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Quote: Originally posted by kenles on 11/11/2011

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Red dot to front of the van so pointy end to the front and you you will see 95% do it that way round

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Our aerial has the red dot to the rear when the 'pointy' end is to the rear.  Correct position is: (a) aerial in horizontal position (b) mast fully down (c) pointed end to the rear.  Having the pointed end (longer distance from mast) to the front could cause slipstream from slope of roof to impose more strain of 'lift' under the aerial.

Bertie.

Very intresting this blunt end forwards theory

I do wonder why the makers of car roof boxes still go with pointy end forwards ?

Quote: Originally posted by Big Al on 15/11/2011

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Very intresting this blunt end forwards theory

I do wonder why the makers of car roof boxes still go with pointy end forwards ?

<img style="BOX-SIZING: content-box; BORDER-BOTTOM: 0px; BORDER-LEFT: 0px; BORDER-TOP: 0px; CURSOR: url(https://www.roofracks.co.uk/floatbox/graphics/magnify_plus.cur), default; BORDER-RIGHT: 0px" id=fbContent class="fb fb_black" name=fbContent alt="" src="https://www.roofracks.co.uk/thule/Roof+Box+and+Car+Roof+Pod/Thule+Pacific+100+200+500+600+700+Black+Grey/img/pa_demo1.jpg" width=511 alt=382 HR="url(https://www.roofracks.co.uk/floatbox/graphics/magnify_plus.cur), default">

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It is easy to see why the 'blunt' end should be pointing forwards.  For equilibrium in balance of the aerial, the mast support must be nearer to the blunt end (weight distribution).  So, as it is best to have the aerial subjected to as little 'up-lift' as possible during travelling, the longer area is placed so as to trail the mast.  And any resultant vibration from the vortex of air behind the aerial is likely to be much less at the pointed end than if the blunt end was trailing. 

bertie.

I have this type of aeriel...

The instrustion in my wardrobe say pointed end rear facing.

Quote: Originally posted by FlyFifer on 21/11/2011

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As the pointy bit is the part which catches the signal
So you should have it facing rear when travelling as to avoid it taking damage that is what i read before somewhere

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I sometimes smile at the performance to pull out (or push in) the small extendable aerials at the 'blunt' end.  these are only for VHF reception in Continental Europe.

Bertie.

Quote: Originally posted by The 2 Tops on 22/11/2011

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Quote: Originally posted by FlyFifer on 21/11/2011

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As the pointy bit is the part which catches the signal
So you should have it facing rear when travelling as to avoid it taking damage that is what i read before somewhere

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I sometimes smile at the performance to pull out (or push in) the small extendable aerials at the 'blunt' end.  these are only for VHF reception in Continental Europe.

Bertie.

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