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Author Topic: 50% Hempel Cub  (Read 19400 times)

selleri

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50% Hempel Cub
« on: April 14, 2013, 03:18:35 AM »
Helping a mate with this one.

BIG box!


33% Cub wing, not clipped.


33% fuselage.


After too many weeks working out of the country the owner came home to all this stuff... and a smoking credit card!  ;)


Came via Bob's Hobby Center down in Orlando except the wires and plugs on bottom left.


First job, cutting into the stab for the elevator servos.


Bit tight!


But in they went.


Ended by gluing in the hinges. Next up, control linkages, then rinse, lather, repeat!


When we have more than one servo per control surface it pays off if you try to select servos that are close to each other. It doesn't hurt to have 10 servos to try and pair together either!


Servo wire yards are starting to pile up!


I'm pretty sure the wings are bigger than the lower wings on a full size Pitts!  :cool:


Studs for the ailerons.


Nice to have the Powerbox to help with setup and power distribution. Doesn't hurt if you have Futaba setup that you can get 14 channels out of this baby just by adding two 3 channel SBUS Rx's. I'll settle for 4 satelites and Spektrum in this case.


Not getting smaller!


Elevator ready to go, did I mention how much I like syncing servos via the Powerbox.


Side and down thrust, we're picking the DA-170 up from the post office on Monday. Has just been run in by the previous owner over in the UK.
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andrew wallace

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50% Hempel Cub
« Reply #1 on: April 14, 2013, 18:22:05 PM »
WOW that's one big cub  :clap:  :clap:
what size of engine goes up front
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selleri

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« Reply #2 on: April 14, 2013, 18:25:06 PM »
DA-170
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erwan

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« Reply #3 on: April 14, 2013, 19:26:28 PM »
A friend have the same one , it's fly very well
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La mouche qui pète ..

selleri

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« Reply #4 on: April 15, 2013, 01:57:49 AM »
Good to hear!
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selleri

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« Reply #5 on: April 16, 2013, 23:27:48 PM »
The engine has been installed.


The owner pondering about the standoffs!
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selleri

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50% Hempel Cub
« Reply #6 on: April 23, 2013, 02:03:07 AM »
We need few meters of wire for the tail.


Getting there.


Hmmmm...


Big tail, no not on the dog silly.


10 meters of wire just for the elevator and we still need to wire seven servos and one kill switch.


Now we know.


Rudder was made removable.


Even more wire, six more, close to ten if we count the extensions in the wings themselfs. Three more servos and a kill switch left to wire!


Future home of the Powerbox.
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selleri

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« Reply #7 on: April 25, 2013, 21:51:48 PM »
Kill switch and throttle servo in place.


Check light for the kill switch.


With this many wires we realy need to be able to tell them apart.


Powerbox and Multibox in place.


Wing struts being attached.


Voila!
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Fred

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50% Hempel Cub
« Reply #8 on: April 30, 2013, 12:39:21 PM »
As usual, very neat job!  :clap:
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selleri

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« Reply #9 on: April 30, 2013, 12:49:53 PM »
Thanks!
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selleri

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« Reply #10 on: May 01, 2013, 01:38:53 AM »
Not too bad!  ;)


Standing on its own legs for the first time! :)
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selleri

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« Reply #11 on: May 12, 2013, 05:23:31 AM »
Adding the windows.


What ever it takes...


You don't lift this one with your thumbs!


PULL!


This much was needed to level her out.


2.8kg of quality steel but we'll reduce it by moving it further front.


Cannisters in place.




Cutting the cowl.


About that CG...


Perfect!
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selleri

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« Reply #12 on: July 02, 2013, 03:11:57 AM »
The much needed nose weight has been installed.


Front window getting stuck.


Final touches on the exhaust.


Hmmm, the ceiling is a bit low isn't it!?


Out in the daylight for the first time.


Inside a trailer.


Not much else you can fit in compared to what it can take.
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selleri

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« Reply #13 on: July 02, 2013, 03:17:43 AM »
The big day finaly came on Saturday, I had the pleasure of handling the maiden and it flew brilliantly. Not sure about the performance on the DA170 as this is a big draggy airframe so no comment on the suitability of towing glass slippers with this one, at least not with the homemade exhaust system.

[youtube]http://www.youtube.com/v/K1tKgNKGZBs[/youtube]

Better to have some helpers to do the assembly.


Getting closer.




And up she went.


The owner pretty happy after getting his thumbs on the sticks.


Fringe benefits of having a large model!  ;)
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selleri

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« Reply #14 on: July 02, 2013, 03:26:28 AM »
We also had a great day on Sunday so I'm including some media from that too.  

Pinky shows up at 1:56 and the Cub at 4:50.
[youtube]http://www.youtube.com/v/5Df_UE316zw[/youtube]

El grando planos.


The K8B pilot is finaly giving tows!  ;)



:cool:


Good to have a shelter from the sun!


Pinky used to be considered pretty big not so long ago!


Can't go wrong with the classics!


The Hempel Cub.




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