Yellow Aircraft F-22 ARF Assembly Thread
02-04-2011, 09:14 AM
#77
Thread Starter
RE: Yellow Aircraft F-22 ARF Assembly Thread
Hi,
Got some more work done last night. I think I've reached the crest of the hill with this assembly, so it's all downhill from here. I did do a couple of reinforcements that are probably not crucial, but might be helpful in the event of a hard landing. The fuel tank compartment is pretty big, and if the pilot ever had a hard landing with full tanks, those tanks might cause some cracking in the fuse down there. It's happened before, so I reinforced the area with one layer of 6-oz boat cloth and West System resin. The cloth ties in to the two sub formers that are mated to the engine bearers, so it's a little extra rigidity with less than a couple ounces of weight. Same for the nose gear mount.
I got the trays prettied up a little, too.
Got some more work done last night. I think I've reached the crest of the hill with this assembly, so it's all downhill from here. I did do a couple of reinforcements that are probably not crucial, but might be helpful in the event of a hard landing. The fuel tank compartment is pretty big, and if the pilot ever had a hard landing with full tanks, those tanks might cause some cracking in the fuse down there. It's happened before, so I reinforced the area with one layer of 6-oz boat cloth and West System resin. The cloth ties in to the two sub formers that are mated to the engine bearers, so it's a little extra rigidity with less than a couple ounces of weight. Same for the nose gear mount.
I got the trays prettied up a little, too.
02-04-2011, 10:18 AM
#78
Thread Starter
RE: Yellow Aircraft F-22 ARF Assembly Thread
Hi,
Someone PM'd me and asked why I was using such big servos on the valves. The answer is that on a couple of past occasions, I've had the valve plunger stick. Usually, it's due to weather/temperature fluctuations. It's the only jeer I've ever had for the valves. On a micro servo like the JR or the HS-81, I've had them strip when the servo couldn't defeat the stuck plunger. The 225 has enough power to knock the valve off of tray.
Someone PM'd me and asked why I was using such big servos on the valves. The answer is that on a couple of past occasions, I've had the valve plunger stick. Usually, it's due to weather/temperature fluctuations. It's the only jeer I've ever had for the valves. On a micro servo like the JR or the HS-81, I've had them strip when the servo couldn't defeat the stuck plunger. The 225 has enough power to knock the valve off of tray.
02-04-2011, 09:21 PM
#79
Thread Starter
RE: Yellow Aircraft F-22 ARF Assembly Thread
Hi,
Got the gear and doors all plumbed and working. I usually wait until I'm done with plumbing all of the other systems that involve plumbing before I terminate the air lines at the valves, so I just 'tacked' them on for the test. I have a hand-pump in the shop, so I pumped up the tank to a very low 20 psi to see how many cycles I could get out of that. I have had some jets that couldn't get a full cycle with less than 60 psi...let alone two. These are very smooth gear with smooth, powerful cylinders.
[youtube]http://www.youtube.com/watch?v=mA3uqvcfyCE[/youtube]
Got the gear and doors all plumbed and working. I usually wait until I'm done with plumbing all of the other systems that involve plumbing before I terminate the air lines at the valves, so I just 'tacked' them on for the test. I have a hand-pump in the shop, so I pumped up the tank to a very low 20 psi to see how many cycles I could get out of that. I have had some jets that couldn't get a full cycle with less than 60 psi...let alone two. These are very smooth gear with smooth, powerful cylinders.
[youtube]http://www.youtube.com/watch?v=mA3uqvcfyCE[/youtube]
02-05-2011, 10:49 AM
#82
RE: Yellow Aircraft F-22 ARF Assembly Thread
Shaun,I very much need of the VT nozzle, it is so funny，Connecting gyro can achieve the dream of flight by wire.
I will smoke the next flight,Should be cool.
I will smoke the next flight,Should be cool.
02-05-2011, 09:12 PM
#84
Thread Starter
RE: Yellow Aircraft F-22 ARF Assembly Thread
Hi,
All of the servos in the aft of the plane are in and plumbed. I've got to plumb the servos in the front yet (valves, steering, etc.). I put the pipe in place to see how close it'll get to the air lines and servo leads, and it'll get pretty close. One wet start and those pieces could be in jeopardy, so I'm going to insulate them with some aluminum foil (the best and least expensive heat insulation a model plane could ever have) and foil tape. In fact, the entire aft section will have a foil insulation blanket installed so that whether at full throttle or idle, the fuse will always be only as hot as the sun makes it. I checked the fit of the pipe to the nozzles, and it's dead-on. When you deflect the nozzles, the pipe and the nozzles mate up perfectly.
She's starting to look cool! I love that anhedral. That's what sets the look off...
All of the servos in the aft of the plane are in and plumbed. I've got to plumb the servos in the front yet (valves, steering, etc.). I put the pipe in place to see how close it'll get to the air lines and servo leads, and it'll get pretty close. One wet start and those pieces could be in jeopardy, so I'm going to insulate them with some aluminum foil (the best and least expensive heat insulation a model plane could ever have) and foil tape. In fact, the entire aft section will have a foil insulation blanket installed so that whether at full throttle or idle, the fuse will always be only as hot as the sun makes it. I checked the fit of the pipe to the nozzles, and it's dead-on. When you deflect the nozzles, the pipe and the nozzles mate up perfectly.
She's starting to look cool! I love that anhedral. That's what sets the look off...
02-06-2011, 08:16 AM
#87
My Feedback: (15)
RE: Yellow Aircraft F-22 ARF Assembly Thread
Looks great Shaun.
I love this plane, it flies very well. The gear has been flawless now going into the 4th season with the plane. Just needed to change the tires!
There is so much room for fuel it can feel little heavy taking off, I fly with a Titan SE and have to fly well over 11 minutes to get into the bottom 25% of the main tanks! I fill a little lower on hot days and still fly 8 minutes with no concerns.
I am not sure where you are putting your vent but I put it off the side so the bottom is smooth - mkaes it easy to situate on foam etc. Thi splane has also required barely any upkeep, another major plus!
Dave
I love this plane, it flies very well. The gear has been flawless now going into the 4th season with the plane. Just needed to change the tires!
There is so much room for fuel it can feel little heavy taking off, I fly with a Titan SE and have to fly well over 11 minutes to get into the bottom 25% of the main tanks! I fill a little lower on hot days and still fly 8 minutes with no concerns.
I am not sure where you are putting your vent but I put it off the side so the bottom is smooth - mkaes it easy to situate on foam etc. Thi splane has also required barely any upkeep, another major plus!
Dave
02-06-2011, 09:08 AM
#88
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RE: Yellow Aircraft F-22 ARF Assembly Thread
dave,that is good to hear this raptor will have a kingtech K-170 in it whitch has about 5# more thrust.i am hoping it will have good vertical performance.does it land good ? my field has a 400' runway .
ron
ron
02-06-2011, 10:06 AM
#89
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RE: Yellow Aircraft F-22 ARF Assembly Thread
Looking pretty SWEET there Ronny.....I'm now waiting for my free F15 as part of my licensing agreement for the video Shaun put on the website that I shot.....LOLOOLLLOLOL 
02-06-2011, 12:35 PM
#91
My Feedback: (134)
RE: Yellow Aircraft F-22 ARF Assembly Thread
I wouldn't worry to much about landing in the 400 foot runway. I mean I recently saw a guy land a big block FEJ-AT3 in something like 4-5 feet flying on the same strip. He used a special landing approach that I wouldn't recommend but he did prove that long runways are not required to get a jet "down".
02-07-2011, 08:26 PM
#92
Thread Starter
RE: Yellow Aircraft F-22 ARF Assembly Thread
ORIGINAL: sailing1
I wouldn't worry to much about landing in the 400 foot runway. I mean I recently saw a guy land a big block FEJ-AT3 in something like 4-5 feet flying on the same strip. He used a special landing approach that I wouldn't recommend but he did prove that long runways are not required to get a jet ''down''.
I wouldn't worry to much about landing in the 400 foot runway. I mean I recently saw a guy land a big block FEJ-AT3 in something like 4-5 feet flying on the same strip. He used a special landing approach that I wouldn't recommend but he did prove that long runways are not required to get a jet ''down''.
LOL
02-08-2011, 05:44 AM
#94
My Feedback: (15)
RE: Yellow Aircraft F-22 ARF Assembly Thread
Ron,
I have never flown this off a 400' runway but I am sure I have TO/landed within 400 feet on a longer runway!
Lanidng and breaking is not too bad and you can drive around nose high with power for approach. The TO with full fuel I have never forced but would say that if you start with brakes and advance throttle that you probably rotate by 250 feet.
The brakes and tires really provide nice ground handling.
Just for fun this is an old video - my maiden http://www.uffdarc.com/vid/2008/rush2.wmv
Dave
I have never flown this off a 400' runway but I am sure I have TO/landed within 400 feet on a longer runway!
Lanidng and breaking is not too bad and you can drive around nose high with power for approach. The TO with full fuel I have never forced but would say that if you start with brakes and advance throttle that you probably rotate by 250 feet.
The brakes and tires really provide nice ground handling.
Just for fun this is an old video - my maiden http://www.uffdarc.com/vid/2008/rush2.wmv
Dave
02-08-2011, 08:09 AM
#95
Thread Starter
RE: Yellow Aircraft F-22 ARF Assembly Thread
Hi,
Nice video! What's that thing sticking out of the top of your transmitter?? Looks like a clothesline...
I think you got off in far less than 400', btw. That looked great for a maiden. What was the engine?
Nice video! What's that thing sticking out of the top of your transmitter?? Looks like a clothesline...
I think you got off in far less than 400', btw. That looked great for a maiden. What was the engine?
02-08-2011, 05:23 PM
#97
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RE: Yellow Aircraft F-22 ARF Assembly Thread
Hi Shaun,
Well that was 2008 with my 10x and weatronic receiver....12x/1221 in there now...
That flight was a Titan SE with full fuel and a little forward CG.
Since then I basically shifted CG a bit aft and added more elev up trim with flap, that is about all it needed.
Dave
Well that was 2008 with my 10x and weatronic receiver....12x/1221 in there now...
That flight was a Titan SE with full fuel and a little forward CG.
Since then I basically shifted CG a bit aft and added more elev up trim with flap, that is about all it needed.
Dave
02-09-2011, 05:05 AM
#99
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RE: Yellow Aircraft F-22 ARF Assembly Thread
OH Yes!
Although maybe only 20 flights on it last year.....spent more time working on A10....
This plane is particularly fun in vertical maneuvers, it flies through them nicely and it also can make slow flight fun with nose up/higher power settings once the fuel is burned a bit.
Have fun with yours!
Although maybe only 20 flights on it last year.....spent more time working on A10....
This plane is particularly fun in vertical maneuvers, it flies through them nicely and it also can make slow flight fun with nose up/higher power settings once the fuel is burned a bit.
Have fun with yours!