djumper99

I love bikes and race enduro...bro

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djumper99 jamessmurthwaite's article
May 24, 2019 at 14:59
3 hours
MIPS Acquires Fluid Inside Rotational Impact Company For $3.3 Million
That's cool and all but where's their report on WaveCel?
Rode in Cobble Hill. view ridelog
May 16, 2019 at 10:40
May 16, 2019
3,622 m - 00:28 - 3 achievements
Rode in Mount Tzouhalem. view ridelog
May 15, 2019 at 11:30
May 15, 2019
15.7 km - 01:44 - 3 achievements
djumper99 mikekazimer's article
Mar 19, 2019 at 19:47
Mar 19, 2019
WaveCel - Bontrager's New Concussion-Preventing Helmet Technology
@WAKIdesigns: I have to say as a engineering student studying helmets and concussions in cycling, your comment is pretty interesting to me. I'm curious why lab testing is not a credible source for you? Think about a bike crash that could result in a concussion. To simplify think of the crash in 2D. There is an x and y component to the linear force, a friction factor between the helmet and dirt, as well as friction between your scalp and the liner of the helmet. Additionally, there is the rotational force as you make contact with the ground. These forces can be figured out with a couple calculations and you could retest with different rider weights and speeds. As far as I can tell, you could easily replicate these conditions in a lab and I don't see why you couldn't get a very good picture as to how well a helmet will perform in real world conditions. I'd love to hear your reason. To me, the virginia tech helmet ratings seem quite well done and I would encourage you to look into their research https://www.helmet.beam.vt.edu/bicycle-helmet-ratings.html
djumper99 pinkbikeoriginals's article
Mar 1, 2019 at 9:28
Mar 1, 2019
Video: Friday Fails #58
@owlie: He's fine,I used to play lacrosse with that kid.If I remember right he walked away with only a concussion
Rode in Shawnigan Lake Quarry. view ridelog
Jul 24, 2018 at 20:35
Jul 24, 2018
14.0 km - 01:32
Rode in Hartland Mountain Bike Park. view ridelog
Jul 24, 2018 at 20:35
Jul 24, 2018
11.2 km - 01:53 - 6 achievements
Rode in Mount Tzouhalem. view ridelog
Jul 15, 2018 at 17:40
Jul 15, 2018
8.9 km - 01:18 - 2 achievements
Rode in Mount Tzouhalem. view ridelog
Jul 11, 2018 at 21:50
Jul 11, 2018
7.8 km - 00:43 - 1 achievements
Rode in Hornby Island. view ridelog
Jul 8, 2018 at 15:16
Jul 8, 2018
12.4 km - 02:04 - 2 achievements
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