madbeanpedals::forum

Projects => General Questions => Topic started by: MarkL on April 03, 2016, 03:39:52 AM

Title: mounting a 12AU7 tube inside an enclosure
Post by: MarkL on April 03, 2016, 03:39:52 AM
I'm planning to build up a Valvecaster using a nice compact vero layout I found, and there should be plenty of room in the enclosure to place the tube so that it doesn't stick out.  But I have no idea how to mount it securely inside.  Can anyone suggest a few reliable methods or the type of hardware (or MacGuyver-esque hacks) that will do the trick?

Title: Re: mounting a 12AU7 tube inside an enclosure
Post by: JackSkellington on April 03, 2016, 02:35:51 PM
Sorry, I can't help you, but it seems interesting. What is your layout?
Title: Re: mounting a 12AU7 tube inside an enclosure
Post by: galaxiex on April 03, 2016, 03:32:17 PM
Tube socket mounted to a couple of "L" brackets? Maybe?
Title: Re: mounting a 12AU7 tube inside an enclosure
Post by: davent on April 03, 2016, 03:34:15 PM
Mount the socket to a plate, mount the plate to "L" brackets, "L" brackets to the enclosure, haven't done it in a diecast enclosure but have in chassis'.

(http://i216.photobucket.com/albums/cc305/davent/IMG_0371.jpg)
(http://i216.photobucket.com/albums/cc305/davent/IMG_4751.jpg)
(http://i216.photobucket.com/albums/cc305/davent/IMG_3867-1.jpg)

dave
Title: Re: mounting a 12AU7 tube inside an enclosure
Post by: MarkL on April 03, 2016, 10:11:05 PM
Dave, thanks for those pics, that's exactly what I'll try to do.  When you mounted the tubes to those plates, how did you go about finding a plate with a hole that could accomodate the tube socket?  Or...did you drill the hole yourself?  (and if so, what size drill bit should I use if I were to try that?

Is an "L" bracket something I can just ask for at a hardware store, or at a place like Home Depot?  If there's an online resource where I can find them, I'd be grateful for anyone who can point me in that direction.

As for the layout -- I'm just using the one I found at the guitarFX layouts blog for the Valvecaster.  This whole thing is a little scary, but I'm willing to jump into the fray and give it a shot...
Title: Re: mounting a 12AU7 tube inside an enclosure
Post by: davent on April 03, 2016, 10:50:35 PM
For a plate, two are just pieces of 1/16" copperclad pcb and the eyelet board is 1/8" garolite. You could get "L" brackets at a hardware store, Home Depot for sure but i've  lengths of "L" channel aluminum i cut to needed length.

Holes were drilled with a big step bit, different brands of sockets, different sizes.

dave
Title: Re: mounting a 12AU7 tube inside an enclosure
Post by: MarkL on April 03, 2016, 11:55:55 PM
In one of the pics, the tubes have some orange rings around them...they look like shock protection type devices.  Did you make those too?
Title: Re: mounting a 12AU7 tube inside an enclosure
Post by: davent on April 04, 2016, 01:02:31 AM
Quote from: MarkL on April 03, 2016, 11:55:55 PM
In one of the pics, the tubes have some orange rings around them...they look like shock protection type devices.  Did you make those too?

Bought those, silicone "O" rings, vibration dampers in HiFi-speak.

dave