CT90 rectifier upgrade (1 Viewer)

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Joined
Mar 23, 2003
Threads
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549
Location
Emmett, ID
I had a good wrenching weekend on the 90.

Started with the rectifier.

Took the old vintage 70's one out, took it apart and replaced it with the Radio Shack 25A, 50V Full-Wave Bridge Rectifier

I bent the spade tabs so it would fit on the original mount. I wanted it solid. At first I used two of the original heat sinks. The original "bumper" fit over the whole unit like it did when it was stock. I liked it the way it was, but with some peer pressure from some "friends" :flipoff2: I decided to do a little improving.

These are pics of version 1

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I don't know how hot these things get, it might not even get hot at all. I figured since the original had the heat sink, I wanted to have something to dissipate any heat.

When I was at Radio Shack looking at electrical connectors for another project, I happened to see one of these. Heat sink

For $2.00 how can I go wrong? Even if I destroy it by trying to make it work I wouldn't be out much.

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I went at it with a drill, then finished up with a dremel and ended up with something I could live with.

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I'm extremely happy with how it turned out. I kept the original mounting bracket, which was important to me. I gained a bit of room by using the radio shack heat sink over using the original heat sink. It's solid and out of the way.
 
I looked back and saw I left one bit of info out. When I took apart the old rectifier, there were "spacers" between the heat sink/wires. I had to use one spacer to get the clearance between the terminals and the bracket.

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Nice work there, Val. Your small sparkplug writeups are becoming legend.
 

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