Added a comment to Highsider's bike check 8/13/2016 1:06 PM
C138_img_0030skl

Do you have a build log anywhere? This looks like it's a home made carbon fibre frame, i'd love to hear about the manufacturing process. I'd also love to hear about the design process if you have any details.

+3 3 0

Members who like this comment

  • Vital MTB member jason.west.750
    23802 jason.west.750 http://p.vitalmtb.com/photos/users/23802/avatar/c50_fb_picture_1546987039.jpg?1366592577 http://www.vitalmtb.com/community/jason-west-750,23802/all 04/21/13 5
  • Vital MTB member Elipirelli
    25110 Elipirelli /images/default/avatar/c50.png http://www.vitalmtb.com/community/Elipirelli,25110/all 06/06/13 1 13
  • Vital MTB member Dingus518
    40976 Dingus518 http://p.vitalmtb.com/photos/users/40976/avatar/c50_speedbuggy_1464052393.jpg?1464051793 http://www.vitalmtb.com/community/Dingus518,40976/all 05/23/16

This setup has 3 comments.

Added a comment about photo Metric FOX Shock? 7/31/2016 2:01 PM
C138_ltr_0998

Why is it a surprise? Scott confirmed that the new Spark will have metric shocks and they have been showing it with a FOX shock with trunion mount at the aircan. And the new 29 Slash also has a trunion mount X2, which would indicate a metric shock as well (given Trek's range moving to metric shocks).

-1 0 1

This photo has 2 comments.

Added a comment about product review Tested: 2016 FOX Float X2 2-Position Lever Shock 7/31/2016 1:48 PM
C50

"whilst remaining unaffected by shorter, sharper movements like those of your weight transferring with each pedal stroke (chief cause of pedal bob)"

I understood this (movements part of the quote) as CoG position changes due to pedalling and that causing the pedal bob, not the acceleration induced weight transfers. That's the issue i had with the written part. A misunderstanding then.

0 0 0

This product_review has 17 comments.

Added a comment about product review Tested: 2016 FOX Float X2 2-Position Lever Shock 7/31/2016 10:50 AM
C50

"like those of your weight transferring with each pedal stroke (chief cause of pedal bob)"

Not exactly true, pedal bob is caused by the pedalling itself creating accelerating forces at the ground-tire contact point and the body not wanting to be accelerated much higher up. Thus it lags behind and squats the rear suspension (the rider basically rotates backwards). Anti-squat fights this by providing an opposing force to this squishing through suspension geometry. With no rider squishing the rear suspension (and all other forces remaining equal), the bike would extend in the travel when pedalling.

All vehicles exhibit this, cars squat under acceleration, motorbikes do as well, but the squat is constant there, since you don't have a 3 Hz force period, but more like a 16+ Hz (firing frequency of a 4-stroke 4-cylinder engine at 1000 rpm, double the number for 2000 rpm, etc.) force period, which makes it blur together into a 'constant' force with much less wallowing in the suspension.

0 0 0

This product_review has 17 comments.

Liked a comment on the item High-tech Axxios AXS Anti-Vibration System on Commencal DH Bikes 7/19/2016 9:58 AM

Powerbands for bikes! Looks like complete BS.

Added a comment about photo High-tech Axxios AXS Anti-Vibration System on Commencal DH Bikes 7/19/2016 9:56 AM
C138_tr_2163

Haven't seen piezoelectric strain gauges, they would be quite useless anyways (useable only for very dynamic measurements for example), but i must admit i'm not in these waters very much.

On the other hand, fitting the element, weither it being a 'coil'/wire or a piezoelectric element, a battery, a powering source (for the wire type), an amplifier (for the piezoelectric element), a DAC AND wireless communication, with it all being flexible and robust enough (let alone ensuring that the element will have a good enough joint with the base, where the strain is being measured and all) to be fitted into a sticker and randomly stuck to different parts of a bike, that i find impossible.

I am all for being proven wrong though, i just doubt it's possible.

MEMS devices are just chips, but still, that chip, batter, power and wireless communication components don't fit into a sticker in my opinion. Another problem with accelerometers being stuck on like this is damping of vibrations between the base and the source.

EDIT: notice, that in my first reply i said _wireless_ strain gauges and accelerometers. I know perfectly well how piezoelectric elements and resistive strain gauges work from college. It's just the wireless part that has me stumped (let alone the 'wireless-fits-in-a-sticker' part).

0 0 0

This photo has 26 comments.

Added a comment about photo High-tech Axxios AXS Anti-Vibration System on Commencal DH Bikes 7/18/2016 12:42 PM
C138_tr_2163

Pleasse tell me, how do wireless strain gauges and accelerometers work?

0 0 0

This photo has 26 comments.

Added reply in a thread How Well Do You Know Your World Cup DH Bikes? 7/5/2016 12:58 PM

Didn't notice the missing idler on Blenky's Norco, but i did notice 'Bruni's' Lapiere. And i noticed that Troy Brosnan apparently rides an Ohlins shock. Strange, i thought he was riding a Vivid

Oh, 15/15. But it could be harder, like having ... more »
Added a comment about product review Tested: FOX Transfer Dropper Post 6/17/2016 1:59 PM
C50

Thank you very much for the link, but i'm loving my Reverb on my Large frame (which should probably be an XL or the Reverb a 420 mm version instead of the 380 mm).

0 0 0

This product_review has 9 comments.

Added a comment about product review Tested: FOX Transfer Dropper Post 6/17/2016 12:09 PM
C50

What are the lengths of the extended post for different travels? Anybody know that? That 100 mm version might be good for smaller riders with small frames.

0 0 0

This product_review has 9 comments.

Added reply in a thread 2016 Fort William World Cup Thread 6/2/2016 10:24 AM

This is from the memorial run. Everybody participating had the same number. Would be nice to run numberplates like this one for the whole weekend. It would be an instant reminder for years to come watching the pics.

Added a comment about photo Jerome's Cannondale Prototype 5/16/2016 12:01 PM
C138_ews_wicklow_2016_14_2124

They can. Just like drastic changes, perceivable from 50 meters away, can have no effect at all on the way a bike rides.

To me it seems like an evolution, even though the bike looks completely new. I wouldn't be surprised if the swingarm and the seatstays are identical to the old ones, though changes here are easily made due to them being aluminium (for now, the old production bike was all carbon). I wouldn't be surprised if the front triangle is largely the same layup wise with just some strengthening around the shock mount and changed cable routing. The seatstay, most of the downtube and the top tube look very much like on the old bike. As i said, i doubt all the numbers are the same, but when you have four sizes of the old bike all calculated and ready for production, small changes around the details can't be that hard to implement.

Even the kinematics don't look like they changed a whole lot, though they had to have been changed going to a different shock. And that's more or less it. It looks like a new bike, yet it's more or less a clever evolution with the old, that seemed to work very well for Jerome. And they got rid of that custom pullshock, which is always a bonus. All in all a smart move for Cannondale i'd say.

I might be wildly off here and the new bike is in fact a clean sheet design, completely new layup, etc., but to me it just looks waaay too similar to be completely new.

0 0 0

This photo has 3 comments.

Added a comment about photo Jerome's Cannondale Prototype 5/15/2016 11:23 AM
C138_ews_wicklow_2016_14_2124

So, identical front triangle to the old one (with some numbers adjusted i'd say) with a moved shock mount, identical rear swingarm and a slight difference in the linkage then?

0 0 0

This photo has 3 comments.

Added a comment about photo 2017 Spot Rollik 557 4/17/2016 9:11 AM
C138_bt_20160414_untitled_shoot_122

Liking the actually 76° seat tube.

Is FOX in on the metric game as well?

0 0 0

This photo has 3 comments.

Liked a comment on the item Durango Blackjack Custom Sizing - XXS-XXL 4/17/2016 8:01 AM

frame only option is $4800 !? The bigger bike pictured (the black one) is a Large and the smaller red bike is an XXL!? How can I be sure my deposit won't be spent on all the crack they are smoking?

Added reply in a thread The Enduro "Craze" and Safety 4/8/2016 11:24 AM

The Bell has become VERY popular in my riding circles. Where i stick out like a huge sore spot. I come from the other side, i used to race XC and then i got an AM bike (meta 5.5) 8 years ago. And i finally swapped it out for a Reign last year. I'm no ... more »

Added reply in a thread The Patent Thread - New and Wild MTB Inventions 4/2/2016 8:45 AM

The Yeti linkage probably gives them a very (maybe even pure) linear motion without the use of custom sliders, as with Switch Infinity.

Added a comment about feature First Look, First Ride: SRAM Eagle 1x12 Drivetrain | The Front Derailleur Killer 3/26/2016 5:22 AM
C50

Yup. You'll be missing out on the new graphics and the new carbon layup though. Which is a major bummer!!!

+1 1 0

Members who like this comment

  • Vital MTB member Boolateekteek
    36106 Boolateekteek /images/default/avatar/c50.png http://www.vitalmtb.com/community/Boolateekteek,36106/all 06/21/15 7

This feature has 31 comments.

Added a comment about feature First Look, First Ride: SRAM Eagle 1x12 Drivetrain | The Front Derailleur Killer 3/26/2016 5:20 AM
C50

So thinner plates and narrower pins (that do not look out from the plate) are the only differences in this case?

0 0 0

This feature has 31 comments.

Added a comment about feature First Look, First Ride: SRAM Eagle 1x12 Drivetrain | The Front Derailleur Killer 3/25/2016 10:45 PM
C50

I think that means the chainring will work with 1x11 systems.

As for the cranks, most of Sram's cranks feature a removable spider. Everything from the S1400 series and up. Even most new Descendant cranks feature this as well. You remove the spider by undoing three torx bolts and mount that chainring in the same place.

You can put on a direct mount chainring, a 1x, 2x or a 3x spider.

+1 1 0

Members who like this comment

  • Vital MTB member Boolateekteek
    36106 Boolateekteek /images/default/avatar/c50.png http://www.vitalmtb.com/community/Boolateekteek,36106/all 06/21/15 7

This feature has 31 comments.