Crybaby wah converted into a tremolo.

[Pedal love]

I remember back in the 1970's, there was a guy who made tremolo effects out of Crybaby wah pedals. I read an article about him back then and tried the conversion, but forgot anything else about it after thirty some odd years. The only thing I remember is I added about two resistors. It was really cool as the wah pot controlled the speed and it sounded pretty good, when I tried making the conversion. Thanks.

[petemoore]

  Very cool !
  Trembulatin' tone when striking the string that winds down to slow-trem tone when input gets lower...now, I had a tremolo...you're getting me started again !

[rustypinto]

I did that a few years ago as a custom build for my friend, very cool pedal! I used a dead crybaby with a modified bottom plate (can't see it too good from the pics, sorry). I added extra holes in the side for depth, spacing, and shape/LFO filtering controls.

http://www.flickr.com/photos/youngpedals/2217825194/

http://www.flickr.com/photos/youngpedals/2217825188/in/photostream/

Of the two LEDs showing through the rocker, one is for rate, the other for bypass.

[Pedal love]

I guess what I am trying to say is take a two transistor crybaby circuit, then adding a couple of resistors making it a tremolo. Does anyone have that schematic?

[JKowalski]

I guess what I am trying to say is take a two transistor crybaby circuit, then adding a couple of resistors making it a tremolo. Does anyone have that schematic?

I'd have to take a peek at the schematic, but I HIGHLY doubt adding two resistors to a crybaby circuit would give you a tremolo. How sure are you about this?

Maybe you mean reusing the parts from a crybaby to make a tremolo, with only two more resistors thrown in?

[R.G.]

I have no idea what the "two resistor plus a crybaby equals a tremolo" is, but frankly this is one of those things where if you want a tremolo in a crybaby pedal, why not just go do it?

There's no big mystery there. Any one of several tremolos have a single-pot speed control. Just lay out the perfboard or PCB to fit in the box and wire up the speed control to the wah pot. There will be at least some calculation to do to get the speed control to run on the 100K pot in most wah housings, but that's not too much of a stretch. The EA tremolo should drop right in. So should my mod of an EA trem into a Fender brownface vibrato.

If you want it, just go do it.

[Pedal love]

I'm sorry I was confused and a lot of time has passed. Thank you for your responses, I was just inaccurate of memory.pl