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Jul 22, 2010, 03:41 AM
Post # 20 million
Kev.au's Avatar
I look forward to you putting the new Zephyr through it's paces, same goes for Ezuhf.



Cheers, kev.
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Jul 22, 2010, 03:54 AM
Zephyr 66" Blunt
mark hitchman's Avatar
Quote:
Originally Posted by klique
3mill lam film and proper sparring is lighter than the riteweave and monocoat.
we only use 10 mil under the belly.

ck
When you say 3 mill and 10 mill what is that exactly?

Thanks

Mark
Jul 22, 2010, 05:42 AM
Registered User
Gree's Avatar
Thanks for doing this thread Trappy. I have been thinking to get a really speedy plane for FPV, and this just might be the ticket. Looking forward to seeing the actual build...
Jul 22, 2010, 05:58 AM
Crashomatic
CrashMeUp's Avatar
Mark, I believe this is 10 millimeters (I'll be quickly corrected if I'm wrong). If i understand, they use bigger lam film for the bottom.

It sounds like there is no fiber at all anymore ?

Instinctively I would put some fiber around the motor mount, at the front V, and on the belly especially under the areas with equipment where the foam is thin.
Then sand a bit so that once laminated it looks all flush

But maybe the 10 mm film is strong enough to replace the fiber (?). That would be quite interesting.
Jul 22, 2010, 06:02 AM
Suspended Account
trappy's Avatar
the 3mill laminate is certainly strong enough to replace the glass, if you take into account the huge contact surface with the wing.

10 millimeters is a little too much I'd say 10mill means 10 millionths of an inch or something like that. the 10mill thing is less than half a millimeter thick. the 3mill is even thinner than paper.

I will not need to glass the motor mount. the way I build it it's already epoxied to the main wing spars, much to the delight of my neighbors (makes the plane twice as loud )
Jul 22, 2010, 06:10 AM
Zephyr 66" Blunt
mark hitchman's Avatar
That's good I was hoping it wasn't millimeters. Any idea of the wing loading at 2kg?

Thanks

Mark
Jul 22, 2010, 06:14 AM
Suspended Account
trappy's Avatar
not sure. I'd guess about 12 - 15 oz./sq. ft.
Jul 22, 2010, 06:39 AM
Crashomatic
CrashMeUp's Avatar
Yes you're right trappy, I just woke up and figured 10 mm as if it was 0.1mm for some reason, lol, I'm a fool. 10mm should be real strong (and look like a box)
Jul 22, 2010, 07:57 AM
Flying with the eagles
etman's Avatar
1 mil = 1 thousandth of an inch = 25.4 microns = 0.0254 mm
3 mils = 0.0762 mm
Jul 22, 2010, 08:07 AM
Suspended Account
trappy's Avatar
thanks. looks about right that width.
Jul 22, 2010, 10:34 AM
Mum is the word!
Ya you and karl have had some good innovations.

I dont really like the curved spar method on hotwire cut wings it always pushes and distorts the TE and washout a bit .
On the fast heavier non combat wings they really needs to be true and strong due to the weight,the internal spars seem to do this better for my stuff.
I think the combat lite slopers do good with the arc ribbon for durability and flexibility in combat.

Every one has there own methods

I do like the lam film in the 3 mil ,it makes it very tough and rigid, the 10 mil works great to compliment it for rough landing zones too.

Ck
Quote:
Originally Posted by Daemon
Ya, that's what I would expect, which is why I couldn't quite figure why he was going from a heavy build, to an even heavier build, but it's just the gear as he explained above.
Good quality curved ribbon spars top and bottom can do absolute wonders for
stiffness (might surprise you to know who was the very first person to use them that
way in a chevon wing).

ian
Jul 22, 2010, 12:00 PM
Registered User
HI everyone,
Subscribing to this thread.Trappy how does the wing handle windy condition?.I have just crashed my foam plane and I 'm a bit fed up with foam.I want something strong and can handle 20 km wind.

Anthony.
Jul 22, 2010, 12:04 PM
Suspended Account
trappy's Avatar
Anthony, she handles 20km/h with ease. Search for "FPV Rage" on Youtube, that flight was done in 30-50km/h winds.
Jul 22, 2010, 12:18 PM
Registered User
Trappy,
That looks promising.i think I'll make the jump into wings shortly.$200 is that with shipping?.

anthony.
Jul 22, 2010, 12:18 PM
Suspended Account
trappy's Avatar
yes, but not sure if they charge extra for shipping to DODOLAND klique is in this thread, you'll need to check with him via PM. he makes the kits.


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