ripper choke

clankenstein · October 15, 2011, 02:53:32 PM

hi guys,does anyone know where to source a ripper choke?i made the mid range cricuit using the choke in my eb2 and it works great in there,i think it might be just what i need in my eb4l.

sniper · October 15, 2011, 03:14:53 PM

curt novak can wind you one if he has any bobbins left

just google his name it will list his site

clankenstein · October 15, 2011, 09:54:18 PM

thanks, i have sent him an email..

SGD Lutherie · December 18, 2011, 05:20:43 PM

The choke was made around a steel bolt, a washer and a nut. That was a Bill Lawrence design. He used the same choke in the L6-S. It's a humbucking choke, having two coils wound in opposite directions. The bolt acted as a core to the inductor.

exiledarchangel · December 19, 2011, 03:44:57 AM

Do you know what kind of wire and how much turns on this thingie? That could be handy!

edit: Just found this very interesting project. http://bigcat.fhsu.edu/biology/cbennett/rippercopy.html

SGD Lutherie · December 19, 2011, 07:25:44 AM

Quote from: exiledarchangel on December 19, 2011, 03:44:57 AM
Do you know what kind of wire and how much turns on this thingie? That could be handy!

edit: Just found this very interesting project. http://bigcat.fhsu.edu/biology/cbennett/rippercopy.html

That's interesting. I wouldn't have thought it used 42 gauge wire, but who knows? I'll have to try winding one and see how it goes.

Maybe I'll drop Bill Lawrence a line and see if he can shed any info on the inductor. It might be very similar to his Q filters.

sniper · December 19, 2011, 08:06:08 AM

this coil works very well:

Cosmo Part Number: 2786-0
Part Description: Standard round core bobbin
Quick-Ship Part?: No - Variable stock may be available. Please inquire.
Part Dimensions:
Core Diameter   Flange Size   Length   Wall
Front     Middle     Rear
.251   .640    dia.    .720    .040
No Middle Flange

one made for me by Curtis to 2.65 kohm dcr (the one that appears light blue) using the Cosmo bobbins:

this switch works very well too and it is cheap:

but modify it to look like this:

exiledarchangel · December 19, 2011, 11:52:17 AM

Q-filter is 3H, so those are close.

Barklessdog · December 19, 2011, 03:08:07 PM

Ripper choking

SGD Lutherie · December 19, 2011, 09:02:11 PM

Quote from: sniper on December 19, 2011, 08:06:08 AM
this coil works very well:

Cosmo Part Number: 2786-0
Part Description: Standard round core bobbin
Quick-Ship Part?: No - Variable stock may be available. Please inquire.
Part Dimensions:
Core Diameter   Flange Size   Length   Wall
Front    Middle    Rear
.251   .640    dia.    .720     .040
No Middle Flange

Where do you get that? Can you share a link?

[EDIT] Never mind, I found them.

This could come in very handy!