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Feisol vs Induro Tripods | |
searchin wrote:
Kerry,
Those photos are really helpful, thanks for the effort.
I'm on the verge of buying a tripod for my M10, i just wanted one clarification as to how does one install the center column on the CT 3442.
Do you have to unscrew the spider and mount the same??
Thanks,
Sachin.
Sachin,
You're welcome. Glad I could help.
Swapping between the flat mounting plate and center column is fast and simple. The flat mounting plate is held in place within a recessed cavity in the spider by three small set screws. To remove the flat plate and install the center column in its place, you simply loosen (but do not remove) these set screws (with the supplied allen wrench), pop out the flat plate, install the center column in its place and re-tighten the set screws. It took me longer to type that than to actually do it. The first time you do it, it will probably take you less than 2 minutes. After that, about a minute. My daughter just timed me with a stop watch and I swapped from flat plate, to center column, and back to flat plate in less than a minute (but, I've had lots of practice).
Here's a photo of the top section of a CT-3442 with the center column installed. You can see one of the small set screws right below the word Feisol.

And, here's a diagram that shows the unfinished spider with the various mount options (center column mount, flat plate, leveling base mount):

You can't really tell from the photos, but the groove in the flat plate (and the center column mount and leveling base mount) have tapered sides - which gives it a wedge shaped profile. Combined with the tapered tips of the set screws, this accomplishes two things.
When the set screws are tightened inward, the tapered tip of the set screws, combined with the wedge shaped mating surface of the flat plate (or the center column mount, if that's what you're using) forces the top plate down snug and tight against the spider. This makes for a very tight, secure connection between the plate (or center column mount) and the spider.
And, since every action has an equal and opposite reaction, the wedge shaped surface of the flat plate is also pushing upward with equal force on the tapered ends of the set screws. This added pressure makes it much less likely that these set screws will come loose due to vibration. This is similar, in principal, to using lock washers to prevent nuts from coming loose due to vibrations. And, since you don't need to remove the set screws to swap between the plate and column, the chances of losing one of these set screws are minimized.
It's a simple, but elegant design that works quite well.
Kerry Thalmann
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