I recently took a Wimberley head, Manfrotto Super Clamp, D3x and 500VR to Africa. I can't handhold the beast not lest as I recently shattered my left wrist. So clamp went onto 4x4 bar, with Manfrotto brass stud to screw Wimberley to it. Load from camera kit caused the stud to strip the threads out of the clamp in less than a day. Is there anything on the market which might be tougher as a clamp or am I going to have to have something made up? Help! (please) Robert
It appears the Manfrotto Super Clamp is designed to be used with studio lights, strobe lights, and backdrops. Adorama's description
"This is the original Super Clamp that has thousands of uses! No camera bag should be without the Super Clamp. This universal clamp can be securely mounted on any tube from .5" to 2.1". Supplied with a unique wedge insert for clamping onto flat surfaces. A built-in socket allows the use of over 30 attachments to hold anything from backgrounds to lighting fixtures. Stud included."
Brass is a pretty soft material and I would expect that the camera and lens is more weight than most lighting equipment. B&H has a E600C Snap-In Pin for Super Clamp, Steel - 5/8" which should be a stronger mount. But at 15+ pounds, I would be looking at a much sturdier mount.
You are looking at 15 lbs or more of static weight and on a moving vehicle will increase the active weight, you should have a very sturdy and strong clamp
You could also take a 2x4 board with a 1/4" hole through the board for a 1/4" #20 bolt to mount your camera or a ball head to and then clamp the 2x4 and camera to the 4x4 bar with a "C" clamp or "U" bolts. You could also have a 3x8" or 1/4" steel x 2" steel bar drilled and tapped for a 1/4" #20 bolt then bolt you head and camera to the bar and then clamp the steel bar to the 4x4.
Did you use a bushing (3/8-1/4) to mount the superclamp to the Wimberley? If so then remove it and give it the heave-ho. Start with a Manfrotto 208 3/8" head mounting plate in the super clamp. The round plate should help spread out the load. The 3/8" thread into the Wimberly should be stronger than your oem 1/4".
I used the Manfrotto brass bushing. It survived but stripped out the thread on the Superclamp's socket. I will try the plate suggestion. I have found a Novoflex clamp, but the drawback is that it has a 1/4 thread, not 3/8. If it's changeable then I am OK. If not, I will keep Googling or find a local engineer that has some space for small bits of work. In the recession it should not be too hard. As usual, my thanks to you all for practical ideas. Robert