More on dust

Submitted: Sunday, Oct 26, 2003 at 21:37

ThreadID: 8106 Views:1406 Replies:7 FollowUps:2

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Moneypit

Are there any benefits to fitting the 'air deflector' that I see on the back of many 4WD that are getting around now, particularly Nissans and Toyota's. They are the ones that sit just above the rear doors on the roof.

Worth having or not? What do they do?

Thanks

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Reply By: Outnabout David (SA) - Sunday, Oct 26, 2003 at 21:46

Sunday, Oct 26, 2003 at 21:46

The Toyota ones on Landcruiser and Prado certainly work. They deflect air over the back window to stop some of the vacum effect on the back window. They also help reduce some of the dust entering the vehicle if you leave your air on recirculate by mistake. You will still get dust in and on the rear window but not nearly as much as without.We have so little time to enjoy our land

AnswerID: 35183

Reply By: Truckster (Vic) - Sunday, Oct 26, 2003 at 21:57

Sunday, Oct 26, 2003 at 21:57

yea they also get good wraps on patrol list on the GU's.

AnswerID: 35186

Reply By: Mickl - Sunday, Oct 26, 2003 at 22:52

Sunday, Oct 26, 2003 at 22:52

All vehicles create wake turbulance as they travel along. The idea of the deflector is to improve air flow over the back of the vehicle and increase the amount of attached (laminar) ai flow on the rear window/door area. The increased air flow should result in less dust on the window! How good they are depends on the design(ie how much cash the manufacturer put into wind tunnel testing!!)

The improved airflow is infact an aerodynamic improvement however don't expect any noticable performance gain to your 2 ton rig!!!!

AnswerID: 35199

Reply By: Spy - Monday, Oct 27, 2003 at 00:01

Monday, Oct 27, 2003 at 00:01

Just completed a trip along the Great Central Road and Mereenie loop in a '92 Nissan Patrol and had no problems with dust. Considered purchasing a deflector before we went, but now I'm glad that we didn't. Dust problems in earlier models seem to have been rectified.

AnswerID: 35202

Reply By: Ed - Monday, Oct 27, 2003 at 00:42

Monday, Oct 27, 2003 at 00:42

I have a deflector on my GU...
Does not entirely eliminate dust on rear windows, but certainly less with it than without...
Also noticeably reduces the grime buildup on rear of vehicle when driving on wet roads after rain...
Wouldn't be without it!

Regards,
Ed. C.

AnswerID: 35203

Reply By: Moneypit - Tuesday, Oct 28, 2003 at 02:13

Tuesday, Oct 28, 2003 at 02:13

Thank you for the info. Appreciate it all.

Verdict - Once deflector coming up.

Dave

AnswerID: 35341

Follow Up By: Janset - Tuesday, Oct 28, 2003 at 16:16

Tuesday, Oct 28, 2003 at 16:16

Hi Guys.

Where can these things be bought and what would be the costing on one?

Regards

FollowupID: 25587

Follow Up By: Ed - Tuesday, Oct 28, 2003 at 16:35

Tuesday, Oct 28, 2003 at 16:35

Got mine (GU) from Nissan dealer.. From memory around $80.00, fitting extra...
Fitted mine myself, not difficult...

I presume it's the same for other vehicle makes, may even be some "after market" (eg. Aunger) ones available for some makes, though when I was looking, the "genuine" Nissan one was all that was available...

Regards,
Ed. C.

FollowupID: 25590