Joined: Nov 2006
Posts: 3,391
Likes: 1
From: duluth
Bikes: '07 Pista, '09 Fantom Cross Uno, '8? Miyata, '67 Stingray, '0? Zoo mod trials, Tallbike, Chopper, '73 Schwinn Collegiate, '67 Triumph Chopper, '69 CB350, '58 BSA Spitfire, '73 CB450
Ok. Now for the real answer.
1.) Bring your sis's bike to the top of the biggest hill around, make sure it has lots of traffic and it is snowing or raining, hard.
2.) Disconnect her front brake while she isn't looking.
3.) Have her hop on the bike and give her a good push down the hill.
4.) If she stops in a reasonable fashion, under control, then she doesn't need a rear brake.
5.) If she careens down the hill in a panic and crashes, she needs a rear brake.
END OF THREAD.