Originally posted by bikerider
Were you shifting at the time? No

Were you pedalling hard? Yes

What gear were you in on the cassette? Can't remember, but probably one of the larger rings on the cassette. I've got little (newbie) legs and have trouble turning the harder (smaller) gears on the hills.

How many miles on the bike? Less than 300

I assume it was stuck between the smallest chainring and the chain stay (not really the BB). No, it was stuck between the smallest chain ring and the BB. I removed the rear wheel to finally get it free.

This is obviously bad for the frame. It may be a mechanical problem or a shifting technique problem or a combination of both.

Some possible causes for 'chainsuck':

1)Worn chain/chainrings.
2) Poor chainline. In addition to increasing the speed of
wear of the drivetrain, poor chainline will contribute to
chainsuck.
3) Mud and/or grit.
4) Bent teeth or 'burrs' on the chainring.

Since you bike is relatively new I would focus on #2 and #3. Since (I asssume) the bike is new, I would take it back to the shop and request that they check and/or re-adjust the drivetrain.