Re: AP1100 park position question
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If the price difference is not large, one may as well go for the 1500# column. As they say, how big is big enough! Don Anderson
On Friday, April 23, 2021, 07:55:51 a.m. MDT, Jack Huerkamp <mallincamusa@...> wrote:
Don,
It should be adequate. A friend of mine used a single 1000 Newton DL2 for his observatory and he had a Meade 14 on a Celestron CGX mount. It worked well. I opted for a dual column and I placed the colums with their long dimensions in the East-West position for additional lateral stability. That worked well when I had a CGX mount and a 10” RC on top. When I switched to the AP1600 with Lunt 152 and VRC-16, and all the needed 180# of counterweights, I exceeded the lifting capacity of the dual 1000 Newton system. It still worked but I wanted it to have a positive factor of safety as well as longevity. So I went with the 2500 Newton columns. There was not a substantial price difference in the columns. What does change is the speed of lift. It use to take about 20 seconds to fully elevate the 1000 Newton columns. The 2500 Newton columns take over 40 seconds. Not a big difference, especially once the columns are elevated, they are generally left elevated until I close up for the night.
Also, you can make sure the columns are synchronized. You lower them fully and they stop moving. You then depress the down button again and you will see a slight dip and rebound in the columns. That is them resetting. This keeps them in sync.
Yours truly,
Jack
Jack Huerkamp Jack's Astro Accessories, LLC 38388 Pine Street Pearl River, LA 70452-5192 985-445-5063 30.37N 89.76W
All of us get lost in the darkness. ………………………………….Neil Peart
From: main@ap-gto.groups.io <main@ap-gto.groups.io> On Behalf Of Don Anderson via groups.io
Sent: Thursday, April 22, 2021 3:44 PM To: main@ap-gto.groups.io Subject: Re: [ap-gto] AP1100 park position question
Thanks for the info Jack. I would be lifting an AP900 with a 5" refractor and associated guide and finder scopes, cameras and controllers. All told about 90 lb. I may at some point get a 10" or 12" CDK or a larger 160 -175mm refractor. This may push the total weight to maybe 120lb or so. Would a 1000 be good enough? Is there much of a price difference between them? Don
Don Anderson
On Thursday, April 22, 2021, 12:39:42 p.m. MDT, Jack Huerkamp <mallincamusa@...> wrote:
Don,
Note that the DL2 is available in three thrust capacities – 1000 Newton, 1500 Newton and 2500 Newton (220#, 333# and 555#). I am using a dual column system so I went from a 440# lifting capacity to a 1111# lifting capacity.
Yours truly,
Jack
Jack Huerkamp Jack's Astro Accessories, LLC 38388 Pine Street Pearl River, LA 70452-5192 985-445-5063 30.37N 89.76W
All of us get lost in the darkness. ………………………………….Neil Peart
From: main@ap-gto.groups.io <main@ap-gto.groups.io> On Behalf Of Don Anderson via groups.io
Thanks for the info Jack. I suspected as much. I checked ebay and they don't show and DL2s right now. I will have to keep my eyes open for one.
Don Anderson
On Wednesday, April 21, 2021, 07:51:02 a.m. MDT, Jack Huerkamp <mallincamusa@...> wrote:
Don,
When I purchased the original pair of lifting columns from Linak, I was over the engineering department of the local public works department in New Orleans and we did a lot of custom fabrications for all of our facilities. As such, I was able to have them sell me two 1000 Newton columns and the associated controls. Since I was already an established customer, I was able to get an upgraded set of 2500 Newton columns and associated controls last year.
I do not think Linak sells to the general public.
Yours truly,
Jack
Jack Huerkamp Jack's Astro Accessories, LLC 38388 Pine Street Pearl River, LA 70452-5192 985-445-5063 30.37N 89.76W
All of us get lost in the darkness. ………………………………….Neil Peart
From: main@ap-gto.groups.io <main@ap-gto.groups.io> On Behalf Of Don Anderson via groups.io
Jack Did Linak sell direct to you?
Don Anderson
On Tuesday, April 20, 2021, 09:36:40 p.m. MDT, Jack Huerkamp <mallincamusa@...> wrote:
Christopher,
The company is Linak out of Kentucky and the columns I used were the DL2 2500 Newton rated. My original ones were rated at 1000 Newtons each when used with a non AP mount. With the AP1600 and 150# of equipment on the dual column setup, I changed to the 2500 Newton thrust each – 5000 Newton total thrust.
DL2: Robust lifting column for desks, workstations and kitchens (linak-us.com)
Yours truly,
Jack
Jack Huerkamp Jack's Astro Accessories, LLC 38388 Pine Street Pearl River, LA 70452-5192 985-445-5063 30.37N 89.76W
All of us get lost in the darkness. ………………………………….Neil Peart
From: main@ap-gto.groups.io <main@ap-gto.groups.io> On Behalf Of Christopher Erickson
Lymax columns. A lot cheaper to buy Lymax off of Ebay or wherever and make your own telescoping pier.
On Tue, Apr 20, 2021, 9:27 AM Worsel via groups.io <bryancashion=yahoo.com@groups.io> wrote:
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