Up next in 10
The designer of the 2019 YT Jeffsy gives us a run down of the bike.
Read our first ride review here: https://singletrackworld.com/2019/01/yt-jeffsy-cf-29-pro-race-2019-first-ride-review/
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[Music]
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[Applause]
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[Music]
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[Music]
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hi this is Hannah from single track and
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I'm here with Willie from YT bikes with
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the new jeffc which I've been out
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testing in Portugal so Willie why don't
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you tell us what is new about the MK2
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jeffi and why you've done it so what we
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have here it's the 29er uh MK2 of the
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jeffi what we did on the bike was some
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some uh improvements um what we learned
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over the last three years with the MK1
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especially under the 29er some what we
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did is we we uh extend the the lineup
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with another size so we go for five
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sizes now right from small to XX large
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uh which gave us the freedom to to make
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the reach longer and to to gain the
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option for end consumers that they could
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choose uh the the right reach position
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they want to have on the bike okay so in
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parallel we did the same thing like with
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the Capra we shortened the seat tubes so
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we consider the things that we we have
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150 170 mil drop a post on the market
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now available and that we do not limit
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people because of the length of the of
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the of the uh legs to use a bike with a
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longer reach right so this was the the
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basic basic things what we did uh we
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steepened up the the SE tube angle to
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77° at the 29er which is pretty steep
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and uh 76° at the 27.5 in bike uh and to
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get the same more or less riding
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position so the horizontal top tube we
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make the reach longer right so the whole
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combination leads to an an improved uh
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uphill performance and uh we gained this
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extra reach which is also uh is the kind
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of uh that's what the people like to
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have it's the fashion yeah I would not
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say It's Fashion it's a it's it's a
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development it's a development because
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nowadays you have so many options to
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ride bikes riding bikes faster riding
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bikes more often like all the parks
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trail parks all over so the the average
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Rider developed so fast and so good so
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this is not a trend it's like that's a
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normal development of of the bikes uh I
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wouldn't say that we are super New
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School uh we we do it really really uh
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really good uh but with the extra size
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with the fif fifth size XXL so we we we
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have this option so with my size 1 M 76
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77 I could go for medium personally at
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the moment I WR a large but the seat
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tube height will not limitting me to go
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also for extra large yeah so this is
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what we did so this the same thing like
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with skis okay so you've done some some
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kind of changes around the frame with
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the the like you can get a bottle in
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there now as well is that right yes
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exactly we had a bottle before at the at
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the jefy MK1 um and uh what we managed
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now is we used the fit lock system this
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magnetic uh and magnetic and uh uh form
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fit system from fit loock and we managed
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to have a 600 mL bottle now inside the
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bike and this is 600 M fits from small
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to XXL this was one of the targets we
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had so we gained uh 100 ml more yeah
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yeah so there's a special cover um that
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you can put on that will either cover
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the tube completely and make it
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watertight or you can use it to use a
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normal bottle cage as well can't you it
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it's some some from the from the large
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size frames on some normal bottle cages
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also the the standard bottle cage we
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have from the MK1 will fit and also the
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let's say older bottle will fit from
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large from the large size on from the
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large size yes so and uh but if you
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don't want to ride with a bottle you
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just use this cover plate and then the
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frame looks completely clean yeah yeah
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and and is watertight as well isn't it I
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think you said yeah for when you're for
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when you're cleaning it um you're not
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going to get water inside the frame
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through a little rubber valves exactly
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there's an a kind of o-ring to to Really
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seal this area that no water comes into
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the frame because we have the B holes
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there okay and you've done a few bits of
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of that kind of um longevity stuff to it
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as well so you've got the the bolt on
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frame protection underneath now as well
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so with with kind of cleaning and
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maintenance in mind I think yeah that's
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all these things we we we since we are
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doing the World Cup racing we collect so
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much experience also from there and uh
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we had the the the normal pu down
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protectors which were glued on with 3 m
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foil which is not too bad but if you
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wash the bike a lot of times um so the
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the the down to protectors could get
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loose so you need to remove them and
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glue them new on it and at this one we
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do the same thing like on the gravity or
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on downhill bikes we have a bolt bolt on
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uh uh protector which is injection
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molding a pa uh carbon fiber reinforced
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material okay yeah and so this is the
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one that I've been riding it's actually
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got uh crank boots on it as well hasn't
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it is that is that standard that's a
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standard on the carbon on the carbon
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cranks we have the crank boots on it
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because um uh you that's that's how
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bikes are at the moment I can see that
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I've made use of them as well yeah you
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make always use of them when you go to
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to Rocky sections and routy sections and
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uh nowadays you you ride the bike like
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the 29ers is around about 3 cm BB drop
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to the axle that's what what makes a
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29er so nice to ride because you're so
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deep into the bike but in and in
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parallel you have 15 cm of travel mhm so
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it it could happen that you touch
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something and then you you should
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prevent prevent the carbon fiber from
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getting yeah getting
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contact UM and then what else was new oh
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you've you've got some some different um
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kind of parts in around here haven't you
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that sort of yes explain what those were
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what what we did it's the same story we
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we we did at the at the Capra what we
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have is the inside the seat stay uh the
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seat stay protector is now guiding till
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the till the end of The Hanger mesh
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hanger here MH so it's it's protected
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completely inside especially when you
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remove a rear wheel that the chain is
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not dropping against the against the
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carbon fiber we also enlarged the the
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interface uh for the mesh hanger here so
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back at the MK1 we had a an uh a steel
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part like here Y at this area we erased
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that and we made the the whole range the
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whole width of the of the MH hangle
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wider so protecting the frame to get in
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touch with the chain
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and also uh it's also when when you when
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you touch it it's just one feels like
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one surface so the chain is always
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guided guided through around the the the
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the carbon parts right that was really
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important for us um and then there was
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also you've designed some sort of well
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to keep out mud shelves in in around
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here it's not been so muddy today so but
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but yesterday was was was pretty muddy
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and that's what we tried to do
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especially here in this area where the
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where the the mud is coming from the
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tire
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we brought the rocker arm in really
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close kind of into the seat stay M and
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so that when there's mud it could pass
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through so that it becomes more
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clearance we also try to do this as as
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much as possible at the rear end
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especially at the chain stays here uh so
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that's why the chain stays drops so back
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down to make it stiff enough but also
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create clearance that's always not so
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easy with a 29er because you want to
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have the rear rear wheel the rear end as
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as short as possible we do not do a
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super short rear ends we have from the
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small and the medium one has a different
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length that the the large the extra
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large and the XX large so it's size
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adjusted Y and um yeah mud pockets and
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giving clearance for dirt this was an
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super important thing and it's very
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important to to our readers in the UK
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especially yes yeah yeah for sure we are
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YT is super influenced by the by the UK
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system we have such a such a wide uh
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customer base there right yeah and this
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is super important thing for us what we
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also did is that like the when you
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handle a bike it mean when you do some
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maintains on it we did the same the same
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thing like we did on the 2s on the DH
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bike for the World Cup downhall team so
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everything every single Pivot Point you
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could reach in this case from the left
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hand side from the other side so when
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the bike is on the stand you could check
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every pivot point and the the shock and
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everything from one side right which is
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makes handling the bike and servicing
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the bike uh way easier okay yeah and
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then it's it's a bit stiffer in the
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frame up the front as well is yeah yes
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exactly the the overall stiffness the
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measurement from rear triangle to the
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Hat tube it is more or less the same
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like the chfi before because we felt the
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the handling of the bike in off camber
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section routy sections was pretty pretty
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good the kind of flexibility we had in
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the frame
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but um to improve the bike we we made
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the decision to stiffen up the front
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triangle so the head tube and the BB
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stiffness is really increased H also
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under the also under the fact that this
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Frame is way lower than the MK1 so the
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overall riding behavior from the
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stiffness point of view from front to
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rear angle stays the same but um the
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front triangle is stiffer right so and
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that's what you what you directly feel
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with the bike
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cool right well when will this be
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available in uh in the UK then in the UK
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then we will launch the bike uh
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beginning of January and then we will
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have bikes and stock already straight
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away straight away okay so save your
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Christmas money then that that
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absolutely makes sense if you've already
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spent it it's
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tough thank you very much thank you hn
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