Ideal DIY mesh head + trigger for Megadrum

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Ideal DIY mesh head + trigger for Megadrum

Postby Mookie » Tue Jun 02, 2009 1:10 am

What would be the ideal combination of trigger and mesh material for megadrum?
27mm piezo with poron super soft foam and pet screen/solar screen sounds good?
What would be the best shape for the foam? Cone? wedding cake?
What about the size of the foam? height?

Thanks
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Re: Ideal DIY mesh head + trigger for Megadrum

Postby Rubis » Tue Jun 02, 2009 2:34 am

On the Vdrums forums, they tend to agree that 27mm piezo with a poron soft or super soft (usually personal prefference) cone of 1 3/8" or 1 1/2" (roland cones are 1 3/8", but you can use one sheet of poron to make 1 1/2" cones which seems to work fine) with solar screen heads, people have also used pet screen with good success, but you may need additional layer(s). I can't remember the other dimentions for the cones.

This is taken from research on the vdrums.com forums. I have not tested any of this personally. Yet.
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Re: Ideal DIY mesh head + trigger for Megadrum

Postby gastric » Tue Jun 02, 2009 11:02 am

Consider a reflection plate design.Much simpler than the crossbar-and-cone design. And likely to be much more successful at providing good triggering without unwanted ghost/double triggers.
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Re: Ideal DIY mesh head + trigger for Megadrum

Postby Rubis » Tue Jun 02, 2009 2:20 pm

Very true what gastric said about reflection plates, but if Dmitri ever adds positional sensing, you will want a cone, at least if he does it similarly to the way Roland does theirs.
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Re: Ideal DIY mesh head + trigger for Megadrum

Postby kurtus420 » Tue Jun 02, 2009 2:58 pm

If hotness is possibly an issue you should definitly go for the super soft poron foam with adhesive backing, jmanword over at the vdrum forum has determined that this is the key to having pads that are not too hot. I would make it 1 3/8" high for stability though 1 1/2" is fine and use 27mm head and rim piezos. Good luck, Kurt. 8-)

ps, take a look at superscreen, it is just as strong as pet screen only it's a third of the thickness.
Here are the cones I bought http://cgi.ebay.ca/ws/eBayISAPI.dll?Vie ... &indexURL= which uses a 35mm piezo, has harder poron foam and has these dimensions 1 1/4" height X 1 3/8" (35mm) base diameter X 3/16" top diameter. I had to install 100k linear pots to reduce the sensitivity on my mesh heads.(diy roland style c/w roland mesh heads 10" and 12") I must say that these cones are made very well and it was easy to compensate for the hotness issue, which was relating partially to my alesis trigger io. I guess I'll see how these cones respond when I get my megadrum up and running, if I was to make my own cones I'd use the super soft stuff with 27mm piezos and I probably wouldn't need the pots.
56 input Megadrum644, Tama Iron Cobra, Taye, Sonor, Roland, Yamaha, Gibraltar, Tascam.
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Re: Ideal DIY mesh head + trigger for Megadrum

Postby gastric » Tue Jun 02, 2009 4:22 pm

FYI - I use super soft Poron DIY cones, 27mm piezos, 1-ply Solar90 screen heads, still hot. And still double/ghost triggers after reducing hotness with resistors. Hence my suggestion for a reflection plate design.

Really, it could be as simple as some MDF or wood board, piezo glued to the bottom, and some sort of rubber material on top to soften the stick noise. That's be extremely inexpensive to produce. Though without any type of acoustic drum feel, if that's your thing.

Just sharing alternatives. Which, based on very brief testing of sticking a peizo to MDF, should be much easier to produce and with better overall results.
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Re: Ideal DIY mesh head + trigger for Megadrum

Postby kurtus420 » Tue Jun 02, 2009 5:28 pm

Gastric, I wonder if a stiffer 2 ply meshhead at high tension would reduce some of the gain? Thanks for sharing your experiances with this matter. :D I was also thinking about the reflex design, which I've used to convert remo pads and achieved good results, can you achieve positional sensing with this design?
PS sorry to kind of hijack this thread, but this may be useful info :?:
56 input Megadrum644, Tama Iron Cobra, Taye, Sonor, Roland, Yamaha, Gibraltar, Tascam.
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Re: Ideal DIY mesh head + trigger for Megadrum

Postby gastric » Tue Jun 02, 2009 6:29 pm

My personal goal is simply perfect triggering. Positional sensing would simply be a bonus.
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Re: Ideal DIY mesh head + trigger for Megadrum

Postby kurtus420 » Tue Jun 02, 2009 7:05 pm

Gastric, I definatly agree though I really want positional sensing if it becomes availible, I guess i'll have to stick with using pots or resistors but I'm not sure if I'll have double triggers when I get my megadrum working. I never did look at it through midi-ox when I had my trigger io to chech for ghost notes, I just assumed that there were none, atleast I couldn't hear any.
56 input Megadrum644, Tama Iron Cobra, Taye, Sonor, Roland, Yamaha, Gibraltar, Tascam.
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