This month’s Traction Bike Build is all about the seating arrangements with a seat and post combo. With a mixture of comfort, light weight, and most importantly – strength, I have decided the best option for this bike is to use the more commonly found on BMX bikes, pivotal technology.
Pivotal seats and seat posts were invented by Darcy Saccucci and ex-pro BMXer Jay Miron under the MacNeil Bike banner in the late 90′s early 2000′s as an alternative to the heavy, much more complicated rail system used on most bikes. The Pivotal system uses a plastic mount on the bottom of the seat that mounts directly onto the seatpost, all held together with a single bolt that is accessed through a hole in the top of the seat. This mount allows for easy adjustment of seat angle, and due to the design there are no rails to bend or break – creating a much stronger, simpler seat setup for those of us who are usually pretty hard on their seats!
I went with a Deity ‘Syringe’ Pivotal Seatpost for this build, in 135mm length/27.2 diameter to fit my Identiti AKA frame. I wasn’t worried about the length of the seatpost so much as I’m not planning to use this bike for long extended sit-down pedalling sessions so didn’t need it to be extended very high. To further drop the weight of this setup the Deity Syringe is made out of Injection Molded Nylon with a Glass Fiber Composite, with an internal aluminium sleeve that secures the bolt as well as adds strength to the post. This seat post weighs in at only 99 grams.
To complete this seating set up, I went with the Subrosa ‘Zombieland’ Mid Pivotal seat. Admittedly, one of the first things I looked for in the seat for this bike build (after it being a pivotal seat of course) is how it looks, and as I’m a bit of a Zombie movie fan, I couldn’t go past this ‘Zombieland’ seat! Featuring an all-over print on a 1 piece vinyl cover there is no stitching to come undone over time (hopefully) ensuring a very long life for this seat. Weighing in at 265 grams, this seat is also very light – helped by the use of a hollow bolt to attach it to the Deity seatpost.
Stay tuned next month for the next part of this exciting build. You can also follow the build on our “Monthly Bike Build” board on Pinterest, located here.