RE: OS .25 F & .25 FSR
Small planes were much more popular when those engines were new. They were sport/pattern engines. I think the FSR engines were the best engines OS made. Back then OS would make ring and ABC versions of the same engines so they could cover any desire. I would think the FSR would be in the 13-16k and the F a little slower but designed for more prop. The VF were the screamer ducted fan engine.
Posted on: 11/20/2009 10:55 PM by Author "TFF" in the forum "Glow Engines"
http://www.rcuniverse.com/forum/fb.asp?m=9269009

RE: OS 120 FS Idle
The way people got there ugly stick engine carbs in the right places is to "clock" the engine. Some would have an upright cylinder others at 45 or 90 degrees.
Posted on: 11/20/2009 5:34 PM by Author "TFF" in the forum "Glow Engines"
http://www.rcuniverse.com/forum/fb.asp?m=9268235

RE: Full Wing Flutter
I would have a spar span wise as said, and turn the more shallow tapered leading edge to carry through to the center of the wing. I would make the steep taper "added on" to the wing.
Posted on: 11/20/2009 10:50 AM by Author "TFF" in the forum "Scratch Building, Aircraft Design, 3D/CAD"
http://www.rcuniverse.com/forum/fb.asp?m=9267452

RE: CD ScaleDesigns Sopwith Snipe build
[:)]The flip shots are very realistic for the type. Aborted takeoffs with a tail dragger are tough things to do, real or model. Chopping the throttle and the rudder looses air and without flying speed the rudder does not function naturally. Braking and some luck keep real planes from flipping.
Posted on: 11/20/2009 9:50 AM by Author "TFF" in the forum "RC Scale Aircraft"
http://www.rcuniverse.com/forum/fb.asp?m=9267310

RE: CD ScaleDesigns Sopwith Snipe build
It is an excuse to check everything again.
Posted on: 11/19/2009 10:52 PM by Author "TFF" in the forum "RC Scale Aircraft"
http://www.rcuniverse.com/forum/fb.asp?m=9266599

RE: CD ScaleDesigns Sopwith Snipe build
I think the sensitive elevator will come from being tail heavy more than the airplane design. I would be more worried with not having enough elevator when the plane gets slow like landing approach than normal flight under power.
Posted on: 11/18/2009 11:29 PM by Author "TFF" in the forum "RC Scale Aircraft"
http://www.rcuniverse.com/forum/fb.asp?m=9264264

RE: CD ScaleDesigns Sopwith Snipe build
I think it looks pretty good; low looks good and high ok too. My bet is that you might like high better with the extra expo, but both should work fine. The only advice I got is make sure the ailerons are not reversed like 10 times, keep it on the ground to build airspeed more than you normally do, and if it jumps into the air, its tail heavy, so be ready. [;)]
Posted on: 11/18/2009 10:24 AM by Author "TFF" in the forum "RC Scale Aircraft"
http://www.rcuniverse.com/forum/fb.asp?m=9262584

RE: Futaba Users please reply!!!!!!
You will have to find a DIN plug and wire it into a charger of your liking. http://en.wikipedia.org/wiki/DIN_connector http://www.universal-radio.com/CATALOG/parts/dinconn.html
Posted on: 11/15/2009 10:40 PM by Author "TFF" in the forum "RC Radios, Transmitters, Receivers, Servos, gyros"
http://www.rcuniverse.com/forum/fb.asp?m=9256607

RE: Changing an airfoil profile
That wind tunnel test was used on a documentary ; maybe a PBS Nova, I am not sure.
Posted on: 11/15/2009 10:17 PM by Author "TFF" in the forum "RC Scale Aircraft"
http://www.rcuniverse.com/forum/fb.asp?m=9256535

RE: CD ScaleDesigns Sopwith Snipe build
I would set a low rate that you think should work and a high rate tempered with a good bit of expo just incase.
Posted on: 11/15/2009 10:08 PM by Author "TFF" in the forum "RC Scale Aircraft"
http://www.rcuniverse.com/forum/fb.asp?m=9256506

RE: Aero .35 Does anyone remember it?
HINESS 60 was a copy of the Russian engine. Although they all dont operate the same in specific, they all have to turn the piston motion into spinning motion. They are all a celebration of trying something different.
Posted on: 11/15/2009 6:44 PM by Author "TFF" in the forum "Glow Engines"
http://www.rcuniverse.com/forum/fb.asp?m=9255930

RE: Recommendations for Nose Heavy Osmose?
Lighter prop or spinner, lighter wheels, heavier pushrods in the tail, heavier battery placed backwards, lighter muffler.
Posted on: 11/14/2009 1:43 AM by Author "TFF" in the forum "Pattern Flying"
http://www.rcuniverse.com/forum/fb.asp?m=9252576

RE: 2.4 Glitching with Futaba 10 C
If the servos are fighting then you need something like a Match Box to electrically tune the fight out. If the servo is programable the slave servo's dead band can be opened up some so the other servo does not trip it.
Posted on: 11/4/2009 1:36 PM by Author "TFF" in the forum "RC Radios, Transmitters, Receivers, Servos, gyros"
http://www.rcuniverse.com/forum/fb.asp?m=9227819

RE: Future of the Scalemasters?
Although it would make it harder for the judges, I think a free style flight of 10 maneuvers where the plane is constantly watches to see if it performed a flight like a real plane instead of chopped up. One after another; if you are climbing for a 3 turn spin you are being judged. It should be like a pilot check ride in the real world; you are being observed all the time. I also believe all planes should do 10 flying maneuvers. If you build a plane with retracts and flaps, it should bring your flight realism score up to par but you should not be able to get a "free"9-10 because; if I build a fully scale shock absorbing fixed gear verses a set of Robart retracts on a P-51, should I not get the same consideration for a complex gear? I think the crowd would rather see 10 things even if a B-17 has to make 3 bombing runs to make 10; it is what that plane does. With the more complex planes, it becomes a contest to see how few flight maneuvers can be done and to get free scores.
Posted on: 11/4/2009 10:16 AM by Author "TFF" in the forum "RC Scale Aircraft"
http://www.rcuniverse.com/forum/fb.asp?m=9227432

RE: A PISTON QUESTION
With the original piston picture, your assuming that they knew what they were doing in the first place[:)]. To me it looks like the piston was small enough in diameter(bad casting) that the lathe could not clean it up, so they polished out the other imperfections like casting flash.
Posted on: 11/3/2009 5:58 PM by Author "TFF" in the forum "Engine Conversions"
http://www.rcuniverse.com/forum/fb.asp?m=9225895

RE: os 140rX
What kind of oil are you mixing to make your fuel? I like castor in fuel, but if it is getting sticky, you might need some pure synthetic oiled fuel(after run fuel?) to run through before you put it up at the end of the day; that and run the engine dry. The 30 run clean up sounds like lawyer talk for i dont want to fix it.
Posted on: 11/3/2009 5:19 PM by Author "TFF" in the forum "Glow Engines"
http://www.rcuniverse.com/forum/fb.asp?m=9225796

RE: Future of the Scalemasters?
With the US, we like pro sports. We dont have the Olympic spirit to do it for the honor of competition as a large group. Bigger is better for entertainment; that is why Top Gun works. The problem is Scale competition is not about the crowd but about the contestants, so unless there is a spin put on it, the average guy does not get it. That is why there is Top Gun envy, that everyone at regular contests should not have; because, it is a show in the form of a contest.
Posted on: 11/3/2009 5:08 PM by Author "TFF" in the forum "RC Scale Aircraft"
http://www.rcuniverse.com/forum/fb.asp?m=9225775

RE: CD ScaleDesigns Albatros CI build
Well the aileron servos are in the wing so the labels are off on the drawings. Are the bellcranks for the rudder cables? For the rudder a short pushrod paralleling the rod between the bellcranks going to one bellcrank with an extended arm. For one thing the hight of the servos dont match the plane that the cables are to be in.
Posted on: 11/3/2009 1:03 PM by Author "TFF" in the forum "RC Scale Aircraft"
http://www.rcuniverse.com/forum/fb.asp?m=9225228

RE: the blue headed OS .67 hanno special is back
Not NIB; been modified to "cheater" specs. So unless it had some historical value like won the World Champs and disqualified in a big scandel, is just a hacked up old engine that could be worth something if put right.
Posted on: 11/3/2009 11:12 AM by Author "TFF" in the forum "Classic Pattern Flying"
http://www.rcuniverse.com/forum/fb.asp?m=9224985

RE: A Bear, a Cub, and three cases of Ductape...
I know the father of the owner of the plane. The bad thing is, it is the guy's "car." It is how he gets to work. Another bad thing is that in Alaska, no insurance; to fix it, it comes out of the owners pocket.
Posted on: 11/1/2009 11:42 PM by Author "TFF" in the forum "Airplanes - Full Scale"
http://www.rcuniverse.com/forum/fb.asp?m=9221627

RE: Future of the Scalemasters?
I think what you want is more a Top Gun for the west coast than a championship that the Scale Masters is suppose to be. In this day and age no one wants to travel; they want everything at home. My buddy qualified for the Scale Masters this year, but it being 2000 miles away, no way. 2010 it will be close enough, if we can qualify, to matter. At least when the Nats traveled, there was variety of the winners form year to year. It is almost unfair to have a true championship because not all can be able to go to any one place. I would like to see regional championships after the qualifiers.
Posted on: 11/1/2009 11:26 PM by Author "TFF" in the forum "RC Scale Aircraft"
http://www.rcuniverse.com/forum/fb.asp?m=9221594

RE: Problem problem problem
Way to big a prop for a LA40. If it goes lean it could be overheating and stopping. My son's trainer has a 10x6 on one and has a low idle. On a ww1 fokker D8 I ran an FP40 with an 11x4. That prop needs to be on a .46AX.
Posted on: 10/29/2009 8:00 PM by Author "TFF" in the forum "Glow Engines"
http://www.rcuniverse.com/forum/fb.asp?m=9213442

RE: somethings not quite right here......
I have changes a bunch of those on airliners. One happened on a new plane and the VP of maint could not believe it and had to come to the hanger to see; he thought we were lying. Still windshield heat is a great thing. After one of the James Bond films some of the pilots started to worry about if it could come apart. The company took a cracked windshield to the gun range and put a clip of .44s into it. Not one went further than the surface layer. If you want some excitement be at fl400 and have the front windshield of a Citation11 start to creak.
Posted on: 10/29/2009 12:21 AM by Author "TFF" in the forum "Airplanes - Full Scale"
http://www.rcuniverse.com/forum/fb.asp?m=9211317

RE: Plane power system for engineering project
Build it as a biplane or a "pizza box" to get the wing area. I am not an electric expert, but max continuous of the motor is its safe rating. You can put a smaller prop on it and it will draw more amps and burn up. The motors dont self regulate; you have to match the whole system.
Posted on: 10/27/2009 11:25 PM by Author "TFF" in the forum "Questions and Answers"
http://www.rcuniverse.com/forum/fb.asp?m=9208113

RE: pica 1/5 spitfire problems
I would say if you can get a Pica kit at a good price, get it; they can go pretty high. They are not cad designed but they are not bad. They are about the best for the time frame it was designed in. I have never heard it called crap it is just a little dated; it still builds into a great plane. Build the tail light and cut out every thing not needed and expect to add nose weight because of the short nose, which is the way it goes when the real plane had 50% of its weight in the engine. I have one in the box waiting for me. I am slowly collecting stuff for it. I still fly a Jungmeister from them.
Posted on: 10/27/2009 10:44 PM by Author "TFF" in the forum "RC Warbirds and Warplanes"
http://www.rcuniverse.com/forum/fb.asp?m=9207971

RE: Flair Puppeteer Build
Looks Great! It looks like it will be flying soon.
Posted on: 10/26/2009 10:45 AM by Author "TFF" in the forum "Golden Age, Vintage & Antique RC"
http://www.rcuniverse.com/forum/fb.asp?m=9202950

RE: help with prop sizes
You have to remember that you will have a slightly less efficient engine as a twin over the same size single. I believe PAW makes a 60 so I would arm myself with at least the biggest they recommend for that engine and a tach and you will have to decide if it too much or too little a prop. It will probably take some trial and error and many props because you have a different dynamic for the engine and it will have a different red line rpm than a single.
Posted on: 10/26/2009 10:22 AM by Author "TFF" in the forum "Everything Diesel"
http://www.rcuniverse.com/forum/fb.asp?m=9202908

RE: low bounce wheels
I think it is leftover marketing from when Trexlar air wheels were around; probably '60s. I think everyone pretty much makes the same stuff with different shapes now.
Posted on: 10/26/2009 10:01 AM by Author "TFF" in the forum "Questions and Answers"
http://www.rcuniverse.com/forum/fb.asp?m=9202869

RE: Wing Mfg B-25 kit
I have seen the prototype fly and it flies well. It got dumb thumbed at a contest a couple of years ago; probably fixed by now. It has to be 15-20 years old.
Posted on: 10/25/2009 1:16 PM by Author "TFF" in the forum "Kit Building"
http://www.rcuniverse.com/forum/fb.asp?m=9200748

RE: pusher vs. tractor
In normal tractor setups, the PT6 is " backwards"; the intake is in the back of the engine and it exhausts out the front. It is a smart design that eliminates a driveshaft, but it was never designed to run the other way around.
Posted on: 10/25/2009 1:07 PM by Author "TFF" in the forum "Aerodynamics"
http://www.rcuniverse.com/forum/fb.asp?m=9200730