yeah, you need to track down the right tool to remove the gears. i've got the suntour 4 prong one, but i think you'll need a different one.
then you're gonna need to buy a bmx freewheel (i've got a pretty much unused 16t one you can buy).
you might need a tensioner on there cos those dropouts don't look they've got much room to get the tension right.
you'll also probably need to re-dish the wheel.
and as hippy says, mess around with the chainline. all you need to know is on sheldon brown's site.
if it all seems like too much work (don't be put off though cos it's not that hard), then you can always buy a new rear wheel.
yeah, you need to track down the right tool to remove the gears. i've got the suntour 4 prong one, but i think you'll need a different one.
then you're gonna need to buy a bmx freewheel (i've got a pretty much unused 16t one you can buy).
you might need a tensioner on there cos those dropouts don't look they've got much room to get the tension right.
you'll also probably need to re-dish the wheel.
and as hippy says, mess around with the chainline. all you need to know is on sheldon brown's site.
if it all seems like too much work (don't be put off though cos it's not that hard), then you can always buy a new rear wheel.