Chassis Discussion - Page 87

Gianluca · 25th November 2020, 01:52 PM

Yes, the slots are used by our supplier to put them in their anodizing tanks

ukhopeful · 1st December 2020, 10:43 AM

Bravo Gianluca! Steel brackets on Dissipante now has M3 captive nuts instead of using self-tapping screws

wtnh · 21st January 2021, 07:57 PM

I had a DUH! moment recently when I noticed that my digitally controlled preamp which I had built in a 2U Pesante was getting glitched by static; that is the Arduino microprocessor inside would sometimes go haywire when I touched the front panel (it is winter here and static is very present).

I have always bonded the baseplates and back panels of the chassis I use to AC ground for safety. However, I neglected to bother with the front aluminum panels, since I assumed - incorrectly - that the mounting screws would take care of it.

WRONG! The paint on the side panels is so good, that the screws are completely insulated and the front panel "floats".

Scraping the paint off of the back of one of the side flange holes and adding a star washer solves this, but you also need to do this at the rear of the enclosure as well. In fact, all painted (and anodized) metal parts need to be bonded to ground.

FWIW - hope this is helpful info.

RussellKinder · 21st January 2021, 08:15 PM

Very true. An anodized surface is aluminum oxide, which is definitely not conductive.
--Russell

yaduck9 · 27th January 2021, 06:48 PM

I am changing out my F5 boards for an F6 and I find that the transformers on the F6 boards are a bit too close to the inputs and outputs mounted on the rear panel of the case.

Is it possible to order a new rear panel for a Deluxe 4U case?

Thanks for your time.

Bob D.

astromo · 27th January 2021, 07:27 PM

yaduck9, check the store under chassis accessories. You should be able to find what you're after.

yaduck9 · 28th January 2021, 01:53 AM

Thanks

The store didn't have what I needed, but I was able to source it through another vendor.

But, thanks for the quick answer.

Joel Wesseling · 02:10 AM

Thermal Resistance rating of the extrusions, slimline 2U, for example - Are they available?

brian92fs · 28th January 2021, 02:51 AM

The heatsinks entry has the ratings. You can also visit Modushop site. They have the ratings listing in their descriptions.

astromo · 28th January 2021, 11:03 AM

Beat me Brian. Nice work.

21st January 2021, 07:57 PM	#863
wtnh diyAudio Member Join Date: May 2015	Front panel grounding I had a DUH! moment recently when I noticed that my digitally controlled preamp which I had built in a 2U Pesante was getting glitched by static; that is the Arduino microprocessor inside would sometimes go haywire when I touched the front panel (it is winter here and static is very present). I have always bonded the baseplates and back panels of the chassis I use to AC ground for safety. However, I neglected to bother with the front aluminum panels, since I assumed - incorrectly - that the mounting screws would take care of it. WRONG! The paint on the side panels is so good, that the screws are completely insulated and the front panel "floats". Scraping the paint off of the back of one of the side flange holes and adding a star washer solves this, but you also need to do this at the rear of the enclosure as well. In fact, all painted (and anodized) metal parts need to be bonded to ground. FWIW - hope this is helpful info.

21st January 2021, 08:15 PM	#864
RussellKinder diyAudio Member Join Date: Mar 2015 Location: Austin, TX	Anodized aluminum Very true. An anodized surface is aluminum oxide, which is definitely not conductive. --Russell __________________ Best Regards, Russell Wherever you go, there you are. --Buckaroo Banzai

28th January 2021, 02:07 AM	#868
Joel Wesseling diyAudio Member Join Date: Jan 2003 Location: Trent Lakes	Thermal Resistance rating of the extrusions, slimline 2U, for example - Are they available? Last edited by Joel Wesseling; 28th January 2021 at 02:10 AM.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Photo Discussion	cadman	Tubes / Valves	69	20th February 2013 12:10 AM
What d'you put in the PSU chassis, and what in the circuit chassis?	andyjevans	Tubes / Valves	5	15th December 2007 12:41 AM
SMPS for B+ discussion	ackcheng	Tubes / Valves	36	14th November 2006 01:36 PM
How to star ground to Chassis without a Chassis??	Minion	Chip Amps	10	5th November 2006 05:28 PM
Where to get chassis or chassis parts in Vancouver?	Prune	Parts	1	7th July 2004 06:37 PM

New To Site?	Need Help?
Register to Participate Privacy Statement Contact Us	Frequently Asked Questions Did you forget your password? Mark Forums Read


	Please consider donating to help us continue to serve you. Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving

25th November 2020, 01:52 PM	#861
Gianluca diyAudio Member Join Date: Mar 2012 Location: Bologna, Italia	Yes, the slots are used by our supplier to put them in their anodizing tanks

1st December 2020, 10:43 AM	#862
ukhopeful diyAudio Member Join Date: Jul 2014	Bravo Gianluca! Steel brackets on Dissipante now has M3 captive nuts instead of using self-tapping screws

27th January 2021, 06:48 PM	#865
yaduck9 diyAudio Member Join Date: Mar 2016 Location: way out there	I am changing out my F5 boards for an F6 and I find that the transformers on the F6 boards are a bit too close to the inputs and outputs mounted on the rear panel of the case. Is it possible to order a new rear panel for a Deluxe 4U case? Thanks for your time. Bob D.

27th January 2021, 07:27 PM	#866
astromo diyAudio Member Join Date: Nov 2017 Location: BFN	yaduck9, check the store under chassis accessories. You should be able to find what you're after.

28th January 2021, 01:53 AM	#867
yaduck9 diyAudio Member Join Date: Mar 2016 Location: way out there	Thanks The store didn't have what I needed, but I was able to source it through another vendor. But, thanks for the quick answer.

28th January 2021, 02:51 AM	#869
brian92fs diyAudio Member Join Date: Jan 2017 Location: Northern California	The heatsinks entry has the ratings. You can also visit Modushop site. They have the ratings listing in their descriptions.

28th January 2021, 11:03 AM	#870
astromo diyAudio Member Join Date: Nov 2017 Location: BFN	Beat me Brian. Nice work.