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RE: EDF reversing for air brakes
I thought of the chute, but I liked the reversing better. What better way to show it off than to put the plane on the middle of the runway at the maiden flight, and back it down to the end of the runway for takeoff? While I have your attention, if for instance each EDF will have a 60amp ESC, what size wire, relay-rated contacts, etc will I need? I know by NEC the ratings on wires for their ampacities (#12 for 30amps etc) but the wire sizes and their ratings are very different. Any advice will really help. I REJECT YOUR REALITY AND SUBSTITUTE MY OWN
Posted on: 11/1/2009 10:34 PM by Author "rwolfe9"
in the forum "Electric RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=9221487
RE: EDF reversing for air brakes
The resistance of the relays/wires will be almost non-exsistant. I am putting them (4) at each pod since I need to have 8 ESC's. That way the wires will be as short as possible, and I can use a much smaller relay. If I used a single large relay with all of those contacts, the relay and the weight of the wires would be rediculous! I had run the feeds into the wings with a seperate feed for each set of EDF's and the weight it added was insane. From a suggestion from one of the guys in our club (CORSAIR) I changed the main spar to an aluminum tube and made that a + buss and added a #4 bare copper wire for the -. This really cut the weight and gives the same power. You all are probably correct about not needing all 8 EDF'S to reverse to brake the BUFF. That would cut down on the weight since there would be less relay weight. In response to the gentleman saying that I could probably use 4 EDF'S instead of all 8, I can't wait to hear all 8 roaring at takeoff. For that sound alone I will still be using 8. If anyone needs the diagram for the 4pole relays, let me know. I REJECT YOUR REALITY AND SUBSTITUTE MY OWN
Posted on: 10/30/2009 12:03 PM by Author "rwolfe9"
in the forum "Electric RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=9215025
RE: EDF reversing for air brakes
I have a scratch kit. I started from a 3-view and have gone from there. I drew plans that I scaled up, and when I am done (in about 2 years at this rate)I'll CAD them to send out. I REJECT YOUR REALITY AND SUBSTITUTE MY OWN
Posted on: 10/30/2009 11:46 AM by Author "rwolfe9"
in the forum "Electric RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=9214992
RE: Number of servos per channel
Where would I be able to find one of those? An earlier message talked about a power expander by Futaba, but I was unsuccessful on that search as well. HELP!
Posted on: 5/17/2009 3:25 PM by Author "rwolfe9"
in the forum "RC Radios, Transmitters, Receivers, Servos, gyros"
http://www.rcuniverse.com/forum/fb.asp?m=8776541
RE: Number of servos per channel
Couple thing come to mind with this information: 1. Are S3010 servos big enough for an airplane that size. Esxpecialy 1 per aileron 2. Instead of ganging all 4 servos together, use the elevators and ailerons on there own channel and then use mixing as required to accomplish the flight control you are trying to get. 3. What radio are you using? 1) With the chart I have it does say that with one servo per aileron I would need 75oz/in which is correct for this S3010. The rub is that this chart only goes up to a 100" span and I'm doing about 144". HELP! 2)That was what I was trying to do, you say it much better that I could. Sorry for the mixup. 3)Futaba 6EX-2.4GHz I REJECT YOUR REALITY AND SUBSTITUTE MY OWN.
Posted on: 5/17/2009 3:21 PM by Author "rwolfe9"
in the forum "RC Radios, Transmitters, Receivers, Servos, gyros"
http://www.rcuniverse.com/forum/fb.asp?m=8776532
RE: Number of servos per channel
It is a scratch built B-52. I was going to try this setup since the elevator control surfaces are scale, but seem small compared to the ailers. The aliers run the length of the TE of each wing. It is about a 12' span.[sm=spinnyeyes.gif] NO FACTORY INSTALLED SMOKE RELEASES.
Posted on: 5/15/2009 4:13 PM by Author "rwolfe9"
in the forum "RC Radios, Transmitters, Receivers, Servos, gyros"
http://www.rcuniverse.com/forum/fb.asp?m=8771753
RE: Number of servos per channel
Do you think it's overkill to work all 4 surfaces as elevons? I REJECT YOUR REALITY AND SUBSTITUTE MY OWN.[sm=spinnyeyes.gif]
Posted on: 5/15/2009 9:06 AM by Author "rwolfe9"
in the forum "RC Radios, Transmitters, Receivers, Servos, gyros"
http://www.rcuniverse.com/forum/fb.asp?m=8770793
Number of servos per channel
I am building a rather large plane and was considering operating the 4 typical elev and aler control surfaces all as elevons. I will be using 4-S3010 Futaba servos and a R606FS Rx. The Futaba site quotes 8amps continuious and 10amps peak-is this per channel? I wasn't able to find the draw on the servos. Also, is this a good idea for the surfaces? RESIST THE URGE TO RELEASE THE FACTORY INSTALLED SMOKE.[sm=spinnyeyes.gif]
Posted on: 5/15/2009 6:28 AM by Author "rwolfe9"
in the forum "RC Radios, Transmitters, Receivers, Servos, gyros"
http://www.rcuniverse.com/forum/fb.asp?m=8770540
RE: 2 Brushless motors for 1 ESC?!?
Thanks! I knew there had to be a reason for 1 to 1!
Posted on: 5/8/2009 9:53 PM by Author "rwolfe9"
in the forum "E-Flight Power Sources"
http://www.rcuniverse.com/forum/fb.asp?m=8753066
RE: EDF reversing for air brakes
Does anyone think that it would be benificial to have each of the 4 pods to have one EDF in normal rotation, and one in reverse rotation? This is providing that I can find a manufacturer that has both rotations avaliable.[sm=spinnyeyes.gif] I REJECT YOUR REALITY AND SUBSTITUTE MY OWN.
Posted on: 5/8/2009 9:47 AM by Author "rwolfe9"
in the forum "Electric RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=8751057
2 Brushless motors for 1 ESC?!?
Time for a stupid question! Is it possible to run 2 brushless motors on one ESC? For example: If you have 2 motors that are identical and are listed to use a 25amp ESC, shouldn't it be possible to use one 50amp ESC instead of 2? [sm=spinnyeyes.gif] I REJECT YOUR REALITY AND SUBSTITUTE MY OWN.
Posted on: 4/19/2009 4:38 PM by Author "rwolfe9"
in the forum "E-Flight Power Sources"
http://www.rcuniverse.com/forum/fb.asp?m=8696251
RE: b-52 RETRACTS
Not much to say, my computer was busted, and am slowly working thru the landing gear. Was able to contact someone who works on an airbase in California and he sent some pix I needed. Here's the erector set prototype. Should have 1 of 4 sets done in a week or 2. Taking my time so they look pretty. I REJECT YOUR REALITY AND SUBSTITUTE MY OWN
Posted on: 4/8/2009 4:33 PM by Author "rwolfe9"
in the forum "Scratch Building, Aircraft Design, 3D/CAD"
http://www.rcuniverse.com/forum/fb.asp?m=8662039
RE: elapor foam primer
I tried block filler. It is used by painters for filling in the holes in cement block before painting. I used it on my son's F-15 foamie. It took a few coats, but it did fill all the tiny holes.
Posted on: 3/31/2009 6:44 AM by Author "rwolfe9"
in the forum "Foamies! - RC Electric Foam Aircraft"
http://www.rcuniverse.com/forum/fb.asp?m=8634046
RE: b-52 RETRACTS
Too funny! That pix is about the same as the one I mocked up. Had a friend of mine suggest I prototype it on an Erector set, I've 3 of them. Ended up with almost what you said. 2 equal trailing arms to lower the vertical steering axle in a straight line, and the inner trailing arms equal but at an angle so that when they both go down they are pushed out. All arm links will be ball-type. Will put up a pix when I'm done with the proto. I REJECT YOUR REALITY AND SUBSTITUTE MY OWN
Posted on: 3/23/2009 4:38 PM by Author "rwolfe9"
in the forum "Scratch Building, Aircraft Design, 3D/CAD"
http://www.rcuniverse.com/forum/fb.asp?m=8608308
RE: b-52 RETRACTS
Too funny! That pix is about the same as the one I mocked up. Had a friend of mine suggest I prototype it on an Erector set, I've 3 of them. Ended up with almost what you said. 2 equal trailing arms to lower the vertical steering axle in a straight line, and the inner trailing arms equal but at an angle so that when they both go down they are pushed out. All arm links will be ball-type. Will put up a pix when I'm done with the proto. I REJECT YOUR REALITY AND SUBSTITUTE MY OWN
Posted on: 3/23/2009 4:01 PM by Author "rwolfe9"
in the forum "Scratch Building, Aircraft Design, 3D/CAD"
http://www.rcuniverse.com/forum/fb.asp?m=8608173
RE: B-36 build thread and free plans
I'm building a B-52 with a 12' wingspan and am taking ideas for LG. http://www.rcuniverse.com/forum/fb.asp?m=8529263&key= Here's some pix of real ones. I am planning to build them myself, but would be happy for some ideas. They look like when they retract the wheels move inboard and then up. They also do 4 wheel steering. I do have a 2000 CAD program, but am just starting on it. You folks must do this all the time, this thing is tough to learn. Thanks I REJECT YOUR REALITY AND SUBSTITUTE MY OWN
Posted on: 3/19/2009 11:12 PM by Author "rwolfe9"
in the forum "RC Scale Aircraft"
http://www.rcuniverse.com/forum/fb.asp?m=8596165
RE: b-52 RETRACTS
http://www.rcuniverse.com/forum/fb.asp?m=8529263&key= There are some pix at this thread of the LG. It looks like they move in horiz and then up. The other wrinkle is that they have 4 wheel steering so it can turn in less than a city block. That makes sense about the thrust/weight ratio. I'm just so used to the close to 1:1. I do have the stuff to make my own, just need to find a design. Thanks all! I REJECT YOUR REALITY AND SUBSTITUTE MY OWN
Posted on: 3/19/2009 11:02 PM by Author "rwolfe9"
in the forum "Scratch Building, Aircraft Design, 3D/CAD"
http://www.rcuniverse.com/forum/fb.asp?m=8596117
RE: b-52 RETRACTS
I also found something else shocking-the thrust from all 8 engines was 96 lbs, and the plane weighed almost 300! No wonder why it lumbered down the runway.
Posted on: 3/18/2009 10:38 AM by Author "rwolfe9"
in the forum "Scratch Building, Aircraft Design, 3D/CAD"
http://www.rcuniverse.com/forum/fb.asp?m=8590416
b-52 RETRACTS
I know there has to be someone here that can help me! I'm building a B-52 and am trying to build the retracts. I found this link for the UK model and I can' t find anymore info on it. http://www.stukastudios.se/b52.htm I REJECT YOUR REALITY AND SUBSTITUTE MY OWN
Posted on: 3/16/2009 10:48 PM by Author "rwolfe9"
in the forum "Scratch Building, Aircraft Design, 3D/CAD"
http://www.rcuniverse.com/forum/fb.asp?m=8585871
RE: C-130 items
Thanks. I'm building a B-52 and just wanted to make sure- 8 EDF's.
Posted on: 3/14/2009 12:17 PM by Author "rwolfe9"
in the forum "Twin & Multi Engine RC Aircraft"
http://www.rcuniverse.com/forum/fb.asp?m=8577060
RE: C-130 items
What did you have to do about making sure there was equal thrust on each motor? I think that even though each motor is made the same, they have different characteristics, or is it so small that it doesn't even matter?
Posted on: 3/12/2009 9:56 PM by Author "rwolfe9"
in the forum "Twin & Multi Engine RC Aircraft"
http://www.rcuniverse.com/forum/fb.asp?m=8572231
RE: EDF reversing for air brakes
Most excellent idea! Thanks! I REJECT YOUR REALITY AND SUBSTITUTE MY OWN
Posted on: 3/12/2009 9:17 AM by Author "rwolfe9"
in the forum "Electric RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=8569801
RE: EDF reversing for air brakes
I was thinking of a DPDT relay for each motor to swap 2 of the leads, and was going to have the landing gear down on a microswitch so the reverse on the 6th channel could only be operated when the gear is down. Thanks for the help. I knew that someone had thought of this before. I REJECT YOUR REALITY AND SUBSTITUTE MY OWN
Posted on: 3/11/2009 2:20 PM by Author "rwolfe9"
in the forum "Electric RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=8567164
RE: Flaps for a B-52
Thanks! Couldn't see that on my origional.
Posted on: 3/11/2009 8:19 AM by Author "rwolfe9"
in the forum "Scratch Building, Aircraft Design, 3D/CAD"
http://www.rcuniverse.com/forum/fb.asp?m=8566107
RE: Flaps for a B-52
Right now it is fairly rigid, with about a 2" bow with a force of about 10lbs applied at the middle. If I'm seeing it correctly, the real B-52 on the tarmack has no dihedral, it is created in flight when the weight is taken up by the wings. Also, I'm wondering how much torque I'm going to need to operate the control surfaces. I was considering putting 2 standard Futaba servos in tandem to operate each aileron. Also, I'd like to completely enclose the servos and rods in the wings. I think the lever arms would have enough room in the wing. Does anyone have some formulas for these processes?
Posted on: 3/11/2009 7:14 AM by Author "rwolfe9"
in the forum "Scratch Building, Aircraft Design, 3D/CAD"
http://www.rcuniverse.com/forum/fb.asp?m=8566013
RE: Flaps for a B-52
More than one way to skin a cat.
Posted on: 3/9/2009 7:33 PM by Author "rwolfe9"
in the forum "Scratch Building, Aircraft Design, 3D/CAD"
http://www.rcuniverse.com/forum/fb.asp?m=8560670
RE: EDF reversing for air brakes
I'll be using relays instead of a servo operated switch. Less mechanics to mess with. Got a wing thus far.
Posted on: 3/9/2009 7:29 PM by Author "rwolfe9"
in the forum "Electric RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=8560651
RE: Flaps for a B-52
Right now I have the main spar long enough to extend through the fuse into the opposite wing. It is 3/4 x 1-1/2 poplar. That is the idea for now, more details after I get farther. Beware Murphy's Law!
Posted on: 3/9/2009 6:30 PM by Author "rwolfe9"
in the forum "Scratch Building, Aircraft Design, 3D/CAD"
http://www.rcuniverse.com/forum/fb.asp?m=8560471
RE: Flaps for a B-52
Duh, what's a spar box?
Posted on: 3/9/2009 6:26 AM by Author "rwolfe9"
in the forum "Scratch Building, Aircraft Design, 3D/CAD"
http://www.rcuniverse.com/forum/fb.asp?m=8558444
RE: EDF reversing for air brakes
Well, I haven't done brakes before. They cost money and the EDF's are already there, and I'm an electrician and just live for that kind of stuff.
Posted on: 3/9/2009 5:50 AM by Author "rwolfe9"
in the forum "Electric RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=8558403
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