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Heatsink collection for sale...

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Need a heatsink for that 300W/ch class A amp? Something smaller, perhaps? I think I can accomodate you...

I have decided to disperse my collection of heatsinks to those who will put them to use sooner than I ever will. The following messages will feature one heatsink's photo, description, and price. There will be at least six heatsinks listed, maybe more, depending on my mood, and what else I manage to dig out of storage...

I will accept postal money orders or paypal. Shipment will occur within
2 business days of receipt of payment. Shipment will be by UPS ground only.

email with questions.... rehorstmarkatnetscapedotnet (you know how to fix the address...).

Thank you.

I_F
 
Heatsink no. 1

We'll start small...

Overall dimensions 10 1/8" x 9 7/8" x 1 5/16"
Plate thickness is 5/16" (reduced to 3/16" where transistors mount).
Predrilled for 6 TO-3 transistors
25 fins are approx. 10" long x 1" high x 1/16" thick

Finish: mostly gray paint with some areas unpainted. Some blemishes
in the paint.

Weight: 4 lbs 12 oz.

$10 plus shipping...
 

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Heatsink no. 2

Let's get a little bigger...

Identical pair (yes, two of these, to be sold together)

Dimensions: 11 13/16" long x 4 5/8" wide x 4 1/2" high.
9 fins are 11 13/16" long x 2 5/8" high x 3/16" tapering to 1/16" wide.
Finish: raw aluminum, unanodized.

The base where the fins originate is approx. 5/8" thick. It is predrilled to accomodate 16 TO-220 transistors. The flat area on the base between the two TO- mounting rails is approx. 3 7/8" wide x 11 13/16" long.

There are two, 1/4" thick rails predrilled to mount a total of 16 TO-3 transistors. The rails stand approx 1 1/4" above the base.

These two are sold as a set with hardware to connect the two as a tunnel and mount a standard fan at one end.

Weight of the pair with included hardware is 15 lbs.

$50 plus shipping...
 

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Heatsink no. 3

A bitt smaller now...

Identical pair (yes, two of these, sold as a pair)

Dimensions: 8 1/4" long x 2 1/8" wide x 4 3/4" high.
16 fins are 4 1/2" long x 1 3/8" high x 1/8" tapering to 1/16" thick.
Finish: raw aluminum, unanodized.

The base where the fins originate is approx. 1/4" thick.
The flat area on the base is approx. 4 1/2" wide x 6 3/4" long.

These two are sold as a set.

Weight of the pair is 3 lbs 9 oz.

$10 plus shipping...
 

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Heatsink no. 4

Water cooling plate!

Dimensions: 12" long x 7 3/4" wide x 15/16" high, excluding copper tubing. Including tubing, length goes to approx. 15 3/4".

Tubing is 1/4" ID copper, with push-on hose fittings.
Finish: raw aluminum, unanodized.

The plate is 1/4" thick.

Weight is 3 lbs 15 oz.

$20 plus shipping
 

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Heatsink no. 5

Here it is, the mother of all heatsinks, to make all your wildest class A amplifier fantasies come true! Now you can build the truly "no-compromise" amplifier you have always dreamed of!

Dimensions: 18 5/8" long x 7 3/8" wide x 4 3/4" high.
Top and bottom plates are approx. 1/2" thick.
Ends are cut to accomodate standard cooling fans.
29 fins are approx. 3 3/4" high x 12 1/2" long x 1/16" thick.
2 outer fins are approx 3 3/4" high x 18 5/8" long by 1/16" thick.

This heatsink is unused. There are several small, tapped holes at
various locations (see photo).

Finish: gold anodized.

Weight is 18 lbs 10 oz.

$85 plus shipping...
 

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Heatsink no. 6

A bit smaller again...

Dimensions: 10 7/8" long x 3 3/4" wide x 4 15/16" high.
11 fins are 4 15/16" long x 3 1/8" high x 5/16" tapering to 1/16" thick.
Predrilled/tapped to mount 16 TO-220 transistors.

Finish: black anodized. Some minor surface dings.

The plate is 5/8" thick.

Weight is 6 lbs 14 oz.

$15 plus shipping...
 

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gengis said:
Heat sink #5:

Extrusion or Welded?

The fins are too tall, thin, and too closely spaced for an extrusion.
It is a "swaged" fin type. The fins are press fit into grooves cut in the top and bottom plates and it all appears to be held together with epoxy.

You can see the grooves in the bottom plate at the end of the heatsink.


I_F
 
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