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GorgeousBeauGaston danielsapp's article
May 26, 2020 at 16:45
May 26, 2020
[Updated] Mountain Biker Attacked by Grizzly Bear Near Big Sky, Montana
As a statistician, I don't understand the automatic downvote of anyone carrying a firearm. It's a simple concept, better to have than want. You can always carry both a firearm and spray. Personally when I ride in Montana, I carry 2 Glock 20s with the standard 15 round mags in the magwell, with 6 spare 32 round mags I converted from a Kriss (uses the same G21 mag body), on a chest rig. Ammo I use is Cor Bon 220 grain. On each ankle I carry S&W 329PD .44 airweights, in case one of my ankles is disabled in the attack, full redundancy. Lastly I have a Derringer M-4 .45-70 in a compartment in my helmet as a last resort in case the bear is standing on my legs and chest. Now let's consider statistics: factually, we only know the man in the article has been on one MTB ride (could very well be more, but I don't want to speculate). We also know he was attacked on this ride. That's a 100% rate of getting attacked by bears. I personally have MTB'd in Montana 4 times with the equipment described above, and have been attacked 0 times. Random chance? Maybe. But again, better to have than want, I know I personally will go with my proven numbers vs. riding in Montana essentially naked as recommended by Pinkbike downvoters.
GorgeousBeauGaston Dannyzm1's article
May 23, 2020 at 19:29
May 23, 2020
GorgeousBeauGaston mikelevy's article
May 20, 2020 at 20:33
May 20, 2020
First Look: ShockTune is a Free Suspension Setup App
@sino428: You can definitely get good data from a modern smart phone IMU, but the "meaningful" part is where it gets tricky. If you made a really good machined aluminum mount, mounted the phone to your car, devised a way to calibrate it, you could absolutely do things like run a home brew traction control device with that resolution of IMU data from a phone. Looking for peaks in Z accel and trying to tune a mountain bike shock though? I'm skeptical no matter the accuracy whether that would be meaningful. One smart thing this company could do is have the users of this app opt in to sharing their data, so they could collect large amounts of traces with the phone type and hopefully bike info labelled, get some idea of what is "normal," adjust the filtering on certain phones that need it, and try to set meaningful baselines. This still has the problem with the mounts being inconsistent, different bikes having different geo, stiffness, vibration characteristics, etc.
GorgeousBeauGaston mikelevy's article
May 20, 2020 at 14:32
May 20, 2020
First Look: ShockTune is a Free Suspension Setup App
AS AN ENGINEER that works with IMUs for control of autonomous vehicles, I'm skeptical about this product. The first and most obvious issue is the mount - it's impossible to get it aligned (aligned to what is another question, I can think of various reasons to align it to different parts of the bicycle depending on suspension geometry and your tuning goals). If that position was somehow known and universal among all MTBs, the app would need some kind of internal calibration that takes averages of values at high speed and low yaw to determine what relation it is mounted in, because it's impossible for a human to figure that out especially Mike Levy with some old Topeak mounts and a rubber band. The other thing I wonder about is filtering and data rates. Every phone model is going to have different IMUs, and board design and OS both will affect how the acceleration data travels and can be consumed by apps. The app would have to know this and apply some kind of filtering so the data is equivalent between different phones and OS. Lastly is how do you tune the filtering in general - even purpose built equipment mounted properly and calibrated in a vehicle creates lots of noise for various reasons, a mountain bike will create absurd amounts of noise. On that graph, the time access doesn't seem to even have time labeled, and those spikes are meaningless to interpret without knowing their duration. A 60 m/s^2 spike over .01 seconds is completely different than one over .05 seconds. Haha! Actually, I just wrote all this to humble brag about being an engineer on pinkbike, but it was a trick, I'm actually a neurosurgeon that watches youtube videos about IMUs, oldest trick in the book, can't believe you read this wall of text. Happy tuning.
GorgeousBeauGaston jamessmurthwaite's article
May 14, 2020 at 11:54
May 14, 2020
GorgeousBeauGaston trek's article
Apr 9, 2020 at 9:43
Apr 9, 2020
Job Posting: Trek Santa Clarita Looking for Store Manager, Mechanics, Sales Associates & More
Not the best place to post this listing, everyone on pinkbike is either a doctor or an engineer.
GorgeousBeauGaston jamessmurthwaite's article
Apr 9, 2020 at 9:29
Apr 9, 2020
German XC Racer Helen Grobert Banned for 4 Years After Testing Positive for Testosterone
Maes had an extraordinary case of bad luck. He was almost dead in the middle of nowhere with no cell phone, and a doctor popped out of a bush with a rarely prescribed drug to fix it. Fortunately he was saved and a few days later won the EWS, a completely natural recovery from not feeling your leg due to an infection a few days earlier. Even more unfortunate, he had just gone from spending years as a mid pack to podium rider to a year of dominated both EWS and downhill, what a bad time to accidentally take a masking agent! Maes has to be the unluckiest guy since Lance.
GorgeousBeauGaston jamessmurthwaite's article
Apr 3, 2020 at 16:01
Apr 3, 2020
New Zealand Health Minister Criticized for Mountain Biking During Lockdown
I love the polls, nobody else plays the game where you try to choose the least common answer?
GorgeousBeauGaston OchainFactory's article
Mar 31, 2020 at 12:23
Mar 31, 2020
Video: The Ochain Chainring Spider Promises Chainless Performance
I'll stick with my homebrew solution: The Bungee-Chain™
GorgeousBeauGaston edspratt's article
Mar 3, 2020 at 19:51
Mar 3, 2020
Start List: Air DH - Crankworx Rotorua 2020
I read that as Presented by Busch, that would be a lot more fun
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