CD40106 BBD Clock?

[robmay]

Hey all, I'm trying my hand at making something like the Mid-Fi Random Vibrato, but stereo, and without needing it to be entirely hi-fi. I have a handful of MN3007, as well as the MN3101 clocks for them, and I'd like to make this with as low parts count as possible. Since I'm not worried about full hi-fidelity, I'm thinking of doing basic in and out buffers like on the great John Hollis' Zombie Chorus (http://www.hollis.co.uk/john/zombie.jpg). I'm also planning on using the Pseudorandom LFO from the great RG Keen (http://www.geofex.com/article_folders/lfos/psuedorandom.htm).

Now, my big question: can I use 2 or 3 of the hex inverters on the CD40106 (from the pseudorandom LFO) to replace the BBD clock?

I understand that I can create a basic oscillator, but does it reach the range needed by the BBD?
Can I use one inverter to make the main oscillator, and another to do the other half of the two-phase output?
Does it need extra filtering or buffering that would add parts anyway?
Can I clock two 3007s or only one?

Won't be mad if the answer is no, just throwing some ideas around. Thanks in advance!

[anotherjim]

CMOS logic can usually get up to 1Mhz, although the switching edges won't be very sharp up there. But a BBD only wants up to 100kHz and more like half of that on average, so it should be fine. And the Zombie and other BBD designs use a 4046 to clock with, and that's no speed king.
Getting the LFO to mod the 40106 might take some playing with. It won't be as obvious as the 4046 which has a control voltage input. A Vactrol might be the easiest way.

[Scruffie]

IIRC the A/DA Harmonizer uses them as its clock source.

A 4007 might be handy, use it as a mixer, buffers, the MOSFET's as variable resistors.

[robmay]

Thanks for the replies! Shame that one of the big white whales of the effects business is a reference point, haha. Would love to get my hands on one of them to see!

Scruffie, can you explain a little more about using the MOSFETs as variable resistors? RG Keen has some examples on the LFO page about how to implement it, I was going to play around with those first, but using a 4007 would simplify all of that for sure.

[Scruffie]

If you wanna trace it, I took extensive photographs when I repaired two 

Look at the A/DA flanger clock to see a MOSFET in action as a variable resistor.

[StephenGiles]

I breadboarded a flanger during the 1980s which used a 40106 for both clock and LFO. I can't remember exactly where the circuit came from, it may have been Elektor. If I find it i'll let you know.