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Pier mounted my Takahashi EM-400

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#1 Nocturnal

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Posted 16 March 2011 - 05:03 PM

Hi,

weather finally allowed me to beef up my existing pier to accept my new (to me) EM-400. I had an adapter made at emachineshop and secured it with 4 ends of stainless 1/2" threaded rod. It wasn't a big deal.

http://www.carpephot...w=article&id=26

You don't remember but I received some criticism on the state of my previous pier when I first reported on it. Concrete wasn't the right type and all that. Too dry and crumbly. Well I can tell you that while the pier wasn't particularly pretty it was super duper strong. I tried to chisel part of it away before enforcing it and had a hard time taking of chips. Concrete really is quite amazing material. Incredibly cheap (talking about hand mixing bags from your home store, delivery I'm sure is more $$) and much much stronger than what we need for mounting a few hundred (if we're lucky) pounds of astro gear.

Anyway. I may leave the tube around the concrete so no one can tell me it doesn't look right this time :)

Sander

#2 David Pavlich

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Posted 16 March 2011 - 05:53 PM

Hey Sander...really nice execution! That's going to be a solid setup. :bow:

David

#3 g__day

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Posted 17 March 2011 - 06:23 AM


Pictures?

#4 Nocturnal

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Posted 17 March 2011 - 07:58 AM

@g__day: Eh, I provided a link. Did the pictures not load after going to that page?

@David: Thanks!

#5 Alfred Tan

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Posted 01 May 2011 - 06:07 PM

Hi Sander,

That looks like a great pier. How's the progress?

I am thinking of buying an EM500 and making a pier for it. Do you know if the adaptor for yours fits a EM500?

Best of luck to your project.

Alfred

#6 Nocturnal

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Posted 01 May 2011 - 11:58 PM

Hi Alfred,

the progress is that my mount is on the pier and it works great! In about a week I'm mounting my new Edge HD11 and then we'll see what this setup can really do.

Sorry, I don't know about the EM-500. My adapter is made for this part: http://www.landseask...roducts_id=1454 which is listed specifically for the EM-400. You could ask Takahashi if it fits the EM-500. I'm afraid it won't.

#7 Alfred Tan

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Posted 02 May 2011 - 03:15 AM

Thanks Sander. I must say that there is almost next to nil literature (manual) on EM-500 and its accessories like pier adaptor etc. Wonder why non-Japanese people are still buying this product.

#8 Bachus

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Posted 02 May 2011 - 03:54 PM

Hi Sander

Don't mind me asking price wise what did that piece cost you? I'm woring on getting my ideas for a Atlas mount and this has perked my interest. Nice looking little (yea right) setup.

#9 Nocturnal

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Posted 02 May 2011 - 03:55 PM

Hi Kenny,

it was less than $200 not counting the time it took me to design it.

#10 BPO

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Posted 02 May 2011 - 06:52 PM

I must say that there is almost next to nil literature (manual) on EM-500 and its accessories like pier adaptor etc. Wonder why non-Japanese people are still buying this product.


Probably because it's a very good mount. ;)

#11 fetoma

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Posted 03 May 2011 - 11:43 AM

That is one beautiful mount you have there Sander!!! :bow:

#12 Nocturnal

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Posted 03 May 2011 - 12:04 PM

Thanks Frank, I'm proud of it! Also glad I got it approved by the War Department in about 30 seconds. It probably helped we just stuck an $80K kitchen in the house :)

#13 bardo

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Posted 03 May 2011 - 06:52 PM

what size was you old pier if you don't mind me asking?

#14 Nocturnal

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Posted 03 May 2011 - 08:44 PM

the old pier was 8" above ground. Bigger below but I didn't measure it with any accuracy.

#15 Bachus

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Posted 05 May 2011 - 09:43 AM

One more question if you don't mind Sander? How did you come up with using a 1/2" plate as to say going 3/4" or even 1"? That's a good size mount and weight let alone when everything gets added.

I'm working on a bottom plate idea for my Atlas but "if" I get a bigger mount I just want to be sure it's covered. man that mount really looks good though.

#16 Nocturnal

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Posted 05 May 2011 - 12:26 PM

No real reason other than cost. At some point there's no benefit in making things stronger and when you look at the design you see the 4 corner bolts are really close to the central ring. That means that any force applied (it's minimal anyway) has a short arm which results in little torque. I think you underestimate the rigidity of 1/2" aluminum :)

In any case, you can put the mount on the central mounting disk and it will stay put securing any of the set screws. That indicates balance and hence only force downward and not sideways.






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