Articles

Shop Talk: All About Specialized 29ers

November 7, 2019


Welcome to SBCU. Let’s talk about the trail
machine, the Stumpjumper FSR. Stumpjumper has a long history
within specialized, but the idea of the bike– being a bike
they climbs and descends equally well– has never changed. One of the most interesting
parts about the Stumpy is that it has lots of different
options. Now there’s 29 inch wheel size,
there’s smaller wheel sizes, there’s standard builds,
and then there’s EVO builds as well. So plenty to choose from, but
it’s important to remember to pick the bike based on what
your needs are out there. So if you want a trail bike– absolutely perfect pick
is a Stumpjumper. If you want to get a little bit
more crazy on your trail bike, maybe the EVO
is your style. So the difference between the
two is a couple of geo changes, and a little bit of
difference in between how it’s actually built out. But the frame platform
is the same So let’s talk about some of
the features on the frame. Tapered head tube on all the
bikes whether they’re carbon or aluminum. You have Command Post routing
on the carbon bikes, internally, down
the down tube. Or, on the non carbon bikes,
you have internal routing along the top here. As you get towards the back of
the bike we do a lot of Fox shocks with Brains on
the higher end. And then, to save a little bit
when you get a little bit more affordable bikes, you’ll
go to just standard Fox shocks on there. The shock extension on to the
shock link here, with full cartridge bearings, moving
back into the FSR. Now it’s important that the FSR
be on this bike, as with any specialized bike, but
this is a unique FSR. As with all of our experiences,
it’s built for the experience of the bike. So active and independent, but
an FSR that’s focused on doing everything– climbing, descending– really a beautiful,
all around bike. Last thing here is it you notice
that this frame does not have a front derailleur,
but it does have the provisions for putting one on. It’s a direct mount derailleur
so very easy to put on, takeoff, no matter whatever
flavor you want to run on your Stumpy. So the geometry on the Stumpjumper is super important. This is, like we said,
one of the most all-around, capable bikes. It has to climb, it has
to descend, it’s got to do it all. So that’s going to relate a lot
to how we put the package together, but there’s also, you
know, EVO’s and regular Stumpjumpers, 29 and smaller
inch wheel sizes. So the geometry– it has to be long in the top
tube, low on the bottom bracket, and nice and tight
in the rear end. That’s a general idea to give us
the handling that we want, but there are some
differences. The head tube angle on the
standard 29er that we have here is 69 degrees. As you go to an EVO version
that’s going to slack out a little bit. So you get just a little bit
longer wheelbase, little bit more travel, a little bit
bigger capability. The bottom bracket height– nice
and low on the bike– and it will change just a little bit
as you move in-between a standard and an EVO. The EVO will drop a little bit
along with getting a little bit more travel. And the rear end– very, very
short rear end– we want that because it’s nice and snappy
around the corners, but still gives you some room for those
high speed descents. Not gonna get all chattery and
start freaking out on you. So good specialized
style geometry– roomy top tube for a nice fit,
low bottom bracket, short rear end, and plenty of different
options, different wheel sizes– and EVO options as well. Another cool feature about the
Stumpjumper FSR is that we want to make sure we have nice,
low standover height. So it’s good for the fit, but
it’s also good to make sure, in case you come off the bike,
you’re not gonna end up hurting yourself. And we want to make sure that,
inside the main triangle, you can fit a full size water bottle
on any size frame. So you can carry as much water
as you want out there on the trail– very important to be
able to do those two things. So a lot of what can make a
great bike even better are the details on the bike. And the Stumpjumper has
that in spades. Up here, on the handlebar
cockpit area, we have a low slung handlebar. This is what we call
a mini rise– 720 millimeters wide. If you go to an EVO it gets
even bigger, to 750 millimeters, with our Sip Grip
lock-on grips as well. We have 130 millimeter travel
fork on the Two Niner. It goes to 140 on the EVO
version and even 150 on the EVO of the smaller wheel size. And when you get into the front
here you can see we have nice Fox forks on the standard
bikes, Pike’s on the EVO version, and then the Revol
Control trail wheels as well. On the S -works bikes the SL
wheels is super light– that’s your carbon rim. Remember that these are very
light, but they’re also built for durability. These are the trail versions
of the wheel so very, very strong wheels. It’s a good blend of lightweight
and stiffness. You’ll also notice that
you have a lever on your bike there. That’s your internally
routed command post– new design, nice and slick
looking here, but also just a third of the force required to
activate the lever than it used to be. And you still have those three
travel options all the way at the top, your cruiser position,
and all the way down at the bottom. Here in the middle of the bike
one of my favorite shocks of all time is the specialized Fox
Brain and autosag shock. So all kinds of crazy, cool
features in here. This shock is built for trail
riding so it has a different tune than say a Brain
on the Epic. It’s the same concept, but we
want to give the bike more efficiency by limiting how much
influence the rider puts into the shock, but still is
free to activate when it’s hitting the bumps. It just has a lighter tune, a
trail tune, to that Brain. The autosag is the same
as you’d find on any specialized bike– very quick, easy, and correct
to set up any rider to make sure that they get the proper
sag every single time. Moving to the back of the bike,
you see that we have XX1 on this particular bike. You can run single, you can run
double if you want to, and no problem to run either
different version. And what’s really a cool thing
about the Revol wheel is a very easy swap to go from a
standard cassette body to say an XX1 style. You just go ahead and pop off
one driver body, put a new one on, and you’re good to go. And one of my last favorite
super cool– nobody ever seems to notice, but– the clip
on chainstay protector. It used to be that when you
wanted to keep your bike quiet, you’d go ahead and wrap
a tube around there, put some junkie Velcro thing on. This is a snap on version, it’s
super integrated, goes on there, you’ll never
notice it at all. But it keeps the bike nice and
quiet, and also protects your frame if your chain’s
slapping around. So lots of fantastic features
on here, Stumpy, one of the longest running bikes in
specialized history, still one of the most fun.

Leave a Reply

Your email address will not be published. Required fields are marked *