Thread: Trouble shifting down while going uphill

Thanks anyway, though!

A bit far from me to offer to have a look at it for you!

Portland has so many good bike shops and bike mechanics that you shouldn't have any trouble finding someone that could help you. Not that you really need it, all you need to know is on the Park Tool web site _________________ --- more... ---

I'm not that familiar with deraileurs, but a google search for "shimano acera manual" turned up this page which has then got links to an exploded diagram and the fitting and adjustment instructions . If it's only the lowest gear/largest sprocket that wont engage properly, I would suspect it's the travel adjustment, #3 under "Cable securing and stroke adjustment". If it doesn't change down...

I think it is worth learning how to adjust it yourself, its usually not too tricky. And derailleurs are fairly standard, so most are adjusted in the same sort of way. There's some good guides on the Park Tool website, specifically this one: http://www.parktool.com/repair/readhowto.asp?id=64 Basically you have to adjust the H and L screws until it runs nicely on both the biggest and smallest sprockets. Plus oiling or replacing the cable if...