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  #1  
Old 30-08-2007, 07:19 PM
Shawn
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Piers and Sand...

As some of you know , I built a pier last year for the 14" er, At the time I over enginerd the project or so I thought..

Now the nuts and bolts are, I remember being advised by another member here about the pro's of filling your pier with sand. Own up if your reading this, I should have listened...What a difference it made to my pier...

Thank you....

S
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  #2  
Old 31-08-2007, 12:24 PM
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csb (Craig)
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I gather then that you have less vibration. Great!

I have a tripod with aluminium legs and have been thinking of doing the same.

Or would it be better to get steel legs?
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  #3  
Old 31-08-2007, 02:15 PM
Shawn
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Im not sure about that Craig, In fact im not entirely sure that vibration was the issue, the pier was about 150kg empty now I guess it to be around the 300 mark I put 8 buckets of sand in it at about 20kg a bucket. What exactly has happened Im not sure...but its a good thing..

It may be just a function of added mass, putting everything under stress so that any movement firstly has to overcome the stress... dunno...
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  #4  
Old 31-08-2007, 03:04 PM
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rogerg (Roger)
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I'm not sure if it was me or not, but I would have likely commented something about filling a pier with sand. It's what I've done to dampen the high frequency vibrations I used to have in my steel pier. Worked well too.
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  #5  
Old 31-08-2007, 03:57 PM
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Astroman (Andrew Wall)
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Yep filling the pier with sand is a good step. I filled mine with foundry sand and have not looked back, best thing you can do for a pier.
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  #6  
Old 31-08-2007, 04:21 PM
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Robert_T
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Quote:
Originally Posted by csb View Post
I gather then that you have less vibration. Great!

I have a tripod with aluminium legs and have been thinking of doing the same.

Or would it be better to get steel legs?
Craig, I once went through this will aluminium tripod with an EQ5 on top, I meticulously filled and packed every leg with sand, rigged up a complex of braided cable and turnbuckles, fitted another tray (wooden) etc and at best it took 10second down to 7 or 8 of wobble.

Your best bet for tripod stability I believe are heavy wooden legs. The damping time is generally quite good with these.

Piers of course are something else and will benefit from sand.

cheers,

Rob
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  #7  
Old 01-09-2007, 01:21 AM
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csb (Craig)
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So the old technology still is great.

I have been wondering why some of the good quality mounts had wooden legs.

Thanks.
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