Become a Site Supporter and Never see Ads again!

Author Topic: TSKB: Locking cam lever bolt to replace set screw - cheaper/better options?  (Read 475 times)

0 Members and 1 Guest are viewing this topic.

Offline voltronic

  • Trade Count: (27)
  • Needs to get out more...
  • *****
  • Posts: 2407
  • Gender: Male
I've been using an Impact Back Light Stand base for my DIY carbon fiber stand.  The base itself is great, but the plastic-handled set screw (which holds the 5/8 pin in) doesn't like to stay tight.  No matter how much torque I apply, or regardless of if I wrap the pin with a little gaff tape, it will not reliably stay tight through an entire concert.  Until now, I've only used the Impact base with the ultra-light carbon fiber / DPA 4061 setup, but I'd like to also use it with the Manfrotto 099b pole in the future and at this point I don't trust it to stay put.

What I want is something that will stay tight and locked down, while still allowing quick setup and tear down.  A tension spring on the set screw doesn't seem like it would do much, so I'm looking into a "cam lever" like those below.  I have a couple cheap clamps with tightening systems like this, and they absolutely don't move unless you want them do.  The stock Impact set screw appears to be 1/4-20 thread, and all of these vendors stock that size with bolts of various length.

So before I proceed, two questions:

1. Does using one of these make sense?  If not, do you have a better suggestion?

2. Is there anyplace that sells these cheaper?  I already tried eBay, and get the same thing as the links below.

Kipp
Berger
Grainger
Fastenal
Rogan
Essentra
Xion - Slightly different solution, made for RC airplanes
DPA 4061 | Line Audio CM3 | Naiant X-Q
Naiant PFAs | Shure FP24
Tascam DR-70D JWMod | Sony PCM-M10

Tascam DR-70D FAQ
Team Line Audio
Quote
I am hitting my head against the walls, but the walls are giving way.    ///    If a composer could say what he had to say in words he would not bother trying to say it in music.
- Gustav Mahler

Offline 2manyrocks

  • Trade Count: (11)
  • Taperssection All-Star
  • ****
  • Posts: 1621
The problem may be that the threads aren't meshing like they should so they can't reach the tension needed to stay tight.  The bolt could be slightly undersized or the threads too loose.  If this is happening, you might try retapping and using a quality threaded bolt.

 

RSS | Mobile
Page created in 0.088 seconds with 24 queries.
© 2002-2017 Taperssection.com
Powered by SMF
Website Design by Foxtrot Media, Inc., a Baltimore Website Company