2019 UCI World Cup Downhill Tech

Create New Tag

3/29/2019 8:43 AM

sspomer wrote:

assegai 29er dh casing weight from our test last year. not sure if breaker+ is more or less. it all adds up but unless a really pedally track or tight/twisty, would these weights be bad? stability in spades, right?

LTrumpore wrote:

Maybe if there were a track that required constant accelerations the added weight might be detrimental, but that doesn't really describe a modern DH track. The same could be said about 29 inch wheels, but the fact that almost everyone has made the move to the bigger wheels suggests more of a premium on maintaining and gaining speed, and a heavy tire while being more difficult to accelerate is also going to hold that momentum once up to pace (much like a 29 inch wheel). I believe it was Graves who mentioned this at Worlds in South Africa a few years back when asked why he was running DH tires when so many other riders were chancing it with trail casings, on a track with few slow speed accelerations he felt the heavier tires actually helped.

That said, I think most casual observers might be shocked at just how heavy both World Cup DH and EWS enduro bikes are compared to the stock versions, and how little the racers are concerned about it. Bike weight just doesn't seem to be a metric that greatly impacts race performance nearly as much as it does sales.

most bikes now a days come specked with lighter parts and tires.
My own bike witch is a yt capra 29 cf pro came with single ply tires wish give vague cornering feeling with load or poor flat resistance, 28 spoke wheels wish bend an touch the frame and once more give vague corner feeling , and don't ride at the speed that those guy's in DH or ews ride, once a put a proper wheel-set and tires que bike weighted 1kg more, and i am running DD tipe of tires, would be like 400g more if it was dh front and rear.

saying that a trek session xl weights 15.36kg says nothing, as it's a stock bike, if you guy and weight a xl session from TFR it will probably weight more as if you go and wight a stock v10 it will probably weight less

|

3/29/2019 10:17 AM
Edited Date/Time: 3/29/2019 11:00 PM

Minnaar’s brain broke when he saw that his 2019 all-carbon bike weighs 38 pounds. I predict more puzzling in the near future.

|

3/29/2019 12:03 PM

Woah. Minnaar off Gamut and running a Shimano guide this year it looks like. He's been running Gamut forever.

|

3/29/2019 12:12 PM

qblambda wrote:

Those are extremely heavy considering the amount of carbon...

Dylan wrote:

Longer frames and larger wheels are where the extra weight would come from.

For comparison, Minnaar's 2011 worlds bike weighed in at 15.87 kg https://www.sicklines.com/2011/04/01/santa-cruz-syndicate-preps-for-world-cup-greg-minnaar-bike-check/

qblambda wrote:

The Trek Session 9.9 29 XL is 15.36kg, aluminium wheels, saint groupset. Less than the 26" you pointed.
https://www.pinkbike.com/news/trek-session-99-29-review.html
The Cube 215 is also very competitive in aluminium...

Sure longer bike and bigger wheels may rise the weight, but years of research and experience are supposed to lower that weight too.
Those Santas are heavy.

I do ride a 29er 2018 Gambler in L +7 reach at 16.21kg tho...

You assume carbon is being used to reduce weight and not to improve stiffness.

Also, some structures and shapes are only possible in carbon. Trek's design, very intelligently, needs a strong seatpost due to the loads being put into it, but the TT and DT could be a little less material and come out with a lighter over all product.

|

3/29/2019 3:49 PM
Edited Date/Time: 3/29/2019 3:49 PM

A bit off topic, but I know when I weighed a few bikes of a few top US guys last year (enduro) most were above 35 pounds. I'm not top guy but even mine was between 35-40 with nothing crazy in either direction except DH tires.

Now that enduro racing is basically just racing DH multiple times in a day, it should be no surprise most of us are running DH tires, sometimes even adding cushcore or similar.

Add DH brakes, DH cockpit, a dropper...and yeah, its hard to keep things low, regardless of if your bike is a "DH" bike or "enduro" bike. Frankly, I'm not sure I even want my bike to be lighter - 35 pound bikes are stable, more planted and less likely to deflect.

Put another way, if there is one thing I can't get over having made the switch to moto, its how much grip I have. Yes, the tires have a lot to do with it but so does all that weight pushing down into the trail.

There is a "goldilocks" weight for these things. I'd wager 35-40lbs is about right, depending of course how much real pedaling you end up doing.


|

3/29/2019 3:51 PM

Bikes are are getting faster, riders are getting faster and some riders are getting bigger, listen to Finn in the Wyn TV after Rotorua he's 20kilo heavier than he was 2 years ago but is now faster, a couple of pounds on a bike won't matter its all marketing so consumers who believe that rubbish keep buying stuff.

Sam Hills Nukeproof was like 40lb when everyone else was trying to get their weight as low as possible and he was still beating them.

Also a pound or 2 could be lost after after going to the toilet or gained if constipated :-) or in my case kilos haha

|

3/29/2019 5:28 PM

My medium size Specialized stump jumper expert weighs in at around 34 lbs. or 15.4 kg. I have found a heavier bike plows through chunk better than a lighter bike. You also have to factor in the massive size of Greg. Weight is relative to an extent. Also look at the Orange DH bike that has mounting bolts for weights plates. They say it smooths everything out.

|

Snoopin around lookin for the best trails and sketchiest lines

3/30/2019 12:29 AM

Not to mention that in Enduro specifically but DH too, you need to first finish before you can win, so durability takes priority over light weight with race bikes

|

3/30/2019 7:29 AM

atherton's prototype DH bikes from the london bike show (and dan's BMX whip...so slick). this is "P4" or prototype 4. have been told that gee is on P5 and Rachel is on P6 right now. trying to find out what the differences in prototypes are. will update if i hear, or you all can update if you already know.




dan's bmx bike which is a "passion project".

|

3/30/2019 1:56 PM

The Atherton bike is sick. Could be from my bmx background but I love that they used straight tubes. The designer in me HATES their logo though. Really wish they'd tried harder (or at all) on that.

|

3/30/2019 9:34 PM

It's a dh bike who cares about a couple of grams!!

|

4/3/2019 7:28 AM

bryceland back on a 29er trail bike

View this post on Instagram

Freshie built thankyou @cannondalemountain @larsenbikes @hamishpaine ! Back on 29 with 150 fork... ??

A post shared by josh bryceland (@ratboy_bryce) on


|

4/3/2019 9:00 PM



Wasn't Max Commencal against carbon??
|

4/3/2019 9:09 PM

"Wasn't Max Commencal against carbon??"

Ha, going to have to walk that back "FRO", "Found a good environmentally friendly factory" etc.
Maybe had his racers clamoring for it and watched sales of carbon bikes...

|

4/3/2019 11:23 PM

RiderMikeCheck1 wrote:

"Wasn't Max Commencal against carbon??"

Ha, going to have to walk that back "FRO", "Found a good environmentally friendly factory" etc.
Maybe had his racers clamoring for it and watched sales of carbon bikes...

01.04

|

4/4/2019 5:13 AM

Morrisgabriel wrote:

Wasn't Max Commencal against carbon??

You realize that this photo surfaced on April 1st right? Pinkbike literally has it highlighted as one of the cheesy industry jokes...

|

4/4/2019 5:32 AM


Sam Hill with a fresh new Nukeproof Dissent.
|

4/4/2019 7:28 AM

https://www.vitalmtb.com/features/2020-RockShox-Suspension-Overhaul-See-the-New-Signature-Series-Products-Charger-2-1-Damper-Update-an,2657


RockShox embargo has been lifted; Signature series announced (2.1 Charger Damper, MegNeg, "Ultimate", etc.).

I wonder when this will be available for retail.

|

4/4/2019 7:40 AM
Edited Date/Time: 4/4/2019 7:42 AM

Bird Cycleworks just posted this:



https://www.facebook.com/birdmtb.co.uk/photos/a.135411659977726/1014806142038269/?type=3&theater

Able to spec with the Ultimate with them in stock now.

|

4/5/2019 3:21 AM

Deans Gambler looking race ready for Aus National Champs

View this post on Instagram

Champs ready ?? @scottdhfactory #scottbikes #scottgambler #bike #dh

A post shared by Dean Lucas (@deanos_machineos) on

|

4/5/2019 9:57 PM

Troy running what looks to be some type of telemetry device at national champs. Measuring braking forces maybe?

View this post on Instagram

A post shared by Aaron Pelttari (@aaron_yo01) on




|

4/6/2019 3:59 AM

Aus Nationals and Oceania Champs (happening immediately after) will probably have more reveals in terms of bike and tech for World Cup riders.

I'm expecting online articles soon with bike checks and more. Also interested to see which riders not from Australia/NZ are racing in Bright, VIC.

|

4/6/2019 4:19 AM

Still surprises me how many DH pros still run the DT EX471 rims with 25mm internal width... guess this whole wider rim fad is just that

|

4/6/2019 2:45 PM

Sonofbovril2 wrote:

Still surprises me how many DH pros still run the DT EX471 rims with 25mm internal width... guess this whole wider rim fad is just that

Definitely a fad, the mountain bike industry can’t stop the endless dribble of bullshit running down it chin but somehow consumers lap it up!

I ran Sun Mammoth rims from 98-04 they were bombproof and 30mm wide, what was happening in years ago is happening now ie: wide rims, high pivot points/idler pulleys, twin shocks (if the new cannondale is anything to go buy, 2 different sized wheels, and even eleastomers haha.

Ps: can’t wait for the new season to see everyone’s team colours especially the syndicate!

|

4/6/2019 6:50 PM

peecee wrote:

Definitely a fad, the mountain bike industry can’t stop the endless dribble of bullshit running down it chin but somehow consumers lap it up!

I ran Sun Mammoth rims from 98-04 they were bombproof and 30mm wide, what was happening in years ago is happening now ie: wide rims, high pivot points/idler pulleys, twin shocks (if the new cannondale is anything to go buy, 2 different sized wheels, and even eleastomers haha.

Ps: can’t wait for the new season to see everyone’s team colours especially the syndicate!

#TeamColours thread...

|

4/7/2019 11:56 AM

Dylan wrote:

Troy running what looks to be some type of telemetry device at national champs. Measuring braking forces maybe?

View this post on Instagram

A post shared by Aaron Pelttari (@aaron_yo01) on




Its telemetry that measures all aspects of the bike. Brakes, suspension, everything. Whats next to the brake is the button that turns it on. If you look at Mark Wallace's bike in the Windrock PIT BITS you can see a few more sensors. Really cool and really "ahead" in terms of tech and figuring out how to get these milliseconds.

|

4/7/2019 2:25 PM

JackRice wrote:

Its telemetry that measures all aspects of the bike. Brakes, suspension, everything. Whats next to the brake is the button that turns it on. If you look at Mark Wallace's bike in the Windrock PIT BITS you can see a few more sensors. Really cool and really "ahead" in terms of tech and figuring out how to get these milliseconds.

Sounds like a similar sort of setup to what Danny Hart was running last year

|

4/7/2019 8:23 PM

Optical illusion or is Kye on a 29er sender?

|

4/8/2019 12:04 AM

MichaelMarsh wrote:

Optical illusion or is Kye on a 29er sender?

Well spotted. Those are definitely 29er boxxer lowers on Kye's Sender

|

4/8/2019 4:51 AM

MichaelMarsh wrote:

Optical illusion or is Kye on a 29er sender?

Dylan wrote:

Well spotted. Those are definitely 29er boxxer lowers on Kye's Sender

29/27.5 maybe frame looks exactly the same and he still seems to be riding a vivid which these guys were in for most of last year when everyone else was on the new deluxe shocks.

|