REVIEW: New Specialized Demo 29 Downhill Bike

REVIEW: New Specialized Demo 29 Downhill Bike



you know dude what's up vital viewers this is the all new specialized demo to nine now the previous demo had some incredible results so how do you improve on that it starts with the suspension design which meant completely reworking the frame this black has already seen some incredible finishes and her guys like Loic and fin at the World Cup level so clearly whatever it is they're doing is working exactly what have they updated though let's dive in for 2020 you're looking at a new chassis kinematics geometry and wheel size this 29 inch alloy only downhill bike has 200 millimeters of travel front and rear an updated FSR suspension design keeps weight low and has a more rearward axle path than the previous demo thanks to the new main pivot location this tame square edge hits better but they didn't go so far as to require an idler pulley the design also sees a 300% increase in a knee squat for a big pedaling improvement now especially I spent time testing more progressive links even on the previous bike and you're going to appreciate significantly more progression in the leverage curve thanks to a 70% increase in any rides the new demo is also more stable and less pitchy under heavy braking of course the geometry has evolved as well the three sizes have a 5 millimeter longer reach value much longer front center a slacker 62 point seven degrees head angle 58 millimeter offset Coleen's fork 8 millimeter higher bottom bracket for adding ground clearance and 20 millimeter longer chain stays to accommodate the big wheel and suspension design as well as improving high speed stability and cornering traction other details we did include great frame protection and a down tube cover plus optional external routing for those times you're in a pinch and with that it's time to hand it over to Brian Buell for some quality ride time in Port Angeles go tanks run down dry hell what were the three things that you guys were looking for out of this bike we were looking for comfort for the rider speed for the rider and control for the rider how many years in total two years I've been there nine years and we definitely had more engineers and resources on this single platform than we have on anything I'd ever seen before the previous bike was so successful I know a lot of people are probably just wondering why change anything at all it had multiple world championships and it seemed so dialed underneath louia can fin white go a different direction we had an extreme amount of success with the prior platform between a range of athletes over the years we're kind of dedicated to racing on this platform so we kind of let the engineers open up to these are the problems we needed to solve how do we do this and what we were working with prior didn't allow us to make the changes that we thought were gonna be necessary so kind of gave them full rein to do whatever they needed and whatever platform was necessary and whatever suspension design they needed to do we didn't need to stick within the parameters of which we had it was just open drawing board and in order to create the improvements that were necessary they needed to make some large improvements Brian and all the engineers at home redrew everything and this is where we're at my name's Steve slotnick product manager for the mountain bikes with the help of Brad we take her everything from some jumper on up through demo tell me about some of the R&D that you guys performed to get the demo where it is today we've gone so far as to over wrap aluminum bikes with carbon to mess with stiffness and really get the the chassis stiffness for the bike honed in tons of time shock tuning in all sorts of different locations bracket testing crazy geo mules all sorts of like modifications on anything from checking out how a bike breaks in a couple different positions to instance Center to links and leverage ratios like we uncovered a lot in this one so it's been a really cool product to work on how many bikes outside of specialized did you guys dive deep on to really kind of unlock what you guys were trying to do with the current demo here we spent a lot of time working obviously I'm like looking at our bike and looking at the research feedback from the prior generation demo we had a super-fast bike we knew it from all the great results we've had but yeah definitely just wanted to step outside of our comfort zone a little bit more and shoot we probably checked out you know eight or ten of our competitors bikes just to really just see what was going on and see if there were things that we could pick up and little traits that we liked and didn't like and just tried to roll all that knowledge into all the past experience we had with our prior chassis and just use that to augment what we had going on hanging out here with the Ryan Palmer he's been ranching for us from a mechanic's point of view getting your hands on these for the first time do you have any thoughts the bikes are pretty well put together everything's pretty smartly done I like the way that there's not a lot of washers just floating around like when you take the shock off the spacers have nice big shoulders on them so they rest into the holes in the frame really nicely the bolt heads they're actually sealed themselves so they prevent stuff from actually getting into the where the seal bearing is so it's just an extra layer of defense they're very well put together bike the only thing that I've noticed there's definitely some opportunity for cable rattle so that's just something you're going to want to try it quiet for yourself if you do come into that issue so how did the bike get on Brian found the new demo strengths are excellent rider balance within the bike and comfort at high speeds and when things get rowdy especially from a stability perspective the more progressive leverage curve also combats heavy g-forces really nicely but I love being able to carry more momentum thanks to those big wheels and rearward axle path the bike does take more effort to wrassle around on tight technical sections though and what about the combined 29 27 5 mullet bike craze that's sweeping race courses well the bike you can buy is 29 inch only for now but specialized says the demo will always evolve and frankly they're proving that at the highest level we'll see what the future holds is this a racers dream ride be sure to check out vital MTB com for Brian's detailed ride impressions and specialized calm for more demo details you

28 Comments on "REVIEW: New Specialized Demo 29 Downhill Bike"


  1. 300% increase on anti-squat ?
    So it's 60% + 300 % = 360%
    That's to damn high !
    360% AS = 36° pedal-kickback.

    But if 300% means 3x then the AS=180% wich is also high.

    Anything above 130% is not good unless you have an idler pulley

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  2. I still ride the specialized big hit 2 of 2011 with 26 inch wheels! The only thing I've changed is the handlebar, the pedals and the suspension setup. Now it has a rockshox boxxer rc and a vivid air rc2! The bike has already gone through so much and it just works awesome!

    Reply

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