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Ohio Combat SRT-10 - - 13 feet wingspan, twin motors, 10S lipo MONSTER!!

Old 08-21-2007, 04:06 PM
  #1  
lmopar69
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Default Ohio Combat SRT-10 - - 13 feet wingspan, twin motors, 10S lipo MONSTER!!

First off, without the help from www.maxamps.com, www.castlecreations.com, www.hobby-lobby.com and www.OhioCombat.com, this plane would not be getting built. A HUGE "THANK YOU VERY MUCH" goes out to all the sponsors for this one.

New sponsors! www.ecubedrc.com and my local hobby shop, Action Hobby in Clarksville Tennessee!

Another new sponsor... www.horizonhobby.com has added a 2.4GHz Spektrum DX7 transmitter and two AR7000 receivers to the SRT/10! Say so long to all the glitching that had initially plagued the SRT/10!

So, Jeremy from Ohio Combat drove down from Ohio to my house in Tennessee on Friday evening to deliver my new plane! Then, he, Dave from Birmingham, and I, spent Sat. morning through Monday evening in my garage building it. We had a blast, sweated a lot, worked long and hard, flew our other planes a little bit, then worked some more, but we didnt quite get the new SRT-10 done.

Just for a little "teaser", how does a 10S powered, twin motored monster sound to you? This thing is going to be a beast and I am dying to get it done!!!

Pictures and more will come soon... you WILL want to see this one!

Laine.

Last edited by lmopar69; 12-19-2007 at 11:18 PM.
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Old 08-21-2007, 07:43 PM
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Will I?

Well, stop teasing and put up some pics!
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Old 08-22-2007, 03:13 AM
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Well, here it is... so far anyway. Still a LOT left to do.

Power system consists of twin Hobby Lobby Atlas 5030/16 outrunners with 18x12 APC props, Max Amps 10S 2P 10000mah lipos and Castle Creations HV controllers. With over 5000 watts of power on hand, it should fly nicely.

Wing span is approximatly 156 inches, yes thats 13 feet !! This beast has roughly 46 FEET of total wing area.

Ready to fly weight is estimated at 40lbs + or - 5lbs

Laine
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Last edited by lmopar69; 12-13-2007 at 08:45 PM.
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Old 08-22-2007, 03:18 AM
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Great flaming buttnuggets, Batman!! Doooooooodddd...that's huge! Beautiful work!
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Old 08-22-2007, 03:22 AM
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Damn Laine, now I really feel like crap for not being able to come up. I wished I could have been a part of this. I hope the guy's understood.

This is sweet. Did Jeremy come up with this idea or is it more of a collaberation?

Anyway, sure looks like you guys pretty much got it mapped out well before hand. Did anyone engineer a good idea for launching it?

Who is producing the motors for this Gargantua (Good name for it) wing? Do they even make electric motors big enough to handle 10C? (yes they do)

Type: Brushless Outrunner

Bearings or Bushings: Ball Bearings
Recommended Prop Range: 32x12
RPM/Volt (Kv): 160
Resistance (Ri): 0.006 Ohms
Maximum Burst Current: 400A (12,000 watts)
Cells: 10 Li-Po
Speed Control: 300A Brushless (Included)
Weight: 2300g (81.1 oz)
Overall Diameter: 100mm (3.9 in)
Overall Length: 110mm (4.3 in)








Who was more hung over come Monday?
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Old 08-22-2007, 03:26 AM
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Yeah man, its big, its cool, its... its... well, its blue right now!

Who's idea? Well, sorta mine, it was the only way I could convince Jeremy to drive his butt down to my house.

As far as launching, we plan to hold it up through the sunroof of my buddys VW Bug and drive as fast as necessary to get it in the air. Unless you have a better idea??

Laine
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Old 08-22-2007, 03:47 AM
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Still not sure how Laine talked me into it,maybe an Army mind melt technique.
I had a great time ,doing what we all like best,working on planes and flying. I feel very lucky to have had the chance to meet Laine and his family as well as our friend from AL- Dave. We have all talked over the phone for a long time working on various projects. I have and will always trust their input because they are not shy when it comes to honesty.

A big thanks to Laines wife Kristy and his kids for putting up with our long hours. Great food ,room and board. I coulndt have asked for a better weekend away from home with great friends.

Thanks ,Laine,Kristy,kids- Dave
Jeremy
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Old 08-22-2007, 04:24 AM
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It was a great weekend. Nice to put a face to the name finally after all the times we have emailed back and forth and spoken on the phone. However, Im beat. I should have put AC in the garage. 100+ weather sucks.

Anyway, the SRT-10 will acctually have tricycle retracts with a steerable nose gear. They are being custom made specifically for this plane and they should be pretty slick.

Laine.
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Old 08-22-2007, 10:24 AM
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Geez, Laine.......compensating for something?

That things HUGE!
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Old 08-22-2007, 03:14 PM
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Originally Posted by Twizter68 View Post
Geez, Laine.......compensating for something?

That things HUGE!
Well.... you know...
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Old 08-23-2007, 04:57 AM
  #11  
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Originally Posted by lmopar69 View Post
Well, here it is... so far anyway. Still a LOT left to do.

Power system consists of twin Hobby Lobby Atlas 5030/16 outrunners with 18x12 APC props, Max Amps 10S 2P 10000mah lipos and Castle Creations HV controllers. With over 5000 watts of power on hand, it should fly nicely.

Wing span is approximatly 156 inches, yes thats 13 feet !! This beast has roughly 46 FEET of total wing area.

Ready to fly weight is estimated at 40lbs + or - 5lbs

Laine
i want to see this thing fly!! send me the video when you are finished with it!
[email protected]
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Old 08-23-2007, 02:13 PM
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Originally Posted by wased0 View Post
i want to see this thing fly!! send me the video when you are finished with it!
[email protected]

I want to see it fly too! I can promise you that the maiden and many other flights will be on video and posted here. I just hope I get it finished sooner than later!

Laine.
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Old 08-23-2007, 10:49 PM
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I just hope I get it finished sooner than later!
Are you craming for a SEFF debut?
(that would be a crowd pleaser)
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Old 08-23-2007, 10:56 PM
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Yeah, pretty much. I want it DONE by the Fall Fly in at Hodges. Plus, that is the weekend of my birthday, so it'll be a double wammy.

You coming to Hodges for that weekend?

Laine
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Old 08-23-2007, 11:17 PM
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You coming to Hodges for that weekend?
Hodges? Who what when where?
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Old 08-24-2007, 01:17 AM
  #16  
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Hodges Hobbies near Americus, GA has SEFF there, plus, in the fall they have the Annual Fall Fly In also. This year, it is on the same weekend as my birthday, 30 September. I plan to have the SRT-10 done so it can fly there.

Laine.
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Old 08-24-2007, 01:26 AM
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Well then it would be almost....Happy Birthday Laine..
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Old 08-24-2007, 01:27 AM
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Originally Posted by lmopar69 View Post
Well, here it is... so far anyway. Still a LOT left to do.

Power system consists of twin Hobby Lobby Atlas 5030/16 outrunners with 18x12 APC props, Max Amps 10S 2P 10000mah lipos and Castle Creations HV controllers. With over 5000 watts of power on hand, it should fly nicely.

Wing span is approximatly 156 inches, yes thats 13 feet !! This beast has roughly 46 FEET of total wing area.

Ready to fly weight is estimated at 40lbs + or - 5lbs

Laine
Wow!! What a great job....and BIG!
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Old 08-26-2007, 03:28 PM
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Thanks Bruce. Yesterday I got all the servos installed and put alum. plates on the bottom side where the motors go. Today, I will finish up some soldering and put the plates on the top for the motors.

Its coming along nicely. Still a bunch more sanding and smoothing to do and Im waiting on the landing gear so I can finish up the details there.

It still should be ready by the fall fly in at Hodges at the end of Sep.

Oh, and thanks for the early happy b-day!
Laine.
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Old 08-27-2007, 01:23 AM
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I know yer busy on the wing Laine, but I'm just curious.

You must be putting some serious hi torque servo's in this monster?
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Old 08-27-2007, 02:06 AM
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I got some more work done on the SRT/10 today. The alum. plates at the trailing edge where the motors mount are now on, both top and bottom. Then after that, I finished up all my servo extensions. This pig has like 25 feet of servo wire in it!!

Also, I figured I would include a pic of the motors Hobby Lobby sent for this one. Two Atlas 5030-16s and they will run on 10S swinging 18x12 props.

Laine.
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Old 08-27-2007, 02:12 AM
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Originally Posted by Major Danger View Post
I know yer busy on the wing Laine, but I'm just curious.

You must be putting some serious hi torque servo's in this monster?
Acctually, we decided to use multiple servos on each control surface. We are doing this for a couple reasons. One, to make sure the elevons dont twist under load the control horns and servos are nearly evenly spaced on the control surface. Two, we dont need monster torque servos since there will be two on each control surface to share the load.

Also, kinda a neat thing, since the wing comes apart and it has elevons on the outside wing panels, plus elevons on the inside main part by the motors, I will be using one of my mixes on my radio to work like "split flaps". So, basically, when I turn the knob on my TX, the inside elevons (closest to the motors) will go up and the outside elevons will go down. That way I can bring it in and land it slower. And since the inners go up and the outers go down, there SHOULD be no change in pitch attitude with the "flaps" deployed.

Laine.
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Old 08-29-2007, 01:25 AM
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After nearly two hours yesterday messing with the TX (Eclipse 7), I FINALLY got the main part of the mixing figured out. What a pain! Now If I can just get the nit picky stuff I want working I'll be good.

The left wing panel has 2 servos for the 36" wide control surface. Those are plugged into ch.1 on the Berg 7. The inboard control surface is 20", it has one servo plugged into ch.6

The right side wing is the same, except they are plugged into ch.2 and ch.7.

I used 4 mixes to mix the following:
ch.1 w/ ch.7
ch.1 w/ ch.6
ch.2 w/ ch.7
ch.2 w/ ch.6
This got my elevons all moving together in the corresponding stick movements. So, now will be "flyable".

Now I want to set up my "Land" feature so that when I flip that switch, the inboard control surfaces (ch. 6 and 7) go "down" about 30 degrees, and at the same time the outboard control surfaces (Ch.1 and2) go up about 15 degrees. Kinda a "split flap" airbrake idea to slow it down.

Geesh, this is going to be the toughest radio setup I have ever had to do...

Laine.
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Old 08-29-2007, 01:37 AM
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Damn Laine, Gimme your snail mail addy and I'll definately mail you a box full of Advil.

I just got my new 2.4ghz 6 channel radio and I have to mix/slave (whatever) channel 4 to 5. Rudders and stearable nose wheel. Didn't work on my first attempt. But then again this is new to me. I have the advil already set up for another go at it tomorrow.

Take a deep breath pal and attack that programming issue head on. You da man, you can do it. Make us all proud.

THANK YOU LAINE (for taking on this project. I'm all eyes and ear.....well I'm all eyes ok)
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Old 08-29-2007, 03:17 PM
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I might need that Advil...

I'm getting it figured out slowly. Im sure I will get it right soon. But its going to take a "pre-flight checklist" to make sure I have all the switches in the right postions prior to flying.

Good luck with yours Major.

Laine.
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