On Thursday, March 18, 2021 at 2:58:16 PM UTC-7, Joerg wrote:
My chain rings are through again but replacements have become expensive.
It's now much cheaper to buy a simple crank set of another brand.
Preferably steel because aluminum wears so fast. What I have is:

Shimano 600EX, 52/42T, bottom bracket is 116mm JIS taper.

What I'd like to replace it with is this Vuelta Corsa set:

https://smile.amazon.com/Vuelta-8150...dp/B0081UV2NU/

Only 50T which is kind of ok but the 32T lower will move me up hills
much better. Getting old, and all that sort of thing. However, says it's
for 110mm BB and I wonder if my chain line would go out of whack. I'll
ask on Amazon as well but usually there aren't good answers that way.

My shifters are simple friction levers and the front DR cage looks tall
enough to handle the 50/32 step.

Do you guys think this would work?

--
Regards, Joerg

http://www.analogconsultants.com/
I think that you would like the compact chainrings but you must also get a compact front derailleur or you will be throwing the chain every other day. As for the larger chainrings, why? I find it difficult to believe that you are busy spinning down hills or making more than perhaps 300 watts to exceed the speed capability of a 50 ring. Be careful, though a compact and triple derailleur look pretty much alike they have different lift ratios.