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JustGreg
Joined: 07 Mar 2006
Posts: 3098
Location: Kenosha, WI
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| Posted: Mon Jan 15, 2007 12:07 am Post subject: Deriving width from height formula needed |
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I can't seem to find the calculator I had for screen sizes so thought I'd run it past you guys.
I'm finally $hit caning the Da-Lite el-crapo manual pulldown (it has something like a .8x gain) and building a screen.
I bought about 6 yards x 54" of BOC. (I know it's more width than I need).
I plan on a vertical viewable of 54" and understand from other posts here that it will stretch plenty for me to get it onto a 54" frame.
I just wanted to check my math before building the frame...the width would be 54 x 1.78 correct? (For a total of 96.12").
TIA
Greg
_________________
Greg
"Is it ignorance or apathy? Hey, I don't know and I don't care!" --Jimmy Buffett
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Joust
Joined: 05 May 2006
Posts: 2429
Location: Almonte, Ontario, Canada
TV/Projector: Marquee 8501LC
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| Posted: Mon Jan 15, 2007 12:46 am Post subject: |
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aspect |
ratio |ht. |width |diagonal
1.33 |54 |71.82 |89.856064
1.78 |54 |96.12 |110.24996
2.35 |54 |126.9 |137.91160
made a quick excel spreadsheet.
easy to plug in different values
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JustGreg
Joined: 07 Mar 2006
Posts: 3098
Location: Kenosha, WI
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| Posted: Mon Jan 15, 2007 3:42 pm Post subject: |
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Thanks joust! Printed and added to the HT "bible".
I built the frame last night. I used the plans for the most part that are posted on the main site. Instead of screws I used lots of wood glue, wooden pegs, biscuits and a brad nailer.
Not all I have to do (all?) is stretch the BOC. 54" frame---54" material. CZ Eddie and Kal say it stretches alot. I believe them but they didn't say how many days it took for their hands to recover.  All I used my hands for is typing and holding a fork...they're in for a beating.
Thanks again for the fast reply!
Greg
_________________
Greg
"Is it ignorance or apathy? Hey, I don't know and I don't care!" --Jimmy Buffett
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Joust
Joined: 05 May 2006
Posts: 2429
Location: Almonte, Ontario, Canada
TV/Projector: Marquee 8501LC
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| Posted: Mon Jan 15, 2007 4:41 pm Post subject: |
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no problem.
i can post the XLS if you like.
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JustGreg
Joined: 07 Mar 2006
Posts: 3098
Location: Kenosha, WI
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| Posted: Mon Jan 15, 2007 6:45 pm Post subject: |
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| Joust wrote: | no problem.
i can post the XLS if you like. |
That would be great. Perhaps asking Kal if he wants to post it on the main site or make it a sticky in the screens would be even better. That way everybody can benefit from your contribution.
Thanks again. 
Greg
_________________
Greg
"Is it ignorance or apathy? Hey, I don't know and I don't care!" --Jimmy Buffett
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