by trailgumby » Mon Jan 12, 2009 8:38 pm
OK, not sure if I'm teaching you to suck eggs (sorry, if I am):
Suspension is supposed to have some sag. Between 25% (XC) to 33%(DH). It allows the wheel to drop into depressions and keep your tyre in contact with the ground. I have mine pumped up to provide about 25% at both ends for trail riding.
Pedal bob is only a problem with my dually when I'm up out of the saddle stomping my way up an uphill pinch - in all, probably only 400m of my 20km commute. The rest of the time I sit and spin up the climbs, and I end up reeling in and passing the out-of-saddle stompers anyway. And that's with a pretty plush 130mm travel bike
But if you're planning on doing any decent commute a hardtail with a lockout is probably the better alternative and is what I use when I'm not riding through the bush for part of my route to work. HT's are probably more versatile if a lot of your riding is on smooth trails or paved roads. Full sussers are less effort to ride for longer once the terrain gets rougher.