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RCA R-8 Chassis Rebuild
#8

(07-16-2016, 03:28 AM)palegreenthumb Wrote:  Wow Russ, hard to believe that's the same radio!

What's your take on casting 2W resistors into dogbone molds? Are they still able to dissipate 2W, or are they derated a bit?

I have been doing this for years now. I have only had one get hot enough to damage the molded material and it was the result of another failure. The idea is that you replace a 1/2w with a 2W or larger to better dissipate any heating, most of which leaves by way of the leads anyway.

But, yes. I would not run them at 2w. I have used 3.8w wire-wound when I thought heat would be a problem. This increases the cost by about 10X. These resistors (the ww) are the same size as a 2w metal (blue) so are sized to cast into a 1/2w dogbone or larger.

"I just might turn into smoke, but I feel fine"
http://www.russoldradios.com/


Messages In This Thread
RCA R-8 Chassis Rebuild - by Phlogiston - 07-15-2016, 09:48 AM
RE: RCA R-8 Chassis Rebuild - by KCMike - 07-15-2016, 11:16 AM
RE: RCA R-8 Chassis Rebuild - by Eliot Ness - 07-15-2016, 02:17 PM
RE: RCA R-8 Chassis Rebuild - by klondike98 - 07-15-2016, 06:05 PM
RE: RCA R-8 Chassis Rebuild - by Paul Philco322 - 07-15-2016, 08:27 PM
RE: RCA R-8 Chassis Rebuild - by Arran - 07-16-2016, 03:22 AM
RE: RCA R-8 Chassis Rebuild - by Phlogiston - 07-16-2016, 10:03 AM
RE: RCA R-8 Chassis Rebuild - by palegreenthumb - 07-16-2016, 03:28 AM
RE: RCA R-8 Chassis Rebuild - by Phlogiston - 07-16-2016, 09:57 AM
RE: RCA R-8 Chassis Rebuild - by Arran - 07-18-2016, 02:13 AM
RE: RCA R-8 Chassis Rebuild - by Phlogiston - 07-18-2016, 10:01 AM



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