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Advice on reinforcing thin shells for tom mount and cymbal bracket?

Posts: 1685 Threads: 529

Hello,

I have a MIJ 3-ply Gracy kit that I am giving a thorough cleaning and bearing edge job. The shells are obviously 3-ply but they do have reinforcing rings installed. My question is about where the tom holder and cymbal bracket are installed. There is nothing reinforcing them and I want to give them the support they need. I was thinking about just taking some 1/4" plywood and putting it on the inside of the shell, just slightly larger than the mount/bracket for better support. I wasn't planning on gluing it to the shell. I was just planning on drilling holes in the plywood to match the hole configuration of the mount/bracket, and then just using longer screws and large washers to secure the mount/bracket, and keep the wood tight at the same time.

I am not sure if this is the best way or not. Will this way cause buzzing or weird vibrations inside the drum? I have never done this before, so I looking for the best way to go about this.

The shell is structurally fine and in round, I just want to give more support to the tom and cymbal mount so I don't have any problems down the road.

Thanks.

Posted on 13 years ago
#1
Posts: 1459 Threads: 87

Flat piece of plywood not the best idea. It will pull on the shell. Better to find a junk same size shell and cut a piece out of it for this. I have seen more than one company do this reinforcement at the factory. Use fender washers (hardware store) to further spread the load.

Posted on 13 years ago
#2
Posts: 1685 Threads: 529

Thanks for the tip. I don't have an extra shell (of this or any other size) that I can use. Wouldn't plywood be better than nothing, especially if the piece is only slightly bigger than the actual bracket? I know it will pull on the shell slightly, but the cymbal and tom holder will certainly stress the shell much more every time they are hit, bumped, set up etc if they are not supported properly. Also, over time, wouldn't the flat plywood conform to the round shell?

Thanks for the advice, but given the fact I don't have an extra shells, could anyone provide an alternative that might be better than plywood? Also, would anyone recommend polyurethaning the insides of the shells (only in the area around the brackets) to give the wood layers more strength?

Thanks.

Posted on 13 years ago
#3
Posts: 6524 Threads: 37

1/4" plywood wont bend to conform before the shell is damaged by the stress of tightening.

Maybe find a white bucket or whatever color with the same Di. and cut a piece out for a plate, or heat a flat piece of plastic. A flat aluminum plate can be bent easily without heat,...just dress it up so it don`t look Fat Albert !!

It`s a drum,.....Hit It !!

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Posted on 13 years ago
#4
Posts: 1685 Threads: 529

Thanks for the tip, OddBall. Again, I don't know a lot about this, but would plastic or aluminum give me the strength I need on the shell? I know they would conform and bend easily, but wouldn't I want the reinforcing material to NOT bend easily? I'm new at this, so forgive my rather elementary questions.

Thanks.

Posted on 13 years ago
#5
Posts: 4715 Threads: 299

Just take the tom down when you are done, and don't leave the cymbal mounted after a session. Very simple, not a big deal. I own more the my share of 3 ply MIJ kits and this is the best solution. If you really want to make the shell stronger, apply a few coats of lacquer, not poly.

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Posted on 13 years ago
#6
Posts: 5227 Threads: 555

From vyacheslav

Hello,I have a MIJ 3-ply Gracy kit that I am giving a thorough cleaning and bearing edge job. The shells are obviously 3-ply but they do have reinforcing rings installed. My question is about where the tom holder and cymbal bracket are installed. There is nothing reinforcing them and I want to give them the support they need. I was thinking about just taking some 1/4" plywood and putting it on the inside of the shell, just slightly larger than the mount/bracket for better support. I wasn't planning on gluing it to the shell. I was just planning on drilling holes in the plywood to match the hole configuration of the mount/bracket, and then just using longer screws and large washers to secure the mount/bracket, and keep the wood tight at the same time.I am not sure if this is the best way or not. Will this way cause buzzing or weird vibrations inside the drum? I have never done this before, so I looking for the best way to go about this.The shell is structurally fine and in round, I just want to give more support to the tom and cymbal mount so I don't have any problems down the road.Thanks.

Ply-wood piece no..But on many of these 60's M.I.J. set's they came with a thin piece of metal on the inside of the shell under the mounts.This would be the best way to fix this problem..I have a lot of these piece's if you would just post a photo of the mount's and i will see if i have them...Mikey

Posted on 13 years ago
#7
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