Aerial winding

Gambit · 18th August 2009, 04:27 PM

My electric aerial started playing up today. It will extend to it's max then the gear will keep going for about 10 seconds as the ariel is at max the gear is no longer in contact with anything and so it makes a horendous free wheeling noise.
When you switch off and it retracts you get 1 second of free wheeling and noise then the gears connect and the aerial goes down normally.

Question: Is there a sensor or something that tells the winding gear when the aerial is fully extended and that it should shut down?

Martin F · 21st August 2009, 06:10 PM

I would have thought there is some sort of end stop switch but i'm not really that familiar with the internal workings of our aerials.

Gambit · 21st August 2009, 06:16 PM

I'll have to pull it apart then.
At the moment I've disconected the power to it so it's permenantly down, strange thing is; I think the reception is better.

Gambit · 22nd August 2009, 03:00 PM

Update:

I took the unit apart today at first I couldn't see anything wrong.
The internals are made up of a toothed length strip of plastic, which is attached to the tip of the aerial and coils back inside the drum. When activated the motor drives the cog that drives the toothed strip of plastic and unwinds it pushing the aerial up and vice versa.
Upon extending the aerial and hearing the grinding I disconnected it and took it apart.
It was at this point I noticed about four inches of the toothed length were still coiled in the drum and detached from the rest, so the grinding is caused by the aerial never reaching max extension thus the cog never sees a resistance and keeps spinning until the motor times out.

So conclusion is..... It's knackered and I'll need to source another.

Martin F · 22nd August 2009, 07:15 PM

The mast with the toothed cable is available as a seperate piece, and by all accounts not too expensive.

The Restorer · 22nd August 2009, 07:41 PM

Quote:

Originally Posted by Martin F

The mast with the toothed cable is available as a seperate piece, and by all accounts not too expensive.

I'm sure I paid in the region of 35 of HM's finest for one of these. Never got round to fitting it either so happy to take an offer...

Gambit · 22nd August 2009, 08:03 PM

Nice Mo, you have the toothed coil section?

£20 with delivery?

The Restorer · 23rd August 2009, 07:26 PM

Sounds good. Let me dig it out first and then I'll drop you a PM.

Gambit · 23rd August 2009, 08:06 PM

Cheers Mo, I don't know why I bother with the thing, the reception is no better with it up.
But it wasn't made to be broken and so I'm fixing it.

Gambit · 5th September 2009, 10:01 AM

Update:
Part arrived today, cheers Mo.

Old one is in the shed, new one is on the car. The new one stands straighter than the original, old one used to lean over the car and if the aerial was up you couldn't shut the boot without physically moving the top out the way.
For some reason Toyota decided to coil the plastic strip backwards on the card to the way it sits in the housing. Hopefully this won't cause it any stress. But for the moment all's good!

18th August 2009, 04:27 PM	#1
Gambit Old Timer Jap Spec GZ - Auto Aerotop (TT) Join Date: Jul 2004 Location: Worcester Posts: 2,089	Aerial winding My electric aerial started playing up today. It will extend to it's max then the gear will keep going for about 10 seconds as the ariel is at max the gear is no longer in contact with anything and so it makes a horendous free wheeling noise. When you switch off and it retracts you get 1 second of free wheeling and noise then the gears connect and the aerial goes down normally. Question: Is there a sensor or something that tells the winding gear when the aerial is fully extended and that it should shut down? __________________ J-Spec Twin Turbo Aerotop 3G Brakes Blitz nur spec r Full Stainless DC Blitz Active Front Spoiler Controler Greddy Boost + EXT Gauges Running 1bar OZ Superleggera UK Spec Bonnet Scoop UK Glass Headlamps Mines ECU

21st August 2009, 06:10 PM	#2
Martin F Administrator UK Spec - Manual Join Date: Aug 2003 Location: Essex, UK Posts: 10,226	I would have thought there is some sort of end stop switch but i'm not really that familiar with the internal workings of our aerials. __________________ Martin UK6TT + Bits & Bobs 'Remember folks, the inside lane isn't just for Xmas' MSOC FAQ MSOC Members Discounts MSOC Resources

21st August 2009, 06:16 PM	#3
Gambit Old Timer Jap Spec GZ - Auto Aerotop (TT) Join Date: Jul 2004 Location: Worcester Posts: 2,089	I'll have to pull it apart then. At the moment I've disconected the power to it so it's permenantly down, strange thing is; I think the reception is better. __________________ J-Spec Twin Turbo Aerotop 3G Brakes Blitz nur spec r Full Stainless DC Blitz Active Front Spoiler Controler Greddy Boost + EXT Gauges Running 1bar OZ Superleggera UK Spec Bonnet Scoop UK Glass Headlamps Mines ECU

22nd August 2009, 03:00 PM	#4
Gambit Old Timer Jap Spec GZ - Auto Aerotop (TT) Join Date: Jul 2004 Location: Worcester Posts: 2,089	Update: I took the unit apart today at first I couldn't see anything wrong. The internals are made up of a toothed length strip of plastic, which is attached to the tip of the aerial and coils back inside the drum. When activated the motor drives the cog that drives the toothed strip of plastic and unwinds it pushing the aerial up and vice versa. Upon extending the aerial and hearing the grinding I disconnected it and took it apart. It was at this point I noticed about four inches of the toothed length were still coiled in the drum and detached from the rest, so the grinding is caused by the aerial never reaching max extension thus the cog never sees a resistance and keeps spinning until the motor times out. So conclusion is..... It's knackered and I'll need to source another. __________________ J-Spec Twin Turbo Aerotop 3G Brakes Blitz nur spec r Full Stainless DC Blitz Active Front Spoiler Controler Greddy Boost + EXT Gauges Running 1bar OZ Superleggera UK Spec Bonnet Scoop UK Glass Headlamps Mines ECU

22nd August 2009, 07:15 PM	#5
Martin F Administrator UK Spec - Manual Join Date: Aug 2003 Location: Essex, UK Posts: 10,226	The mast with the toothed cable is available as a seperate piece, and by all accounts not too expensive. __________________ Martin UK6TT + Bits & Bobs 'Remember folks, the inside lane isn't just for Xmas' MSOC FAQ MSOC Members Discounts MSOC Resources

22nd August 2009, 08:03 PM	#7
Gambit Old Timer Jap Spec GZ - Auto Aerotop (TT) Join Date: Jul 2004 Location: Worcester Posts: 2,089	Nice Mo, you have the toothed coil section? £20 with delivery? __________________ J-Spec Twin Turbo Aerotop 3G Brakes Blitz nur spec r Full Stainless DC Blitz Active Front Spoiler Controler Greddy Boost + EXT Gauges Running 1bar OZ Superleggera UK Spec Bonnet Scoop UK Glass Headlamps Mines ECU

23rd August 2009, 08:06 PM	#9
Gambit Old Timer Jap Spec GZ - Auto Aerotop (TT) Join Date: Jul 2004 Location: Worcester Posts: 2,089	Cheers Mo, I don't know why I bother with the thing, the reception is no better with it up. But it wasn't made to be broken and so I'm fixing it. __________________ J-Spec Twin Turbo Aerotop 3G Brakes Blitz nur spec r Full Stainless DC Blitz Active Front Spoiler Controler Greddy Boost + EXT Gauges Running 1bar OZ Superleggera UK Spec Bonnet Scoop UK Glass Headlamps Mines ECU

5th September 2009, 10:01 AM	#10
Gambit Old Timer Jap Spec GZ - Auto Aerotop (TT) Join Date: Jul 2004 Location: Worcester Posts: 2,089	Update: Part arrived today, cheers Mo. Old one is in the shed, new one is on the car. The new one stands straighter than the original, old one used to lean over the car and if the aerial was up you couldn't shut the boot without physically moving the top out the way. For some reason Toyota decided to coil the plastic strip backwards on the card to the way it sits in the housing. Hopefully this won't cause it any stress. But for the moment all's good! __________________ J-Spec Twin Turbo Aerotop 3G Brakes Blitz nur spec r Full Stainless DC Blitz Active Front Spoiler Controler Greddy Boost + EXT Gauges Running 1bar OZ Superleggera UK Spec Bonnet Scoop UK Glass Headlamps Mines ECU

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