EL34 / KT66 SET

What people are working on at the moment
Post Reply
User avatar
pre65
Amstrad Tower of Power
Posts: 21373
Joined: Wed Aug 22, 2007 11:13 pm
Location: North Essex/Suffolk border.

#1 EL34 / KT66 SET

Post by pre65 »

I thought I'd better start a new topic as this will be different to a conventional "Rocky".

The adaptors to use octal sockets in a septar size hole have been made. I used 6mm high spec dural and machined the top by 2mm so it was flush with the chassis and the back was machined so the octal base was flush with the top.

Image
The only thing necessary for the triumph of evil is for good men to do nothing.

Edmund Burke

G-Popz THE easy listening connoisseur. (Philip)
chris661
Shed dweller
Posts: 2556
Joined: Mon Feb 22, 2010 7:29 am
Location: Sheffield

#2

Post by chris661 »

Beautiful, that.
User avatar
pre65
Amstrad Tower of Power
Posts: 21373
Joined: Wed Aug 22, 2007 11:13 pm
Location: North Essex/Suffolk border.

#3

Post by pre65 »

chris661 wrote:Beautiful, that.
Not bad !

I could have made some thin sheet alloy ones in half the time, but time is something I have and I enjoy turning things on the lathe.
The only thing necessary for the triumph of evil is for good men to do nothing.

Edmund Burke

G-Popz THE easy listening connoisseur. (Philip)
Neal
Shed dweller
Posts: 2299
Joined: Fri Aug 03, 2007 10:57 am
Location: From the land of the Bodgers

#4

Post by Neal »

Are you feelin alright Phil, that looks almost professional :)
User avatar
Mike H
Amstrad Tower of Power
Posts: 20157
Joined: Sat Oct 04, 2008 5:38 pm
Location: The Fens
Contact:

#5

Post by Mike H »

Have lathe, will turn things! :shock:

 
 
"No matter how fast light travels it finds that the darkness has always got there first, and is waiting for it."
User avatar
pre65
Amstrad Tower of Power
Posts: 21373
Joined: Wed Aug 22, 2007 11:13 pm
Location: North Essex/Suffolk border.

#6

Post by pre65 »

Neal wrote:Are you feelin alright Phil, that looks almost professional :)
I have my moments !

Ask Andrew L or Colin Topps about the tweeter rings !

It does not hurt to blow ones own trumpet now and then. :wink:
The only thing necessary for the triumph of evil is for good men to do nothing.

Edmund Burke

G-Popz THE easy listening connoisseur. (Philip)
User avatar
Dave the bass
Amstrad Tower of Power
Posts: 12273
Joined: Tue May 22, 2007 4:36 pm
Location: NW Kent, Darn Sarf innit.

#7

Post by Dave the bass »

pre65 wrote:
It does not hurt to blow ones own trumpet now and then. :wink:
Image

Nice work there Grandad.

DTB
"The fat bourgeois and his doppelganger"
User avatar
Nick
Site Admin
Posts: 15711
Joined: Sun May 06, 2007 10:20 am
Location: West Yorkshire

#8

Post by Nick »

Nice screw head alignment there :-)
Whenever an honest man discovers that he's mistaken, he will either cease to be mistaken or he will cease to be honest.
User avatar
ed
retired
Posts: 5384
Joined: Thu Jun 21, 2007 4:01 pm
Location: yorkshire
Contact:

#9

Post by ed »

spot the train spotter
There's nowhere you can be that isn't where you're meant to be
User avatar
pre65
Amstrad Tower of Power
Posts: 21373
Joined: Wed Aug 22, 2007 11:13 pm
Location: North Essex/Suffolk border.

#10

Post by pre65 »

Nick wrote:Nice screw head alignment there :-)
Well I do try to align screw heads in some sort of order.

Anal or what ? :wink:
The only thing necessary for the triumph of evil is for good men to do nothing.

Edmund Burke

G-Popz THE easy listening connoisseur. (Philip)
User avatar
Nick
Site Admin
Posts: 15711
Joined: Sun May 06, 2007 10:20 am
Location: West Yorkshire

#11

Post by Nick »

Old story, but when I used to work in industrial process control I learned from the old wiremen to leave all the fixing screws in line. That way you could always tell (when it mysteriously went wrong) if someone had removed something.
Whenever an honest man discovers that he's mistaken, he will either cease to be mistaken or he will cease to be honest.
Andrew
Eternally single
Posts: 4206
Joined: Thu May 24, 2007 2:18 pm

#12

Post by Andrew »

pre65 wrote:
Neal wrote:Are you feelin alright Phil, that looks almost professional :)
I have my moments !

Ask Andrew L or Colin Topps about the tweeter rings !

It does not hurt to blow ones own trumpet now and then. :wink:
There's a DTB moment in here, but yes they were very very well done, he's quite a dab hand is our Philip at turning things...ooooerrr
User avatar
pre65
Amstrad Tower of Power
Posts: 21373
Joined: Wed Aug 22, 2007 11:13 pm
Location: North Essex/Suffolk border.

#13

Post by pre65 »

This morning I have stripped out all the unnecessary wiring from the 826 set up and reinstated a 6.3V AC heater supply to the new octal base.

The first cap in the chassis is 1uf motor run, which may not be big enough to get the target HT voltage, but I will leave it for the time being and measure the HT when the amp is completed. Easy enough to sub in a 2uf or 10uf if necessary.

Not much more can be done for the time being, so I better get into "garden mode" while the sun is (sort of) shining.
The only thing necessary for the triumph of evil is for good men to do nothing.

Edmund Burke

G-Popz THE easy listening connoisseur. (Philip)
User avatar
Mike H
Amstrad Tower of Power
Posts: 20157
Joined: Sat Oct 04, 2008 5:38 pm
Location: The Fens
Contact:

#14

Post by Mike H »

Nick wrote:Old story, but when I used to work in industrial process control I learned from the old wiremen to leave all the fixing screws in line. That way you could always tell (when it mysteriously went wrong) if someone had removed something.
Ee tha's clever.


Or, torx screws.

Try and get them off yer little perishers......

 
 
"No matter how fast light travels it finds that the darkness has always got there first, and is waiting for it."
User avatar
Mike H
Amstrad Tower of Power
Posts: 20157
Joined: Sat Oct 04, 2008 5:38 pm
Location: The Fens
Contact:

#15

Post by Mike H »

Say Phil looks like we could get DC coupling throughout with this ....


 
 
"No matter how fast light travels it finds that the darkness has always got there first, and is waiting for it."
Post Reply