Hoping for some advice.
I have aged (70) and moved to a hillier area.
currently riding a Gunnar roadie setup with chorus 10 53/39 crank and 13/26 cassette on a chorus bottom bracket 68/102mm English.
I’m looking to improve lower ratios by going to a 50/34 crank and 13/29 cassette.
Front and rear derailleurs are chorus 10 with chorus 10 brake/shifters.
Can’t seem to find a Chorus 10 compact crank.
Can I swap out the crank and bottom bracket with a chorus 12 compact crank 50/34 and record ultra torque bottom bracket 68mm using the existing derailleurs and shifters?
current ratios
expected new ratios
would this work well? Would there be much difference?
Are there other crank options like maybe an FSA on the original bottom bracket?
tia