#1
Is there a product that is a delay pedal where the speed or feedback level is operated by a wah pedal type foot rocker? I want to replace the insides of a wah pedal with delay and have the rocker(or whatever it is actually called) control the speed knob. Is this already out there?
#2
Yeah, in this case it would be called an expression pedal, not a wah, and tons of delays have the feature. The delay is not housed in the rocker, you just use an expression pedal (cheap rocker control unit) plugged into the bigger delay box. That way you can use it with or without the expression control, save space if you don't need it, or leave the pedal offstage and just use the expression pedal for control. Plus it's pretty awkward to get knobs, smaller controls, and readouts on a wah enclosure.

Most of the newer Line 6 and Boss delay lineup have the feature in some form or another (DD-7, DL4, assignable exp on all the major multi-fx units). It's a very common feature on higher-end, new-ish digital delays. Eventide, Strymon, Source Audio, all the full-featured recent stuff is going to have it.
#3
Quote by Roc8995
Most of the newer Line 6 and Boss delay lineup have the feature in some form or another (DD-7, DL4, assignable exp on all the major multi-fx units). It's a very common feature on higher-end, new-ish digital delays. Eventide, Strymon, Source Audio, all the full-featured recent stuff is going to have it.

Not just digital stuff - a lot of the pricier analogue delays on the market have it too. EHX have several - the tap tempo Memory Man pedals and the Deluxe Memory Boy let you control wet/dry mix, modulation rate and depth, feedback or delay time with an expression pedal, while the basic Memory Boy model will let you control modulation rate or delay time. Way Huge's Supa Puss lets you control the delay time. Moog's Minifooger delay will let you control the delay time or the feedback. Ibanez' Echo Shifter has a slider you can gingerly poke with your toe.

Possibly most impressive of all the analogue options in this regard (in most regards, really) is the Moogerfooger delay. At $700 it's not exactly cheap, but if you have five feet (or a couple of enthusiastic volunteers) it'll let you control delay time, modulation rate and depth, wet/dry mix and feedback all at the same time.

So the Moogerfooger goes a bit beyond the average, but even so expression pedal control on higher-end analogue units is pretty widespread these days (far from ubiquitous, but easy to find if you want it).