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gaberoc mikelevy's article
Sep 6, 2019 at 4:50
Sep 6, 2019
Tatze's Pedal is Just 3mm Tall - Eurobike 2019
Because stiffness is proportional to thickness cubed it would be 137% stiffer. Even then I'm not sure I'd want to ride them. They look a bit flexy to me.
gaberoc ben-cathro's article
May 30, 2019 at 18:29
May 30, 2019
Video: CathroVision Track Walk - Fort William DH World Cup 2019
Cannondale. Talk nerdy to me. I want it deep.
gaberoc mikekazimer's article
Apr 17, 2019 at 12:49
Apr 17, 2019
First Look: Push Unveils HC97 RockShox Charger Damper Upgrade
@tcmtnbikr: Compression damping is impulse dependent. Impulse is roughly force*time and force = mass*acceleration. Therefore the impulse is basically dependent on weight of the rider and how fast they are going. Because HSC damping requires 'opening' the HSC circuit with the impulse if your mass is small (160# here) and/or your speed is average to slow you get too much HSC. If you're a light rider because compression damping acts in the same direction as the fork spring if you run more sag (lower pressure) you can get the HSC circuit to open up a bit more on smaller hits so the overall ride is smoother. On the other side heavy riders run less sag when the HSC isn't enough to help 'hold up' the fork on small bumps.
gaberoc mikelevy's article
Mar 28, 2019 at 6:08
Mar 28, 2019
Suspension, Anti-Lock Brakes, and a Dropper Post Cable Kit - Taipei Cycle Show 2019
As others pointed out that isn't an anti-lock brake. It's just a brake limiter. I bet it's not even a true "pressure limiter" but instead just a one-way needle valve so you are really just slowing the speed the brake fluid enters the caliper when applying the brake. This is beyond terrible.
gaberoc jamessmurthwaite's article
Mar 18, 2019 at 12:01
Mar 18, 2019
Video: A Home Made Air Powered Bike
I was really hoping for an adaptation of one of these: http://www.stringbike.com/ This is really the perfect platform for an air powered bike.
gaberoc jamessmurthwaite's article
Feb 14, 2019 at 5:37
Feb 14, 2019
Bike Shop Employee Seriously Injured Attempting to Stop Thieves [Update: Thieves Arrested]
@oscartheballer: The article doesn't say she has no insurance. There is a GoFundMe with a goal of $25,000. That's not enough to cover her med bills, that enough to cover her deductible and buy a few Chinese take-out meals when she gets out of the hospital and maybe some clothes or other odds and ends that need to be different during recovery. Keep being Rad Megan. Speedy recovery! Have meal on me during recovery!
gaberoc RichardCunningham's article
Nov 2, 2018 at 6:31
Nov 2, 2018
Review: Box Two 11-Speed Drivetrain
The Box Foxxer xc fork. I want to see that argument.
gaberoc mikelevy's article
Nov 1, 2018 at 5:53
Nov 1, 2018
Here's a New Standard We Should Get Behind - Taipei Cycle Show 2018
Aligning a line and a slot by eye is hardly an accurate system. that slot looks huge compared to the width of a line. add to this the fact that when you tighten the stem you move the slots closer together. Ugh, disaster.
gaberoc mikelevy's article
Oct 25, 2018 at 9:44
Oct 25, 2018
First Look: Trust Performance's $2,700 Carbon Fiber Linkage Fork
Do you work for NASA? Your conversions are a bit off. 1.7Kg is around 3.74lbs. and were did the 1.7kG come from? Even the fox 34 27.5 weighs 3.90 lb / 1770 g so that's not even close to reality. This fork will work for 29ers so it's better to use the 3.95 lb / 1790 for the lightest 29er version of the Fox 34. Either way, it's certainly in touch on weight.
gaberoc rossbellphoto's article
Jul 11, 2018 at 18:07
Jul 11, 2018
Tech From The Andorra DH World Cup 2018
Another apologetic engineer here. Your understanding of the forces in the brake/axle mount are also a bit skewed. Because torque is a free vector (meaning it doesn't matter where you apply the torque, it's always a twisting motion) the brake mount will want to twist out of the frame in a clock-wise direction. The bolts are loaded in shear when the brake is applied. The torque applied by the brake is (as you point out) limited by the traction of the tire/dirt so assuming sufficient power of the brakes you're right about thermal concerns being paramount. Larger rotors also mean that it takes less lever force to reach the torque limit of the brake (aka, locking up the rear wheel) and since that lever is powered by the rider larger rotors on steep tracks can result in an improved rider experience.
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