Hi,

50 to 53 is 6% and 34 to 39 is 15%. So you'll lose probably
a full gear at the bottom and gain half a gear at the top,
and just have 9% more overlap of ratios inbetween.

Can't see the point in these days of compact front chainrings,
one would think the best approach is changing the rear cassette.

Anyway check out how much rear derailleur movement is
left on big/big, if its 1" you'll be fine, 0.5" you won't be.

If you never crosschain to big/big you'd probably also be OK.

rgds, sreten.

Old school 52/42 with 14,16,18,20,22,24,28. 40 to 100 gear inches.