Max seat post insertion on a 2020 SJ (M, carbon,) is
11in (280mm)
. Pulled mine out and finally measured for myself. Here’s an added visual. I ride with my seat above the collar approximately 292mm (to center of seat rails).
What size is the seat post on a Cannondale?
Registered. The post size is
31.6
. If the fit is that tight then the seat tube needs to be honed out with a flex hone.
Does the Specialized Stumpjumper have a dropper post?
All bikes have a dropper post
and a wide-range 12-speed drivetrain. So it’s a fully modern bike, ready to hit the trails at any spec level. When it comes to climbing, the new Stumpjumper is just what you’d expect from a snappy 130mm travel 29er.
What is the standard size of a bike seat post?
While there are any number of post diameters out there, most modern road and MTB bike frames accept a seatpost of either
27.2mm
in diameter (‘standard’), 30.9 or 31.6mm (‘oversize’).
Can a 31.6 seatpost fit a 30.9 frame?
You can fit a narrower post into a wider frame using a shim (a thin sleeve of aluminium or plastic), for example a 30.9 mm dropper post into a 31.6 mm frame. However,
there is no way to fit a wider post in a narrower frame
, for example a 31.6 mm post into a 30.9 mm frame.
Can I put a longer seat post on my bike?
You can adjust the seat post by making it higher
(may require a longer seat post than you currently have). Also, some seat posts are straight, whereas others have a setback. The later will move the seat slightly further back on the bicycle.
What size seatpost clamp do I need?
Note:
The seat clamp diameter needs to match the diameter of your seat tube rather than your seatpost
, which is a little smaller. For example, a 27.2mm seatpost (a size commonly found on road bikes) fits inside a 28.6mm diameter seat tube, so it’s a 28.6mm clamp you need.
How do you measure saddle height?
- To start with, raise your saddle roughly to your hip. …
- Sit down on the saddle and touch the pedal with your heel.
How do you measure a seatpost diameter without a caliper?
In the absence of a vernier caliper or a mike an accurate way might be to
measure the circumference with a tape measure and then divide that figure by pi
which will give the diameter.
What does Specialized Stumpjumper weigh?
The full Stumpjumper frame assembly* (barely) tips the scales at an unbelievable
5.3 lbs (2,420g)
, but we didn’t compromise in our quest for light weight. The Stumpy punches above its weight, setting the bar for mid-travel trail bikes in handling characteristics, pedaling efficiency and trail toughness.
Is the Stumpjumper a enduro?
The Specialized Enduro Comp, Stumpjumper Comp, and Stumpjumper EVO Comp are all 29′′ carbon frame full suspension mountain bikes
. The Enduro Comp has better components, a better fork, and more travel.
Is there a 27.5 Stumpjumper?
All of you die-hard alloy fans can rejoice.
Yes, the new Stumpjumper ST comes in an alloy version
, and it may be the most radically designed alloy bike ever made. And with new tube shapes, an asymmetrical design, and the snappy handling that the 27.5 platform is known for, the Stumpjumper ST Alloy 27…
Can a seatpost be too long?
As long as the minumum length is inserted into the frame you will be structurally safe
. You can buy a shorter post of course. However, if you need to drop the saddle all the way to the frame the bike is likely too large for you and possibly dangerous, as you will have no standover clearance.
How long of a seatpost do I need?
The CPSC rule in the US is that the seatpost must be inserted
two diameters of the seatpost into the frame
. If it’s a 27.2 mm seatpost, it must extend 54.4 mm into the frame, which is 2 1/8′′.
Is it OK to cut a bike seatpost?
Condensed answer:
A bicycle seat post can be cut as long as the new size respects the minimum insertion length of the seat post
. Ignoring the minimum insertion length and cutting too much of the seat post will result in extra stress on the frame (seat tube) and may cause a crack.
What size clamp do I need for a 28.6 seatpost?
Size & Use: Two types of bike seat post clamps are available while seatpost clamp
31.8mm
applies for 27.2mm / 28.6mm (outer diameter) bicycle frame seat tube, and 34.9 mm seat clamp suits for 30mm/30.4mm/30.8mm/30.9mm/ 31mm/31.6mm (outer diameter) seat post.
What size seat clamp do I need for a 25.4 seatpost?
25.4 seatpost =
28.6 seatpost clamp
.
What is a seat clamp?
Seat clamp is
used to secure the seatpost when inserted into the bicycle frame
. It comes with different diameter as each bicycle seat tube varies in its diameter. It is important to note that the internal diameter of the seat clamp must be similar to the external diameter of the seat tube.
How do you mark your seatpost height?
Measure from the center of the bottom bracket to the top of your saddle running the tape measure parallel with the seat tube and note that number
. That’s your saddle height, and it stays constant if you change bikes, posts or saddles.
How do you measure a saddle seat?
It’s easy to measure a western saddle’s seat size.
Use a retractable tape measure. Start the tape measure behind the swell and stretch it across the seat to the front of the cantle
. That measurement is the seat size.
What happens if saddle is too high?
A saddle that is too high will
cause the hips to rock back and forth
. Not only does this detract from pedalling efficiency, but it can also be extremely uncomfortable. Discomfort can show up in your lower back or as knee pain (especially in the back of the knee).
