Viewer Request Speed Challenge

by FliteTest | July 29, 2013 | (37) Posted in Challenges

Josh and David take on your request for a scratch build speed challenge!

David is flying a Spitfire, modified with it's wings chopped off.

David is using a huuuuge motor, the NTM 35-36A 1800Kv motor from Hobby King, with an 8 x 8 prop.


Josh is flying a new scratch build designed called the FT Versa Wing.


Both airplanes are equipped Airspeed Microsensors from Eagle Tree Systems. 
This Airspeed System features Pitot tube that records the actual airspeed and will record the fastest speed and display it on the led screen. The Spitfire David is flying is one that was featured in the Review Episode. In the background you can see the FT Versa wing and a few other wing setups that Josh will be testing out later.

The Spitfire is FAST! It's excited to see a scratch build plane maneuver so well at such speeds.


This speed challenge is a response to viewers requests to see David and Josh fly their fastest scratch built designs.

Time for the FT Versa wing to go up. After a few slow passes, Josh decided to attach David's Power Pod.

The Versa wing was fast as well! But it handled great!

The FT Versa Wing was designed to be fast but also to be versatile in how it can be setup.


It can be setup to be a pusher, or FPV plane, a combat plane and more!  Stay tuned for more on this wing!

Special thanks to Eagle Tree Systems for sending out the Airspeed Microsensor!
You can learn more about these microsensors and other cool stuff that they have available here:
www.eagletreesystems.com

 

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COMMENTS

RCmaniac on July 29, 2013
awesome designs by both of you!
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RPS-13 on July 29, 2013
How many lipos do you guys get through?
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jordy123 on May 30, 2016
How many wings do you guys fold?
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RotateB4TheEnd on July 29, 2013
Looks like the wing will be one of the next speedbuild kits!
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ERAU1983 on July 29, 2013
There should have been a caveat for the fast speed without catastrophic structural failure. Great video, and very entertaining as usual!
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zygote on July 29, 2013
Sweet.
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Fire1 on July 29, 2013
Why not a gliding challenge?
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cloud9photos on July 29, 2013
nice stable wing!
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MikeI on July 29, 2013
Want those wing plans!
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Wizguber on July 29, 2013
The crash and the battery fire at the end was the best ! Another great episode - thanks guys.
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patrol7 on July 30, 2013
I can't wait for the Wing speed build kits ;-)
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Bur_Lion on July 30, 2013
I agree! Also really want to buy one.
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tramsgar on July 30, 2013
Great one, lots of fun - thanks! Can we see a motor renovation quick tip where David is cleaning out the powder from the extinguisher?
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sailorJohn on July 30, 2013
Speed == Flutter Fun video!
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Bernoulli on July 30, 2013
Looking forward to the vera wing plans.
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AdeptM on July 30, 2013
One of your most enjoyable episodes to date. Really looking forward to building one of the wings.
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Adventure rc on July 30, 2013
David, you have unwittingly created a spitfire mk12 by cutting off the wingtips!

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Adventure rc on July 30, 2013
And on top of that there is a project that I have been thinking about for a while, ever since i saw the 400mph model jet and the 400mph model glider on youtube. And this episode was the perfect time to tell you about it, since I will never have the resources in the forseeable future to complete this challenge, I present it to you.
My challenge, which I wish you to complete, is to build the first model plane to get to mach 1!
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rcspaceflight on July 30, 2013
Probably only possible if it's more of a guided missile than a plane. And it would have to be launched from a plane that is already going fast. Also using gravity to help might be the only way to get even close to 700mph.
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Adventure rc on July 30, 2013
It may have to be a ROCKETPLANE!

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UpSideDownRC on July 30, 2013
Can u guys make a EDF swappble ?
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joann69 on July 30, 2013
Great video guys, so much fun to watch. Please post the plans for the FT Vera Wing ASAP since I am looking for something new to build.
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Crashpilot1000 on July 30, 2013
That was a nice episode! I wonder what airspeed Joshs' big fueled plane has. Perhaps you have a chance to attach that logger to that plane as well? I like the convetional "Spitfire" design more than the futuristic delta wing but that's only a personal taste. The last part was also great. Putting a foam plane nosedown into the ground with good speed showed less damage than expected by me. I thought it would disintegrate immediately. BTW: Is there a better way to put out an electrical lipo fire? The conventional approach didn't work too well. Is there some chemical (hopefully not poison) available that stops lipo fire?
Cheers Kraut Rob
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thunder46350 on July 31, 2013
A Purple-K fire extinguisher should take care of a LiPo fire...
http://en.wikipedia.org/wiki/Purple-K

Also, baking soda would probably work well to smoother the fire, but I'm not 100% sure on either of these, it is simply an educated guess...
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Adventure rc on July 31, 2013
li-po fires are self-oxidising a.k.a nigh on impossible to put out.
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jhitesma on July 31, 2013
Yep, they're their own fuel and oxidizer. I haven't had any fires...yet...but I pretty much figure if I do the best bet is to just have somewhere to let it safely burn itself out.
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Dino on August 25, 2013
what do you guys think about a bucket of salt water? would that do the trick ?

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Crashpilot1000 on July 31, 2013
@thunder: Thanks for the link to the Puple K extinguisher - that looks promising. Perhaps it is a good idea to have that thing around at the airfield.
@Adventure rc @Jhitesma: Yes, that is exactly what I think, perhaps Thunders extinguisher is something to try out as well. Perhaps a bucket of Sand might help as well - so it will burn contained in a pile of sand.
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lracnolip on July 31, 2013
Great show, looking forward to the wing build
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Billbo911 on July 31, 2013
Other than, "Excellent video!", I only have one other comment and it isn't original. When can we get access to the plans for the wing? Heck, even access to the Speed Build kit would be awesome!
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aangeles123 on July 31, 2013
i agree ,do you guys can give us a date? i have on standby a order just because the ft versa...
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liveyourdreamsRC on July 31, 2013
looking forward to the versa! You should make it a rocket plane! Or make another scratch build rocket plane!
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g-rod55x on August 1, 2013
hey guys how about an airsoft scratch build planes and do a dog fight
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Bbjen on August 1, 2013
I am looking to make a fpv wing, when are those plans going to be released?
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Auxiliarypower on August 2, 2013
One of the best ones yet guys!
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sailorJohn on August 4, 2013
I'd like to thank JOSH and CHAD for teaching me how to build foam planes ,keep the new designs coming. Maybe something in the size range between a supercub and a minicub using 5gr servos that would fly well outdoors or indoors.
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Dino on August 25, 2013
can I get full specks sheets for both plane ? Motor, battery, ECU. Thanks
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walkerr on September 30, 2013
I'm curious about the same! What were the setup of your two planes, Josh and David? And by the way: Thanks from Norway for setting up a great both entertaining and educational show :-)
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fretsman on November 20, 2013
Hey guys! I am building a scratch build of the FT Versa wing and my goal with this wing is to fly fast. I was wondering if you could share the setup used on the Versa wing to get the top speed. I know from the video that Josh swapped out power plants with David and that his setup used the NTM 35-36A 1800Kv motor from Hobby King but I was wondering what prop, speed controller and battery was used on the Versa wing to get the top speed. Anyone??
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Miataguy on January 29, 2014
he also said he was using an 8x8 prop i would also be interested in battery...3s...4s? and esc...
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crow57 on October 17, 2014
Your indicated airspeed needs to be corrected to true airspeed, to account for air density differences due to altitude, barometric pressure, and temperature. Based on your shorts and t-shirt attire, it looks like it was a warm day so I'm betting the true airspeed of the Spit was closer to 122. Here's an online calculator for true airspeed - http://indoavis.co.id/main/tas.html
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Viewer Request Speed Challenge