"Dave Plowman (News)" wrote in message
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In article ,
williamwright wrote:
On 04/05/2020 13:21, Dave Plowman (News) wrote:

Not the other way round, Charles? Most pulleys I've seen are steel
pressings rather than castings.

Exactly as I said. Ford competition grade was a casting.

Seems odd. A casting is rarely as strong as a pressing, like for like.

Probably the casting was much thicker metal.

I suppose an early car only had the one pulley so how much space it took
up not a problem.

But I really can't remember seeing a cast pulley on any car - even more so
if a performance part where weight is important.

To the untrained eye, this looks like a casting and weighs 0.2kg
or 7.oz

Whether that weight is impressive or not, I dunno

https://105eoc.com/product/dynamo-pu...v=79cba1185463


From memory (very long term) and a quick look at Google images
pressed steel pulley wheels came in two or more parts - two dished
circular blanks which were riveted or welded together. The above
wheel looks to be one piece, to me at least with no obvious joins
and no rivets or similar holding the two halves together.


michael adams

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