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Analog Squared Paper Discussion and Appreciation Thread. - Page 33

post #481 of 3498
Fellow pin cleaners,

I have found that using a fibreglass pen brush is ideal for cleaning valve pins and is manoeuvrable enough to access 360 degrees of the pins. This is the brush - http://www.amazon.co.uk/Scratch-Brush-Pen-Fibre-Glass/dp/B00AQFBOOK/ref=sr_1_3?s=diy&ie=UTF8&qid=1371845600&sr=1-3&keywords=glass+fibre+brush - I assume that it's a generic item and easily available worldwide.

Do remember that tiny glass particles are shed using the brush, so I always clean on a damp sheet of newspaper and wear gloves to avoid skin irritation.

Apart from the above caveats, using the brush is easy and the pins are pristine after a few strokes.

Cheers,
Andy.
Quote:
Originally Posted by ianmedium View Post

Wow, you have to show us a picture of your cleaning set up. One word of caution though, be careful with the drilling machine. I would worry about excessive vibrations going through the pins to the delicate hair sized metal threads inside the tube.
post #482 of 3498
Andy, thats fantastic, I know where I can get one locally, off to the store tomorrow to get one, thanks so much for this. I would add that finishing off with alcohol would also take any shards away on the pins or tube.

But be careful with the alcohol as you don't want to get it on the printing on the glass as it removes it!
post #483 of 3498

so if my tool is not working, there's a good alternative. but while believing in my idea, i have decided NOT to use a lorenz tube for my first test :-)

post #484 of 3498
Phew, what a relief!

Have you got the lorenz yet, would love to see some pictures to compare with my pair
post #485 of 3498

no, i got a message from mr. künzig that he is totally busy working from 6am to 11pm all days and i responded that i can wait until first week of july no need to hurry!

 

edit:

taking part in this thread constantly improves my english vocabulary!

 

(had to look for the translation of phew and relief)

 

if translation was correct:

 

yes, everybody can relax now, not damaging my lorenz tubes, would never do this, don't want that in the same moment your lorenz tubes jump out of their sockets instinctively feeling the pain of their brothers.


Edited by GermanGuy - 6/21/13 at 1:56pm
post #486 of 3498
Okedoke!
Oh yes, forgot to say this but I talked with a friend about the LED's and RF interference as I know one chap took the LED's out of circuit to cut out interference. Turns out that because the amp is DC battery powered this will not be an issue, apparently LED noise is only an issue with AC powered devices. I know nothing about this but I do trust the source.
post #487 of 3498

led's are semiconductors so i can think of two effects:

 

noice naturally produced by any semiconductor results in a (very) little change and modulation of  power consumption so modulating the power lines and in the case of ac voltage power supply possibly interfering the power regulating circuit

 

led's are also working as light sensor so could be a source of noise because of the ac driven lights or with high frequency driven neon tubes or energy saving lights.

 

just two speculations?!


Edited by GermanGuy - 6/21/13 at 2:25pm
post #488 of 3498
You did something remarkable, you explained a technical thing and I actually understood it! All of that makes complete sense, thank you!
post #489 of 3498

forgot to mention that semiconductors are also working as (nuclear) radiation detector but if you notice noise due to that reason there may be a more urgent problem around :-)

post #490 of 3498
Quote:
Originally Posted by GermanGuy View Post

forgot to mention that semiconductors are also working as (nuclear) radiation detector but if you notice noise due to that reason there may be a more urgent problem around :-)

Cool, I have tubes that were made in a factory that made parts for radar and top secret devices (sylvania and Ken Rad) and now I have nuclear detectors in my amp.. I think we should call this James Bonds amp! cool.gifbiggrin.gif
post #491 of 3498

maybe you have seen the first videos that were recorded in and around the tschernobyl nuclear reactor after it had exploded. the videos looked like playing a damaged  old vcr tape but in fact this was all the radiation and the particles going through the sensors, electronic components, after 5 minutes the camcorders were damaged and stopped working. when i saw that videos, i was very happy not to be there!


Edited by GermanGuy - 6/21/13 at 3:30pm
post #492 of 3498

I learn a lot here. Thanks guys.

 

GG, I'm with Ian. You explanation is plain clear and well understood.

 

Btw, regarding the LED, I for once has asked Shikada san whether there's an option to switch it ON and OFF.

And following was the answer:

Quote

hmm, It can not.

Illumination brightness can be change by Internal switches. 
(If you want change this, you have to open the panel.)

Unquote

 

I asked, because this beauty is a portable/transportable device and sometimes we might use it in a dimmed or low light places where the LED light could be too distracting.

Well, I came to that with the assumption that the LED's brightness is more intensive compared to the tubes glows. I could be just wrong.

 

 

Quote:
Originally Posted by ianmedium View Post

I forgot to ask, what colour choice did you go for?

I hope your all remembering to clean your pins biggrin.gif

 

Ian, just wondering why the question? biggrin.gif

Actually I was in a dilemma in choosing the color, I prefer black but then I go for silver.

My concern that black might easily get scratches and prone to dust/micro-particles.

Please correct me if I'm wrong here, since I would like to change it to black... biggrin.gif

 

And thanks for the reminder... beerchug.gif

 

Quote:
Originally Posted by smial1966 View Post

I have found that using a fibreglass pen brush is ideal for cleaning valve pins and is manoeuvrable enough to access 360 degrees of the pins. This is the brush - http://www.amazon.co.uk/Scratch-Brush-Pen-Fibre-Glass/dp/B00AQFBOOK/ref=sr_1_3?s=diy&ie=UTF8&qid=1371845600&sr=1-3&keywords=glass+fibre+brush - I assume that it's a generic item and easily available worldwide.

Thanks Andy. This one might suite me well.


Edited by Boringer - 6/21/13 at 5:29pm
post #493 of 3498

got an email that my amp now is in production!

post #494 of 3498

spent some minutes to think about what to do with the tube pins after cleaning them.

 

there is a nice tool:

 

http://www.conrad.de/ce/de/product/530506/Handgalvanisier-Set/?ref=detview1&rt=detview1&rb=1

 

you can use it to apply a layer of 24 karat gold on the pins. it uses a liquid and two batteries, it's an electrochemical (galvanic) process identical to an industrial process, the result would be a gold pin tube!

 

due to my limited english language skills i was only able to post a german source (sorry for that) but should be no problem to find something similar after knowing the idea.

 

p.s.

 

a short calculation: :-)

 

pin cleaning - 5 minutes

visual check and additional cleaning - 1 minute

apply gold layer - 3 minutes

quality control - 1 minute

 

10 minutes x 7 pins - 70 minutes

 

complete set 4 tubes plus functional check - listening -  295 minutes

 

reduced time (learning process, optimization, loss of quality, tired, what a boring job, don't want to spend that much time, it's ok as it is ...) - 4 hours

 

(for me) - approx. 8 complete sets -  32 hours i.e. 4 working days

 

need a holiday for that or we convert our tu-05 listening and tube rolling party into a tube pin cleaning party, if we form a manufactoring line and provide enough tools this could dramatically decrease time and increase fun :-)


Edited by GermanGuy - 6/22/13 at 12:44am
post #495 of 3498
Woo Hoo! GG's amp is being made as we type! Not long now, not long!

I like that tool as well for plating the pins. The gold is an even better conducter, I wonder what that would do for sound?
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