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Feb 27, 2019, 12:11 PM
Pro Hoarder
turbonut's Avatar
Looking good so far
Latest blog entry: In flight
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Feb 27, 2019, 04:19 PM
J40
J40
Airplanus Erectus
Thread OP
I have not Amp. Maybe toad has some data. APC 7x4 is around 13k or so if I remember. Will check it and post up data when it gets a bit closer/warmer to being done. Warmer would really help about now.

Warm enough to make maple syrup here now. Wrapped up in that right now. Sugarin!
Feb 27, 2019, 04:23 PM
J40
J40
Airplanus Erectus
Thread OP
Thanks turbo! Trying to make it interesting for everyone. A variation of the factory kit. Can't wait for ya to get back on the P-39.
Feb 27, 2019, 04:35 PM
Registered User
toad007's Avatar
Beautiful planes. I dont have any notes on that Prop, Just experience. The pylon props I collected rpm's data on different engines, But for a sport engine, I flew the heck out of the 7x3's on the .074 and the OS .10's . It worked the best for me at my Altitude for that disp range.
Last edited by toad007; Feb 27, 2019 at 04:36 PM. Reason: spelling and punctuation as usual
Feb 27, 2019, 06:01 PM
J40
J40
Airplanus Erectus
Thread OP
Thanks toad. Hope your enjoying them. Been wanting to try the 7x3 APC. Time to get a couple on the way. Almost time for me to go flying. Just a bit warmer.
Mar 04, 2019, 03:42 PM
J40
J40
Airplanus Erectus
Thread OP

More progress


Building the gear doors right now. Hope to be taxi testing within the next couple weeks!
Mar 04, 2019, 05:45 PM
Pro Hoarder
turbonut's Avatar
Cool..ready for combat!
Latest blog entry: In flight
Mar 04, 2019, 06:02 PM
Registered User
That bird looks absolutely awesome. Great job on a great kit/plan.

Mike
Mar 04, 2019, 06:53 PM
J40
J40
Airplanus Erectus
Thread OP
Glad you guys like it! It's been a fun build.
Mar 04, 2019, 10:10 PM
Nitro User
1/2A Nut's Avatar
Geez too good to risk in the air I would get some good flying vids and park it in hanger lol.

Mar 05, 2019, 09:26 AM
J40
J40
Airplanus Erectus
Thread OP
Was hoping you guys would like it. It has a lot of cool features built into it. I'm crashin that baby [email protected]!!! It's going to fly a few seconds or maybe a long time. Please be patient, it's still got a ways to go.
Mar 05, 2019, 09:29 AM
J40
J40
Airplanus Erectus
Thread OP
The wings look pretty straight...... fairly so.... uh oh! pilot jitters.....
Mar 06, 2019, 08:38 AM
Nitro User
1/2A Nut's Avatar
Prop clears good, did the kit come with those stickers?
Last edited by 1/2A Nut; Mar 06, 2019 at 08:45 AM.
Mar 06, 2019, 12:17 PM
J40
J40
Airplanus Erectus
Thread OP

Original kit contents (pretty close)


Hate to send ya back to the beginning so I'll refresh a bit; the plane you see was cut from my scrap box pretty much depleting it's 1/2A size scrap crap that I guess I hoarded over the decades? Argh! Scrap box is still very full but a plane with larger pieces needs to be cut out of it next.

Pictures below show a typical factory kit plus and minus a piece or few..... You can see the stickers that come from the factory Amp. I got another set from a vendor. It has been clear coated. Probably going to make the triangle warning stickers smaller. Feel like those are for a larger scale. I left out quite a few factory pieces I already had cut/decided they were overkill and switched to smaller thicknesses to run 6 channels and not weigh 30 ozs. Added to the factory kit box. That kit was obtained from the Group classified. Hoarding the kit I guess.

Pictures of the the prop clearance. The beginning of the build I went over moving the firewall back to use the Norvel .074 and still have good prop clearance instead of sticking out an inch past the cowl. I like how the prop clearance came out.

As it's freezing today here (8 degrees this morning) I have pulled the gear struts to machine flats and finalize the landing gear in prep for taxi testing. Snow is everywhere so I've been teaching myself to tap the trees and make Maple syrup. Rolling tests are coming. Snow will have to go away. Thinking about adding some more dulling of the paint and trying charcoal type stuff to give it some exhaust marks. Should have a final weight soon.

Some things I wish I would have done different.
1. Split flaps
2. Different clear coat. This clear coat raised my paint in a few spots. However, I like it looking beat a bit. Its gonna look cool with a good coating of dust and grime.
3. Scale elevator
4. Horizontal stab forward a bit more to scale position. I moved it some. We'll see how squirreley it is. Might be pitch sensitive.
5. Larger diameter exhaust tubing just for fun!
6. Been more patient?
7. Smaller/lighter aileron servo's

3.
Last edited by J40; Mar 12, 2019 at 05:35 AM. Reason: adding to build data


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