Reviewed by Brian Mullin http://www.gramslightbikes.com/
I am really liking the Specialized Command Post adjustable seatpost, which uses a mechanical system with an adjustable air spring, and has three locking positions, and a simple one bolt saddle clamp that is easily to install and tune the saddle’s position.
Specialized Command Post
The Command Post (CP) is a mechanical 3-position locking height adjustable seatpost, with a 100mm range, a handlebar mounted remote, a single bolt keyed saddle clamp system, and is available in 31.6mm x 400mm and 30.9mm x 400mm size options. The three height settings are the Power position or full extension, Cruiser, which is 35mm below Power, and the Descender, which is 100mm below Power. The remote lever comes as a left handed version by default, but a right one can be ordered. The CP weighed in at 525 grams, not including the remote.
Command Post weight – 525.2 grams
Remote w/cable/housing weight – 62.3 grams
Insertion length – 206mm (8 1/8″)
Stanchion length – 102mm (4″)
I first checked the pressure via its Schrader valve, which is located on the bottom of the post. The pressure range is 25-35 psi, with higher psi causing a faster rebound. Mine was at the minimum of 25 psi (factory default), so I left it that way. The insertion area of the post has a rough finish, which functions as anti-slippage zone, and helps prevent any creeping. I placed the remote snug up against my left Magura Louise brake, and eyeballed the required cable housing length, and cut the excess off. I inserted the proprietary cable through the remote, the right angle pipe and into the housing. The messy portion started next. I ran the cable up through the post’s barrel adjuster, and meshed in the cable’s housing. The cable is tweaked up over a sharp bend on top of the activation lever, and is clamped down with a pinch bolt and washer using a 3mm hex. The lever doesn’t have a groove for the cable, so it’s difficult to clamp things down properly. With the sharp bend and the lack of a grooved slot, I had issues getting it snugged down, and proceeded to crush and damage the cable. Once everything was installed, I needed to tune the cable’s tension, which required re-clamping the cable, exasperating the already crushed cable. Since the cable is proprietary (it has a barrel end piece), you need to get another one from your LBS or Specialized, though for 2011, they have updated the remote, and it will accept a standard shifter cable.
Installing the saddle is an easy task due to the one bolt and keyed nut clamp, which use a wedge and rail clamp that each has a groove that holds the saddle’s rails. Just loosen the bolt wide enough (make sure the bolt is well greased), so that the wedge and clamp will allow the rails to pop into the slot, and position the saddle fore and aft, and its horizontal pitch, and then clamp the bolt down tight using a 5mm hex.
To perform the final tuning, actuate the remote, and press down on the saddle to the middle position, and let go. If the seat pops up loosen the cable with the barrel adjuster, and if the seat won’t go down, tighten the cable. The sweet spot where the cable’s tension works properly is small, and micro turns of the barrel adjuster is all it takes, but once it’s located the system works like a charm.