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Sep 19, 2012, 11:48 AM
Registered User
Quote:
Originally Posted by jb_bak
My folding prop does not have anything to push against going forward. Another words, you can physcially move the props far enough forward that they touch the trailing edge of the plane. Is this correct or have I got them mounted wrong? I did build a bracket to keep them from going over center to the rear
The only time (extremely rare) when this might be a problem is if you've gone vertical, shut the motor off at the zero gravity point and the plane does a tail slide. Then the blades can go towards the body and if you crank the motor on before the X8 flips over to point its nose down (and wind pushes the blades back), the blades could whack the body.
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Sep 19, 2012, 12:17 PM
Registered User
eroeder's Avatar
Quote:
Originally Posted by Daemon
That's fine. Centrifugal force will keep it from going forward.
What is extremely important is that you have a prop-stopper to prevent
a blade from folding back past the center line. If it does, it will not swing open
when the motor starts and the severe imbalance will literally rip the
motor from the plane.

ian
What is a prop stopper? Never heard of it. Who sells?
Thanks!
Sep 19, 2012, 12:21 PM
Registered User
Daemon's Avatar
Many sources if you search but here's an example http://www.getfpv.com/accessories-27/accessories.html
It prevents the blades from folding back over center.
I've made em myself out of sheet metal, and even old cut up credit cards.

ian
Sep 19, 2012, 12:29 PM
Registered User
Here's another:
http://www.espritmodel.com/search.as...d=prop+stopper
Sep 19, 2012, 01:46 PM
Registered User
eroeder's Avatar
Interesting!
Sep 19, 2012, 03:22 PM
Italy Genoa
Actually i haven't understood, wich is the correct CG?
Thanks
Sep 19, 2012, 03:53 PM
Registered User
Thank you guys for clearing up my folding prop question
Sep 19, 2012, 03:54 PM
Registered User
Daemon's Avatar
Quote:
Originally Posted by AlexF
Actually i haven't understood, wich is the correct CG?
Thanks
Rear edge of the two front finger holes.
Sep 19, 2012, 03:55 PM
Registered User
I just ordered a X8 and I am now checking for the electronics...
I'm wondering if I could use a e-flite 25 as Motor... is has very similar Specs of the Hacker A-30
http://www.e-fliterc.com/Products/De...odID=EFLM4025A

I got both the E-Flite 25 and an E-flite 60A ESC... would those work well?
Sep 19, 2012, 03:57 PM
Italy Genoa
Deamon,
so why somebody says different cg?
Sep 19, 2012, 04:01 PM
Registered User
Stefan_Go's Avatar
If I understood it right, some people said that a CG a few mm in front of the recommended CG provides more stability and prevents stalling.
Sep 19, 2012, 04:08 PM
Registered User
Quote:
Originally Posted by frviana
I just ordered a X8 and I am now checking for the electronics...
I'm wondering if I could use a e-flite 25 as Motor... is has very similar Specs of the Hacker A-30
http://www.e-fliterc.com/Products/De...odID=EFLM4025A

I got both the E-Flite 25 and an E-flite 60A ESC... would those work well?
Also, is this the Hitec HS-485HB Deluxe servo 4.8kg/45g/0.22sec too big of a Servo? I have a few of it hanging at home.
Sep 19, 2012, 04:16 PM
Italy Genoa
that's right!
so witch CG is correct?
the one that bev says is wrong!
Sep 19, 2012, 04:44 PM
Registered User
seojeff's Avatar
Quote:
Originally Posted by frviana
I just ordered a X8 and I am now checking for the electronics...
I'm wondering if I could use a e-flite 25 as Motor... is has very similar Specs of the Hacker A-30
http://www.e-fliterc.com/Products/De...odID=EFLM4025A

I got both the E-Flite 25 and an E-flite 60A ESC... would those work well?
Sounds like a great combo to me.
Sep 19, 2012, 04:47 PM
Registered User
seojeff's Avatar
Quote:
Originally Posted by AlexF
that's right!
so witch CG is correct?
the one that bev says is wrong!
CG is pretty forgiving on the X8. Start at the recommended point (rear edge of the finger holds) and go from there. If you click 'Thread Tools' at the top of this page and then 'View all attachments from this thread', you'll see a few images of exactly where the CG should be. It's worth skimming through this entire thread, however daunting that might seem.


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