Do this for fresh air
http://www.gmcmhphotos.com/photos/auxilary-fresh-air-vents/p4069.html
> I think the windshield design of the GMC causes a huge low pressure area
> where the windows are.
>
> Even with wind wings, you don't get much air unless you turn the wings out
> to catch a lot of air, then close the window until it's even with the wing.
> THEN you get a blast of air, but otherwise you get almost nothing.
>
> ________________________________
> From: Gmclist on behalf of KB <
> kab7>
> Sent: Tuesday, August 1, 2017 10:29:09 PM
> To: gmclist
> Subject: Re: [GMCnet] Original Style "Toll Windows" Available
>
> So is the consensus that the new cockpit windows only improve airflow if
> you also have wind wings??
>
> thanks,
> Karen
> 1975 26'
>
>
> > I've found that leaving the wind wings slightly loose, I could adjust
> them quite easily through the toll window.
> >
> > Once adjusted - I had a HIUGE increase in air coming in. They are now
> acting like more of a "ram air" and scooping the air directly into the
> > cockpit. Previously they acted like more of a no-draft vent window, with
> very little air flow.
> >
> > Much more refreshing!
> >
> > Rob
> > Victoria, BC
> > 76 Royale - Rear Twins/Dry Bath
> >
> > >
> > > Re: the Bounds windows
> > >
> > > I also have a pair installed in the Moneypit. Justin, funny but
> compared to the old toll windows, I find that I am getting a reasonable
> > > amount of air
> > > coming in. Mind you, I do have Ragusa wind wings, but I found that
> with both "toll windows" open the wind wings were useless I was getting no
> > > breeze
> > > whatsoever in the cockpit. Just drove 500 miles in warmish weather
> and found that with just the driver Bounds window open I could turn the AC
> > > fan down
> > > to the lowest setting. I did have the Max Air at the back of the
> coach open and on extract, which perhaps helped suck air in.
> > >
> > > Jim K, if you are looking for a project, it would be really great to
> have magnetic bug screen inserts available for the Bounds windows, so
> > > us
> > > boondockers who have to count on cross breezes to keep cool at night
> could leave these windows open. I believe you used to carry them for the
> > > toll
> > > windows.
> > >
> > >
> > > Gordon
> > > --
> > > Gordon Gibson
> > > 1976 23" Norris Upfit
> > > Montreal West, Quebec, Canada
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>
>
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--
Gene Fisher -- 74-23,77PB/ore/ca
“Give a man a fish; you have fed him for today --- give him a URL and
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Alternator Protection Cable
http://bdub.net/gmcmotorhome.info/APC.html