E-Scorpion - Page 3 - RC Groups
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Feb 01, 2013, 12:01 AM
efflux RC's Avatar
Great project Cooler. Looking forward to your progress.
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Feb 01, 2013, 12:06 AM
Do it Right, the first time!
CoolerByTheLake's Avatar
Thanks Gary, You, know it will have the power!
Feb 01, 2013, 12:25 AM
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p901P901's Avatar
How about honing years of experience into one package .
Feb 01, 2013, 01:29 AM
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LuvEvolution7's Avatar
you could also consider the MH series of airfoils. they would fit well in this application.
Feb 02, 2013, 05:35 PM
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Lt599's Avatar
It looks like its going to be a fun build. I love the lines of this jet, will be watching the progress Greg
Feb 02, 2013, 06:28 PM
Do it Right, the first time!
CoolerByTheLake's Avatar
I think so too! Just trying to put together and finalize a "what I need to buy" list.
It just keeps getting bigger! Did run into one snag though, come to fine out the retracts I planned on using are not up to task. Waiting on a PM, on one's I inquired about.

I want to have most of the components "on hand" before I start. A couple of big ticket one's may have to wait a bit, like an ESC and batteries! AlthoughI see CC is coming out witha new line, so maybe there will be some deals on the older ICE models. Save a buck where and when you can. Out of curiousity, I had to see how it will look. The wing cores are over sized, and need to be cut down yet, that's why the rulers are in photo. LE will be on back side of them.

Happened to run across this last night. https://www.rcgroups.com/forums/show....php?t=1261890
Last edited by CoolerByTheLake; Feb 02, 2013 at 06:33 PM.
Feb 03, 2013, 01:20 AM
You know nothing....
Stuart A's Avatar
Nice bench fly.You may need to beef that nose up a touch.........
Feb 03, 2013, 02:53 AM
Do it Right, the first time!
CoolerByTheLake's Avatar
It is, looking a little "flimsy" at this time. The angle of the photo makes the T.E. of wing and stab, " appear closer than they are".
Thanks for checking in.
Feb 03, 2013, 07:28 AM
You know nothing....
Stuart A's Avatar
Some fool once said the camera never lies
Feb 03, 2013, 01:47 PM
Registered User
Which program did you use to draw out your airfoil. Thanks
Feb 03, 2013, 02:02 PM
Do it Right, the first time!
CoolerByTheLake's Avatar
I just have the free Profili2 version. I did find out that you can modify the thickness of the airfoil. When you pull up airfoil Management, select Process and just play with it, see what you can do. Sometimes a window will come up and say you can't do this, just hit continue, may or may not work. For me it has all I need. Have Fun
Feb 03, 2013, 02:46 PM
Registered User
Thanks I will try that. Im in Winnipeg Canada just north of Grand Forks, Hope it warms up
Feb 03, 2013, 03:19 PM
Do it Right, the first time!
CoolerByTheLake's Avatar
Yes, it's been cold here too. Getting tired of -20 in the early AM. Warm here now, 7 above, wild chill -13, but he suns out!! -14 for tonight. Tough on the heating bill.

Your just a stones throw away. Up nortt!
Feb 06, 2013, 01:37 AM
Do it Right, the first time!
CoolerByTheLake's Avatar
Not to much to show (visually), but lots of confirming measurments, etc.
If one can believe the IRS, my refund will in the bank Thurs. Let the ordering begin!! Have done some additional ground work, back in post #36, there was a link to a past E-Scorpion thread. I got a hold of one owners from original release, and he is going to send me some requested info. Should help a great deal.

I did make one purchase this week, some Spring Air main gear. Good to 15lbs!

Final choice on servos, Sorry JR's were not in the program.
HS-85MG+ Mighty Micro--Rudder's
Operating Speed (6.0V): 0.14sec/60° at no load
Stall Torque (6.0V): 48.6 oz/in. (3.5kg.cm)
Weight: 0.80oz (22.1g)

HS-225MG Mighty Mini--2-Aileron, 2-elevator, 1-steering
Operating Speed (6.0V): 0.11sec/60° at no load
Stall Torque (6.0V): 66.65 oz/in. (4.8kg.cm)
Weight: 1.10oz (31g

HS-645MG Ultra Torque-2-flaps
Operating Speed (6.0V): 0.20sec/60° at no load
Stall Torque (6.0V): 133.31 oz/in. (9.6kg.cm)
Weight: 1.94oz. (55.2g)

HS-81 Micro-Retract valve
Operating Speed (6.0V): 0.09sec/60° at no load
Stall Torque (6.0V): 41.66 oz/in. (3kg.cm)
Weight: 0.58oz (16.6g)

Total servo weight—11.56oz!

Did get to draw out projected ducting, this is to scale. The "D" in between, is intake shape. Figures out to be 3.54 sq in. just short of the needed 3.8sqin. Already have new one figured at 3.82sqin, close enough.

Need a trip to LHS, to order some 1/8" 6-ply plywood, perhaps a few other items from Bud Nosen. Good time of the year to buy it around here, cold and almost no humidity= no warping

Hang in there, this build might take awhile!
Last edited by CoolerByTheLake; Mar 01, 2013 at 11:46 PM.
Feb 06, 2013, 02:32 AM
Registered User
p901P901's Avatar
Sounds like its a project .
Did you ever consider under cutting the wing that fits in the fuselage? The wing area around the ducts can be shaped and then reinforced. Then any airfoil could be used outside the fuselage profile.

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