Charlie Hein
Postmaster
Reged: 11/02/03
Posts: 6683
Loc: 26.06.08N, +80.23.08W
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Quote:
Quote:
You're completely welcome anytime! We have a Public Viewing Night every Saturday, or if you know you're going to be in the neighborhood just give me a buzz - PM or email or if you ask in either you can get my cell too.
Thanks...its just a manner of arranging clear skies and free time at the same time! 
You're welcome any time!
Charlie
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Weston CSC:
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Jeff55
sage
Reged: 04/14/05
Posts: 302
Loc: Boston MA
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This is just the sort of heavy duty Alt/Az mount I'be been looking for and is NOT commercially available...looks like a very smooth mount (just based on all the bearings alone).
Great job just wish something like it were available to buy.
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Jeff Kurtz
Celestron C9.25
WO Megrez 90
Denk Binoviewer
Leica 14mm/22mm Eyepieces
Meade 40mm UWA
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Ca_F2
sage
Reged: 07/30/05
Posts: 254
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Mike, Cris, Jeff,
Thanks for the positive comments. The mount is a prototype so no formal drawings exist, just a bunch of “back-of-the-envelope” sketches and parts lists. I’m actually currently working on a second version to fix a few bugs and make some improvements. For example, the clutches as they exist now, though reasonably smooth, are really more suited as shaft locks. I’m designing some large surface area disk clutches, as well as adding worm gears for slow motion and encoders for DCS’s.
I know what you mean about finding a heavy duty Alt-Az, which is why I used large diameter needle thrust and radial bearings throughout, as well as trying to keep all of the moment arms as short a possible. I don’t know exactly what the maximum useable load capacity of this mount would be, but there is absolutely no flexure or vibration detectable with my Tak FS-102, even in an extremely unbalanced configuration.
As for making something like this available in some kind of limited production in the future, who knows, I’ll just have to see how well the next one works…
Thanks again
Derek
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Topcat
sage
Reged: 02/25/04
Posts: 352
Loc: RI
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Thanks Derek
If you need any formalized drawings let me know....I use solidworks for designing automated machines. I'd be glad to help in development as I would love to have an Alt az mount that heavy. Do you do your own machining? Again, great idea and nice workmanship.
Cris
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Stellarvue Nighthawk
Stellarvue 80/9D
WOZS66 SD
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Jeff Young
Post Laureate
Reged: 08/04/05
Posts: 3261
Loc: Ireland
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Derek --
Instead of moving to disk clutches, have you tried your current design with Delrin instead of (what appears to be) brass?
-- Jeff.
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Nikon 18x70s / UA Millennium Colorado:
Solarscope SF70 / TV Pronto / AP400QMD Coronado SolarMax40 DS / Bogen 055+3130
APM MC1610 / Tak FC-100 / AP1200GTO Tak Mewlon 250 / AP600EGTO
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Ca_F2
sage
Reged: 07/30/05
Posts: 254
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Thanks Jeff,
That's a good idea - it would be worth experimenting with that a little.
Derek
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Bill Cowles
professor emeritus
Reged: 04/16/06
Posts: 667
Loc: Utah
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My C6-R on a Helix mount, much easier to use for public star parties.
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Lunt LS60TS50DS/B1200/FT (on order)
TV Gensis/Solarmax 60 filter
PST DS/Herschel Wedge/C4-R
C6-R /Atlas Goto/Moonlite CF2
12" LightBridge/Round Table
MCHP/8" Orion OTA
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Adolfojose
super member
Reged: 02/07/05
Posts: 191
Loc: Managua,Nicaragua
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My new Lapides modified Takahashi Teegul mount
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Adolfo
10" SCT MEADE LX50
TV Pronto on Tele-Pod Tripod and Tele-Pod Head
TV 85 on Takahashi Lapides Modified Teegul Mount over a 475b Bogen Tripod
Takahashi 102II(NSV)on WO EZ Touch Mount over a Oberwerk Wooden Tripod
Denkmeiker II Binoviewer
Stellarvue BV3 Binoviewer
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BradH
Pooh-Bah
Reged: 06/19/04
Posts: 1008
Loc: Spencer, Indiana
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I got my AP900 this week and got it installed today. Iam missing the DOVELM16S so mounting the scope will have to wait.
Brad
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AP 140mm f7.5 StarFire
AP 900 GTO
PST goto Meade DS mount
Mallincam Hyper Color Plus
Skyshed
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BradH
Pooh-Bah
Reged: 06/19/04
Posts: 1008
Loc: Spencer, Indiana
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One more. I will update when the scope gets mounted.
Now that its here we are going to get a big winter storm sorry  
Brad
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AP 140mm f7.5 StarFire
AP 900 GTO
PST goto Meade DS mount
Mallincam Hyper Color Plus
Skyshed
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Rinaldo
Pooh-Bah
Reged: 06/28/04
Posts: 1008
Loc: Lawng-eye-lind - New York, USA
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Sweet mounts! Brad, the carpeted pier is a very nice touch  I bet if you constructed this back in '76 we would be seeing shag carpeting??? 
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Yea Haa?
Two eyeballs
AP 5.1" f/6 on a GM-8 -- The Instrument
10" f/4.8 Newt on a Dob -- Marcia!! Marcia! Marcia!!!
12.5" f/4.5 Portaball -- The Cojone
10x70 FMT-SX
7x50 FMTR-SX
A few Nags & Rads
Hauppauge, NY - 
RMSP, NY - 
Montauk, NY - 
CSSP, PA - 
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BradH
Pooh-Bah
Reged: 06/19/04
Posts: 1008
Loc: Spencer, Indiana
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Quote:
Sweet mounts! Brad, the carpeted pier is a very nice touch I bet if you constructed this back in '76 we would be seeing shag carpeting???
with orange and yellow
The best thing about the carpet is taking your shoes off in the summer.
Brad
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AP 140mm f7.5 StarFire
AP 900 GTO
PST goto Meade DS mount
Mallincam Hyper Color Plus
Skyshed
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dietmar
Carpal Tunnel
Reged: 01/21/05
Posts: 2055
Loc: linz, austria europe
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hi folks,
I think I`ve got another interesting mount to add to this cool thread:
MOUNTEGRA
"she`s" a sigle arm fork mount, carries 50 kg easily, needs no counterweights and is superstable!
a real dream !
manufactured by
GEMINI
Andras Dan is a specialist in mount design nad this was his masterpiece!
MOUNTEGRA
the short horizontal arm is movable and therefore adjustabe in its bearing so that there is no need for any counterweights at all.
the long vertical arm can be altered in height also.
when I decided to pick a 9" TMB Apo designed as a folded refractor I sure wanted a fork mount for its comfortability!
I did no longer want to bounce around a german eq-mount and bump my head in the dark on the counterweightshaft... 
wanna learn more about that mount?
I have written a short report - FYI:
REPORT and IMAGES
I hope You like it - I sure DOOO!
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clear skies,
Dietmar
www.stargazer-observatory.com
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Astrolupa
member
Reged: 07/14/05
Posts: 82
Loc: Algarve, Portugal
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And here's my mount holding the 10" Schimdt-Newton and piggybacked 70mm refractor. Intes-Micro Alter D6 fitted with an AWR Go-To drive system. Built like a tank like all Russian made astro stuff. (and weighs like a tank too!  )
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Best Regards,
Nelson Viegas
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LXD55 10"
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BradH
Pooh-Bah
Reged: 06/19/04
Posts: 1008
Loc: Spencer, Indiana
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I got the TMB mounted to the AP .
Brad
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AP 140mm f7.5 StarFire
AP 900 GTO
PST goto Meade DS mount
Mallincam Hyper Color Plus
Skyshed
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Strgazr27
Scope Junkie
Reged: 10/04/04
Posts: 6136
Loc: StonyHill Observatory
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Hey Brad,
NICE! Should be a pretty lethal combo Looks real nice also.
CS's
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Bobby
StonyHill Observatory
Atlas w EQMOD
Vixen R200SS
Orion ED-80
AT-111
AT66-ED
QHY-8
SSAG
YAHOO TMB 130SS Group
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BradH
Pooh-Bah
Reged: 06/19/04
Posts: 1008
Loc: Spencer, Indiana
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Quote:
Hey Brad,
NICE! Should be a pretty lethal combo Looks real nice also.
CS's
I spent sometime doing a polar alignment last night. The problem is was 1 degree so I only got a ruff alignment. Its going to have to warm up a little before I can enjoy using it. I just dont work to good in the cold. 
Brad
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AP 140mm f7.5 StarFire
AP 900 GTO
PST goto Meade DS mount
Mallincam Hyper Color Plus
Skyshed
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Sky Captain
Scope Builder
Reged: 11/07/04
Posts: 5785
Loc: Washington
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Here is a shot of my custom EQ6-Atlas \ G11 tripod mount.
The minimum height to the top of the saddle is 5 feet. With the legs extended and the pier extension (not shown), it moves the saddle height up to 7 feet.
This really helps when using the 105mm F15 Antares OTA.
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Equipment Overload!
Kerry.
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rick rian
The Lockster
Reged: 08/03/04
Posts: 15562
Loc: The Tundra
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Kerry,
VERY nice looking mount!
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Rickster
NexStar 8i, TV85, Canon 15x50is
Time is precious, waste it wisely.
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BradH
Pooh-Bah
Reged: 06/19/04
Posts: 1008
Loc: Spencer, Indiana
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Kerry that looks like a rock solid combo. Very nice.
Brad
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AP 140mm f7.5 StarFire
AP 900 GTO
PST goto Meade DS mount
Mallincam Hyper Color Plus
Skyshed
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