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 Stevenson screens 
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 Post subject: Re: Stevenson screens
PostPosted: Wed Jan 21, 2015 6:48 pm 
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Joined: Mon Nov 02, 2009 10:23 pm
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Location: Maulds Meaburn, Cumbria
Altitude: 183
Weather Station: Davis VPro2
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Carl - thanks.

My stand doesn't have any holes by which to screw into the legs anyway - what it does have are x2 holes on the side frame (side of the box) so could be very similar
I can see another visit to Paul being needed.

after all this it better fit onto my stand

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 Post subject: Re: Stevenson screens
PostPosted: Wed Jan 21, 2015 7:20 pm 
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Location: Drumburgh
Altitude: 7m
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Darren - heres my very close pic of screen and stand connection might help.
Attachment:
screenstand.jpg
screenstand.jpg [ 42.46 KiB | Viewed 913 times ]

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 Post subject: Re: Stevenson screens
PostPosted: Thu Jan 22, 2015 7:00 am 
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Location: Maulds Meaburn, Cumbria
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I'm optimistic (cautiously)
Two holes on the side frame, a bolt/bracket across that the screen is bolted to - looks good.
in a perfect world the hardest part will be removing my old screen - wishful thinking!!!

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 Post subject: Re: Stevenson screens
PostPosted: Thu Jan 22, 2015 10:03 am 
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Location: Drumburgh
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Mind you the new screens are much heavier than the wooden ones might need a fork lift ;)

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 Post subject: Re: Stevenson screens
PostPosted: Fri Jan 23, 2015 8:21 pm 
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Joined: Mon Nov 02, 2009 8:52 pm
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Location: Brampton
Altitude: 117m
Weather Station: Davis VP2
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The photo is the same as mine - the new ones should last a long time

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 Post subject: Re: Stevenson screens
PostPosted: Sat Jan 24, 2015 2:45 pm 
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Joined: Sat Apr 02, 2011 10:22 pm
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Location: Isel valley, Northern Lakes
Altitude: 140m
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made myself one of those small radiation shields like a davis one.

reading 1.5c above my screen in full sun today, so not impressed.

maybe the air gaps between each bit of plastic are too big, and letting in solar radiation?

night time temps were spot on though


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 Post subject: Re: Stevenson screens
PostPosted: Tue Jan 27, 2015 1:26 pm 
Professor
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Location: Brampton
Altitude: 117m
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Dimension are the same as your email.

Mine is held down by a large metal bracket running under the screen. 2 large screws/bolts come up from the bracket and its then clamped into the screen itself. The Metal bracket fits underneath the top section of the stand and its not screwed in, held in place by the upward pressure of the bracket and bolts

In theory you could screw the screen legs to the metal frame, but this may weaken the legs ? There are no pre drilled holes on the frame I have that would support a new frame as per the link. If the new screen comes with holes in the legs, we must assume its been tested for strength and should be OK. As long as you handy with a drill I cant see why you cant screen it to the legs from your existing stand. Its thick metal, going to need a decent drill/drill bit

Mine has two large side brackets with a pre drilled hole, but they are not in use.

Edit - note gap between leg and stand approx 3/8" 5mm and how short the leg sits in the stand


Attachments:
Capture2.JPG
Capture2.JPG [ 50.57 KiB | Viewed 876 times ]
Capture.JPG
Capture.JPG [ 53.37 KiB | Viewed 876 times ]

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Paul C
Brampton. 117m ASL.
http://www.bramptonweather.co.uk
Imagehttps://twitter.com/#!/pacrabtree


Last edited by Paul C on Tue Jan 27, 2015 1:45 pm, edited 3 times in total.
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 Post subject: Re: Stevenson screens
PostPosted: Tue Jan 27, 2015 1:30 pm 
Professor
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Location: Brampton
Altitude: 117m
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Metal bar, holding it in


Attachments:
Capture7.JPG
Capture7.JPG [ 74.44 KiB | Viewed 876 times ]

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Paul C
Brampton. 117m ASL.
http://www.bramptonweather.co.uk
Imagehttps://twitter.com/#!/pacrabtree
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 Post subject: Re: Stevenson screens
PostPosted: Tue Jan 27, 2015 1:31 pm 
Professor
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Joined: Mon Nov 02, 2009 8:52 pm
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Location: Brampton
Altitude: 117m
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Redundant brackets on my stand


Attachments:
Capture8.JPG
Capture8.JPG [ 52.96 KiB | Viewed 876 times ]

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Paul C
Brampton. 117m ASL.
http://www.bramptonweather.co.uk
Imagehttps://twitter.com/#!/pacrabtree
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 Post subject: Re: Stevenson screens
PostPosted: Wed Jan 28, 2015 11:06 am 
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Joined: Mon Nov 02, 2009 10:23 pm
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Location: Maulds Meaburn, Cumbria
Altitude: 183
Weather Station: Davis VPro2
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Paul - thanks and I have also sent you an e-mail to confirm that our stands have the same dimensions, which is a fairly important starting point!
What I see in your photos is about what I expected, but a few points:

1.) If the legs of a new screen have pre-drilled holes in the centre, could you line them up with the holes that you
would have to drill into the stand by which to attach both together.
Looking at your photos I'm not sure if you could.

2.) Your bracket/bar which screws into the screen - so that bar is not attached to the stand in anyway?
that surprised me - so I'm thinking that this bar must be prevented from being pulled up by the frame of
the stand?
I think that I would need one - if the worst was to come to the worst I could have one made.

this really should be more straight forward than it is proving!!

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