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Old Sep 23, 2014, 01:41 PM
Exodus 4:13
bhoov128's Avatar
United States, FL, Davenport
Joined May 2012
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7mm pinch on that efflux tube...wonder if anything can be optimized on that for some more push
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Old Sep 23, 2014, 01:56 PM
Lori, hey, you're home early
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United States, NJ, Trenton
Joined Jan 2004
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Wow and thanks. The efflux tube steps down from 30mm to 21mm (internally?) then opens to 27mm at the end of the fuselage or do I misunderstand? I ask because I'm thinking of using the internals/electronics /EDF for a scratch build.
Thanks,
Mike
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Old Sep 23, 2014, 02:08 PM
LiPo-Sucker & Airframe EMT
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Charlottesville, Virginia, USA
Joined Aug 2010
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The 21/27mm measurements are the inside diameter and outside diameter, both measured at the very end of the exhaust tube.
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Last edited by pugsam; Sep 23, 2014 at 02:12 PM. Reason: Ben is really slow today..... :-)
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Old Sep 23, 2014, 02:08 PM
Exodus 4:13
bhoov128's Avatar
United States, FL, Davenport
Joined May 2012
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28mm fan, 21mm outlet. The 27mm measurement is the outer diameter of the efflux tube, so the foam has a 3mm thickness.
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Old Sep 23, 2014, 03:15 PM
Lori, hey, you're home early
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United States, NJ, Trenton
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Thank you to both of you for clarifying that. Exactly what I needed to know.
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Old Oct 27, 2014, 05:32 PM
I am GBLynden
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United States, WA, Lynden
Joined Mar 2011
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This is a flight that my buddy John and I recorded yesterday along with the P-38 video a number of you have already seen. The difference is this one ended in a crash when I tried to float in instead of landing under power like I know I should with a plane like this.

Sunny Day Flight and Crash E-Flite UMX Habu 180 DF Ultra Micro BNF with AS3X Technology (1 min 54 sec)
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Old Nov 04, 2014, 01:08 AM
The Last Question
Entropy76's Avatar
United States, UT, West Valley City
Joined Oct 2006
549 Posts
Man the horizontal stabilizers are weak. I reinforced them with carbon fiber strips but then they just break at the root...any tips?
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Old Nov 04, 2014, 04:35 AM
Multifaceted Heli Nut
USA, GA, Atlanta
Joined Oct 2004
555 Posts
Quote:
Originally Posted by Entropy76 View Post
Man the horizontal stabilizers are weak. I reinforced them with carbon fiber strips but then they just break at the root...any tips?
#1: Handle the model with greater care

#2: I used .020" (.5mm) carbon rod along the bottom surface of the leading edge of each h. stab. The rod continued into the sides of the fuse to join in the center. Scotch Magic tape wrapped around the stab leading edge to both protect the foam from damage and to secure the rod to the stab. Works great for me.
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Old Nov 05, 2014, 11:36 PM
I am GBLynden
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United States, WA, Lynden
Joined Mar 2011
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Quote:
Originally Posted by Entropy76 View Post
Man the horizontal stabilizers are weak. I reinforced them with carbon fiber strips but then they just break at the root...any tips?
Mine is stock and even after a couple of bad crashes requiring glue, mine is perfect.

What are you doing to stress it out?

GB
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Old Nov 07, 2014, 03:24 AM
The Last Question
Entropy76's Avatar
United States, UT, West Valley City
Joined Oct 2006
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Quote:
Originally Posted by GBLynden View Post
Mine is stock and even after a couple of bad crashes requiring glue, mine is perfect.

What are you doing to stress it out?

GB
I was putting out in the box so it wouldn't get broken bumped the tail and broke it...
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Old Nov 07, 2014, 05:30 PM
Parkzone junkie
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United States, MI, Grand Traverse
Joined Oct 2008
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Quote:
Originally Posted by Entropy76 View Post
I was putting out in the box so it wouldn't get broken bumped the tail and broke it...
probably 50% of damage to micros happens when putting in or taking out of the box!

-Brian
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Old Nov 07, 2014, 06:08 PM
Multifaceted Heli Nut
USA, GA, Atlanta
Joined Oct 2004
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"Hangar Rash" is the correct term.

By bracing the horizontal stab and not providing any follow-through structure, all bending loads terminate at the inboard end of the reinforcement. Hence, the concentration of the bending is right where it's most fragile.

Be more careful, that's all.
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Old Nov 08, 2014, 12:10 AM
The Last Question
Entropy76's Avatar
United States, UT, West Valley City
Joined Oct 2006
549 Posts
Quote:
Originally Posted by heli-headcase View Post
"Hangar Rash" is the correct term.

By bracing the horizontal stab and not providing any follow-through structure, all bending loads terminate at the inboard end of the reinforcement. Hence, the concentration of the bending is right where it's most fragile.

Be more careful, that's all.
Yep, I've already learned my lesson with the tail.I did glue the stabilizer root and then a bit off glue around the carbon fiber strip I put on gluing it to the body.
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