Heat sinks received
Good News,
The heat sinks arrived today.
A picture is attached, showing the heat sinks(which look really nice), as well as the drilled & tapped holes for mounting. I measure 7.5x5.4x1.25" and the fins are 1" in length.
The more I research heatsinks, I'm thinking the estimate of 0.5deg/W that I was given may be optimistic; apparently it depends upon the ambient temperature. I am pretty confident, however, that two of these used together* will be fine for the 10 devices of an extended Leach amp(which is a class AB amp rated at about 120-150W into 8ohms).
I'll be packing them up and hope to mail them out on Monday.
Any questions or concerns, give me an email.
Thanks and Holiday Greetings to all!
-Chas
* two used together measures 10.75x7.5x1.25"
Good News,
The heat sinks arrived today.
A picture is attached, showing the heat sinks(which look really nice), as well as the drilled & tapped holes for mounting. I measure 7.5x5.4x1.25" and the fins are 1" in length.
The more I research heatsinks, I'm thinking the estimate of 0.5deg/W that I was given may be optimistic; apparently it depends upon the ambient temperature. I am pretty confident, however, that two of these used together* will be fine for the 10 devices of an extended Leach amp(which is a class AB amp rated at about 120-150W into 8ohms).
I'll be packing them up and hope to mail them out on Monday.
Any questions or concerns, give me an email.
Thanks and Holiday Greetings to all!
-Chas
* two used together measures 10.75x7.5x1.25"
Attachments
Hi Chas,
Greeting from out of town (Sacramento), what kind of heat spread plate you are going to use?
Greeting from out of town (Sacramento), what kind of heat spread plate you are going to use?
woodturner-fran said:
Fran
I'm in the UK. Can I ask where you are sourcing your sinks from, I need some for an F5.
Thanks
Ian
Hi Chas,
My heat sinks arrived right when they were promised. I'm particularly impressed with your careful packaging. They arrived without a blemish and in perfect condition.
Thank you,
-David
My heat sinks arrived right when they were promised. I'm particularly impressed with your careful packaging. They arrived without a blemish and in perfect condition.
Thank you,
-David
These were military surplus, purchased online (I found using a Google search); Unfortunately, they're all gone, and the seller does not expect to get any more.
You might check with Apex Jr. - I believe they have some large gold anodized heat sinks at a fair price.
Regards and Happy New Year!
-Chas
You might check with Apex Jr. - I believe they have some large gold anodized heat sinks at a fair price.
Regards and Happy New Year!
-Chas
Barryblue: I ended up getting a big one here and cutting it in half for my F5 - I bought in RS, 490-7040. Weight is the problem when buying them from overseas.
Fran
ps tried emailing you but you have it turned off
Fran
ps tried emailing you but you have it turned off
heatsinks
Chas
My first post(i'm blushing and excited all at once)
Do you have any left? I would be interested in 4 heatsinks sent to the great(wet and white)state of maine. No paypal but lots of good intentions!
tnx
rob
Chas
My first post(i'm blushing and excited all at once)
Do you have any left? I would be interested in 4 heatsinks sent to the great(wet and white)state of maine. No paypal but lots of good intentions!
tnx
rob
Sorry, Rob (see post #30).
Check out eBay-there are some heatsinks being offered there.
Good Luck!
-Chas
Check out eBay-there are some heatsinks being offered there.
Good Luck!
-Chas
Update
Update-
Turns out that one request for these heat sinks was never paid, after waiting several weeks.
If anyone is interested, I have 4 pcs available; unfortunately, I lost $$ on postage(and Paypal) last time.
Plus, the cost of shipping went up 1st of the year, so I'm asking $25 per pair including postage(within the lower 48). Still a good deal on these really nice heatsinks ( I'm using a pair in my Leach amp).
Please E-mail me if you want them, and I'll give you my Paypal addy.
-Chas
Update-
Turns out that one request for these heat sinks was never paid, after waiting several weeks.
If anyone is interested, I have 4 pcs available; unfortunately, I lost $$ on postage(and Paypal) last time.
Plus, the cost of shipping went up 1st of the year, so I'm asking $25 per pair including postage(within the lower 48). Still a good deal on these really nice heatsinks ( I'm using a pair in my Leach amp).
Please E-mail me if you want them, and I'll give you my Paypal addy.
-Chas
Attachments
You still have those four heat sinks? Where are you in norcal, I may be able to pick them up (I'm in Mountain View).
Email me - justin (dot) r (dot) lee (at) gmail (dot) com
Thanks!
Email me - justin (dot) r (dot) lee (at) gmail (dot) com
Thanks!
Update:
Both pairs are sold; however, I still have one single piece I was saving as a spare.
Turns out, after cutting/machining my two other pairs, it looks like I won't be needing it.
If anyone can use a single 7.5x5.4x1.25"heatsink, please let me know. I'm asking $12 including postage within the lower 48.
-Chas
Both pairs are sold; however, I still have one single piece I was saving as a spare.
Turns out, after cutting/machining my two other pairs, it looks like I won't be needing it.
If anyone can use a single 7.5x5.4x1.25"heatsink, please let me know. I'm asking $12 including postage within the lower 48.
-Chas
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