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ibex 300 build


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  • 3 weeks later...

As previously mentioned my preferred roof rack involves cage tube. This is outside my budget at the moment so a semi permanent solution. I have three lengths of 50mmx20mmx2mm Ali box these have been attacked with a holesaw and tapped into the spaceframe of the roof.

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Not the most aerodynamic solution but have you seen an ibex. :rofl:

Mike

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1 hour ago, miketomcat said:

It doesn't whistle on the motorway so I'm not worried......

Mike

That's interesting, and I'm glad I held back, because I'd anticipated that those holes would whistle. Perhaps it's because they are holes into a box section, and taking  most of the width of the box so there is no maintained air flow after it separates on the sharp edge.

Regards.

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On 6/6/2019 at 4:59 PM, Ed Poore said:

Chamfer the front and rear edges :rolleyes:...

That was my initial thought - use plastic extrusions to make fillet sections to smooth out the airflow.  But I think it’s the roughened airflow caused by the 90 degree profile that is preventing the whistling ; I’d wager that if you fit smoothing fillets, you’d substitute a faint roar (lost in the background of the other aerodynamic noise and tyres) for a more noticeable whistle.

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1 hour ago, daveturnbull said:

 I am however wondering how long you're going to get away with having your winch rope party obscuring the number plate.

Yeah I must get round to sorting something to loop the rope round lower down. :rtfm: It is readable from speed camera hight but I'm not sure anpr can read a Q plate anyway. :ph34r:

Mike

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