Harrier 3D 90 setup and antenna routing
#1
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From: Dickinson,
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I am about to finish up my Harrier 3d 90 and would like to know if there are any setup tips that anyone has for this plane? Also where should I run the antenna out? I was thinking about drilling a hole about 1 inch behind the canopy and glueing in a piece of fuel tubing to protect the antenna and run it out there. Last but not least who has flown this plane and how well does it fly?
Just so you know I'm not a beginner well not a complete beginner anyway I have been flying my p-51 pts as much as possible and started with a Nexstar I can fly and land any plane on realflight g3 with no problems. The reason I am posting here is I don't know what would be the best thread to post on. I know the harrier is a little out of my league for right now but I plan on flying solo by July with this plane, and hopefully have it in the air by mid May with help. If everything works out it should be ready for flight this weekend. 4/28/07
Before you call me an idiot remember my original question's.

Just so you know I'm not a beginner well not a complete beginner anyway I have been flying my p-51 pts as much as possible and started with a Nexstar I can fly and land any plane on realflight g3 with no problems. The reason I am posting here is I don't know what would be the best thread to post on. I know the harrier is a little out of my league for right now but I plan on flying solo by July with this plane, and hopefully have it in the air by mid May with help. If everything works out it should be ready for flight this weekend. 4/28/07
Before you call me an idiot remember my original question's.


#2
IDIOT!
Just kidding. So long as your antena wire is routed such that it streatches out from the receiver without interfering with moving parts you should be fine. I bet you will find the plane flies easier than your p-51. Use low rates! It will be more responsive than your p-51. I also recomend the use of exponential on the elevator and ailerons. While I have never flown one of these I have flown other 3D planes such as the Funtana 40s and X100. You will enjoy it and after you start to get used to it don't be afraid to play with the CG a little at a time.
Just kidding. So long as your antena wire is routed such that it streatches out from the receiver without interfering with moving parts you should be fine. I bet you will find the plane flies easier than your p-51. Use low rates! It will be more responsive than your p-51. I also recomend the use of exponential on the elevator and ailerons. While I have never flown one of these I have flown other 3D planes such as the Funtana 40s and X100. You will enjoy it and after you start to get used to it don't be afraid to play with the CG a little at a time.
#3

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From: Warialda NSW, AUSTRALIA
G'day Mate,
The Harrier flies very well, your idea about the antenna, is good, run it up to the top of the fin, push a pin through the end of about 1/2" of fuel tube, with couple of small slits in it, & pass the antenna through these slits, then push the pin, into the front of the fin.
Balance slightly nose heavy for the first flights, use low aileron & elevator throws, with duel rates set, fly on low rates to start with, & set high rate, so that high rate gives about 10% more than low rate, incase more control is needed.
And use a fine pitch prop, about 4" pitch would be good, but no more than 6". Prop diameter will depend on motor.
They don't need lots of speed, in fact they will flutter the control surfaces if flown too fast.
And last of all, & I'm sure you will anyway, get help, even if it is just to have some moral support for the first few flights.
Above all, enjoy, that's what it's all about.
The Harrier flies very well, your idea about the antenna, is good, run it up to the top of the fin, push a pin through the end of about 1/2" of fuel tube, with couple of small slits in it, & pass the antenna through these slits, then push the pin, into the front of the fin.
Balance slightly nose heavy for the first flights, use low aileron & elevator throws, with duel rates set, fly on low rates to start with, & set high rate, so that high rate gives about 10% more than low rate, incase more control is needed.
And use a fine pitch prop, about 4" pitch would be good, but no more than 6". Prop diameter will depend on motor.
They don't need lots of speed, in fact they will flutter the control surfaces if flown too fast.
And last of all, & I'm sure you will anyway, get help, even if it is just to have some moral support for the first few flights.
Above all, enjoy, that's what it's all about.
#4

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From: Malden,
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Harrier is a great plane. Use low rates at first! I always use low rates to take off and land. It could be because I'm not really used to the plane yet, but on high rates, a touch of elevator on landing will rocket it back into the sky.
I did what you are asking with my antenna. I just drilled a 1/16 hold about an inch behind the canopy and ran it out there.
This plane on low rates is 10x easier to fly than my trainer. Honestly. It tracks straight as an arrow and floats so well I have trouble getting it to land. I am using a Saito 100 and an APC 16x4w prop, and it still doesn't slow it enough even if I am at dead idle during the landing routine. I ended up having to nose up the plane kind of far out so that it was practically stalled and then use throttle to control the descent.
It will land on a dime. By far my favorite plane. Granted I only own 4.
I did what you are asking with my antenna. I just drilled a 1/16 hold about an inch behind the canopy and ran it out there.
This plane on low rates is 10x easier to fly than my trainer. Honestly. It tracks straight as an arrow and floats so well I have trouble getting it to land. I am using a Saito 100 and an APC 16x4w prop, and it still doesn't slow it enough even if I am at dead idle during the landing routine. I ended up having to nose up the plane kind of far out so that it was practically stalled and then use throttle to control the descent.
It will land on a dime. By far my favorite plane. Granted I only own 4.
#5
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From: Dickinson,
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67stang, Alan and Pete thanks for your input on this plane. Just a little info on my equipment, I will be using a JR 9303 heli radio, so my flight mode switch will controll my rates. I have it set for 3 different rates and 3 different expo's I don't know what my control surfaces deflection is off hand but after reading your posts I'm sure my low rate is a little high on aileron and elevator, but that is easy enough to change. I will be running a Evolution 100 engine with a 14X6 prop. Is this over kill? I hope not, I can switch to a 14X4 prop for now but I already bought 2, 14X6 so I will use them eventually. I knew the engine was more than I needed in this plane but I wanted it somewhat over powered.
1 I need to plug or in some way not use the third line coming out of the fuel tank, whats the best way to do this? The reason I'm not using the fill line is because I'm using an Du-Bro filler valve. I was thinking the easiest way would be to simply put a small piece of fuel tubing on the line and then fold it over to kink it shut, but this is a quick fix that I don't think will work for very long, and I'm not sure of any stopper that will work with this tank.
http://www2.towerhobbies.com/cgi-bin...&I=LXD745&P=ML
2 Will JR DS821 servos be a high enough torque for this plane? The servos have 88oz/in of torque @ 6v, yes I plan on using a 5 cell pack.
http://www.horizonhobby.com/Products...ProdID=JRPS821
If the link does not work just put the number in a search engine.
Thanks in advance for any more help.
1 I need to plug or in some way not use the third line coming out of the fuel tank, whats the best way to do this? The reason I'm not using the fill line is because I'm using an Du-Bro filler valve. I was thinking the easiest way would be to simply put a small piece of fuel tubing on the line and then fold it over to kink it shut, but this is a quick fix that I don't think will work for very long, and I'm not sure of any stopper that will work with this tank.
http://www2.towerhobbies.com/cgi-bin...&I=LXD745&P=ML
2 Will JR DS821 servos be a high enough torque for this plane? The servos have 88oz/in of torque @ 6v, yes I plan on using a 5 cell pack.
http://www.horizonhobby.com/Products...ProdID=JRPS821
If the link does not work just put the number in a search engine.
Thanks in advance for any more help.
#7

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From: Warialda NSW, AUSTRALIA
G'day Mate,
You may even try a 15x4, overpower this plane is fine, but DON"T overspeed it, or any good 3D aircraft, they are not designed for all out speed.
As for fueling, I personally don't use fuelers, because they will eventually leak, not fuel, but air, because it is on the suction side, of the carby, & that will cause mixture problems, so I use fuel dots, use the third line, & put the fuel dot where you were going to put the fueler, all probelms solved.
Those servos will be fine. If you need more power it will generally be on the rudder, suck it & see.
You may even try a 15x4, overpower this plane is fine, but DON"T overspeed it, or any good 3D aircraft, they are not designed for all out speed.
As for fueling, I personally don't use fuelers, because they will eventually leak, not fuel, but air, because it is on the suction side, of the carby, & that will cause mixture problems, so I use fuel dots, use the third line, & put the fuel dot where you were going to put the fueler, all probelms solved.
Those servos will be fine. If you need more power it will generally be on the rudder, suck it & see.
#9

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From: Malden,
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ORIGINAL: haasjj
1 I need to plug or in some way not use the third line coming out of the fuel tank, whats the best way to do this? The reason I'm not using the fill line is because I'm using an Du-Bro filler valve. I was thinking the easiest way would be to simply put a small piece of fuel tubing on the line and then fold it over to kink it shut, but this is a quick fix that I don't think will work for very long, and I'm not sure of any stopper that will work with this tank.
http://www2.towerhobbies.com/cgi-bin...&I=LXD745&P=ML
2 Will JR DS821 servos be a high enough torque for this plane? The servos have 88oz/in of torque @ 6v, yes I plan on using a 5 cell pack.
http://www.horizonhobby.com/Products...ProdID=JRPS821
If the link does not work just put the number in a search engine.
1 I need to plug or in some way not use the third line coming out of the fuel tank, whats the best way to do this? The reason I'm not using the fill line is because I'm using an Du-Bro filler valve. I was thinking the easiest way would be to simply put a small piece of fuel tubing on the line and then fold it over to kink it shut, but this is a quick fix that I don't think will work for very long, and I'm not sure of any stopper that will work with this tank.
http://www2.towerhobbies.com/cgi-bin...&I=LXD745&P=ML
2 Will JR DS821 servos be a high enough torque for this plane? The servos have 88oz/in of torque @ 6v, yes I plan on using a 5 cell pack.
http://www.horizonhobby.com/Products...ProdID=JRPS821
If the link does not work just put the number in a search engine.
For filling, I simply put a section of fuel tubing on the input on the tank, and I leave it hanging out a bit with a little screw in the end. Easy to fill up, easy to hide if I ever decide to put the cowl on.
I use standard Futaba 3004 servos. It moves the plane just fine for my taste. It all comes down to what YOU are comfortable with. I fly with the standard servos now, and once I get comfortable with it, I might put in high torques. Or, I might not. I think the plane is just fine the way it is now. The standards move the surfaces fast enough and far enough for my taste. A 6v pack will move standard servos a bit harder, but make sure your servos can handle 6v.
#10
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From: Dickinson,
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The reason I went with the 14X6 prop is because is was the recomended bench mark prop for the engine, but i will most certainly try a few others. I like the sound of a 15 or 16X4 it should look nice sitting up front and keep rmp down a little. I have used the fuel line with a plug for fueling before ( i still use this setup on my heli) I just wanted a neat looking setup, after your recomendations I might try a different kind of fuel dot. Its made by Slim line, it looks very nice and it should seal properly so I won't get an air leak. Well it realy isn't a fuel dot but but it is similar to the Du-Bro. I guess I'll check my LHS and see what he has.
http://www2.towerhobbies.com/cgi-bin...?&I=LXEXX1&P=7
Good news for the servo's, I thought they might be underpowered for the large control surfaces on this plane but if 3004 work's the 821 should be fine, and I know 6v will be ok I've used them before and there fine.
Thanks again for your help. Hopefully I'll get some pics posted after I get it all together.
http://www2.towerhobbies.com/cgi-bin...?&I=LXEXX1&P=7
Good news for the servo's, I thought they might be underpowered for the large control surfaces on this plane but if 3004 work's the 821 should be fine, and I know 6v will be ok I've used them before and there fine.
Thanks again for your help. Hopefully I'll get some pics posted after I get it all together.
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From: Dickinson,
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I didn't get the plane finished over the weekend [&o] but it should be done in a week or two and the I'll upload the pics then.



