Originally Posted by
cyberphat
Thanks for the in-depth response. My old MTB is aluminium and has no shocks. So naturally I am out of the saddle to save my soft tissue area

. I'll have to practice the weigh shift and get light suggestions.
Btw, my crossings are much smoother than
10 Wheels' photos
Some rail tracks photos courtesy Google streetview:
1.
http://maps.google.com/maps?f=q&sour...,75.26,,1,5.66
2.
http://maps.google.com/maps?f=q&sour...,22.07,,0,9.02
3.
http://maps.google.com/maps?f=q&sour...12,197.85,,0,5
Thanks,
I wish the tracks I crossed where like that. I cross 3 sets of tracks on each commute and mine have big chunks of asphalt missing. I'm riding a commuterized road bike with cheap, low-spoke-count wheels and 700x28 tires pumped to 110psi. I weigh in at 220+, ride with loaded panniers and take the tracks at full speed. I do get off the saddle and shift my weight back and, so far, no issues mechanical or otherwise.