|May 15, 2007, 05:43 AM|
Aeronaut Panther Build from A-Z w/ video
Created because I couldn't find one that showed every step with detail. Found some great info on several threads but not what I needed. I hope you find it helpful in your build.
The proof is always in the video so I'll do that first. I'll then post remarks as to what I'd do different as I post each section of the build. No sense in you making my mistakes.
Here's a copy of Aeronaut's instructions.
Attached are the pictures that are missing from the instructions so you know where to put parts. Click on the Adobe sign.
Here's Aeronaut's site and on the bottom right corner there is a link to a video of the plane taking off from grass. This was what I hoped to duplicate.
A neat movie with the Panther as the featured jet is Bridges at Toko-Ri
I bought the Panther, the HV-85 controller, the Hitec HS125MG servos and a Hercules BEC from www.ductedfans.com
Morris had several tips for me and didn't mind spending some time on the phone to answer my questions.
The Mega 22/30/3 E (E version has lower Kv) from Randy at http://www.dynamoelectrics.com/detail.aspx?ID=1116
Trying to decide which fan to use? Here's some good test data comparing AirPower 90mm fan to the Midi fan. Both good, just different.
I chose the AirPower 90mm fan.
My buddy Dan at Truerc can set you up with the fan and he is in Chicago.
Herb's thread was an excellent source of information and the guys there were helpful with my questions. You'll also find many Panther paint schemes here.
Special thanks to Bob Belluomini and Tom Para for guidance.
|May 15, 2007, 06:12 AM|
Here's the video.
My average take off attempt started out straight and then came across a clump of grass or dried out mud puddle and that would veer the direction of the model and slow it or send it toward rough ground I didn't want to be on. With a nice even surface and decent grass you could expect what you'll see in the good take off video shown after the typical failed one. I've ordered more lipos to get me into a 10S situation instead of 8s and that will likely help get me up sooner also.
My landings are a little bouncy but this jet is still new to me.
Typical take off on uneven surface.
First time getting in the air. More uneven surface delaying rotation.
A nice even takeoff.
Radar speed pass at 115 mph
Little bouncy on the landing.
Decent fly bys with landing.
|May 15, 2007, 07:18 AM|
How I got there.
|May 15, 2007, 07:52 AM|
Pippin Thanks so much for posting the video and thanks for your service!
Anyone who skipped the video, please go back and check it out. You'll be glad you did.
When installing the dowl for the VS;
Center a hole on the VS top equal to the dowl's diameter. Put VS in place on plane and use a pen to mark where to drillon bulkhead. Remove necessary FG and drill small pilot hole then put VS back in place to check the pilot hole is centered with the dowl hole you drilled in the VS. If centered then drill out pilot hole to dowl size.
|May 15, 2007, 08:13 AM|
Upon opening servo cut out I noticed that the support that runs at leading edge of aileron inside wing was not attached to both sides of wing as it appeared to be not wide enough. I added an equal length piece of CF with GG (gorilla glue) smeared on it. Worked well.
|May 15, 2007, 08:36 AM|
|May 15, 2007, 09:50 AM|
|May 15, 2007, 10:15 AM|
For connecting the push rods from the servo to the seperate control surfaces I would highly recommend getting the Graupner "Dual rod connection lock". This device appears to allow you to slide all three rods to the sweet spot and then lock them in place. Makes this all much easier and will save several hours if you are slow like me. I couldn't find it so I went the difficult route.
|May 15, 2007, 10:32 AM|
|May 15, 2007, 12:48 PM|
Chair and cockpit
|May 15, 2007, 01:22 PM|
Finish the cockpit
|May 15, 2007, 01:51 PM|
Power systems. Lots of choices for 90mm fan and motor combo. I bought two to try. Here are the results.
Tested the Airpower 90mm fan on their supplied outrunner (1400Kv) from Airpower and on Mega 22/30/3 E (1050Kv) motors. Same HV85 esc used for both.
They do not provide an inlet lip so this was a naked fan/motor just mounted on my test stand with no inlet or exhaust. Done for comparison.
Airpower 550E outrunner on new 6s 4350 20C Polyquest packs
Thrust RPM V A W
3Lb 14oz 29,011 20.73V 67.1A 1443
xxxxxx 29,411 21.17V 69.5 1471 Pulled my test stand over!
On 8s 2500 25C PolyRC
3Lb 2oz 25,906 28.13V 31.6A 916W
On 8s 5000 25C polyrc
3Lb 7oz 26,990 29.92V 34.6A 1061W
On old 8s 3700 20C Polyquest
3Lb 8oz 27,397 30.13V 35.4A 1079W
All lipos fully charged before test. Fan/motor combos balanced and tested many times to make sure there was no rubbing during tests.
The mega motor combo seems to run with very little vibration and is much quieter. The speed of the fan could be the volume difference. The Amp draw is MUCH less with Mega. Didn't see the motor cross 98F during testing.
The Airpower motor reached 104F during testing. Not really an issue I don't think. The noise level made me deaf for the day. Serious ringing in the ears! Just really high pitched noise. You can go 6s here so perhaps less weight but factor in twice the amp draw and now you need larger batteries.
Tested AP900 on Mega 3E at 9s.
Works great. Here's what I got.
9s 4350 20C PQ packs
4 lbs 2 oz thrust 29,900 RPM, 34.2v, 42.7A, 1495 watts!!!
4 lbs 0 oz 30,211 RPM, 34.06 V, 40.9A, 1418 W
3 lbs 15.75 oz 30,303 RPM, 33.82V, 40.08A, 1403 W
Now tested IN the jet with all ducting. Amps go up by about 2 amps and thrust goes up 6 oz. which is pretty sweet.
8s 2500mah 25C pack
Naked (no ducting) on the stand. 3Lb 2oz 25,906 28.13V 31.6A 916W
In plane 3 lbs 6 oz thrust, 24,937 rpm, 27.49v, 32A, 900 W
8s 4500mah 30C
In plane 4lbs 0oz thrust, 27,173 rpm, 30.34 V, 37.9A, 1172W
8s 3700 mah 20C pack
Naked on stand. 3 lb 8oz thrust 35.4A
In plane 4lb 2 oz thrust 37.5A
8s 5000 mah 25C
Naked on stand 3 lb 7oz thrust 34.6A
In plane 3lb 14 oz thrust 36.2A
Exhaust nozzle at 90% FSA which is 75mm diam.
|May 15, 2007, 02:09 PM|
|May 15, 2007, 02:27 PM|
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