RE: Oil content - gasoline vs. glow engines
Also gas engines are usually larger, thus less wetted area per displacement. This also reduces the amount of oil because less oil is needed for cooling purposes. [i]I think.[/i]
Posted on: 11/20/2009 8:55 PM by Author "Sport_Pilot" in the forum "Glow Engines"
http://www.rcuniverse.com/forum/fb.asp?m=9268709

RE: goldberg 1/2 a blazer
I don't care how much it would sell for. I bought mine around $20 as I recall. I just want to know the best way to build it. I suppose it would work OK as a free flight with the Black Widow, but I am not sure about how fast the timer would shut down the engine when it simply plugs the vent. Thinking it would be better R/C. Hey, if I don't get any good tips, I just may go EP. Ya wouldn't want me to do that would you?
Posted on: 11/18/2009 3:31 PM by Author "Sport_Pilot" in the forum ""1/2 A" & "1/8 A" airplanes"
http://www.rcuniverse.com/forum/fb.asp?m=9263209

RE: goldberg 1/2 a blazer
I know this is very old but found this in a search. I too built one as a kid and am considering buiding a kit I bought a few years ago. I believe it has plans but not with profiles of the ribs. Is the kit worth keeping intact? Can you copy the balsa sheets to get a tracing of the ribs? Maybe a way someone can do a laser cut version? Also I have a Cox Black Widow but not sure about using a timer with this. I could convert to R/C but I would then like an engine that has a throttle. I think a Norvel might be too much power. The hottest engine shown on the planes is the old .049 Honet. Maybe a TT .07? Or would that be too heavy?
Posted on: 11/18/2009 9:40 AM by Author "Sport_Pilot" in the forum ""1/2 A" & "1/8 A" airplanes"
http://www.rcuniverse.com/forum/fb.asp?m=9262495

RE: glow plug re-thread
Helicoil doesn't make the 1/4-32, but apparently recoil makes a similar product in 1/4-32.
Posted on: 11/17/2009 1:49 PM by Author "Sport_Pilot" in the forum "Glow Engines"
http://www.rcuniverse.com/forum/fb.asp?m=9260379

RE: How important is dihedral for a Low Wing?
I doubt there would be enough effect from tiliting the wing tips. It requires considerable anhedral to stop the roll coupling in my Big Stick. The original Ugly Stick was supposed to be a second trainer, for which it does the job fine.
Posted on: 11/17/2009 9:03 AM by Author "Sport_Pilot" in the forum "Aerodynamics"
http://www.rcuniverse.com/forum/fb.asp?m=9259840

RE: How important is dihedral for a Low Wing?
The point is that my stick with anhedral will fly exactly like a low wing stick with dihedral. That is if the dihedral is just enough to cancel out the reverse roll coupling. No need to correct the roll in stall turns, knife edge, etc.
Posted on: 11/17/2009 12:44 AM by Author "Sport_Pilot" in the forum "Aerodynamics"
http://www.rcuniverse.com/forum/fb.asp?m=9259434

RE: How important is dihedral for a Low Wing?
[quote]IF I WANTED TO FLY PATTERN, A STICK WOULD NOT BE MY CHOICE, BUT I CAN KNIFE EDGE AND STALL TURN ONE JUST FINE!. I'M STILL WORKING ON SMOOTH FOUR POINTS!. [/quote] Well when you are stall turning, it and knife edging it, what are you doing with the ailerons? Doesn't it aggrevate you at least a little?
Posted on: 11/16/2009 4:54 PM by Author "Sport_Pilot" in the forum "Aerodynamics"
http://www.rcuniverse.com/forum/fb.asp?m=9258334

RE: How important is dihedral for a Low Wing?
[quote]By the way, My Sig Somethin Extra and my Morris Balsa Nova have no dihedral and fly just fine also. [/quote] But they are not a sholder wing or high wing without anhedral.
Posted on: 11/16/2009 2:52 PM by Author "Sport_Pilot" in the forum "Aerodynamics"
http://www.rcuniverse.com/forum/fb.asp?m=9258068

RE: How important is dihedral for a Low Wing?
[quote]I totaly disagree, they fly just fine for me, especially in wind. Call me a novice if you want but I can fly a Stick or 4star just fine, even a novice like me knows the difference in how they fly.[/quote] Learn to do knife edge flight, four point rolls, clean stall turns. If you are doing all of these well with any unmodified stick, then you need to fly pattern profesionally.
Posted on: 11/16/2009 2:51 PM by Author "Sport_Pilot" in the forum "Aerodynamics"
http://www.rcuniverse.com/forum/fb.asp?m=9258063

RE: How important is dihedral for a Low Wing?
Sticks fly horribly, until you cut the wing and put in anhedral. If built as a low wing then it should have a bit of diehedral.
Posted on: 11/16/2009 12:58 PM by Author "Sport_Pilot" in the forum "Aerodynamics"
http://www.rcuniverse.com/forum/fb.asp?m=9257803

RE: Considering giving nitro flight a try.....any advice?
You don't need nitro. Just methanol and oil. Get any good .40 trainer. I lean toward the Sig Kadet trainer, but any high wing trainer will do. Prefer the TT .40 or .46 myself.
Posted on: 11/13/2009 3:46 PM by Author "Sport_Pilot" in the forum "Beginners"
http://www.rcuniverse.com/forum/fb.asp?m=9251404

RE: Kadet Senior Engine
[quote]The wing is heavily modded and has 1 inch of dehidral in it compared to the 6 inch stock one . And barndoor flaps and ailerons too. [/quote] Has nothing to do with it. My wing was moded with less dehidral and strip ailerons. It has to do with the high lift wing, and a lot of it, the wing incidence, thust line, and huge elevator. With the engine pointing at almost 30 degrees down, I wonder just how much pulling it will do? Might be better to shim the back of the wing instead of the engine?
Posted on: 11/13/2009 1:15 PM by Author "Sport_Pilot" in the forum "Glow Engines"
http://www.rcuniverse.com/forum/fb.asp?m=9251135

RE: Kadet Senior Engine
If you are going to put in a .91, either shim up the back of the wing, or attach a boat anchor. The .70 would be enough for towing most gliders. Heck even a strong .40 would do for most gliders, you don't have to tow a glider very fast. If towing very large gliders then perhaps a Senior Telemaster would be a better plane. With a TT Pro .46 I had a stack of about 6 washers on the back of the engine to keep it from climbing everytime throttle was applied. Without the washers I would have to give it more down than I could apply with trim.
Posted on: 11/13/2009 10:57 AM by Author "Sport_Pilot" in the forum "Glow Engines"
http://www.rcuniverse.com/forum/fb.asp?m=9250825

RE: Fox problem
Rocket .35? Says Rocket on the side.
Posted on: 11/13/2009 9:21 AM by Author "Sport_Pilot" in the forum "Glow Engines"
http://www.rcuniverse.com/forum/fb.asp?m=9250640

RE: fuel tank
[quote]ORIGINAL: cymaz Here is the set up from the OS 46AX. I put my fill pipes up the top of the tank but its up to you. [/quote] I would suggest putting the vent down, and adding a shorter piece of tubing with clunk. This is a uniflow setup. Not a requirement in a Cub but if you are going to three line you might as well.
Posted on: 11/13/2009 8:13 AM by Author "Sport_Pilot" in the forum "Glow Engines"
http://www.rcuniverse.com/forum/fb.asp?m=9250510

RE: Kadet Senior Engine
[quote]My suggestion would be to select and engine on the high side recommended for the model. More power never hurt anyone (disclaimer, I am a power junky) and can get you out of trouble. Besides almost all planes have some kind of throttle these days! [/quote] A .40 is on the high side. It is the maximum size two stroke recommended. Anything else just causes trim problems. It takes off grass just fine. I could use a little more power on a hot day, but a more powerful fourty than the ole K&B would do that. I have seen them powered with .35's just fine.
Posted on: 11/13/2009 8:00 AM by Author "Sport_Pilot" in the forum "Glow Engines"
http://www.rcuniverse.com/forum/fb.asp?m=9250493

RE: A strange question coming from a motorized bicycle enthusiest
[quote]if you are talking about the gasoline engines, remember that the gas engines all started out as small industrial engines, weedeaters, chainsaws, trimmers, and blowers. They would strip off all the parts they didn't need and use a lathe to cut off the fan blades on the flywheel and then make a motor mount and a propellor adapter for them. later they dispensed with the magneto and flywheel and went with CDI ignition modules instead saving more weight. the larger gas engines are derived from chain saws. The high performance engines are derived from the performance parts used in chain saws for the lumberjack competitions. [/quote] The better ones are special built for model aircraft. [quote]For a engine powered bicycle, you usually want fan cooling to cool off the engine, and a flywheel to get it to idle good, and a magneto so you don't need a battery for the ignition system. So you wind up putting the weight back on the engine to make it useable. You might be able to dispense with the fan cooling though, it depends. [/quote] Which is why I mentioned the gas powered R/C car engines. [quote]They actually use those little bicycle engines for model boats and cars as is. Pull starter, magneto, fan cooling and gasoline. But for boats they add a water cooled exhaust or muffler to it. [/quote] Hmm. They seem more compact. When you get right down to it I doubt you will do much better than the present gas bicycle engines. A model airplane manufacture Fox acutally built some of them. I would think if the smaller model engines could be adapted and work better, even converting them to gas with the proper porting, then he would have done so.
Posted on: 11/4/2009 4:01 PM by Author "Sport_Pilot" in the forum "Glow Engines"
http://www.rcuniverse.com/forum/fb.asp?m=9228104

RE: Saito 50th anniversary Gold plated 30
[quote]ORIGINAL: Hobbsy Tommy, I'll bet you could gold you own for $15.00. [/quote] Gold is over $1000 an ounce. At $15 it would have to weigh less than .015 of an ounce. Not to mention the wasted gold that did not plate.
Posted on: 11/4/2009 3:42 PM by Author "Sport_Pilot" in the forum "Glow Engines"
http://www.rcuniverse.com/forum/fb.asp?m=9228059

RE: Saito 50th anniversary Gold plated 30
All gold? Geez you could melt it down and sell it for more than that!
Posted on: 11/4/2009 2:47 PM by Author "Sport_Pilot" in the forum "Glow Engines"
http://www.rcuniverse.com/forum/fb.asp?m=9227965

RE: Saito 50th anniversary Gold plated 30
Is it really gold plated? If so the plating could be worth $299.
Posted on: 11/4/2009 2:46 PM by Author "Sport_Pilot" in the forum "Glow Engines"
http://www.rcuniverse.com/forum/fb.asp?m=9227962

RE: A strange question coming from a motorized bicycle enthusiest
Actually the fact that the carbs need to be adjusted each time is not because the fuel is methanol. But because of the wide acceptable fuel mixture ration of methanol fuel, they can get away with a cheap two circuit carb with no accelarator pump. However a Walbro carb made for methanol fuel would hold up better than a gas engine. The nitro fuel is expensive, but its a lot worse than that. They get their power because a lot of fuel can be burned, so you will be using a lot more fuel as well. Instead of glow power I would be looking at the powerful gas engines that are made for model planes, they are much more powerful than the engines used for chainsaws, blowers, and weed wackers, but get good economy because they use gas. If you want more power consider converting the carb to use alcohol and use E85 instead of unleaded. You could also look at the engines used for the larger gas R/C cars. It may be easier to convert those.
Posted on: 11/4/2009 2:43 PM by Author "Sport_Pilot" in the forum "Glow Engines"
http://www.rcuniverse.com/forum/fb.asp?m=9227953

RE: Evolution .45 PTS return fuel from tank is very dark
Is the fuel in the aircraft tank turning dark? I think you may have a loose muffler or the aforementioned baffle. This is caused from aluminum contamination of the fuel. You may be emptying the tank into you fuel jug at the end of the day which can also turn it dark. The aluminum should not make a huge differance in how it runs, though a large amount might. If your fuel jug is not capped tightly it may asorb enough moisture to make a differance, though it would be a considerable amount.
Posted on: 10/30/2009 2:07 PM by Author "Sport_Pilot" in the forum "Glow Engines"
http://www.rcuniverse.com/forum/fb.asp?m=9215315

RE: Anyone familiar with CS engines?
Never saw the CS engines, but the racing engines seem to be copies of European designs.
Posted on: 10/30/2009 1:46 PM by Author "Sport_Pilot" in the forum "Glow Engines"
http://www.rcuniverse.com/forum/fb.asp?m=9215271

RE: Meaning of TOC
[quote]ORIGINAL: pmw Rock, Yes the paper computer flight plans are a thing of the past, but the same info and acronyms are presented to the pilots on the cockpit screens and flight plan computer screens. That's the info that the guys missed enroute to MSP. There are numerous visual warnings presented to the pilots if they miss such things as SOD. But, if you can't see the screens, you can't see the warnings. Personal lap top computers opened in your lap will block your view of the cockpit screens. As I said, Big Mistake!! [/quote] Why were these guys not busy looking for traffic? Did they think the controllers were the only ones who were to make sure they were not about to run into another plane? What if annother ballon boy ballon made of plastic which the radar cannot see, got in their way and injested by the engines? Or a flock of geese? I think losing their license is too light, they should pay big fines as well.
Posted on: 10/29/2009 2:51 PM by Author "Sport_Pilot" in the forum "ARF or RTF"
http://www.rcuniverse.com/forum/fb.asp?m=9212614

RE: Meaning of TOC
To save yourself that final trip to the tub! There are lots of different meanings for TOC outside of modeling. http://en.wikipedia.org/wiki/TOC
Posted on: 10/29/2009 1:55 PM by Author "Sport_Pilot" in the forum "ARF or RTF"
http://www.rcuniverse.com/forum/fb.asp?m=9212450

RE: Fox problem
It's one of the 36's there were several. Try soaking the engine in fuel. That will disolve most of the congealed castor thats causing the piston to stick.
Posted on: 10/28/2009 3:34 PM by Author "Sport_Pilot" in the forum "Glow Engines"
http://www.rcuniverse.com/forum/fb.asp?m=9209706

RE: Meaning of TOC
Sure is, contest series is dead though, but it is still used to define the type of models flown at that event. When was the last TOC? 2001? Geez what a bad year. Make sure you slit your wrists in the bathtub so its easy for someone else to clean up.
Posted on: 10/28/2009 1:50 PM by Author "Sport_Pilot" in the forum "ARF or RTF"
http://www.rcuniverse.com/forum/fb.asp?m=9209453

RE: What kills an ARF after a short production run?
I remember one time the review had the same construction photo's as the manual. Can't remember what that was though. The Skylane was an early scale like trainer, it has nothing over present day trainers, so why would it sell well? Bad choice IMO
Posted on: 10/28/2009 1:46 PM by Author "Sport_Pilot" in the forum "ARF or RTF"
http://www.rcuniverse.com/forum/fb.asp?m=9209443

RE: Club FOX!
[quote]ORIGINAL: NM2K [quote]ORIGINAL: Sport_Pilot [quote]Fox engines tend to be highcompression as Mr Fox didn't like nitro in the fuel that much. [/quote] Then why did he make Missile Mist? He did raise compression on most of the sport engines, but lowered it on many competition engines. [/quote] I had a lengthy telephone discussion with Duke Fox over his preference for high nitro fuel
Posted on: 10/28/2009 8:37 AM by Author "Sport_Pilot" in the forum "Glow Engines"
http://www.rcuniverse.com/forum/fb.asp?m=9208750

RE: Golf ball dimples
[quote]Something that will not work on a golf ball. [/quote] Maybe if you point the tail to the rear, and it is made to fall off when it hits the ground?
Posted on: 10/28/2009 8:11 AM by Author "Sport_Pilot" in the forum "Aerodynamics"
http://www.rcuniverse.com/forum/fb.asp?m=9208704