First New Cubby Frame . Now ZU-DRO

A 75% replica of the original J-3 Piper cub.

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Jean Crous
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Re: First New Cubby Frame . Now ZU-DRO

Unread post by Jean Crous » Tue Jun 12, 2018 4:53 pm

Another two flights made..... :mrgreen: :mrgreen: very nice indeed, lift off at 60mph climb at 63mph @1200-1300fpm. Very nice control harmony, which the other pilot confirmed. Very effective trim tab, which is what we aimed for.
Stall at 42mph...well sort of....it just sits there and mushes down :D
Approach at 60mph feels too fast, I think 55mph my be just right.
Floats a llllooonnnggg time before touchdown , and that with no flaps fitted. I think the next model with flaps and vortex generators may very well have a stall of + - 30mph.
Jean.
What happens to one does not matter, how one deals with it does!
Bushbaby S/N 002 (taildragger)
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Re: First New Cubby Frame . Now ZU-DRO

Unread post by Pilot Dreamer » Thu Jun 14, 2018 11:37 am

Jean Crous wrote:Another two flights made..... :mrgreen: :mrgreen: very nice indeed, lift off at 60mph climb at 63mph @1200-1300fpm. Very nice control harmony, which the other pilot confirmed. Very effective trim tab, which is what we aimed for.
Stall at 42mph...well sort of....it just sits there and mushes down :D
Approach at 60mph feels too fast, I think 55mph my be just right.
Floats a llllooonnnggg time before touchdown , and that with no flaps fitted. I think the next model with flaps and vortex generators may very well have a stall of + - 30mph.
Jean.
Jean, with the flaps and VG's, sounds like she will be a nice STOL machine. Hopefully we can soon send a few to Canada for those "Back Country" fly boys :wink: :D
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Jean Crous
Too Tousand
Too Tousand
Posts: 2585
Joined: Tue Mar 02, 2010 10:10 pm
Closest Airfield: FASX
Location: Barrydale Western Cape

Re: First New Cubby Frame . Now ZU-DRO

Unread post by Jean Crous » Thu Jun 14, 2018 11:49 am

:lol: :lol: Something to aim for.
Jean
What happens to one does not matter, how one deals with it does!
Bushbaby S/N 002 (taildragger)
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HansH2
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Re: First New Cubby Frame . Now ZU-DRO

Unread post by HansH2 » Sun Jun 17, 2018 3:11 pm

Hi Jean, haven't been on this part of FB for a long time so good timing.
The a/c looks good and so do the performance figures. With the aerodynamic
clean up flaps are essential or else guys landing on short strips being lulled
into a false sense of security by a lower approach speed might suddenly
find themselves farming at the end of the runway or forcing it down on
the runway after floating for a long way, especially if the runway has a
marked downslope. With flaps and VG's it should have good STOL performance.
Then all it will need is a pair of Alaskan takkies.
Just confirm you are talking mph in which case putting the knot figures in
brackets would make the numbers even more impressive.
Is DMU still in the plans?
Hans
Jean Crous
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Re: First New Cubby Frame . Now ZU-DRO

Unread post by Jean Crous » Mon Jun 18, 2018 6:51 pm

Hi Hans, yes we are talking miles per hour. And yes DMU will get all the upgrades to the newest model.
I do begin to think that we will be stepping up on the fitting of flaps to DRO and of course DMU and all the other aircraft to follow. I am in agreement with you regarding the float and land too deep on a short strip.
Jean.
What happens to one does not matter, how one deals with it does!
Bushbaby S/N 002 (taildragger)
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