Joined: Jan 2008
Posts: 23,639
Likes: 1,106
From: Mans of NC & SW UT Desert
Bikes: 86 Katakura Silk, 87 Prologue X2, 88 Cimarron LE, 1975 Sekai 4000 Professional, 73 Paramount, plus more
Raising or lowering seat post does nothing for top tube length. At 5-1, I would look for either a Terry styled bike, or a rigid frame MTB. Some of the brands made very small adult MTBs. My wife has 2, a 14 1/2 inch and a 15 inch frame.