I've got a bike with 700 (28") wheels. It is used for commuting (main/only transport actually), but I occasionally take it into mountains on dirt walking paths. The problem is climbing really steep hills - it forces me to walk sometimes. I'd like to put some lower gears (since I practically never use the highest two gears).
The bike has Shimano Acera shifters, derailleurs etc.
Gears are front: 48 - 38 - 28, and 11-13-15-18-21-24-28-32 (8 sprockets) rear.
It would be nice is if there was a 24 front, or a 38 or something like that rear sprocket. Or both. Everything is fine, I just lack that ultra-slow gear for really steep climbs. Perfect would be to switch the rear 11 with a bigger than 32 (like 38) sprocket.
Are there compatible front or/and rear sprocket sets to change this?
What do you suggest?