Help ARCA B1 lock up

**michael Allen** · 26-Nov-2004, 07:56

My B1 has locked up and I can't seem to get it to move. Any suggestions would be appreciated.

**J. Wolfe** · 26-Nov-2004, 08:09

According to this article, you should tighten the large knob:

http://www.nikonians.org/html/resources/non-nikon_articles/arca_swiss/arca_swiss_b1_1.html

**Donald Hutton** · 26-Nov-2004, 08:23

Here's the definitive guide to your ballhead: http://www.precisioncameraworks.com/Pages/monoball_core.html

**Claire Curran** · 26-Nov-2004, 10:40

Hi Michael, Some B1s were manufactured with a bad collar. You may have one of these. Call Precision Cameraworks and speak with one of their technicians. Arca-Swiss, through Precision, is replacing these collars for free, if they are still near their warranty. I recently had mine replaced by Precision for free. They did a great job and I now have absolutely no problem with my B1. If you have a bad collar, no amount of untightening and fiddling with the tension knobs will help. Believe me, I tried everything before I gave up and sent it to Precision.