Hi Delorso!

From your provided pictures, I does look like the one collet plate in question has an issue. Almost like the collet has bent the plate a bit. Another plate might be needed to verify this, but that does appear to be the issue. Where are you located?

-Mark

Hi Mark,

I'm in Los Angeles. I also thought it might be bent, but I can't imagine how. It feels very sturdy, to the point where some extreme force would have been needed to bend it in the first place, yet I can't see any other signs of damage that I assume would go along with that. But then again, they're old drums, so who knows what they've seen over the years! I think you're probably right; I'll probably need the just replace the plate and hope for the best...

PM sent. Check your messages!

-Mark

Quick check - try reversing the spurs and see if that makes a difference. Also try switching the collets and see what that shows.

Take the plates off and take a picture of them side by side to check the angles and if one is slightly distorted.

Yeah, I tried swapping the spurs & collets and had the same problem. I'm pretty sure it's the plate, and taking them off and comparing them is a good idea. I'll do that tomorrow. Thanks!

The plate looks flush to the shell at the red arrow, then a gap appears at the green arrow and continues to the end of the plate. That raises the carriage bolt at that end.

Almost 100% certain the plate is bent. The trick will be applying the right clamping and pressure to get it back in shape.

Yes, seeing what you've highlighted in that picture makes me even more inclined to agree with you that it's a bent plate. Mark is actually sending me a spare one he has - yet another reason to love this forum - so hopefully that will solve this. Now it's just a matter of figuring out how this happened! Seems like such a strange thing, considering I can't see any other signs of mis-use, abuse, etc.

Thanks for your input!

Over the many years of its life it's not a stretch to think that the drum might have been dropped or had fallen in such a way as to deform that plate. In the mid 1960s, after our band's two roadies stripped several adjustment fittings on my new Camco set and a few stands I politely asked them to just bring the drum equipment in and out of the van. Then, leave the setting up to me. I managed to "bounce" a metal Slingerland snare drum onto the stage floor which landed squarely on the Zoomatic throw-off.

Yes, I'm sending out a spare bracket that's just been sitting in a box for years! The cosmetics are fair, but the collet is perfect and the bracket isn't bent, so it should work perfectly.

Now, let's see some pictures of your drums! They appear to be green sparkle? Just don't see many Rogers drums in green!

-Mark