics ect. All replies greatly appreciated.
Posted on: 7/7/2012 6:56 AM by Author "Iron Bottom" in the forum "Kit Building"
http://www.rcuniverse.com/forum/fb.asp?m=11146350

RE: Four * Forty modification?
I've always built D-tube wings. That sheeting will most likely be in front of the balance point, which will be a good thing in most cases. The added strength and ease of handling is worth every gram. Weight? Maybe an ounce. The best thing to do is throw that lite ply in the trash. It is heavy, weak (for plywood) and usually warped.
Posted on: 6/30/2012 4:49 AM by Author "Iron Bottom" in the forum "Kit Building"
http://www.rcuniverse.com/forum/fb.asp?m=11137453

RE: Scratch built ??
I forget to mention something, Slowstang. Google RCM Plans. Go to requested articles. The Chuck Cunningham and Ken Williard aryicles will be a big help. Print those articles. A lot of older and valuable info has been taken off the web. So, how did it fly?
Posted on: 6/28/2012 5:41 AM by Author "Iron Bottom" in the forum "Park Flyers & Backyard Flyers"
http://www.rcuniverse.com/forum/fb.asp?m=11134923

RE: Super Sporster Bipe
Homer, I'm having an email problem. Mac, of course. I can receive but not send. Road runner is working on the problem and they are telling me it may take a couple of days. If you would like me to call, you can send your phone number to gwilliams20@nc.rr.com along with a good time to call and I will get back to you.
Posted on: 6/20/2012 7:17 PM by Author "Iron Bottom" in the forum "Kit Building"
http://www.rcuniverse.com/forum/fb.asp?m=11125974

RE: Super Sporster Bipe
I have the plans as well as a kit, homer. I don't think I will ever build this kit. If you would like, I am willing to sell the kit, which would include the plans, or get you the plans. Just let me know.
Posted on: 6/20/2012 7:31 AM by Author "Iron Bottom" in the forum "Kit Building"
http://www.rcuniverse.com/forum/fb.asp?m=11125050

RE: Super Sporster Bipe
I think I do, homer. I'll check in the morning and let you know.
Posted on: 6/19/2012 7:15 PM by Author "Iron Bottom" in the forum "Kit Building"
http://www.rcuniverse.com/forum/fb.asp?m=11124566