I need a cymbal mount for my 20" Rogers Bass (Holiday). I thought a floor tom leg mount would also fit, but it doesn't.
Obviously there's a diference, or what?
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There was a change at some point early on with a very slight difference in spacing with the bolt hole slightly more to the outer edge of the mount plate, but barely different. The picture of the mount holes in your picture looks like the center hole is not actually in the center, maybe suggesting an owner modification and not factory. Compare the other mount on the shell to see if the pattern is the same.
From the point of view of the picture, the mount on the right (the one with the center hole) is for a collet plate - to mount the tom. The mount on the left is for a knobby mount like the one in your photos. It is indeed for a cymbal l-arm. If the holes don't line up, the shell is probably a little later than the mount. What vintage is the drum? It's got the later t's and claws, the mount looks like an earlier one.
Bobby Chaisson at The Drum Farm might have one. Of course, you could enlarge the holes in the shell a little to get the bolts in...
You do in fact have a floor tom leg mount, and not a proper knobby for the cymbal arm. But what the others have mentioned is application too. The knobby cymbal mount has essentially no space between the plate and the clamping part. The floor tom leg has the distance between the two in order that the leg will clear the hoop of the drum. The leg mount is not a good choice to use as a cymbal mount, because the distance between the clamping part and the plate will tend to induce more torque into the mount and it will fail earlier than the proper one.
You do in fact have a floor tom leg mount, and not a proper knobby for the cymbal arm. But what the others have mentioned is application too. The knobby cymbal mount has essentially no space between the plate and the clamping part. The floor tom leg has the distance between the two in order that the leg will clear the hoop of the drum. The leg mount is not a good choice to use as a cymbal mount, because the distance between the clamping part and the plate will tend to induce more torque into the mount and it will fail earlier than the proper one.
That is indeed true. But after a while they discontinued using the short mount and used leg mounts instead. And when the cast leg mounts arrived in the early 70's, they used those for the cymbal mounts too. This bass has the later t's and claws, it's probably a '68, maybe later. That style mount should fit, but if it doesn't, then the mount itself is too early a model for the holes in the shell.
If the hardware shown with the mount is original to that mount, those square nuts indicate a very early mount from the b&b era. In that case, the holes in the mount won't line up with the holes in the later shell.
Okay, thank you. Drilling extra holes is out of question.
So I have to look for the right one.
