Originally Posted by
RChung
As in all things, it depends on what you mean by "significantly."
I just looked it up, I gave some data and analysis in
this thread several years ago. You may have to scroll down a bit. In that thread there are also links to some articles on drive train efficiency that appeared in the IHPVA journal.
I had a look at your link, but I can't see any data. It looks like you compared 54/15 vs 42/12 on the same chain line, but I can't see the actual results.
My idea of "significant" would be around 2.5% i.e 5W difference at 200W output - but that's obviously completely arbitrary. I expect the OP would not be looking for the odd Watt here or there in this analysis.