RE: Greater Southwest 2012 Waco Texas
[quote]ORIGINAL: sidgates I am guessing the third picture is Sam Snyder. Can you supply any details on the three models pictured? [/quote] On post 162 all three models are Sam’s. The first is RQ-16A which is P60 powered, Sam has been flying this one for a number of years. The second photo... details on all of these at Sam’s web site UAVDE.COM Steven
Posted on: 9/10/2012 11:00 AM by Author "S_Ellzey" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=11223888

RE: BVM F-100
[quote]ORIGINAL: David Searles Greg, Nice! But I think that those aft sections might be part of the reason why these two are sitting where they are![:D] David S [/quote] Hi David, Back when I researched my Hun I came to some conclusions as to the extent of the discoloration on the hot section... can be removed with severe cleaning, it’s just the oxidation layer, that gets thicker the hotter
Posted on: 8/30/2012 6:14 AM by Author "S_Ellzey" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=11211383

RE: Jetcat throttle curve setting
[quote]ORIGINAL: furloughed ual With that being said, if you make it more linear, you need to be easier on the throttle stick or slow the acceleration a bit as you are in effect asking for a faster spoolup. More thrust for a lower throttle setting is gonna have to make the turbine spin a faster RPM at a lower throttle stick position. Make sense? [/quote] Actually that does not make sense. The ECU should always limit the acceleration to what is achievable. Regardless of what you ask it to do, the time from say 10% to 25% should be the same. The only difference here should be where the stick is to finially get to 25%, otherwise if I slam the throttle open from idle the engine would die regardless of the throttle curve in use.
Posted on: 8/27/2012 5:49 AM by Author "S_Ellzey" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=11207396

RE: Twin Turbine Jets, loosing 1 turbine
Lost one of the two engines on Sam Snyder's Avro Vulcan once. Even turning into the dead engine I did not have any trouble making a good landing. That was a ~60 pound model on two P120s that are space some what further apart than most.
Posted on: 8/20/2012 10:23 AM by Author "S_Ellzey" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=11199752

RE: Dual valve as a single?
[quote]ORIGINAL: Stobe777 Hi, Stupid question, but can I use a dual valve just as a single for spring air stuff? Tx Tuomas [/quote] Yes. If the valve has dual outputs on both ends, just connect the outputs together on one end and run the other end to your gear. If there is only one output per end you have to plug the output on one end and use the other. Steven
Posted on: 8/16/2012 10:37 AM by Author "S_Ellzey" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=11195857

RE: oops
I think you can get it at either The Home Depot or Victoria's Secret
Posted on: 8/10/2012 5:32 AM by Author "S_Ellzey" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=11187979

RE: Bad boy Lipo charger poll
My Chevy Volt is packed with Lipos, so I always charge in the car, in the garage, over night. For those of you who don't know what a Volt is, it is an electric car.
Posted on: 6/29/2012 5:34 AM by Author "S_Ellzey" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=11136259

RE: spektrum vs JR
DSMX is still Direct Sequence Modulation, but unlike DSM2, which finds 2 frequencies and sets on them, it shifts frequency also. So DSMX is spreading the spectrum in two ways.
Posted on: 6/14/2012 6:01 AM by Author "S_Ellzey" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=11117821

RE: How to match paint please?
Most automotive paint stores can match the paint if you take them a sample. If you have a Finish Masters near by they can mix your color in several different types of paint. I would suggest that you take in a wing panel so that they have a reasonable area to scan. I went in once with a small sample and it made it kind of hard for them.
Posted on: 6/12/2012 5:47 AM by Author "S_Ellzey" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=11115381

RE: Spekrum Airspeed Telemetry
Your idea of closing the statics is a good one. Right before takeoff wrap a piece of tape around the probes statics ports. The only issues might be if the temp in the model changes much in flight, if the inside warms up the static would increase which would give you a false low reading. I don't remember if the spektrum system will display a negative speed. If you landed and had something other than zero displayed when you stopped you would know it did not work.
Posted on: 6/6/2012 11:06 AM by Author "S_Ellzey" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=11108844

RE: Spekrum Airspeed Telemetry
If you are concerned that the electronics are not calibrated correctly you can check that easily. You can construct a very simple water monometer from some fuel line (diameter does not matter). If you are not sure what a water monometer is, just Google it, there are good pictures of them. “T� in a syringe between the sensor and the water to pressurize the line with. Just attach the line to the tip of the pitot probe. At 80 mph you should have an 80 mm water column height (80 and 80 is just a coincidence) and at 180 mph you should have a 404 mm water column height. If this checks well the electronics are doing things right.
Posted on: 6/6/2012 7:37 AM by Author "S_Ellzey" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=11108581

RE: Spekrum Airspeed Telemetry
The photo below is of my installation. Other than the nose I think this is about as good as it is going to get. I would be concerned that the probe on your model is in some cross flow, which will effect both the static and the dynamic pressure. At the spped we fly at (subsonic) the air sees the plane coming from a long ways off and starts to move out of the way fairly far from the body. To get a good reading you have to be in a area where the flow is parrallel to the probe and the velocity is still the same as it is at a great distance out. Normally we spend a lot of time in the wind tunnel figuring that out, but for a model you have to guess your best.
Posted on: 6/5/2012 7:45 PM by Author "S_Ellzey" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=11108105

RE: Spekrum Airspeed Telemetry
I have the system in my KingCat also, and it works very well. I have mine installed in the nose of the boom so that I can get it away from the airframe as much as possible. My RAM 1000 gets it up to ~190 mph straight and level. Your location may be too close to the body/wing to get a good reading. I have a calibrated pressure gauge that I used to check the units accuracy on the ground and the display was always within 2 mph of what it should be, so that part of it is working pretty good. My Wifes BobCat has the same setup and it works very well also. Also have one in the Habu 32 to watch the battery voltage, which is very neat. I think that the system works well, its just that the airspeed system in a jet is going is going to have to be installed well clear of everything. Steven
Posted on: 6/4/2012 5:50 AM by Author "S_Ellzey" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=11105655

RE: Elevator & Rudder extensions ???
Aluminum tape over ceramic blanket. The aluminum tape, if left natural finish, reflects radiant heat and the blanket provides some protection against conductive heating.
Posted on: 5/22/2012 5:52 AM by Author "S_Ellzey" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=11090164

RE: Powerbox iGyro
[quote]ORIGINAL: mr_matt Exactly, if the satellite geometry is bad (all 4 satellites are in a 20 degree cone in the sky) all of the calculations are degraded, X and Y axis included. If they are distributed well in the sky, then verticle might not be so bad. The point is, with decent satellite geometry teh Z solution might be ''good enough'' for what they are doing. Need the pudding at this point. [/quote] When determining you Latitude and Longitude you most likely have satellites on all sides of your position, when determining altitude they can only be on one side of your position, tougher problem. A good filter should be able to coast through this issue. A bad filter will tell you that you broke the speed of sound, been there, seen that, setting still on a bench. Looks like a very neat unit.
Posted on: 5/9/2012 11:02 AM by Author "S_Ellzey" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=11074532

RE: Gyro on taileron/elevon/delta?
[quote]ORIGINAL: HarryC [quote]ORIGINAL: ravill I can see your point. That said, MANY people are doing just what I am planning with two gyros aligned at 45 degrees. [/quote] Yes with [u]two[/u] gyros aligned at right angles to each other, for example one aligned 45 degrees inwards and the other 45 degrees outwards. But you can't do it with one gyro which rules out using one dual input/output gyro like the ACT Fuzzy Pro. You could use two Fuzzy Pros and just use one input/output of each but that gets a very expensive way of doing it. There is still a potential disadvantage to using a gyro aligned at 45 degrees to the two axes you want to involve. There is only one gain setting so it will respond with the same amount of control travel to pitch and roll. Depending on the model, this may be very unequal. For example, on my Typhoon elevons, the elevator travel is large and the aileron travel is small. Therefore the roll gain is very low. If I aligned the gyro at 45 degrees then the gain would have to be a bit higher but the end result is the same, a small amount of control deflection. It would respond the same way to pitch disturbance, a very small deflection of elevator which would have no useful effect since the elevators need a lot of travel. Turning the gain up to an amount useful to elevators would be several times too high for the ailerons and a severe rolling wobble sets in as soon as the gain exceeds a critical point. So the only option is to set the gain for roll, which would be too low to be of any use in pitch, thus negating all the bother of setting it up that way. It will depend on the travels for your particular model. By far the best option would be two gyros but one on each separate axis so you can set different roll and pitch gains. That would require them to be fitted in series in order to drive elevons, don't know if that would cause any problems. H [/quote] In this instance you could increase the mounting angle, say to 110 degrees, which would increase the visability of the roll rate at the gyro while decreasing the pitch. It would take some expermenting, but could be done. For what its worth - the gyros in an Inertial Measurement Unit (IMU) are at 45 degrees to the major axis'. Of course there are 3 gyros and a computer to come up with the final answer. An IMU is the device in a missile, airplane, or sub that tells it how it is moving. Steven
Posted on: 2/22/2012 5:51 AM by Author "S_Ellzey" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=10970435

RE: Rocket Plane?
them available, I'm sure a few people will buy them, but it's not very viable in the mainstream...... why not look into H2O2 power? It doesn't need a traditional igniter, and it's a single
Posted on: 2/16/2012 5:40 AM by Author "S_Ellzey" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=10961391

RE: cutting holes in Kevlar fuse's
Break the tip off of a #11 exacto blade. Use the corner opposite the cutting edge and scrape your way through. You will be supprised how fast you go through, and it leaves a neat edge.
Posted on: 1/17/2012 10:18 AM by Author "S_Ellzey" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=10913590

RE: Air France 447
The following are the comments from a 777 pilot after getting his rating on the A320 on the side stick controllers: "[i]A visitor once asked me (was it you?) what happened if the captain moves the side stick to the left and the copilot moves it to the right? My answers were not very clear then, as I was not rated on the A320 yet. Well, since the side sticks are only "wired", they are not mechanically interconnected like the old conventional planes. The right side cannot feel the movement from the left stick. What happens is that, when there are opposite deflections, their inputs are algebraically added (total sum) with the maximum limit corresponding to the movement of one side stick. If the captain pulls full left, and his copilot pulls full right, the net effect is zero. So, the last pilot to click on an override push-button on the side stick obtains control (an indicator light in front of the other pilot signals this fact). The potential exists for the pilots to *fight* over the control of the side sticks. Rather than the "strongest" pilot winning, the one with the fastest thumb will win![/i] "
Posted on: 1/12/2012 10:33 AM by Author "S_Ellzey" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=10905167

RE: What is the function of crow?
Opinion of an Aerospace Engineer and long time KingCat owner/pilot. For a given angle of attack, raising the ailerons will decrease the wings lift and increase its drag. Any time you turn the air it takes energy and that is drag. So if you fly the same angle of attack with crow as with out you have a higher sink rate and more drag that you can compensate with either more power or a steeper descent. For most of us this makes it a bit easier to pick your landing spot. Raising the ailerons also increases the effective washout on the wing with makes the model more tip stall resilient, which decreases the possibility of a departure. Raising the ailerons reduces the maximum lift the wing can generate, that is just the effect of negative camber. Since the wing is making less lift the stall speed is increased and the approach speed should be higher also. This allows the control surfaces (all of them) to generate more control authority to deal with upsets due to gusts or pilot mistakes. The KingCat can land so slow that it can get into trouble in gusty conditions, crow helps this a lot; many other models are the same. However crow really only helps out on lightly loaded models, which is why it is of no use on full-scale aircraft. The manufactures of airliners are trying to improve the L/D in landing configuration so they can use less power and make less noise on approach. On a clean, lightly loaded model we would like a lower L/D so it does not float as much. You can decrease the flaps and get some of the benefits, but that also decreases the drag, so you shallow out the approach and find it harder to pick your spot, and you decrease the effective washout which increases the chance of a tip stall. Steven
Posted on: 8/18/2011 7:29 PM by Author "S_Ellzey" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=10676866

RE: Greater Southwest Jet Rally-Waco TX
[quote]ORIGINAL: DavidR [quote]ORIGINAL: Dawn Ellzey Actually I said if anyone could ride Frank (he's only 2000+ pounds and a little over 6 foot tall) I would buy dinner. And the Ambulance, Medical Helicopter, Hospital, and Funeral cost are not part of the deal! Now as for Buffalo burgers the calves are not old enough to make much of a meal but they will be in 2 years. [/quote]'ll ride
Posted on: 8/2/2011 6:42 PM by Author "S_Ellzey" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=10652277

RE: HELP! Using Pro-Mark Paint Masks for the BVM F100!
I used Pro-mark stencils for all the markings and the tail stars on my Hun. I did put mine over metal kote so I think you need to start a little bit differently. I would clean with something like PPG acryla-clean (I think that is what it is called). Put on you’re over all mask and shoot a very thin coat of primer, a little extra hardener helps it flow out. Then spray your paint, build up a reasonable coat, and let it dry completely. After a color is completely dry us a small sanding block and sand the template so as to work the ridge in the paint that forms at the edge. Once you have all the colors down apply a medium coat of clear, let it dry completely, and block sand it smooth, this will remove what is left of the ridges in the middle of the insignia. The clear will also protect the tips of the stars when you sand, small points can chip off when sanded. Finally add a light coat of clear and polish it. That is how I do the Star-n-Bar, the rest of them are easier. Obviously I did it with a spray gun, but you should be able to adapt this to a spray can. As to the colors, they are insignia red, insignia white, and insignia blue. In PPG DCC Red DCC72745altB SC a Toyota color White DCC91211DI Crystal White Blue DCC18622 at GM color These where arrived at by taking color samples to a PPG store and having them use the computer color matcher. Good luck with it.
Posted on: 7/8/2011 11:54 AM by Author "S_Ellzey" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=10612027

RE: County Burn Bans and AMA regs
[quote]ORIGINAL: AndyAndrews Is there any AMA regulation that states we can't fly during burn bans? Or does this fall under the ''police ourselves'' common sense area? right now almost every county in AR has a burn ban. Its been that way for 6 weeks straight now. The weather couldn't be any better for flying. I guess I'll dust off a prop. [/quote] Several years back I was at an AMA safety committee meeting where this was briefly talked about. The AMA had no real interest in trying to link the safety code to county codes, and after a brief bit of research they realized that the terms used are not consistent across the country nor the requirements to comply with the county declaration. So the AMA relies on our common sense in this area. Steven
Posted on: 5/23/2011 10:10 AM by Author "S_Ellzey" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=10536147

RE: Mississippi Afterburner 2011
Joe Ellis of the Clairon Ledger spent several hours at the event on Thursday. go to [link]http://www.clarionledger.com/apps/pbcs.dll/gallery?Avis=D0&Dato=20110428&Kategori=NEWS&Lopenr=104280809&Ref=PH[/link] for his photos.
Posted on: 5/1/2011 4:22 PM by Author "S_Ellzey" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=10495327

RE: What size packs do you run?
[quote]ORIGINAL: sskianpour 2 X Good ol' fashioned NoBS 2400 mah NiCads. They can handle the cold, and none of this fancy A123 tech with fancy balancing leads, new chargers, etc, etc, that makes my brain hurt....yeah, I know, I am acting old and crotchety... [:D] Shaz [/quote] Ditto, except I use SR NiCads.
Posted on: 3/25/2011 5:44 AM by Author "S_Ellzey" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=10421488

RE: BVM F-100F help
That is the Skyblazer scheme, a USAF european demo team. I am not sure they ever flew the F-100F. When the Thunderbirds went to the F-100D and could reach Europe with inflight refueling the Skyblazers where phased out. You might be able to search for Skyblazer aerobatic team and find some info. Steven
Posted on: 3/24/2011 5:52 AM by Author "S_Ellzey" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=10419464

RE: BVM F-100 Bypass
There is lots of room in the fuse as is. And since the duct you are talking about is removable you can use the space under it. You can place a very large air tank farm in the area just aft of the engine (I have 5 tanks back there in mine). Fuel tanks fit nicely where shown on the plans. I have quite a bit of extra space in mine. Built by the plans it is one of the best flying models out there, I would not change the ducting. Steven
Posted on: 3/15/2011 10:17 AM by Author "S_Ellzey" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=10401554

RE: Flap problem........
Choose the flap that looks right and then adjust the other. Set the flap to the midpoint, watch the led on the matchbox and it will tell you when you are there. Now adjust the other flap with the matchbox to match the throw on the other side. Go to full down and adjust it to match full throw, then repeat for full up. it is important to match the mid point first. Make sure to set the matchbox dial back to "0" before you power off. That should do it. Steven
Posted on: 3/2/2011 6:17 PM by Author "S_Ellzey" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=10375462

RE: F-100 Super Sabre Paint question
I went through this when I finished my Hun. While this may not be absolutely correct all the time, what I kind of came up with was this. Most all D and F models had mostly painted wings (see attached photo). In my case the 1968 Thunderbird scheme still had natural metal fuse. When they prepped them for the 69 season part of the fuse was painted (see attached photo), but they only flew this in practice before adopting the F-4. By 1970 I would think anything that looks silver is paint. If it looks very uniform but not polished like a Thunderbird it is probably paint.
Posted on: 2/23/2011 10:26 AM by Author "S_Ellzey" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=10357859

RE: Federal Standard Paint Codes
These are DCC part numbers, but your PPG paint store should have no trouble making them in DBC. Insignia Blue - DCC18622 it is a GM color Insignia Red - DCC72745 ALT B SC which is a Toyota color Insignia White - DCC91211DI which is called Crystal White Hope this helps. Steven
Posted on: 11/23/2010 11:03 PM by Author "S_Ellzey" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=10155694