RE: Factory settings for an OS 40 FP??
If you have an early version of the .40 FP, you will need to run a fuel with castor oil and run it very, very rich for the first 45-60 minutes. The early versions had the iron alloy piston running in a steel liner, and they'd take a while to break in. Once broken-in, though, they were super, super engines with ultra-reliable running habits. You can tell if you have one of those if they tend to quit as soon as you try to lean it during the first 10-15 minutes. They did not at all like to be run with fuels that had all-synthetic oil packages. Starting points are 2-1/2 turns out from closed on the high-speed needle, and the air-bleed screw set to block the air-bleed hole 1/2-way. You then adjust as necessary.
Posted on: 11/4/2009 3:14 PM by Author "Bax" in the forum "Beginners"
http://www.rcuniverse.com/forum/fb.asp?m=9228010

RE: OS46ax
As people are noting, different props give different amounts of performance. As a guide, the O.S. Max .46AX should be propped to turn in the mid-to-high-12,000's when leaned to just rich of peak RPM. If your prop will allow the engine to turn that RPM level [b]AND[/b] fly the airplane in the manner you like, you have chosen the "correct" propeller. It doesn't matter what brand or size is on the prop. The bottom line is how the airplane flies. Da Rock had it right....what works the best IS the best, and you'll find people with the same airplane/engine combo using different props because of the way they like to fly the model. However, it's good to remember that the engine likes to turn up at full throttle, so work from there.
Posted on: 11/4/2009 3:09 PM by Author "Bax" in the forum "Beginners"
http://www.rcuniverse.com/forum/fb.asp?m=9228000

RE: os 140 rx pump
With a pumped engine, a hopper tank isn't needed. If the engine is surging at full throttle, you may not have the high-speed needle leaned enough. If there is trash in the system, it can cause problems with the pump and regulator. You can remove fuel residue by passing methanol through the pump and carb, as detailed in the instructions. It will eventually dissolve old fuel residues.
Posted on: 11/4/2009 2:32 PM by Author "Bax" in the forum "O.S. Engines Support"
http://www.rcuniverse.com/forum/fb.asp?m=9227934

RE: A strange question coming from a motorized bicycle enthusiest
The model engines rev as high as they do because of the light weight. They're also bored, stroked, and ported for the RPM. However, you must not overlook the fact that glow engines use methanol-based fuels. Because of that, the carburetor must be adjusted EVERY TIME you use the engine. If the weather changes, the carb setting changes. Even during an absolutely-clear day, a cool morning and a warm afternoon will require you to reset the carb. It's just a fact of life when you are using alcohol-based fuels. Not really conducive to the person who just wants to start up and go...there is no "set and forget" with glow fueled engines.
Posted on: 11/4/2009 2:23 PM by Author "Bax" in the forum "Glow Engines"
http://www.rcuniverse.com/forum/fb.asp?m=9227917

RE: Life of Unopened/stored CA
Everything has a shelf-life. It won't keep forever. However, CA adhesives will keep longer if they are unopened and stored in a freezer. Just let them warm up for several hours before you open them. You want to make sure that no condensation is present on the bottle or the adhesive will harden. Moisture cures CA adhesives. That's why they cure once opened...moisture from the air gets into the bottles. Once they start to cure, they will continue to do so, but slowly. If the adhesive is getting darker or thicker, it's starting to cure. It should be OK to use where you don't need full strength, as long as you can flow it into the joint.
Posted on: 11/4/2009 9:59 AM by Author "Bax" in the forum "Questions and Answers"
http://www.rcuniverse.com/forum/fb.asp?m=9227405

RE: What brand of engine is this?
The "S" series had the big "S" on the side, as the pic above shows. If it was a .61-size engine, then it could be a SuperTigre S-61 if it has a round cylinder head, or an S-61K if it had the squared-off head. The same for other sizes. The current line of SuperTigre engines are "G"-series or "GS"-series. They, too were produced in Italy before the move to the Far East, and have continued to be produced. On the side of the engine opposite the exhaust port, you'll see a large letter "G".
Posted on: 11/4/2009 9:54 AM by Author "Bax" in the forum "Questions and Answers"
http://www.rcuniverse.com/forum/fb.asp?m=9227389

RE: OS46ax
12 x 5??? That seems a bit large to me. We use a 10.5 x 6 as the smallest prop. A 10 x 7 or 10 x 8 are goodies for trainers or other sport aircraft that aren't intended for 3D-type flying. If you prop the engine so that it turns 12,500 RPM or above when leaned to just rich of peak, you'll find the engine performs very, very well. However, it will be quite a bit noisier than if you run larger propellers.
Posted on: 11/3/2009 12:42 PM by Author "Bax" in the forum "Beginners"
http://www.rcuniverse.com/forum/fb.asp?m=9225181

RE: os .91 fs 4-stroke.
[quote]ORIGINAL: w8ye When I was young, the sound of the high voltage oscillator in the TV about killed my ears. Thankfully I no longer hear it. [/quote] Ahhh, the sounds of the "flyback".....now, I have a continual sound like that in my ears, but it's a result of the 18 weeks of chemo I had 10 yrs ago!
Posted on: 11/3/2009 12:38 PM by Author "Bax" in the forum "Beginners"
http://www.rcuniverse.com/forum/fb.asp?m=9225174

RE: OS 1.20 S III pumper
If you close the needle and the engine still runs, then the carb body and/or needle is bad. The needle seat is a common thing to have go bad. Check the needle. It may have a worn spot where it's been against the needle seat too many times.
Posted on: 11/3/2009 10:05 AM by Author "Bax" in the forum "O.S. Engines Support"
http://www.rcuniverse.com/forum/fb.asp?m=9224847

RE: Os 55 Ax dying
OK. Time to close this thread. It's getting too long, and turning into a discussion. If INDIVIDUALS have specific questions, please post them in their own thread. This forum is for people to ask us for help and get answers. IT IS NOT A DISCUSSION FORUM. Thank you. Again, if an engine (ANY engine) quits after a few minutes, it's either going lean or overheating from another reason. You'll need to check the entire fuel system and the cooling system. Many cowled engines just don't get cooling because the airflow goes from the air inlet to the air outlet without passing through the engine's cooling fins. You may need to make baffles to get the air to pass through the fins. Fuel systems are common locations for problems...air leaks, dirt in the system, bad connections, air agitated into the fuel by vibrations, and so forth. If you keep having dead sticks, then put the engine on a test stand and see what's going on. If it will run "all day" on a test stand, then there's nothing wrong with the engine, regardless of how it's performing in the airplane. The problem isn't the engine, but in the combination of the airframe/engine/mount/fuel system combination.
Posted on: 11/3/2009 10:04 AM by Author "Bax" in the forum "O.S. Engines Support"
http://www.rcuniverse.com/forum/fb.asp?m=9224845

RE: Old Flap Problem Revisited
We'd have no idea why your system exhibits that behavior. The mixes just have to have something 'funny' in the setup. You may certainly email the model file so that we can look at it and see what the difficulty may be.
Posted on: 11/3/2009 9:52 AM by Author "Bax" in the forum "Futaba Radios Direct support forum"
http://www.rcuniverse.com/forum/fb.asp?m=9224815

RE: 12Z mixing qustion
You just set up the mixers so that their on/off switch is the throttle stick, and the mixer is "off" when the throttle is above 1/2-stick.
Posted on: 11/3/2009 9:51 AM by Author "Bax" in the forum "Futaba Radios Direct support forum"
http://www.rcuniverse.com/forum/fb.asp?m=9224812

RE: 12Z Range Check Power
90 yards is GOOD! That's 270 feet. Normally, you'd expect to see 100 feet in range-check mode, which is quite good. Futaba says 30-50 "paces" in the instructions for the TM-14 module. 90 yards exceeds that, so you have nothing to worry about.
Posted on: 11/3/2009 9:49 AM by Author "Bax" in the forum "Futaba Radios Direct support forum"
http://www.rcuniverse.com/forum/fb.asp?m=9224808

RE: 50CC Cessna with retracts?
Both the Cessna 172RG Cutlass and 177RG Cardinal had versions with retractable landing gear. http://en.wikipedia.org/wiki/Cessna_172 http://en.wikipedia.org/wiki/Cessna_177
Posted on: 11/2/2009 3:04 PM by Author "Bax" in the forum "RC Scale Aircraft"
http://www.rcuniverse.com/forum/fb.asp?m=9222883

RE: SuperTigre 3000 parts
The cylinder liner has been discontinued, and we no longer have a piston ring listed for the S-3000 engine. It was replaced by the G-3250 in 1995, 14 years ago. Parts have been discontinued as stocks have run out.
Posted on: 11/2/2009 10:25 AM by Author "Bax" in the forum "SuperTigre Engines Support"
http://www.rcuniverse.com/forum/fb.asp?m=9222272

RE: OS 110FSa exhaust silencer keeps coming loose
Basically, you'll need to restrain the muffler body. Just having it held onto the engine at the case isn't enough. The engine will vibrate around, and it will cause the muffler to move around. This will loosen the jam nut. Add a hold-down at the muffler body, and you'll be fine.
Posted on: 11/2/2009 10:21 AM by Author "Bax" in the forum "O.S. Engines Support"
http://www.rcuniverse.com/forum/fb.asp?m=9222261

RE: older O.S. .40 question
If you find a .40-size carb that fits into the engine, likely it will work just fine, no matter what brand.
Posted on: 11/2/2009 10:20 AM by Author "Bax" in the forum "O.S. Engines Support"
http://www.rcuniverse.com/forum/fb.asp?m=9222257

RE: Holey Cow! Tower is now carrying DLEs!
[quote]ORIGINAL: Mitsu1 I don't trust anyone that seemingly would spend that kind of money on an excellent array of ARFs and kits, then kill it!!!!, ... just to get the competition out of the way. (Yes, I know they distributed Lanier, but Great Planes is their plane line.) [/quote] It's interesting how many people have this erroneous idea. If we bought the line, it is no longer "competition". Flat out, no matter how well a few people liked one or the other kits, they just were not selling...not before the purchase, not after. We're not concerned whether a kit has one label or another if it's selling...we just don't care about that! If it's not selling, then it's dropped, plain and simple. Unfortunately, too many people seem to think that there's some grand idea to "eliminate" competitors. We don't acquire brands to eliminate products, but to get products we can use. The ones that are not marketable have to be dropped...it really is as simple as that.
Posted on: 11/2/2009 10:15 AM by Author "Bax" in the forum "Gas Engines"
http://www.rcuniverse.com/forum/fb.asp?m=9214823

RE: Looking for a Goldberg Jr. Tiger manual...
Contact: partssupport@greatplanes.com They can shoot you a price for a new manual, or send an electronic copy for free (if that one's been scanned-in).
Posted on: 10/30/2009 11:24 AM by Author "Bax" in the forum "Kit Building"
http://www.rcuniverse.com/forum/fb.asp?m=9214932

RE: can you compensate for weight?
It's interesting how so many think a snap with the application of elevator can be counteracted by adding weight to a wingtip. A snap is an aerodynamic happening and not one due to weight. Adding weight to one wingtip only helps if the other wing is heavier before the addition of weight. The common, in-flight way to determine a heavier wing is to do a nice inside loop and watch which way the plane rolls. Then do an outside loop. If the plane rolls right in the inside loop and then rolls left in the outside loop, the right wing is heavier. Weight will help you there. If you have an airplane that snaps very easily upon the application of elevator, then you have a "snappy" airplane or one that's too heavy. To reduce snapping, you can make the wing thicker with a more-blunt leading edge...especially if you can change the airfoil towards the tip to have a thicker section. Unfortunately, that's not easily done...you have to build a new wing. The idea of a turbulator strip may help, but it would also reduce the aerobatic capabilities of the model. We once had a kit of an Extra that had a very specific limitation on the elevator travel. That was good for all flying, and exceeding it made the airplane very prone to snapping....there ARE limits to everything, and going beyond them can cause difficulties.
Posted on: 10/30/2009 11:16 AM by Author "Bax" in the forum "Aerodynamics"
http://www.rcuniverse.com/forum/fb.asp?m=9214904

RE: older O.S. .40 question
We'd have no idea if any current parts will fit the older engine. Likely, no. However, if you measure the carburetor mounting boss' inside diameter, it will accept the LA venturi if it has a 10mm inside diameter.
Posted on: 10/30/2009 10:23 AM by Author "Bax" in the forum "O.S. Engines Support"
http://www.rcuniverse.com/forum/fb.asp?m=9214812

RE: What do you think about Fuji Engines???
The main problem we've found when people have difficulties with the Fuji-Imvac engines is a clogged carburetor screen and badly-adjusted needles. They use the same Walbro carburetor other engines use, so it's not carburetion that causes a difficulty. If an engine quits in mid-flight, it either has a fuel delivery problem or a cooling problem. If it will run "all day" on the ground, then nothing's wrong with the engine. However, that's not to say that any one engine may have a difficulty the user cannot control. As the service center, we're perfectly happy to have anyone send us their engine to see what the difficulties may be.
Posted on: 10/30/2009 10:13 AM by Author "Bax" in the forum "Gas Engines"
http://www.rcuniverse.com/forum/fb.asp?m=9214789

RE: 6014HS Question
If you have the Futaba 12FG, 12Z, or 14MZ transmitters, when you set up the model, you can tell the transmitter which channels are using which functions. However, please realize that the high-speed mode really doesn't give much of any advantage for airplanes. It really only helps 3D-type heli flyers. Airplane flyers of the highest competition levels haven't noticed any change in performance when they've tried high-speed mode. If you don't have one of those transmitters, then you won't be able to re-configure your installation to take advantage of the first six channels in high-speed mode.
Posted on: 10/30/2009 9:55 AM by Author "Bax" in the forum "Futaba Radios Direct support forum"
http://www.rcuniverse.com/forum/fb.asp?m=9214755

RE: Is the 9ZAP WC2 transmitter ratcheting tention adjustable?
The ratcheting really can't be made much stronger or weaker. That would take larger 'teeth' in the ratchet. The ratcheting can be removed by changing from the ratchet spring to one that simply rides on the gymbal, making a smooth throttle. That spring can be tensioned somewhat to increase resistance. Some have taken the existing spring and just turned it over. This reduces the ratcheting quite a bit. However, it does take considerable disassembly of the circuit boards and ribbon cables to get to the sticks. The service center can do a conversion for a nominal fee and guarantee proper operation after the work's done.
Posted on: 10/28/2009 2:15 PM by Author "Bax" in the forum "Futaba Radios Direct support forum"
http://www.rcuniverse.com/forum/fb.asp?m=9209504

RE: 8FG Question
"Alternate" toggles the function/mix. It works best with the spring-loaded switch. Pull it and the function is on, pull it again and the function toggles off.
Posted on: 10/28/2009 2:12 PM by Author "Bax" in the forum "Futaba Radios Direct support forum"
http://www.rcuniverse.com/forum/fb.asp?m=9209496

RE: futaba t7c stick length
We're sorry to say that there isn't any way to shorten the sticks if they are already adjusted to be as short as possible. They cannot be removed and replaced to be shorter. Such action would damage the stick assemby.
Posted on: 10/28/2009 1:53 PM by Author "Bax" in the forum "RC Radios, Transmitters, Receivers, Servos, gyros"
http://www.rcuniverse.com/forum/fb.asp?m=9208936

RE: TOP 10 TOOLS Every guy/gal should own :D
1 pair of Vise Grips(R), a cold chisel, and a 5-pound ball-peen hammer. With those 3 items, you can take ANYTHING apart! (heh,heh)
Posted on: 10/28/2009 11:44 AM by Author "Bax" in the forum "Off Topic Forum - Cars, Trucks, Buggies and more"
http://www.rcuniverse.com/forum/fb.asp?m=9209135

RE: OS 28XZ tech question
We cannot comment about them. We've only used the stock bearings as supplied by O.S. With good lubrication and corrosion prevention, they will last many years of normal operation.
Posted on: 10/28/2009 11:00 AM by Author "Bax" in the forum "O.S. Engines Support"
http://www.rcuniverse.com/forum/fb.asp?m=9209035

RE: os fs 91 II with pump broken header ?
You may need to add an additional anchor point for the muffler. That heavy weight at the end of the tube can flex enough to allow the metal to break from fatique. This would be especially true if the airframe is fairly light and the structure allows the engine to move around. Many modern airframes are very light, and do not absorb engine vibrations like older models' airframes did.
Posted on: 10/28/2009 10:57 AM by Author "Bax" in the forum "Glow Engines"
http://www.rcuniverse.com/forum/fb.asp?m=9209024

RE: New OS 25AX
Tower has some pictures wrong. The needle slants back on the #21L carb that comes with the O.S. Max .25 AX.
Posted on: 10/28/2009 10:53 AM by Author "Bax" in the forum "Glow Engines"
http://www.rcuniverse.com/forum/fb.asp?m=9209019