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May 05, 2002, 03:45 PM
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Patrick Plawner's Avatar
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New Video of FO 141 Gnat, Ducted Fan


Hi,


For anyone interested, just added 2 videos of the FO 141 Gnat.

- Take-off and some flying time
- Landing


Go to the Video section on:
http://plawner.net/


Hope to get the complete review soon.
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May 05, 2002, 03:47 PM
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Patrick Plawner's Avatar
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That's how it looks
May 05, 2002, 07:24 PM
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Nice videos. That thing must have tons of power for that type of "handlaunch".

The landing seemed a little bit on the rough side. Was it?

Nice Jet!

Chachin..
May 05, 2002, 08:29 PM

Gnat


Hi Patrick
What power train do you have in your Gnat??? It sure gets on step fast.
Regards
May 06, 2002, 02:59 AM
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Patrick Plawner's Avatar
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Hi,


this is not my jet, so I can't comment on its power settings. I should get its review soon, and update you on.


As for the handlaunch, there is a bungy helping but still, this is a VERY fast jet with the ducted fan/motor combination he put.
May 06, 2002, 03:30 AM
Quote:
Originally posted by patrick421
this is not my jet, so I can't comment on its power settings. I should get its review soon, and update you on.
For sure, it's not a stock Robbe Gnat power system!!! As I've got an unbuilt Gnat still in the box, I'm really looking forward to hear more!!!
May 06, 2002, 04:12 AM
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Yop, it is not stock.


we made fun of Robbe planes at the field when we spoke about this jet, as we all agreed that Robbe planes, we know of, always come underpowered.
May 06, 2002, 08:32 AM
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Quote:
As for the handlaunch, there is a bungy helping
Oh.. okay.

I just couldn't believe my eyes! Still, awesome jet.

Chachin..
May 07, 2002, 02:54 AM
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Patrick Plawner's Avatar
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data on the Gnat config


Just got this.
I will work further on it's complete review but I thought you might want to read this already.


Omri works on electric flying drones, so his comments are always respectfully listened here.


"Hello patrick

The model you took pictures of was modified as follows:

1 - the foam surface is covered with 50 gr. fiberglass and red-pigmented epoxy
2 - control is by elevons coupled to ailerons.[one servo on each side moving the elevator and aileron to the same direction].
3 - the fan is wemotek minifan 480 with pletenberg 200-20-6 motor and 10 cp 1300 cells.
4 - I also built a nozzle into the rear part of the duct with an outlet dia. of 58 mm.
5 - total weight is 1 kg.

this model is a good flyer but took many hors to build. One may save time by covering it with solar film or just painting.

Yours
omri sirkis"


Will add Omri's Email on the review as well, if anyone of you would like to contact him.
May 14, 2002, 03:09 AM
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For whoever interested, I added few more comments from Omri, on the Gnat Review, on my web site.


First time I hear about Tailerons ... Sounds pretty interesting that it even works :-)

If I understood correctly, tailerons mean:

Right rudder coupled with right aileron, with 1 only servo
Left rudder coupled with left aileron, with 1 only servo


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