counter balance weight

[paul cacciapaglia]

I am not sure how much weight I will need to counter balance an AB 1600 and a 22" beauty dish attached to a boom arm. Also, how much weight should I use to help weight down the stand. This is the stand and boom I want to get.

http://www.bhphotovideo.com/bnh/cont...=243718&is=REG

http://www.bhphotovideo.com/bnh/cont...ku=3599&is=REG

Thanks in advance.

[srwatters]

The AB beauty dish is pretty heavy. You might want to weigh them (the light and dish), before you go hoisting them up on a long boom. Once you know the weight of the pair, then some simple physics should help you determine the weight needed to balance it based on the extended length of the boom arm and the overhang. Just remember the shorter your lever, the more counterbalance it will take to achieve balance. Remember Atlas?

[sldi]

Make sure too, that you have strong enough boom arm to handle all this too.. I have heard that the boom that comes from AB is a little light on handling much weight

[harley_jeff]

Paul. get some sand bags and you can vary the weight in them. I'll send you an email with specs.

[bondarnes]

Sand bags are good, I have also used a one gallon milk jug filled with water hung on the back end of the boom.

[kenw]

technically speaking, weigh the dish on the bathroom scale. take that number and multiply it times the #feet you hang it from the pivot point. Them's foot-pounds. If the dish is 50# at 2 ft, that's 100 ft-pounds. remember that number.

you'll need the same foot pounds on the other end to balance it.

so you'll need 100 ft lbs at the other end. That's 20# at 5', 10# at 10', or 100# at 1' or any combination of pounds and feet that makes 100 ft lbs.....

math can be fun!


or not.....(but pay attention to what John said above; in the above the boom has to support 200 pounds!)