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Feb 22, 2008, 10:00 AM
Ming's Avatar
Sleedo

Good idea, I may add one more addition rudder part on the tooling.
Would you please send me a photo of your rudder?

Ming Lou
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Feb 22, 2008, 10:40 AM
The Predator
The Predator's Avatar
Placing the pre-moulded in CF wing spars perfectly " In Line" so that a good solid joiner could connect the two would be HUGE! and really make building a PERFORMER ALOT easier!
Haveing the wiring tunnels from the tail to the nose run perfectly straight would help too. Then installing a CF longeron would be easier as well.
I MUST SAY, it does fly well now, making it a Fast ship and an EASY building ship is the new challenge!
Feb 22, 2008, 05:50 PM
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Sleedo's Avatar
Quote:
Originally Posted by Ming
Sleedo

Good idea, I may add one more addition rudder part on the tooling.
Would you please send me a photo of your rudder?

Ming Lou
Ming, here is a picture of the rudder, as you can see I was not careful when I cut it away and found that I need to remove material from the fin to allow full deflection. I rushed to finish in time to fly the maiden and I need to do some more work to make it nice. It is functional but not as clean as I'd like.
Feb 23, 2008, 06:51 AM
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ENGINETORQUE's Avatar
Hi MING

Just finished putting the little Fox together - will post my rudder pic up soonest

Couple of points

The tunnels for the cables - they need to be bigger to let servo plugs be pulled through, then the model can be taken apart once finished - I have used a Dremel to open these out

I have also put a slot down the inside for the Aerial (Antenna)

You should make clear in the instructions that Ordinary CA (not foam safe) is good for EPP

The tooling needs to include holes for the magnets for the canopy fixing on the fuselage

PACKING - important - DON'T tape the wings together in the box - mine now have wavy trailing edge's where they were taped together

I'll test fly her later today or tomorrow, done no mods other than the rudder addition, so she's light!

Steve
Feb 23, 2008, 06:58 AM
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ENGINETORQUE's Avatar
seeing a lot of folks putting powerful (pro-rata) servo's in this thing - really not needed - I've used an old Futaba 148 on elevator as it helps with the balance, but my rudder and ailerons use Blue Arrow sub micro's (same as my Alula) and they are plenty.

Caveat - that's IF you build standard - start beefing up and the model will be faster and land faster - standard, this one ought to be a hand catch job on the right day - I'll let you know.

Spoilerons - any point?
Feb 23, 2008, 07:06 AM
Not a Doctor
me_wantee's Avatar
Quote:
Originally Posted by ENGINETORQUE
Spoilerons - any point?
I use em on mine. When active it comes down almost vertically when there's a bit of wind.
Feb 23, 2008, 07:10 AM
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Sleedo's Avatar
I found that spoilerons really helped the plane descend predictably and slow nicely with added AOA. Mine flew at 18oz and was fairly quick even in the light winds we had for the maiden so although not necessary I was pleased with the effectiveness of the spoilers.

If you got 'em, why not use 'em?
EB
Feb 23, 2008, 09:24 AM
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ENGINETORQUE's Avatar
OK - I'll program them in then

thanks for the advice
Feb 23, 2008, 09:53 AM
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ENGINETORQUE's Avatar
what's the concensus on balance - I've a 4 cell AA pack up front and it seems about on the money?
Feb 23, 2008, 02:32 PM
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Sleedo's Avatar
right on the molded in spar worked fine for me.
Feb 23, 2008, 09:07 PM
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Daemon's Avatar
I still think most of ya will regret using sub micro servos eventually, but we'll
see. Since my wing is covered, cutting through the covering to replace the
servos got annoying real quick.

Yes, I use spoilerons tied to the left stick in landing mode and they're quite
effective. I've also got left stick elevator trim in non-landing mode, and
left stick high rate roll like I do on my planks, because I have no rudder.

My CG is a tick under 2". The horizontal stab has some negative
incidence so I carry some visible downtrim all the time. If there is one
change I'd ask Ming to make in the mold, it would be to mold the stab
in at zero angle of incidence relative to the wing (like any other fast sloper).

Did some DSing today and the Fox was very quick, even
smoking a JW60 in medium air, and hanging with a 45oz 60" plank.
Everyone was fairly impressed. I don't exactly recommend this use
for it though, as it won't take crashes at DS speeds. Basically have
to treat it just like a crunchie. I've got some video clips of it that
I need to piece together. Will post up later.

ian
Last edited by Daemon; Feb 23, 2008 at 10:16 PM.
Feb 23, 2008, 10:11 PM
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Daemon's Avatar
Video of the Fox DSing today with a few other planes
http://www.thud.us/videos/rc/zion-fox-summit-ds.wmv
No music for this one. Just the quiet sounds of DSing.

It actually got better, and faster, with sunlight on the planes a few minutes
after this video, but of course then everyone was flying so nobody to film it.

BTW, the wing in there that I'm flying formation with, is a 60" 45oz single
fin prototype and you can see they're fairly evenly matched, so that
gives you some idea of its speed potential.

ian
Feb 23, 2008, 10:45 PM
Registered User
I just found out the HS-45 servos are supposed to be unstripable, or so Hitec says. They are designed to skip a tooth but not loose center. We'll see. They are going in the wings and rudder, standard for the elevator.
Feb 23, 2008, 10:55 PM
Registered User
How fast do you think your fox was going in the video?
Feb 23, 2008, 11:43 PM
Good Better Best quest.
olmod's Avatar

Very quick


I'd laugh too , Ian thats working real good for you


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