A cheap and Simple Axe CP antenna mod  
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All Forums >> RC Helicopters >> Electric RC Helis >> Helimax >> A cheap and Simple Axe CP antenna mod
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A cheap and Simple Axe CP antenna mod - 8/13/2007 2:15:03 AM   
DKhairho



Posts: 132
Joined: 5/14/2007
From: Moreno Valley, CA, USA
Status: offline 		I don't know if anyone is like me out there, but I hate having to unravel and then re-ravel the antenna wire around the landing gear after a landing gear fix.

I didn't want to wait on a Micro-Z 72 antenna order from my LHS so I dicided to use a bit of skill and creativity to rig something from stuff I alread had lying around the house.

Heat Shrink Tubing
Nitro Fuel Line
Antenna Tube

I cut the antenna tube 4 1/2 inches long and ran the antenna wire through it leaving enough slack to reach the land gear slots from the receiver. I then wrapped the wire around the outside of the antenna tube, not to tight though. Next I cut 3, half inch pieces of heat shrink tube and secured the wire in place. Some may choose to cover the whole tube. I just wanted to make room for as much reception as I could. Just me being extra cautious. Lastly I cut 2 small pieces of fuel line to cap off each end of the tube. I checked my reception during flight and it seemed to work fine. I do reccomend that you leave a piece of the antenna wire end protruding from the outside of the heat shrink and fuel line.

***Note: I'm no professional just sort of a home grown "Mr. Fix-It."

I posted some pics because I thought it was a cool idea to share. Hope others find this mod useful!



Attachments
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_____________________________

"TAME THE SKY or BLAME THE GROUND!"
HPI H''Fire/Align T-Rex 450SE/AC SV27
       Post #: 1

RE: A cheap and Simple Axe CP antenna mod - 8/13/2007 3:28:58 AM   
s_mcflurry


 

Posts: 230
Joined: 4/13/2007
From: Santa Ana, CA, USA
Status: offline 		I've always been hesitant to adjust the length of the tubing at all because I read somewhere (or so I believe) that the length of the tubing needed to be certain length for frequency reasons. Can you enlighten me please?

(in reply to DKhairho)
       Post #: 2

RE: A cheap and Simple Axe CP antenna mod - 8/13/2007 3:36:53 AM   
jmann71


 

Posts: 71
Joined: 3/3/2007
From: royersford , PA, USA
Status: offline 		that would be the length of the antenna lead for the freq. though, the longer the antenna tube, the greater the range.

jason

_____________________________

what the?? did you see that! must of been the wind.

(in reply to s_mcflurry)
       Post #: 3

RE: A cheap and Simple Axe CP antenna mod - 8/13/2007 4:44:01 AM   
DKhairho



Posts: 132
Joined: 5/14/2007
From: Moreno Valley, CA, USA
Status: offline 		JMann is correct. The length of the actual wire is what's important. I know not to tamper with that. Learned that from one of my cars when I first got into to RC. I think that my mod comes with the same "caution" as the Micro-Z,

"Note: In some cases the receiver range is slightly reduced so a range check should be done before flying." This came from the site that carries them and I figured the same when doing my mod. That's why I made most of the wire visible.


_____________________________

"TAME THE SKY or BLAME THE GROUND!"
HPI H''Fire/Align T-Rex 450SE/AC SV27

(in reply to jmann71)
       Post #: 4

RE: A cheap and Simple Axe CP antenna mod - 8/13/2007 5:16:27 AM   
Heliko



Posts: 591
Joined: 1/16/2007
From: Long Island, NY, USA
Status: offline 		Nice Mod DK.

This is being discussed on RC Groups too. Something about the frequency determining the length. I think for our frequency (72MHz) it's 39" of wire. That what the a Micro-Z has and another poster mentioned the same length with his custom antenna. The Micro-Z wire is just smaller. I have one and I love it. One of the best mods for the Axe IMO in both looks and function.

Attachments
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Click for fullsize 		Click to see fullsize image.
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Click for fullsize


_____________________________

"Gravity is a harsh mistress." The Tick

(in reply to DKhairho)
       Post #: 5

RE: A cheap and Simple Axe CP antenna mod - 8/13/2007 5:19:53 AM   
DKhairho



Posts: 132
Joined: 5/14/2007
From: Moreno Valley, CA, USA
Status: offline 		It worked well for me today. I just thought it was something cool to share. I try to make my hobbies as convenient as possible. Less hassle means more fun in my opinion.


_____________________________

"TAME THE SKY or BLAME THE GROUND!"
HPI H''Fire/Align T-Rex 450SE/AC SV27

(in reply to Heliko)
       Post #: 6

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