Wicked powered SR-71 - Page 4

Knife Liddle · Nov 28, 2008, 11:42 AM

looks like there is plenty of volume for 70mm`s to work well. Just depends on how much power and weight the airframe can stand. 3kw would be easy to do with twin 70s if the airframe can deal with the stress and the weight. Should be fun.

Don, your 750w power system at 300w/lb should be awesome.

Does anyone know how many watts the stock rtf system in the video is producing?

I`m playing with using cut down minifan or HET rotors in a Hayeo 64mm housing for a system capable of very high efflux speeds on lower power.

Knife Liddle · Nov 30, 2008, 01:19 PM

Looks like mine will show up tomorrow. Cool!

sanman55 · Dec 01, 2008, 07:44 AM

Don, What a plane, I use to watch it do touch and goes when I worked for lockheed in palmdale california.
Questions:
Are you going to use 2 channels for the motors or put the speed controls on one channel?
How many servos will the esc. handle? I did not see any info on my 40a speed control paperwork on this.
Will you use a seperate bec.?
On some esc. you have to disconnect the red wire on one, and others you do not have to do this. What does your esc. recommend.
Got to have this bird.
Happy belated thanksgiving to all.
Sanford

The Don · Dec 01, 2008, 11:34 PM

Quote:

Originally Posted by sanman55

Are you going to use 2 channels for the motors or put the speed controls on one channel?
How many servos will the esc. handle? I did not see any info on my 40a speed control paperwork on this.
Will you use a seperate bec.?
On some esc. you have to disconnect the red wire on one, and others you do not have to do this. What does your esc. recommend.
Got to have this bird.
Happy belated thanksgiving to all.
Sanford

I am going to run them on a Y harness on one channel. The ESCs have 3 amp switching ESCs, and the ESC manual says they are good for 5 servos. It is listed at the bottom of page one on the ESC manual.
http://donsrc.com/ESC_Manual.pdf

I will disable the red wire on one ESC before putting themonteh Y hrness.

Don

The Don · Dec 01, 2008, 11:44 PM

Here is my exit nozzles I made today. They fit perfect. I am posting a PDF file of them so other can use them. Just make sure when you print from Adobe it prints 100% scale.

Don

The Don · Dec 01, 2008, 11:49 PM

Here is the PDF template and a trial fit.

RemE · Dec 02, 2008, 12:41 AM

Thanks Don! I thought with the wife out shopping, that you'd be out flying by now

I thought I'd have all this free time and ended up dragging all the christmas stuff out, getting lights up......

The Don · Dec 02, 2008, 12:49 AM

Quote:

Originally Posted by RemE

I thought I'd have all this free time and ended up dragging all the christmas stuff out, getting lights up......

I got stuck on Xmas tree duty as well. Weather is wind and snow anyhow so I have a few days. At least I got to maiden the F117 Saturday.

Don

RemE · Dec 02, 2008, 12:54 AM

How does it fly with those odd outlets?? Slow cruzer? I haven't seen any video of them yet.

Edit, saw it on Bananna Hobby, looks like a nice park flyer.

The Don · Dec 02, 2008, 01:28 AM

Here is some video of my F117 from Saturday.

Wicked Powered F-117 Stealth Fighter EDF (3 min 39 sec)

sanman55 · Dec 02, 2008, 07:16 AM

Thanks Don, missed the servo output,. Man thats great, it supports the most servos that I have seen.. Like this esc. , easy to program...
It mentioned a program card, do you sell these?
Good job so far on the sr.. can't wait to get your report on its flight.
I am like a kid in a candy store.............
sanford

sanman55 · Dec 02, 2008, 07:24 AM

Nice job on nozzle... I do the same thing and found some thin plastic I use.Its a kids school paper holder you get in the school section of your grocery store. Its real thin but tough and comes in many colors.
Thanks for the templet.................

RemE · Dec 02, 2008, 11:32 AM

Nice vid Don! The motor just sounds great and it looks like it moves out well!

Are you using a helmet cam? I'm suprised how well it works, nice to be able to hear you comments along the way. So often I've gone out to test something and want it on video but unable to get it due to no available help.

If by chance it's a FlyCam, check out their site here for the just released firmware download, it increased video quality a little and fixed the sound/video sync offset that has been present in the previous firmware versions. (I thought I detected a sound sync issue in your vid).

http://www.flycamone2.com/index.php?id=20&L=3

Knife Liddle · Dec 02, 2008, 04:59 PM

Mine showed up today just like the UPS tracking said it would. As far as I can tell this is exactly the same mold and hardware as the one Don has.

It came with retracts, fans, decals, battery box and radio compartment.

It`s a good fun size. Large enough to get some attention, but small enough to be easy to transport and fly.

Knife Liddle · Dec 05, 2008, 01:32 AM

Don, just a heads up. Double check you CG location. My instructions say 78mm back from the front edge of the motor pods.

The small marks in the wheel well area are 5/8" farther back than that. The small marks DO NOT mark the CG location on my model.

On mine the measured CG is about 1/16" behind the back edge of the rx compartment.

When you get a chance check this measurment on yours. That should tell if they are out of the same mold or not.

Planning to fly my pusher prop version tomorrow.

Nov 28, 2008, 11:42 AM	#46
Knife Liddle Lee Liddle Join Date: Dec 2006 Location: Lewisville, Tx Posts: 2,214	looks like there is plenty of volume for 70mm`s to work well. Just depends on how much power and weight the airframe can stand. 3kw would be easy to do with twin 70s if the airframe can deal with the stress and the weight. Should be fun. Don, your 750w power system at 300w/lb should be awesome. Does anyone know how many watts the stock rtf system in the video is producing? I`m playing with using cut down minifan or HET rotors in a Hayeo 64mm housing for a system capable of very high efflux speeds on lower power. Last edited by Knife Liddle; Nov 28, 2008 at 12:20 PM.

Dec 01, 2008, 07:44 AM	#48
sanman55 Registered User Join Date: Nov 2003 Location: powder springs georgia Posts: 696	sr71 Don, What a plane, I use to watch it do touch and goes when I worked for lockheed in palmdale california. Questions: Are you going to use 2 channels for the motors or put the speed controls on one channel? How many servos will the esc. handle? I did not see any info on my 40a speed control paperwork on this. Will you use a seperate bec.? On some esc. you have to disconnect the red wire on one, and others you do not have to do this. What does your esc. recommend. Got to have this bird. Happy belated thanksgiving to all. Sanford

Dec 01, 2008, 11:44 PM	#50
The Don Wonderfully Wicked Join Date: Jan 2002 Location: Willoughby, Ohio Posts: 7,938	Here is my exit nozzles I made today. They fit perfect. I am posting a PDF file of them so other can use them. Just make sure when you print from Adobe it prints 100% scale. Don Attached Thumbnails Paper template. 32.3 KB · Views: 98 Plastic sheets ready to cut. 30.3 KB · Views: 92 All cut out. Draw a line with a fine tip marker so you know where the overlap starts. 28.8 KB · Views: 80 Place a strip of clear scotch tape on the end.(Sticky side up) 20.5 KB · Views: 92 Curl over and line up edge to blackline. 33.7 KB · Views: 109 All lined up. 29.9 KB · Views: 89 Push down to make the tape stick. 30.7 KB · Views: 108 All finished! 30.9 KB · Views: 105

Dec 01, 2008, 11:49 PM	#51
The Don Wonderfully Wicked Join Date: Jan 2002 Location: Willoughby, Ohio Posts: 7,938	Here is the PDF template and a trial fit. Attached Thumbnails Just need to trim a hole for the wires. 78.7 KB · Views: 197 Here you can see 80% FSA compared to what is supplied. 82.2 KB · Views: 254 Attached Files SR71TAILCONE.pdf (1.5 KB, 91 views) Tailcone template.

Dec 02, 2008, 12:54 AM	#54
RemE Tweaker Join Date: Sep 2005 Location: Corona Del Mar Posts: 2,685	How does it fly with those odd outlets?? Slow cruzer? I haven't seen any video of them yet. Edit, saw it on Bananna Hobby, looks like a nice park flyer. Last edited by RemE; Dec 02, 2008 at 01:07 AM.

Nov 30, 2008, 01:19 PM	#47
Knife Liddle Lee Liddle Join Date: Dec 2006 Location: Lewisville, Tx Posts: 2,214	Looks like mine will show up tomorrow. Cool!

Dec 02, 2008, 12:41 AM	#52
RemE Tweaker Join Date: Sep 2005 Location: Corona Del Mar Posts: 2,685	Thanks Don! I thought with the wife out shopping, that you'd be out flying by now I thought I'd have all this free time and ended up dragging all the christmas stuff out, getting lights up......

Dec 02, 2008, 07:16 AM	#56
sanman55 Registered User Join Date: Nov 2003 Location: powder springs georgia Posts: 696	wireing Thanks Don, missed the servo output,. Man thats great, it supports the most servos that I have seen.. Like this esc. , easy to program... It mentioned a program card, do you sell these? Good job so far on the sr.. can't wait to get your report on its flight. I am like a kid in a candy store............. sanford

Dec 02, 2008, 07:24 AM	#57
sanman55 Registered User Join Date: Nov 2003 Location: powder springs georgia Posts: 696	nozzle Nice job on nozzle... I do the same thing and found some thin plastic I use.Its a kids school paper holder you get in the school section of your grocery store. Its real thin but tough and comes in many colors. Thanks for the templet.................

Dec 02, 2008, 11:32 AM	#58
RemE Tweaker Join Date: Sep 2005 Location: Corona Del Mar Posts: 2,685	Nice vid Don! The motor just sounds great and it looks like it moves out well! Are you using a helmet cam? I'm suprised how well it works, nice to be able to hear you comments along the way. So often I've gone out to test something and want it on video but unable to get it due to no available help. If by chance it's a FlyCam, check out their site here for the just released firmware download, it increased video quality a little and fixed the sound/video sync offset that has been present in the previous firmware versions. (I thought I detected a sound sync issue in your vid). http://www.flycamone2.com/index.php?id=20&L=3

Dec 02, 2008, 04:59 PM	#59
Knife Liddle Lee Liddle Join Date: Dec 2006 Location: Lewisville, Tx Posts: 2,214	Mine showed up today just like the UPS tracking said it would. As far as I can tell this is exactly the same mold and hardware as the one Don has. It came with retracts, fans, decals, battery box and radio compartment. It`s a good fun size. Large enough to get some attention, but small enough to be easy to transport and fly. Attached Thumbnails 73.2 KB · Views: 205

Dec 05, 2008, 01:32 AM	#60
Knife Liddle Lee Liddle Join Date: Dec 2006 Location: Lewisville, Tx Posts: 2,214	CG Location Don, just a heads up. Double check you CG location. My instructions say 78mm back from the front edge of the motor pods. The small marks in the wheel well area are 5/8" farther back than that. The small marks DO NOT mark the CG location on my model. On mine the measured CG is about 1/16" behind the back edge of the rx compartment. When you get a chance check this measurment on yours. That should tell if they are out of the same mold or not. Planning to fly my pusher prop version tomorrow.

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