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New Hangar 9 P-51 60cc

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New Hangar 9 P-51 60cc

Old 03-12-2015, 06:08 AM
  #676  
david57
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Originally Posted by sjhanc
I am using the Benedini sound system, The motor batteries are a 6 pack of Hobby people 3200mah 4s 30c lipos wired 12s 2p and a new Zippy 6 pack of 3300mah 4s 35c lipos wired the same. I was using 12s 5300 45c Gens Ace lipos but the current load is to much for a 12s pack. The 6 packs run cooler as the current is divided between the parrallel packs. Each cell only sees half the load. Current load was 134amps with the VarioProp set at 18 inch pitch during climbout from takeoff until the gear retract then drops to 80amps as the plane accelerates to fast cruise (80-90mph). An acceleration from cruise to top speed initially draws 130amps but drops back much lower as it tops out. One session with a GPS speed app on board recorded with an on board sport cam captured top speeds of 107-114mph. Lift-off was at around 23mph and full flap landing speed is 33mph. The next flight will be with the pitch set at 20 inches because the Rimfire 65cc motor is still over-revving the varioprop. The design rpm limit for it is 4800rpm. I never use full throttle for takeoffs so I might reduce the transmitter's throttle servo upper travel to control the top rpm. I don't want it to fly faster than it was getting to before the Varioprop as the airframe is not glassed and I have already had a D model fuse break in half at a radar clocked 122mph. There is a design flaw in the fuse that produces a weak spot at the back of the cockpit. It can easily be fixed by installing 3/4 inch balsa triangle stock on both sides of the bulkhead there (4 pieces). I get 5 minutes of high speed flight at half throttle and up to 2 go a rounds for landing. & minutes total.
Where are you putting the batteries for the motor?
Old 03-12-2015, 06:10 AM
  #677  
david57
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Originally Posted by sjhanc
http://youtu.be/HTKD1gU-MQQ This the link to my plane flying with the VarioProp.
Really enjoyed the video. Nice flying!
Old 03-12-2015, 06:11 AM
  #678  
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Originally Posted by sjhanc
http://youtu.be/HTKD1gU-MQQ This the link to my plane flying with the VarioProp.
Really enjoyed the video. Nice flying!
Old 03-12-2015, 06:11 AM
  #679  
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Originally Posted by sjhanc
http://youtu.be/HTKD1gU-MQQ This the link to my plane flying with the VarioProp.
Really enjoyed the video. Nice flying!
Old 03-12-2015, 06:58 AM
  #680  
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I removed the tank shelf and installed a shelf on each side of the compartment. The electric installation is installed with wood screws and the plane can be converted back to gas in a couple of hours. There are 6, 4 cell lipos. In this picture 4 are stacked behind the CG and 2 in front. The wiring harness is not shown. The red and black marks on the wing saddles are there to check the CG before putting the wing back on. I first set the CG with all equipment on board ( move the batteries around to get it exactly right), then removed the wing and lifted the fuse with 2 fingers on the wing saddles to locate the CG without the wing. I put the 2 marks on each side of where my fingers need to be for the fuse to hang level. At the field when installing battery packs of different weight ( 1 have 3 different batt. configurations), I lift the fuse with 2 fingers on the wing saddles for a quick CG check. If OK, put the wing on and go fly.
I will probably get a new fuse part from Tower and build a battery hatch into the top so removing the wing is not necessary. I have seen this done to Aero Works P 51s. This is the way to go if you start out electric, my plane was built with DA 50R power and the change to electric happened during the middle of the Florida flying season (winter). Our building season in Florida starts at the end of May when the temperature gets to 90 degrees.
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Old 03-12-2015, 08:05 AM
  #681  
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Thanks, If I go with electric I will build a hatch. I am also considering a da-85 with a $ blade prop.
Old 03-13-2015, 02:11 PM
  #682  
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I only need the spinner and muffler to be up in the air.


I have some extras in this build. I have the iGyro but it is not wired in. That will happen after I get everything else going and tuned. I have the lighting system installed. The canopy operates. I have bomb drops. I needed more channels so I installed the X-Plus extension to my 12 channel receiver.


The ignition battery is in the compartment just above it on the planes right side. The other three are in the battery compartment. Instead of a screw bottom cover I converted it to a snap-in place cover. The four corner screws are fake but cover the holes. Inside are the four switches for 1-ignition, 2- x-Plus module (controls the landing gear, bombs, lights. Switches 3 and 4 are the receiver batteries. All are 2500mA LiFe batteries. This should not hurt anything as they say we need nose weight. It will be in batteries and it simplifies charging.


All batteries go through a charge/on-off switch module that allows for charging with only one cable. I never have to disconnect batteries. There is an adapter that connects to your 2s balance cord and charge leads. These large switches cut the batteries off at the source so there is no parasitic load.


The fuel filler is correct and at the canopy for the fuselage tank. There are no external switches or others items.

I used TBOLT harnesses to simplify hooking up to the wing but still a lot going on here. The wing connections are TBOLT as well so I only have one connection at each wing tip tube slide area.


aehaas

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Old 03-13-2015, 04:08 PM
  #683  
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I'm not anti-gyro, quite the opposite, I just reviewed the IGyro and did a two part series in my jet column on busting gyro myths and how to set one up in a fixed wing plane.

But this plane doesn't need a gyro.
Old 03-14-2015, 01:02 PM
  #684  
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Ok, I am all done the build and have checked out everything from a radio and control perspective. I have to get the CG dialed in. A preliminary check indicated I need a little more weight to the front. Clearly a little tail heavy. Has anyone flown with the CG recommendations and have any thoughts on what the manual calls for now that you have flown the plane? I know this is a bit of preference within the range but would be nice to hear? Also, my weight is above the 25lb estimate in the specs. Seems they often under estimate. I did some quick weight check without fuel and I think I am in the 27-28 lb range. I don't have extras on this either. I have bomb/payload drop, but no lights. But larger batteries, pilot figure, choke servo/linkage, etc. and it adds up. I am using all 12 channels on the receiver when you include ignition kill and bomb/payload tank drops.

Here are some final pictures and a video of retracts working on the plane. Once I get to maiden it I'll report back how it flies.

https://www.youtube.com/watch?v=PXbx0VJJqUc
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Old 03-14-2015, 05:05 PM
  #685  
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http://youtu.be/TlvuQJvG28k A short video of aehaas Mustang gear. Notice the delay between the left and right gear. More scale like.
Old 03-14-2015, 05:13 PM
  #686  
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Default Sliding canopy

http://youtu.be/6W5UhgMMiI4 aehaas sliding canopy. Notice the fuel filler. Actually works.
Old 03-14-2015, 06:11 PM
  #687  
vertical grimmace
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Do you have a Firgelli actuator on your sliding canopy? If so, how did you set it up in your radio to be able to stop it mid stroke?
Old 03-14-2015, 06:30 PM
  #688  
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Originally Posted by vertical grimmace
Do you have a Firgelli actuator on your sliding canopy? If so, how did you set it up in your radio to be able to stop it mid stroke?
Yes he used the Firgelli actuator. Just put it on the right lever on a DX18. It is proportional.
Old 03-14-2015, 06:30 PM
  #689  
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double post

Last edited by Speed-RCU; 03-14-2015 at 07:10 PM.
Old 03-14-2015, 06:35 PM
  #690  
vertical grimmace
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Cool, thanks. I have a Firgelli on my TA 152. Funny, I was kind of thinking about getting a DX 18 as well, as soon as the black one comes out. You like the DX 18?
Old 03-14-2015, 06:41 PM
  #691  
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Originally Posted by Speed-RCU
http://youtu.be/TlvuQJvG28k A short video of aehaas Mustang gear. Notice the delay between the left and right gear. More scale like.
That is cool. I did not program mine that way. I like the scale sequencing but I don't feel like taking mine apart and reprogramming it. Maybe in the future when I think about putting a 4 blade prop on too.
Old 03-14-2015, 06:45 PM
  #692  
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What would really impress me would be someone putting real cannons/guns on this with airsoft bullets or something . Oh and every 10th round needs to be a tracer round
Old 03-14-2015, 08:00 PM
  #693  
vertical grimmace
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Originally Posted by fhollahan
What would really impress me would be someone putting real cannons/guns on this with airsoft bullets or something . Oh and every 10th round needs to be a tracer round
Why?
Old 03-15-2015, 03:29 AM
  #694  
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why not?
Old 03-15-2015, 03:29 AM
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why not?
Old 03-15-2015, 04:06 AM
  #696  
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Double posted glitch in my last response. Vertical Grimmace: on the guns, my real answer is because that would be fun for me. Just joking around and trying not to be to serious which is my tendency. I would love to see all the mods that builder's are making.
Old 03-15-2015, 06:01 AM
  #697  
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Originally Posted by vertical grimmace
Cool, thanks. I have a Firgelli on my TA 152. Funny, I was kind of thinking about getting a DX 18 as well, as soon as the black one comes out. You like the DX 18?
Speed-RCU has been using mostly Futaba transmitters but has been using and recently got a Spektrum DX 18 version 2. I started on the Spectrum Dx 9. I then purchased the DX 18. I believe the DX 18 is a must-have.

aehaas
Old 03-15-2015, 06:52 AM
  #698  
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I have a couple of 18's, they are awesome. If you want a QQ let me know cuz I'm getting a Stealth when it comes out
Old 03-15-2015, 07:47 AM
  #699  
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Hi all , I have 4 flights on my stang now I love it what a dream to fly. The only problem I've had is with the inner gear doors. Because of me potting the power 360 on it and pulling 140 amps I am going way faster than it was designed to go. So for those of you that have put bigger engines on your mustang I would recommend that you keep an eye on your doors. I am fixing the door now and will find a solution to keep the doors from being peeled out.
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Old 03-15-2015, 03:10 PM
  #700  
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AMA rules forbid RC air craft from firing projectiles.

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