motorized car antenna

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leahmc28

Member - Posts: 6

Joined: October 02, 2010

Location: Ontario, Canada

Posted: May 26, 2011 at 1:08 PM / IP Logged

I have a few questions,

How do these devices work?

How much weight can they handle?

What I really need to use is a linear actuator, however cost is an issue so I am trying to think of a way to make a home made cost effective version. Any ideas?

i am an idiot

Platinum - Posts: 13,674

This member consistently provides reliable information

Joined: September 21, 2006

Location: Louisiana, United States

Posted: May 26, 2011 at 4:37 PM / IP Logged

What are you trying to lift?

oldspark

Gold - Posts: 4,913

Joined: November 03, 2008

Location: Australia

Posted: May 31, 2011 at 4:41 AM / IP Logged

I hate to awaken, but assuming you (leahmc28) want to make your own motorised antenna, I'd suggest forget it - you won't make cheaper than the mass-produced versions (flex-drives, torque clutches, water & dust coping etc).

Regarding a linear actuator - as in straight line? Too many problems and issues - a round motor and flex drive is the best.

However, last I looked (about 10-20 years ago) I could see great scope for auto controls, though many cars now have that - eg, auto down after a delay after radio or IGN off etc.

I doesn't sound like you are using a motorised antenna as a linear actuator....(?)

i am an idiot

Platinum - Posts: 13,674

Joined: September 21, 2006

Location: Louisiana, United States

Posted: May 31, 2011 at 9:46 PM / IP Logged

I think he is wanting to use an automatic ariel as a linear actuator.

oldspark

Gold - Posts: 4,913

Joined: November 03, 2008

Location: Australia

Posted: May 31, 2011 at 10:36 PM / IP Logged

In that case it's a good choice - subject to the clutch torque and having rails or similar for the thing being moved unless using the antenna tip itself to do the moving. IMO a good idea, and probably cheap too.

i am an idiot

Platinum - Posts: 13,674

Joined: September 21, 2006

Location: Louisiana, United States

Posted: May 31, 2011 at 10:58 PM / IP Logged

I am trying to find out how much weight he is trying to lift.

howie ll

Pot Metal - Posts: 16,466

Joined: January 09, 2007

Location: United Kingdom

Posted: June 01, 2011 at 11:25 AM / IP Logged

Well if it's a tailgate, he can bloody well forget using an auto antenna, wouldn't even use one to scratch my back.

I'm guessing anything over 10lbs (4+ kilos) forget it.

leahmc28

Member - Posts: 6

Joined: October 02, 2010

Location: Ontario, Canada

Posted: June 02, 2011 at 1:19 PM / IP Logged

Yes, I was trying to use a car antenna as a linear actuator, but I am lifting 1'of 4" exhaust from the inside of a 5" exhaust and realized its definitely too heavy. I went with a lead screw idea from a company called MacMaster Carr (cheapest I could find by far) and am waiting on it to be shipped.

P.S. I'm a she not a he motorized car antenna -- posted image.

howie ll

Pot Metal - Posts: 16,466

Joined: January 09, 2007

Location: United Kingdom

Posted: June 02, 2011 at 1:30 PM / IP Logged

You had to say she didn't you. Now my mind is boggling and I'm biting my tongue over silly jokes, still what you're trying to do is very Freudian

Hell they will sensor this won't they motorized car antenna -- posted image.

howie ll

Pot Metal - Posts: 16,466

Joined: January 09, 2007

Location: United Kingdom

Posted: June 02, 2011 at 1:32 PM / IP Logged

By the way, all joking aside, apologies for calling you a he, "leahmc" should have been a clue motorized car antenna -- posted image.

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