hi Isaac , thanks for the new pics . I can see the landing gear ply setup but what is the carbon bits for ?? ...electric motor mount ?? Thkx juan

Hi Juan
The carbon bits need to disperse the stress that activated by the landing gear screws to the honeycomb plates.
Electric motor mount - coming soon.

Isaac Najary

Hi isaac

Evry day i am checking here if you added some new pictures and i am learning a lot from them.
From your experiance does the carbon mount will be strong and durable as the wooden mount?

have a nice day...

Hi Montezuma
This is an evolution of the carbon mount which I have in my Oxalys (534 flights) with good success.
It is for sure stronger than the wooden mount, and it is lighter.

Isaac Najary

Hi Isaac , thanks for the reply . If it is not too much trouble could you perhaps go into it with a bit more detail at some stage as to how it is made up where it fits( rough dimensions if poss) so that we can consider doing the same on our planes . Thanks Juan

Hi Juan

You right, Right now it is hard to understand, Wait until you see the assemble in the fuselage and I think you will understand every thing.

Isaac Najary

Hi Isaac,
Thanks for the patience and guidance. Flying in the same field makes my live easy, discussing building details while waiting for our turn to fly. I would like to join the others and thank you for the wonderful stuff that you place on the web. I am half way through your pictures, never been so easy to build an F3A model

Avi

The plan is to remove the wing adjusters (Save 15.6 gram) after the completion of the wing adjustments.
The wing adjusters could be reassemble any time for further adjustments.

Hi Najary,

Just want to add my vote of thanks on this GREAT thread of yours, your attention to detail is simply outstanding!

As I will be starting the build of two ZN Twisters very soon, you have helped me back into the building side of things immensley.

Please keep up the great work and photos,

Kind regards,

Andy.

Hi Andy
Thank you and good luck with the Twisters.

Isaac Najart

Hi Isaac

I saw that you build the landing gear mount from a carbon honeycomb.
Can you please send a link to manufacture web?

best reagards

Benny Abramovich

Hi Montezuma

Here are the materials that I usually use:
http://www.acp-composites.com/

LP-21 1/8" Graphite/Balsa 225g 12" x 12" $28.00
LP-31 Glass/Nomex Panel 1/8" Thick x 12" x 24" $30.00
LP-37 Glass/Nomex Panel 1/4" Thick x 12" x 24" $30.00
LP-40 Carbon/Nomex Panel 1/8" Thick x 12" x 24" $41.00
LP-46 Carbon/Nomex Panel 1/4" Thick x 12" x 24" $41.00
WG-11 .084" Solid Uni-Woven Carbon 8" x 12" $38.00

Isaac Najary

Saving 5 grams

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Hi Isaac,

What is the distance you usually have between the spinner and the fuz - i was thinking 1.6mm, for OS140 anyway.

what do you think?

Thanks
Roly

Hi Roly
I usually make 2.5mm distance (to allow the spinner back plate to bend back 0.5-0.8mm when I fasten the spinner screw).

regards

Isaac Najary

more

Here are the weight data of some parts

more

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Interesting airfoil choice from Christophe on this one.. nearly a 50% highpoint? Anyone know why he did this?

Saving 5.1 gram - replacing the 1/8" steel anti-rotation pin which comes with the kit, with 3mm aluminum rod.

hi nice work and fine pic..
do you have any ide ,, have many gram you have taken out of the kit at this point??
reg Torben PJ

Nice pics and work!
how is the surface off the fuselage on your kit, if i not seen wrong it a fiberglass fuselage?
have you consider to remove the canopyfloor and make a canopy off carbon or fibergals ...this maybe save some more gr!
on my Oxalys (TS Composite) i saved a lot!

Hi Torben

This is a kind of philosophy question (Is sanding the wing sheets Counts ?)
Generally every time I do something to save weight, I take a picture of the scale before and after the process.

Hope it helps

Isaac Najary