· Get a Cloudy Nights T-Shirt · Submit a Review / Article Click here if you are having trouble logging into the forums 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 >> Mounts Previous   Index   Next   Threaded   Pages: 1 drg journeyman Reged: 05/01/09 Loc: Georgia, USA any one has hydraulic mount?       #3159030 - 06/12/09 12:52 PM Edit   Reply   Quote Quick Reply   I have a Celestron C6-GT 150mm and built a roll off observatory and when I look toward the zenith my eyepiece is almost in the floor, I need to be able to incrrease the hight of the pier after I open the roof and be able to lower the peir to be able to close the roof. may be someone have the same problem and can help me. Post Extras:       scopeman journeyman Reged: 03/17/07 Loc: California Re: any one has hydraulic mount? [Re: drg]       #3159279 - 06/12/09 03:11 PM Edit   Reply   Quote Quick Reply   Hi DRG, I believe PierTech sells an electric extendable pier. I think it ran about 1500.00 or so. I have often thought about one because I would like to extend my pier a bit in my roll off too. Just isn't at the top of the list right now because of cash Regards, Barry Post Extras:       John Carruthers Skiprat Reged: 02/02/07 Loc: Kent, UK Re: any one has hydraulic mount? [Re: drg]       #3160206 - 06/13/09 04:05 AM Edit   Reply   Quote Quick Reply   One of our members has an old hydraulic ram sunk in the ground and a foot pump to pump it up, works very well, he has a 10" F6 on it no problems. I think it was on a skip lorry in a former life but there are always a few in the scrap yard. Post Extras:       Rusty Postmaster Reged: 08/06/03 Loc: Brooker, FL Re: any one has hydraulic mount? [Re: John Carruthers]       #3161442 - 06/13/09 09:23 PM Edit   Reply   Quote Quick Reply   Welcome to Cloudy Nights! The parts Pier-Tech uses are available from McMaster-Carr; I priced them years ago, and I got my PT 2 for less then the price of the parts. However, if you have access to a hydraulic ram, pumps, and control valves, you yould save some money over a new PT. Post Extras:       Luigi Postmaster Reged: 07/03/07 Loc: MA Re: any one has hydraulic mount? [Re: Rusty]       #3162037 - 06/14/09 08:38 AM Edit   Reply   Quote Quick Reply   Just like to point out that it needn't be hydraulic. Any means to provide the mechanical advantage necessary to raise and lower the mount/scope smoothly should suffice. Could be a winch, screw, lever, etc.. I designed (but never built) a pier that moved up and down 10" using a manual lever and would precisely register in both positions. It would take some fabrication capability to implement...but I'm sure some saw dust devotee out there could come up with a wood design. Post Extras:       John Carruthers Skiprat Reged: 02/02/07 Loc: Kent, UK Re: any one has hydraulic mount? [Re: Luigi]       #3162059 - 06/14/09 09:03 AM Edit   Reply   Quote Quick Reply   True, JK uses a motorcycle jack for his fold up observatory. Post Extras:       tim53 Postmaster Reged: 12/17/04 Loc: Highland Park, CA Re: any one has hydraulic mount? [Re: John Carruthers]       #3162270 - 06/14/09 11:40 AM Edit   Reply   Quote Quick Reply   Another option, requiring a sturdy mount, is to add weights to the focuser end of the OTA, so the CG is closer to the eyepiece end than the sky end. I did this for my 6" f/10 Jaegers by adding small (I think they're 3 pounds each) barbell weights to either side of the tube. -Tim. Post Extras:       drg journeyman Reged: 05/01/09 Loc: Georgia, USA Re: any one has hydraulic mount? [Re: drg]       #3162632 - 06/14/09 03:44 PM Edit   Reply   Quote Quick Reply   I appreciate everyone in this forum that took time to answer to my question. I have decided to use: Husky 12 Ton Bottle Jack Model T91203H $25.00 from HomeDepot, I think it will do all I need it to do for a small price.I will keep everyone posted if it work. Thanks to everyone drg Post Extras:       tim53 Postmaster Reged: 12/17/04 Loc: Highland Park, CA Re: any one has hydraulic mount? [Re: drg]       #3163779 - 06/15/09 11:21 AM Edit   Reply   Quote Quick Reply   Depending on where you live, you might also consider building something around a hydraulic ram from Harbor Freight - one of those used in engine hoists, with a long cylinder with lots of travel: hydraulic jack Other suppliers probably also carry a similar product, but that one just came to mind. In any case, you'd want one of these to do the lifting. You'll still need some pier structure that preserves polar alignment while you raise or lower your pier with it. -Tim. Post Extras:       Pages: 1 Previous   Index   Next   Threaded   Extra information 19 registered and 30 anonymous users are browsing this forum. 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