RE: landing bounce
Jeffsend, The bounce problem of my Pulse XT 40 went away after the tail wheel broke off and was replaced with a sullivan tail wheel bracket that raised the tail about an inch. Prop strikes are no more frequent than before.
Posted on: 9/15/2012 4:02 AM by Author "YellowBlueBird" in the forum "Aerodynamics"
http://www.rcuniverse.com/forum/fb.asp?m=11229093

RE: HOw much paint do I need?
There are some good posting on painting Glow models. Water based paint is popular among the gas set. Not so much with the glow engines. Butarate dope is not allthat hard to use and is fuel proof. According to some two part urathane serves as a fuel proof overcoat for other paint. Will it stick to water base? I do not know. Where do you Chapel Hill guys fly. My site is south of Fuquay. If you have time to go to the "fly for tots" event in September there will be lots of floks there to ask questions of. If you are interested I can show you some airplanes that have been painted with dope from Sig and one painted with Auto Rattle can. The rattle can so far has cost about as much as dope. four cans for a 40 size model. Jerry
Posted on: 8/29/2012 11:55 AM by Author "YellowBlueBird" in the forum "Kit Building"
http://www.rcuniverse.com/forum/fb.asp?m=11210484

RE: Safe voltage to fly
The problem was on the battery end of the cable. A solid push on an individule pin and the problem went away. The voltage jumped from 4.4 to 4.8 and the problem could not be made to come back. The pins have been released from the connector. They look OK and so does the crimp. It looks like this horse has been beat enough. Thanks for the help guys. Jerry
Posted on: 8/29/2012 11:34 AM by Author "YellowBlueBird" in the forum "Batteries & Chargers"
http://www.rcuniverse.com/forum/fb.asp?m=11210464

RE: Safe voltage to fly
Thanks Guver, I some times used an oversized power supply to find shorts on mother boards. Thanks for the reminder. These new fangled temp measuring things are probably better than my fingers at finding differences. So its off to HD to buy a new toy. The cable is identical to a servo extension cable. The thing that has made this interesting is that each of three servo extension cables gave me a slightly different voltage. As much as two tenths. What would have happened if this cable had been used as an elevator extension cable? The reading with this cable is about four tenths low. After it has been pummeled and beaten on in every way that we can think of I am going to cut the ends off and put new pins on. Each end can then be tested in someway and so can the middle. After a lot of testing it turns out that one of my three old batteries is bad. It will charge up to a good operating voltage and appears to work ok but by next morning it is down to 3.4 volts. P40 Driver, Rest assured that this is not going back in an airplane. The thing that bothers me is that there is not a good way to test extension cables and there are some that have been in my planes for five years and could be developing the same problem that this one has. Mo Lata Jerry
Posted on: 8/28/2012 5:26 AM by Author "YellowBlueBird" in the forum "Batteries & Chargers"
http://www.rcuniverse.com/forum/fb.asp?m=11208792

RE: Safe voltage to fly
It took me two months to isolate a problem that looked like a bad pack. The pack which had some age on it only charged to about 5.1 volts. after one flight it was down to 4.9 and then another flight down to 4.8 even below by third flight of ten minutes. A new high quality 1100 nicad pack was installed in the plane which gave good results on a cycler. after a few flights this pack also looked liked it had gone to pot. It looked like three old packs had all died in the same week and the new one did not look so good. Time to look somewhere else. It turned out to be the cable that attached the Futaba tester to the battery. I have checked that cable with a high quality ohm meter good down to .01 ohms. It checks the same as the good cable. Put the cable back in the tester and the battery reads about .5 volts lower than with the good cable. What would have happened if that cable had been used as an extension cable between the battery and receiver? I am still puzzled as to what is going on there. It has got to be resistance in that cable somewhere. any thoughts on how to analyze the cable further.
Posted on: 8/27/2012 5:06 PM by Author "YellowBlueBird" in the forum "Batteries & Chargers"
http://www.rcuniverse.com/forum/fb.asp?m=11208257

RE: Magnetic building system
This past winter I attached a sheet of steel to a very flat table using 3M contact spray adhesive. The sheet metal has a slight wave at each end. This is in the metal or the build up of glue. The table is still flat according to a straight edge. Is there a way to remove the sheet metal without damaging the wood underneath? The center portion of the surface is long enough to build a 36" wing half. The puzzle is that it was first attached with epoxy and had the same problem. The epoxy let go after some gentle encouragement. The spray 3M was put down very carefully to avoid any problems with making the final surface wavy so I think the problem is in the metal itself.
Posted on: 8/20/2012 7:09 AM by Author "YellowBlueBird" in the forum "Tips & Techniques"
http://www.rcuniverse.com/forum/fb.asp?m=11199566

ARFs shipping restricted
Does anyone know why the ARFs from AeroWorks sold by Tower Hobbies are marked "shipping restricted to some states" ? The same size airplanes from Great Planes do not have the same note.
Posted on: 7/30/2012 8:24 PM by Author "YellowBlueBird" in the forum "ARF or RTF"
http://www.rcuniverse.com/forum/fb.asp?m=11175398

RE: 2012 First in Flight Jet Rally - May 24-27
The note said it uploaded but where did it go?
Posted on: 5/28/2012 8:10 AM by Author "YellowBlueBird" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=11097295

RE: 2012 First in Flight Jet Rally - May 24-27
Saturday afternoon pic
Posted on: 5/28/2012 8:05 AM by Author "YellowBlueBird" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=11097286

RE: glow fuel
Thanks guys. Stick 40, I will be looking forward to hearing from you. Jerry
Posted on: 4/12/2012 6:01 AM by Author "YellowBlueBird" in the forum "Questions and Answers"
http://www.rcuniverse.com/forum/fb.asp?m=11038722

glow fuel
Is it possible to buy fuel in 55 gal durms? That was done years ago. A search today turned up noting in that area.
Posted on: 4/10/2012 2:59 PM by Author "YellowBlueBird" in the forum "Questions and Answers"
http://www.rcuniverse.com/forum/fb.asp?m=11036603

RE: Model Airplane News, then and now.
The good old days were great. My first airplane was a Trixter Beam. It died on the fourth flight due to an internal failure. I took it home in a paper bag. My second was a livewire trainer. It died on the 24th flight. It had an aerodynamic problem. I saw another Livewire trainer do the same thing. Pappy Debolt had a problem with that plane that none of us understood. My third airplane was a "Gramps" scratch built from MAN plans. It carried four c cells and a 22 volt battery. It lived for a number of years. People got tired of watching it fly. It was rudder only and had to be flown until the fuel ran out. A fox 19 would go for a long time on 6 ozs of go juice. At least two airplanes went home in a bag every weekend or were lost forever drifting off into the sky never to be seen again. If our club had that kind of luck there would not be enough members to pay to cut the grass. It was a beautiful day here in NC. I just got back from the field, ran the last of my eighth gallon of fuel through a Pulse 40. I have no idea how many flights that is. Not one radio or aerodynamic problem to date. I still love to build. There is a Taurus almost ready for its maiden flight, an ultra sport being painted; I am experimenting with auto paint on that one and a trainer that is being built to experiment with different aileron hinging. To survive in model aviation in the 50s and early 60s you had to be technically skilled and very tenacious.
Posted on: 3/13/2012 4:45 PM by Author "YellowBlueBird" in the forum "Kit Building"
http://www.rcuniverse.com/forum/fb.asp?m=10998953

RE: What kind of RETRACTS are on the market today
how do you tell if your airplane should use 95 degree or 90 or 85 degree retracts?
Posted on: 3/4/2012 5:39 PM by Author "YellowBlueBird" in the forum "Classic RC Pattern Flying"
http://www.rcuniverse.com/forum/fb.asp?m=10986569

RE: unusual hinge construction
This looks good for elevators and rudders. It is very near what I described. Substitute carbon tube and music wire running the length of the control surface and that would be it. For an aileron a support would be needed near the center unless barn door type could be used. For a center support cut a slot about 1/16 of an inch wide through the leading edge of the control surface and a matching slot in the trailing edge of the fixed surface, wing, rudder or aileron. Now install a thin support with a hole drilled to match the music wire. The question is what material could be used that would not stretch or ware the bearing point. I am envious of the quality of work I see on this site. Two good examples are in this thread. It was my intention to start another kit this afternoon. Unfortunately the world had another project in mind. A tire rolled off of the rim of a piece of equipment that I used this morning and the repair effort ate up my airplane time.
Posted on: 2/24/2012 1:58 PM by Author "YellowBlueBird" in the forum "Scratch Building, Aircraft Design, 3D/CAD"
http://www.rcuniverse.com/forum/fb.asp?m=10974232

RE: Debolt Cobra canopy
There is a debolt Cobra resting comfortable in my shop attic. The Canopy is in a shoebox. I have not looked at it lately but it is most likely OK. While we are on the subject is there a set of plans that includes the wing ribs. The kit plans do not include the rib templates. The original box is also in the attic. I sure would like to build another one. Just not willing to disassemble the wing to get the rib design. As I recall the canopy is very similar to the ones that come with the present day Tarus/Primus from home and hobby solutions. Jerry
Posted on: 2/21/2012 8:54 PM by Author "YellowBlueBird" in the forum "Scratch Building, Aircraft Design, 3D/CAD"
http://www.rcuniverse.com/forum/fb.asp?m=10970166

unusual hinge construction
Some where in the past I ran across a hinge made by placing a carbon tube in the center of a leading edge of control surface that had been routed by a halfround bit. A cove bit was used to route the traling edge of the fixed surface. The two surfaces were clamped together and slices were made about 1/16 of inch wide to allow for the instalation of a fixed part in the stabilizer or fin. A hole was drilled in the fixed part to match a wire passed through the tube. The question is what material could be used to make the fixed part of the hinge? It would have to rsist wear and stretching from the music wire passing through the tube. Thanks guys
Posted on: 2/21/2012 12:23 PM by Author "YellowBlueBird" in the forum "Scratch Building, Aircraft Design, 3D/CAD"
http://www.rcuniverse.com/forum/fb.asp?m=10969388

RE: Dirty Birdy Scratch Build questions
Does anyone know why Futaba does not reccomend the 9650 for airplanes. Only reccomended for surface and helicopters. "Can be used with 1/12 or 1/18 scale vehicles and electric helicopters" Are the nylon gears to weak for the vibration of glow engines? I have been considering using it for .20 size glow such as Flea Fly. Comments please.
Posted on: 11/22/2011 6:25 AM by Author "YellowBlueBird" in the forum "Classic RC Pattern Flying"
http://www.rcuniverse.com/forum/fb.asp?m=10823653

RE: SIMLA BUILD THREAD
Bird shot comes in 25 pound containers and is easer to deal with if the bag springs a leak. I use two zp lock baggies just in case.
Posted on: 9/15/2011 5:54 PM by Author "YellowBlueBird" in the forum "Classic RC Pattern Flying"
http://www.rcuniverse.com/forum/fb.asp?m=10718616

RE: For the paint gurus
David, Thanks for the research. Do you have any idea how these do over sig nitrate dope, or anyother brand? I use the dope to stick sig coverall fabric because it is easy to remove and restreach just by brushing on some thinner. Jerry
Posted on: 9/7/2011 5:02 PM by Author "YellowBlueBird" in the forum "Classic RC Pattern Flying"
http://www.rcuniverse.com/forum/fb.asp?m=10706282

RE: SIMLA BUILD THREAD
My experience with titebond on the doublers for a Primus. On the first one a weight was placed on them and they curled pretty badly. On the second one I got smart and clamped them between two pieces of 3/4 " furniture grade birch plywood with many hundred pounds of pressure. When the clamps came off the next day they went SSppoonnnig and curled just like the first ones. So much for clamps. See "RE: Phil Kraft's " post 80 for several suggestions on glueing doublers. doxilla suggested "laminating epoxy" which sounds like the most forgiving method. Is laminating epoxy the slow setting variety? This problem is one of the reasons that I have been reluctant to start building my KingAltair kit. Some experimenting with pre drying the titebond is certinly in order.
Posted on: 7/30/2011 5:02 AM by Author "YellowBlueBird" in the forum "Classic RC Pattern Flying"
http://www.rcuniverse.com/forum/fb.asp?m=10646253

RE: Not Much Action On Here Anymore
I got my drivers lic. when I was 17. Gas was around 20cents a gallon. We would get together pool our dimes. Buy three gallons put the two smallest girls in the trunk and go to the drive in movie. Total cost for the evening, one buck. Lets just say the girls got in free. A trip to the flying field costs about 20 dollars. 8 for gas and about 12 for glow fuel. And the movies were worth watching.
Posted on: 5/18/2011 8:52 PM by Author "YellowBlueBird" in the forum "Classic RC Pattern Flying"
http://www.rcuniverse.com/forum/fb.asp?m=10528659

RE: Another Blue Angel build
"one day" will arrive when you plan it and carry out the plan.
Posted on: 3/24/2011 3:55 AM by Author "YellowBlueBird" in the forum "Classic RC Pattern Flying"
http://www.rcuniverse.com/forum/fb.asp?m=10419339

RE: Bridi Super Kaos Build
How do you cut this material? Can it be used for bulk heads?
Posted on: 3/19/2011 2:41 AM by Author "YellowBlueBird" in the forum "Classic RC Pattern Flying"
http://www.rcuniverse.com/forum/fb.asp?m=10409262

RE: Ed Kazmurski's Taurus
Now that SIMLA has a few flights on it, how is the paint holding up?
Posted on: 2/8/2011 3:28 PM by Author "YellowBlueBird" in the forum "Classic RC Pattern Flying"
http://www.rcuniverse.com/forum/fb.asp?m=10321763

RE: Kaos 25 Build (Full Plans Added)
Is the dihedral brace shown on post 33 and in the plans straight across the top or is there an angle to it? It appears straight on top and angled on the bottom. Are my eyes playing tricks on me?
Posted on: 12/9/2010 8:07 AM by Author "YellowBlueBird" in the forum "Classic RC Pattern Flying"
http://www.rcuniverse.com/forum/fb.asp?m=10186168

RE: Ed Kazmurski's Taurus
Duane, How many coats of color were sprayed on? I have read that the type of paint that you used takes fewer coats than dope. Jerry
Posted on: 9/24/2010 5:02 AM by Author "YellowBlueBird" in the forum "Classic RC Pattern Flying"
http://www.rcuniverse.com/forum/fb.asp?m=10023730

RE: Building the Flea-Fly
Any idea what the model will weigh?
Posted on: 9/9/2010 11:00 PM by Author "YellowBlueBird" in the forum "Classic RC Pattern Flying"
http://www.rcuniverse.com/forum/fb.asp?m=9991789

RE: Building the Flea-Fly
Have you picked out your servos? One in the wing as the plan shows or one for each aileron? Are you going to use barn door style as in planes or go to strip style? If I ever get the primus finished this one may be next. Does anyone have a thought as to how much weight will be saved using modern electronics over the Kraft stuff shown? Today's 2.4 rx and two servos may weigh about what my old orbit servo weighed. Now let’s see a 1600 ma NIMH battery at less than half what a NiCad pack weighs. Could it be flown with an OS LA 15? Come to think of it there is a Kraft receiver and a couple of servos in a mason jar out in the barn with the lid screwed on tight to protect them from who knows what while I spent 30 years doing other things. Gotta buy some scales. If you are going to do barn door style ailerons please take lots of pictures and let us know your technique for cutting out the ailerons.
Posted on: 8/23/2010 10:13 PM by Author "YellowBlueBird" in the forum "Classic RC Pattern Flying"
http://www.rcuniverse.com/forum/fb.asp?m=9955471

Home and Hobby web site
Jeff's web site has been off. Anyone know why?
Posted on: 7/14/2010 7:13 PM by Author "YellowBlueBird" in the forum "Classic RC Pattern Flying"
http://www.rcuniverse.com/forum/fb.asp?m=9865468

RE: SIG HOG BIPE
venture 60 is marked discontinued. Do they plan to bring it back?
Posted on: 3/31/2010 7:53 PM by Author "YellowBlueBird" in the forum "Kit Building"
http://www.rcuniverse.com/forum/fb.asp?m=9628090