P-38 Lightning Brotherhood
04-21-2014, 05:10 PM
#401
[QUOTE=fw190;
I am wondering what size packs I can use with the AXi that will be decent speed and duration, What flight time would I expect from a 10S 5000mah
QUOTE]
Vic, just reading thru your other thread, very cool!
Are you thinking a single 5000 pack for both motors, or one pack per side? Which KV motors are those?
I am wondering what size packs I can use with the AXi that will be decent speed and duration, What flight time would I expect from a 10S 5000mah
QUOTE]
Vic, just reading thru your other thread, very cool!
Are you thinking a single 5000 pack for both motors, or one pack per side? Which KV motors are those?
Last edited by 70 ragtop; 04-21-2014 at 06:02 PM.
04-22-2014, 12:12 AM
#402
My Feedback: (37)
I am thinking 10s 5000 for each motor or even 10S 4000 (5.5lbs for the set) if flight time is good. I think the 5000s will fit, one straight 10s in the pod above the nose retract and two 5S packs inside the inner panels. That would be about 7-8lbs of batteries though.
These are the AXI 5330/18, I am wondering what flight time I could obtain with a 16x8 3-blade.
These are the AXI 5330/18, I am wondering what flight time I could obtain with a 16x8 3-blade.
04-22-2014, 08:52 AM
#403
70 ragtop,
I have two of the Vario prop systems. A three blade and four blade 20". He states 9000 rpm max. I have not had the chance to test them yet, as I'm still in the build stage.
There incredibly nice systems and very well-made. I'm going to use one on an AXI 5345 motor
Casey
I have two of the Vario prop systems. A three blade and four blade 20". He states 9000 rpm max. I have not had the chance to test them yet, as I'm still in the build stage.
There incredibly nice systems and very well-made. I'm going to use one on an AXI 5345 motor
Casey
04-22-2014, 10:01 AM
#408
The one thing you will need to purchase additional, is a prop adapter from trueturn, as it needs to be just a little longer to accommodate under a spinner. The sell them for most all electrics now
http://www.truturn.com/cgi-bin/store...ctrics&maxp=30
http://www.truturn.com/cgi-bin/store...ctrics&maxp=30
Last edited by glazier808; 04-22-2014 at 10:04 AM.
04-22-2014, 11:12 AM
#409
Casey
Check out the new 32I series, must have just introduced them. Perfect for 1/5 scale warbirds!
http://www.ramoser.de/home_e/variopr...rioprop_e.html
Vic
I wanted to run some numbers before answering on flight times, but my first thought is those are the wrong props for those motors on that plane. Will certainly work, but may be able to do better. Hope to run some numbers tonight
Check out the new 32I series, must have just introduced them. Perfect for 1/5 scale warbirds!
http://www.ramoser.de/home_e/variopr...rioprop_e.html
Vic
I wanted to run some numbers before answering on flight times, but my first thought is those are the wrong props for those motors on that plane. Will certainly work, but may be able to do better. Hope to run some numbers tonight
04-22-2014, 08:16 PM
#411
Vic
Took a look a some numbers, got to say up front, these are just rough numbers, and not based on actual data for that setup. Stuck with common props, although I too am still looking at options including Vario-props, and Fiala, that EDF-nut turned us on to (link below)
All that said, looking at MA 16x8x3 your top speed S&L would be a little less than 80MPH, pulling roughly 1300watts each side, that's at WOT S&L. Flight time roughly 7 minutes. Thinking you may need full throttle most of the time.
Looking at MA 16x10x3 your top speed would be 90-95ish pulling roughly 1800 amps at WOT S&L. Flight time would be roughly 5-6 minutes. Part throttle 80 MPH roughly 1100 watts, mixed throttle you could get close to 6.5-7 minutes
Looking at APC 15.75x13x3 your top speed would be 120-125ish pulling 3200watts at WOT (over motor rating), flight time at WOT would be less than 3.5 minutes. At partial throttle 80MPH roughly 1000watts. Mixed flight time roughly 5 min
Looking at the same prop on 8 cells right around 95MPH top speed S&L, pulling 1400 watts with around 5-6 minute flights. Partial throttle 80MPH 1000watts. Mixed flight close to 7 minutes. Roughly a pound and quarter less battery weight
Naturally verticals and maneuvering increases load, and uses up batteries faster. I would take a minute or two off these times until you get some real data on amperage draw in flight, and battery levels post flight. With good throttle control, I would think you could better these times. Heavy thumb like me, they will be less
Hope this helps
http://www.vrtule-fiala.cz/index.php...mid=56&lang=en
Took a look a some numbers, got to say up front, these are just rough numbers, and not based on actual data for that setup. Stuck with common props, although I too am still looking at options including Vario-props, and Fiala, that EDF-nut turned us on to (link below)
All that said, looking at MA 16x8x3 your top speed S&L would be a little less than 80MPH, pulling roughly 1300watts each side, that's at WOT S&L. Flight time roughly 7 minutes. Thinking you may need full throttle most of the time.
Looking at MA 16x10x3 your top speed would be 90-95ish pulling roughly 1800 amps at WOT S&L. Flight time would be roughly 5-6 minutes. Part throttle 80 MPH roughly 1100 watts, mixed throttle you could get close to 6.5-7 minutes
Looking at APC 15.75x13x3 your top speed would be 120-125ish pulling 3200watts at WOT (over motor rating), flight time at WOT would be less than 3.5 minutes. At partial throttle 80MPH roughly 1000watts. Mixed flight time roughly 5 min
Looking at the same prop on 8 cells right around 95MPH top speed S&L, pulling 1400 watts with around 5-6 minute flights. Partial throttle 80MPH 1000watts. Mixed flight close to 7 minutes. Roughly a pound and quarter less battery weight
Naturally verticals and maneuvering increases load, and uses up batteries faster. I would take a minute or two off these times until you get some real data on amperage draw in flight, and battery levels post flight. With good throttle control, I would think you could better these times. Heavy thumb like me, they will be less
Hope this helps
http://www.vrtule-fiala.cz/index.php...mid=56&lang=en
Last edited by 70 ragtop; 04-22-2014 at 08:51 PM.
05-03-2014, 07:54 PM
#413
Managed to run one motor today on the 90" P-38, and all I can say is WOW. Motor is a Scorpion 4025-12, prop used was a APC 15.75x13x3, with a Plush ESC on a Gens Ace 5300 6S. My tach would not pick up the blades, but I can tell you it was pulling really hard. It pulled over 2700 watts at 127 amps. With two of these things pulling this plane around, I would expect the props to really unload in cruise, and drop the watts around half, less with throttle control. Motors are rated for 85 amps continious
I think I'm going to start with MA 16X10X3s and see how they do before going with the APC. The APCs are really going to use up the batteries fast, so I think the 3rd battery above the nose gear is going to happen.
Here's a couple pictures of the setup, so far, the rounded lower corners on the left boom, and checking out the area in the nose. I have to say it really is a nice size, not too big, not too small. Can't wait to see some progress with Vics plane, same size, but very scale
I think I'm going to start with MA 16X10X3s and see how they do before going with the APC. The APCs are really going to use up the batteries fast, so I think the 3rd battery above the nose gear is going to happen.
Here's a couple pictures of the setup, so far, the rounded lower corners on the left boom, and checking out the area in the nose. I have to say it really is a nice size, not too big, not too small. Can't wait to see some progress with Vics plane, same size, but very scale
05-03-2014, 08:32 PM
#414
Ran across some nice drawings of nose art that I thought might be helpful. Can be difficult to find clear pictures of nose art. For some reason I didn't save the web site address, but will link it when I find it. The web sight has overall views, with Squadron/deployment/crew details
Last edited by 70 ragtop; 05-03-2014 at 08:39 PM.
05-03-2014, 09:29 PM
#415
The placement of the bats are perfect. Your going to need the weight foreword. On my N90 I have a some what similar arrangement of the bats but I need to remove the engine cowls to charge them , What do you have in mind for charging?
For the nose art is this what you had in mind ? http://www.markstyling.com/p38s_1.htm
For the nose art is this what you had in mind ? http://www.markstyling.com/p38s_1.htm
Last edited by panhandler; 05-03-2014 at 09:51 PM.
05-04-2014, 05:29 AM
#416
The placement of the bats are perfect. Your going to need the weight foreword. On my N90 I have a some what similar arrangement of the bats but I need to remove the engine cowls to charge them , What do you have in mind for charging?
For the nose art is this what you had in mind ? http://www.markstyling.com/p38s_1.htm
For the nose art is this what you had in mind ? http://www.markstyling.com/p38s_1.htm
Going to make hatches in the top, and nose cone will be held on with magnets.
Curious if you had a chance to run the new Scorpions yet? The power coming out of such a small package surprised me! I'm thinking MA 16x10x3 as the baseline props should be no problem for these motors.
05-04-2014, 06:28 AM
#417
Dan
05-04-2014, 08:11 AM
#418
My Feedback: (31)
I just came across this and I am so thankful. P-38 freak here. I am actually about finish my Yellow P-38. 104" and i found a cool vynal company that does panels for flight metal. Here are some photos before I apply the markings and paint.
My question is that I am looking for either a KMP kit or a VQ kit. Does anyone know where I can find those? Are they extinct?
Austin Chadwick
My question is that I am looking for either a KMP kit or a VQ kit. Does anyone know where I can find those? Are they extinct?
Austin Chadwick
05-04-2014, 07:16 PM
#419
Welcome Austin
Very nice looking model you have there. Curious what you mean by a vinyl company that does panels for flite metal?
As far as KMP and VQ, no they are no longer available new, unless you find one in a LHS. The KMP comes up for sale every so often. A new kit sold for $400 on Ebay a few weeks ago, and there is one for sale here on RCU, in RTF condition. Not too many VQs come on the market. If you look back around post 374, Bob Paris offered a VQ White Lightning to the group a few weeks ago. I believe it is a new kit, but the left boom is damaged, and I think he has two rights. Might be able to work something out with Bob.
I'm not too sure what the story is with VQ, if it is just a lack of importer to the US, or if they have stopped making them. To me, it looks like they are still avalible in the UK, but I am not sure about that
Anyways, welcome to the group
Updated Membership attached
[ATTACH]1992585[/IMG]
Very nice looking model you have there. Curious what you mean by a vinyl company that does panels for flite metal?
As far as KMP and VQ, no they are no longer available new, unless you find one in a LHS. The KMP comes up for sale every so often. A new kit sold for $400 on Ebay a few weeks ago, and there is one for sale here on RCU, in RTF condition. Not too many VQs come on the market. If you look back around post 374, Bob Paris offered a VQ White Lightning to the group a few weeks ago. I believe it is a new kit, but the left boom is damaged, and I think he has two rights. Might be able to work something out with Bob.
I'm not too sure what the story is with VQ, if it is just a lack of importer to the US, or if they have stopped making them. To me, it looks like they are still avalible in the UK, but I am not sure about that
Anyways, welcome to the group
Updated Membership attached
[ATTACH]1992585[/IMG]
Last edited by 70 ragtop; 05-04-2014 at 07:22 PM.
05-05-2014, 07:40 PM
#421
My Feedback: (31)
This is what we used. Price isn't too bad. The beauty is that they pre cut the vinyl into the panel dimensions of the plane. So if there is ever damage, you should have a back up set of Vinyl so you just have to replace the one panel that is damaged. If that makes sense.
http://carlb-rcplanes.com/http://carlb-rcplanes.com/
Real easy to paint or apply decals afterwards. I am running 2, 40cc equivalent electric motors. Same type of set up I use for my 1/5 scale warbirds. Just twice as much. At 2900w a piece, it will be real close to vertical climbing. I know I know... Electric? But I do the sound systems and have a couple of 5in speakers boxed up on it and when you pipe the dual allisons, it is FANTASTIC!
Another quick question, when I do counter rotating, should I have them spinner away from the top of the canopy, or toward. I have seen both but it seems that it would be more safe to have them going away. That way if one goes out, the torque from the other tries to keep it balanced a little bit right?
http://carlb-rcplanes.com/http://carlb-rcplanes.com/
Real easy to paint or apply decals afterwards. I am running 2, 40cc equivalent electric motors. Same type of set up I use for my 1/5 scale warbirds. Just twice as much. At 2900w a piece, it will be real close to vertical climbing. I know I know... Electric? But I do the sound systems and have a couple of 5in speakers boxed up on it and when you pipe the dual allisons, it is FANTASTIC!
Another quick question, when I do counter rotating, should I have them spinner away from the top of the canopy, or toward. I have seen both but it seems that it would be more safe to have them going away. That way if one goes out, the torque from the other tries to keep it balanced a little bit right?
05-05-2014, 08:08 PM
#422
My Feedback: (3)
This is what we used. Price isn't too bad. The beauty is that they pre cut the vinyl into the panel dimensions of the plane. So if there is ever damage, you should have a back up set of Vinyl so you just have to replace the one panel that is damaged. If that makes sense.
http://carlb-rcplanes.com/http://carlb-rcplanes.com/
Real easy to paint or apply decals afterwards. I am running 2, 40cc equivalent electric motors. Same type of set up I use for my 1/5 scale warbirds. Just twice as much. At 2900w a piece, it will be real close to vertical climbing. I know I know... Electric? But I do the sound systems and have a couple of 5in speakers boxed up on it and when you pipe the dual allisons, it is FANTASTIC!
Another quick question, when I do counter rotating, should I have them spinner away from the top of the canopy, or toward. I have seen both but it seems that it would be more safe to have them going away. That way if one goes out, the torque from the other tries to keep it balanced a little bit right?
http://carlb-rcplanes.com/http://carlb-rcplanes.com/
Real easy to paint or apply decals afterwards. I am running 2, 40cc equivalent electric motors. Same type of set up I use for my 1/5 scale warbirds. Just twice as much. At 2900w a piece, it will be real close to vertical climbing. I know I know... Electric? But I do the sound systems and have a couple of 5in speakers boxed up on it and when you pipe the dual allisons, it is FANTASTIC!
Another quick question, when I do counter rotating, should I have them spinner away from the top of the canopy, or toward. I have seen both but it seems that it would be more safe to have them going away. That way if one goes out, the torque from the other tries to keep it balanced a little bit right?
05-05-2014, 08:44 PM
#423
This is what we used. Price isn't too bad. The beauty is that they pre cut the vinyl into the panel dimensions of the plane. So if there is ever damage, you should have a back up set of Vinyl so you just have to replace the one panel that is damaged. If that makes sense.
http://carlb-rcplanes.com/http://carlb-rcplanes.com/
Real easy to paint or apply decals afterwards. I am running 2, 40cc equivalent electric motors. Same type of set up I use for my 1/5 scale warbirds. Just twice as much. At 2900w a piece, it will be real close to vertical climbing. I know I know... Electric? But I do the sound systems and have a couple of 5in speakers boxed up on it and when you pipe the dual allisons, it is FANTASTIC!
Another quick question, when I do counter rotating, should I have them spinner away from the top of the canopy, or toward. I have seen both but it seems that it would be more safe to have them going away. That way if one goes out, the torque from the other tries to keep it balanced a little bit right?
http://carlb-rcplanes.com/http://carlb-rcplanes.com/
Real easy to paint or apply decals afterwards. I am running 2, 40cc equivalent electric motors. Same type of set up I use for my 1/5 scale warbirds. Just twice as much. At 2900w a piece, it will be real close to vertical climbing. I know I know... Electric? But I do the sound systems and have a couple of 5in speakers boxed up on it and when you pipe the dual allisons, it is FANTASTIC!
Another quick question, when I do counter rotating, should I have them spinner away from the top of the canopy, or toward. I have seen both but it seems that it would be more safe to have them going away. That way if one goes out, the torque from the other tries to keep it balanced a little bit right?
http://dynamic-rc.com/dynaskin.html
Go prototypical, top of props spinning outboard
Last edited by 70 ragtop; 05-05-2014 at 08:46 PM.
05-06-2014, 01:54 AM
#425
My Feedback: (13)
Hi Guys,
There is a possibility that ESM is coming out with a P-38 by the end of the year. The guy wants $800.00 for the VQ P-38 and that is a bit of money...but if you just gotta have one, there it is.
I have a full kit, but needs a left engine nacelle/boom...other then this, its mostly an un-built kit. I do have two sets of turbo covers, spinners and canopies. The wings are built and built correctly. I would sell it, but shipping out of Hawai'i for a kit like this would not be cheap. So folks...anyone have a spare left nacelle/boom...and I don't care what color it is? With this I would be able to get this kit in the air. The left nacelle/boom I have is damaged and other then this, a complete kit.
Sort Landings Always,
Bobby of Maui
There is a possibility that ESM is coming out with a P-38 by the end of the year. The guy wants $800.00 for the VQ P-38 and that is a bit of money...but if you just gotta have one, there it is.
I have a full kit, but needs a left engine nacelle/boom...other then this, its mostly an un-built kit. I do have two sets of turbo covers, spinners and canopies. The wings are built and built correctly. I would sell it, but shipping out of Hawai'i for a kit like this would not be cheap. So folks...anyone have a spare left nacelle/boom...and I don't care what color it is? With this I would be able to get this kit in the air. The left nacelle/boom I have is damaged and other then this, a complete kit.
Sort Landings Always,
Bobby of Maui
Last edited by Bob Paris; 05-06-2014 at 01:58 AM.