Click here if you are having trouble logging into the forums Cloudy Nights - Official Forums of the 2009 International Year of Astronomy Privacy Policy | Please read our Terms of Service | Signup and Troubleshooting FAQ | Problems? PM a Red or a Green Gu.... uh, User   You are not logged in. [Login] Entrance · Main Index · Search · New user · Who's Online FAQ · Calendar Equipment Discussions >> ATM, Optics and DIY Forum Previous   Index   Next   Threaded   Pages: 1 Anonymous Unregistered How much does a shroud weigh?       #311879 - 01/15/05 09:01 PM Edit   Reply   Quote Quick Reply   In designing my new scope, I've gathered weight metrics for nearly every conceivable part, and am using a spreadsheet to attempt to balance the torque around the pivot point. Only one number remains as a total fudge - what the heck does a shroud weight, anyway? This would be on the smaller side, I would think, being for a 10" F6. Any data points would be appreciated. Thanks! Doug Edited by Doug Fults (01/15/05 09:04 PM) Post Extras:       Tom L Reged: 01/07/04 Posts: 29817 Loc: Sunny Oregon Re: How much does a shroud weigh? [Re: ]       #311921 - 01/15/05 09:34 PM Edit   Reply   Quote Quick Reply   Depends...what is it made from? I don't even have a shroud on mine so yer on yer own! Dang engineer! Did Kreige have this listed in the bible? -------------------- Tom Tele Vue 102mm f/8.6 on an EzTouch Vixen 80mm f/5 A80SSWT on a grab-n-go mount Post Extras:       Anonymous Unregistered Re: How much does a shroud weigh? [Re: Tom L]       #311945 - 01/15/05 10:00 PM Edit   Reply   Quote Quick Reply   I'm thinking standard ripstop nylon as Kriege & Berry advocate... but I can't find any #s in there! Just one comment somewhere I think about weighing next to nothing. Now I don't know if that means 6 oz. or 2 pounds (hey, it makes a difference!). Post Extras:       rboe Numbfinger Reged: 03/16/02 Posts: 39729 Loc: Phx, AZ Re: How much does a shroud weigh? [Re: ]       #311956 - 01/15/05 10:12 PM Edit   Reply   Quote Quick Reply   Oh I'm sure it's only onces if it's nylon. That stuff is light and you are not using much. If it is light ripstop you can go to a fabic source and they will tell you the weight per yard. (I think it's per yard - in any event it comes in different weights). -------------------- Ron NS11GPS Pronto 16" dob 15X70 Obies Post Extras:       Tom L Reged: 01/07/04 Posts: 29817 Loc: Sunny Oregon Re: How much does a shroud weigh? [Re: rboe]       #311986 - 01/15/05 10:40 PM Edit   Reply   Quote Quick Reply   Plus it is spread across the center of gravity. Consider it negligable and don't worry about it. -------------------- Tom Tele Vue 102mm f/8.6 on an EzTouch Vixen 80mm f/5 A80SSWT on a grab-n-go mount Post Extras:       Anonymous Unregistered Re: How much does a shroud weigh? [Re: Tom L]       #312036 - 01/15/05 11:33 PM Edit   Reply   Quote Quick Reply   OK, I've dropped my estimate to just 6 oz, which my spreadsheet shows contributing a minor 6 inch-pounds of (top heavy) torque. I'd gloss over it, but its funny how this stuff adds up... best to have at least an educated guess in there for everything, I think. Post Extras:       Tom L Reged: 01/07/04 Posts: 29817 Loc: Sunny Oregon Re: How much does a shroud weigh? [Re: ]       #312080 - 01/16/05 12:18 AM Edit   Reply   Quote Quick Reply   That sounds reasonable... -------------------- Tom Tele Vue 102mm f/8.6 on an EzTouch Vixen 80mm f/5 A80SSWT on a grab-n-go mount Post Extras:       Pages: 1 Previous   Index   Next   Threaded   Extra information 10 registered and 12 anonymous users are browsing this forum. 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