Protour

  • Member since Sep 4, 2011
  • 113 Followers
  • Vancouver , British Columbia
  • Male / 40

Canadian

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Protour pinkbikeaudience's article
Aug 26, 2014 at 22:52
3 hours
Results: World Cup Round 7 Meribel - Finals
jclnv, Yeah I meant too low. The Horst-link is lower but the rear axle isn't lower, and the slight rotation of the Horst-link doesn't even come close to making up for the dramatically lower concentric bottom bracket main pivot which largely dictates the axle path. I don't need to study the pictures anymore, you do. My turn for a question; What big-brand bike in the history of DH racing has a worse rear suspension axle path than the new Demo? There are none. Not to mention axle path imbalance between front and rear suspension, where the new Demo also gets the 'worst ever' billing and which is even more crucial in the steep terrain of DH racing. Another interesting point about front and rear suspension imbalance: The effect of instability as the wheelbase is constantly changing in tough terrain is exaggerated by the bigger 650b wheels because the relative wheelbase is shorter in comparison to having 26" wheels. Just because it's a big company doesn't mean they don't make mistakes. History has proven that and will prove it again. I think they got to caught up in the low center of gravity factor and missed the big picture.
Protour mikelevy's article
Aug 26, 2014 at 7:48
18 hours
Prototype Ghost Riot - Eurobike 2014
I took an oath of internet silence to focus on my goal of becoming a pilot some day. Then I found out I was color blind and my dreams were ruined. I struggled to find a new purpose in life, especially once I realized all ecology here is doomed. So now I'm focusing my efforts on bringing light to the idea of axle path balance between and rear suspension.
Protour mikelevy's article
Aug 26, 2014 at 7:37
18 hours
Prototype Ghost Riot - Eurobike 2014
Thanks for the introduction, Tom. It's no DW link, but also not some Special Ed project gone awry. . Instead of ignoring basic suspension design principles and just putting the pivots in stupid locations, claiming the superior Ohlins shock will make up for any deficiencies, and completely focusing on the appearance of the bike, they actually engineered the suspension design to improve performance.
Protour pinkbikeaudience's article
Aug 26, 2014 at 7:13
19 hours
Results: World Cup Round 7 Meribel - Finals
It has a very minor effect on the axle path. Adding a Horst link makes the suspension more active while braking or pedalling. Regardless of the Horst link being a little lower, it doesn't even come close to improving the axle path caused by the dumb concentric BB Pivot that is about 3 inches too high. It's the worst axle path ever, none of your redundant questions will change that.
Protour pinkbikeaudience's article
Aug 25, 2014 at 20:20
1 days
Results: World Cup Round 7 Meribel - Finals
The constant change in wheelbase due to the opposite angle of the axle path as the shocks go through their travel. The Trek axle path is not as good as a DW Link bike, but not as bad as the new Demo, which has the most immediately upward-and-inward axle path I've ever seen on a DH bike. Especially when you consider how low the Demo BB is and take into consideration the suspension sag.
Aug 25, 2014 at 11:28
2 days
Protour mikekazimer's article
Aug 25, 2014 at 11:14
2 days
First Ride: Diamondback Mission 27.5
sam rodda: "But on your 800mm chainstayed bike, and same reach (from BB to handlebars), are you gonna be any more stable as a rider? Barely, the contact points, pedals and bar, for your bodies weight on the bike are still the same. Therefore your base of support on the bike is still the same." Completely absurd statement. First you do acknowledge the longer chainstays will make a difference in stability, then in the very next sentance you pretend it doesn't. The contract points between you and your bicycle are a completely different subject than the contract points between your bicycle and the ground. I'm talking about traction here, I have no idea what you are talking about and I really don't think you do either. I never said the imaginary bike would be easy to bunny hop, but a bike with slightly longer stays gets better traction during cornering. But there are trade-offs, I'll acknowledge. But for steep DH and high speeds longer stays are more of an advantage.
Protour mikekazimer's article
Aug 25, 2014 at 9:17
2 days
Airborne Toxin - Review
I like the stem-cam view in the third video, makes it look like you are riding with no hands.
Protour pinkbikeaudience's article
Aug 25, 2014 at 9:15
2 days
Results: World Cup Round 7 Meribel - Finals
I feel like I make a pretty solid case against it here: http://m.pinkbike.com/news/specialized-demo-2015-2014-comparison-demo.html#cid934232 Watching the wheels bounce all over the place in the YouTube video is quite frankly, shocking. The axle paths are in completely opposite directions so the wheelbase is constantly changing, resulting in obvious instability: https://www.youtube.com/watch?v=i2gZ0aulUt0 Yes, I know the shock damping is not accurate. But the instability created by the opposing axle path direction is so bad it makes it look as if the axles aren't in the center of the wheels. When your wheels are constantly moving toward and away from each other so dramatically on steep terrain it compromises traction because the front wheel is forced to surge ahead with all the weight behind it, especially if you have the front brake applied.
Protour mikelevy's article
Aug 24, 2014 at 23:03
2 days
DEMO vs DEMO - Is Newer Better?
Ka-Braaaaap: "Just enjoy the races and awesomeness of all the bikes" That quote says so much about you, you should have just said: "Don't question the corporations, their marketing is awesome!" Aww, you don't want to talk about axle paths anymore, do ya? You are a fan boy who thinks its all the rider, nothing about the bike. Suspension engineering is Greek to you and you aren't fluent. Worst axle path imbalance ever.
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