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Old Nov 17, 2010, 09:14 AM
Vampyre Inc
HoverDown3K's Avatar
Rochester, New York
Joined Nov 2004
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Question
FPV interference and Carbon Fiber

I have noticed that most pan and tilt systems are made of wood, is there any reason NOT to use carbon fiber?

Would a carbon fiber pan and tilt cause any interference?

What a about mounting the Video TX on a carbon fiber plate?



thanks
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Old Nov 17, 2010, 10:20 AM
Sam in Virginia
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Hampton Virginia
Joined Jul 2005
597 Posts
Quote:
Originally Posted by HoverDown3K View Post
I have noticed that most pan and tilt systems are made of wood, is there any reason NOT to use carbon fiber?

Would a carbon fiber pan and tilt cause any interference?

What a about mounting the Video TX on a carbon fiber plate?



thanks
I just installed the large carbon fiber pan and tilt from Hobby King onto my Busy Bee plane and it works great. I dont think carbon fiber is a good idea anywhere around the video transmitter or antenna but if you try it , just be sure to range check it before flying.
FPV Busy Bee first flight (8 min 39 sec)
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Old Nov 17, 2010, 12:36 PM
Spektrum Dev Team
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United States, IL, Champaign
Joined Apr 2002
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Quote:
Originally Posted by sverlander View Post
I just installed the large carbon fiber pan and tilt from Hobby King onto my Busy Bee plane and it works great. I dont think carbon fiber is a good idea anywhere around the video transmitter or antenna but if you try it , just be sure to range check it before flying.
http://vimeo.com/16871610
I'm pretty sure that mount is just fiberglass....
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Old Nov 17, 2010, 12:55 PM
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United States, MI, Detroit
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treat CF as you would metal. They have similar RF blocking properties.
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Old Nov 17, 2010, 03:15 PM
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Lakewood, Colorado
Joined Aug 2002
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They actually don't behave the same. Carbon fiber tends to attenuate signals while
metal reflects them. A steel rod can create obnoxious multipath interference for a
nearby Tx or Rx. Carbon rods and ribbons tend to not do that, and only become a
problem when you physically block the whole signal.

I use a carbon fiber pan/tilt mount, and it has been no better or worse than
the identically shaped wood mount it replaced Rf-wise. It has lasted much much longer.
A metal cased camera near the video Tx antenna is likely to be a bigger problem.

ian
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Old Nov 17, 2010, 05:54 PM
Sam in Virginia
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Hampton Virginia
Joined Jul 2005
597 Posts
Quote:
Originally Posted by aaronredbaron View Post
I'm pretty sure that mount is just fiberglass....
You are correct, I just looked at HK web page and it say's fiberglass.
I guess because it is black in color I assumed it was carbon fiber.
Anyway it seems like a good mount so far, differently light weight but strong.
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Old Nov 18, 2010, 02:15 PM
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United States, MI, Detroit
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Quote:
Originally Posted by Daemon View Post
They actually don't behave the same. Carbon fiber tends to attenuate signals while
metal reflects them. A steel rod can create obnoxious multipath interference for a
nearby Tx or Rx. Carbon rods and ribbons tend to not do that, and only become a
problem when you physically block the whole signal.

I use a carbon fiber pan/tilt mount, and it has been no better or worse than
the identically shaped wood mount it replaced Rf-wise. It has lasted much much longer.
A metal cased camera near the video Tx antenna is likely to be a bigger problem.

ian
thanks for correcting, I meant they both block, not so much the metal reflecting part. Either one will create a nice blind spot behind it (right?)
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