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Ran in Bristol. view ridelog run
Sep 12, 2019 at 12:30
Sep 12, 2019
in Bristol. view ridelog
Sep 10, 2019 at 12:26
Sep 10, 2019
Rode in Glen Devon. view ridelog
Sep 8, 2019 at 11:26
Sep 8, 2019
quotes Glen Devon
11.8 km - 00:38 - 7 achievements
Hiked in Glentress. view ridelog hike
Sep 7, 2019 at 17:53
Sep 7, 2019
Ran in Bristol. view ridelog run
Sep 4, 2019 at 14:48
Sep 4, 2019
in Bristol. view ridelog
Aug 26, 2019 at 11:15
Aug 26, 2019
Ran in Bristol. view ridelog run
Aug 14, 2019 at 12:27
Aug 14, 2019
SNKYbsn jamessmurthwaite's article
Aug 7, 2019 at 8:30
Aug 7, 2019
Norco Factory Team Mechanic Lewis Kirkwood Thinks Mountain Biking Could be Giving us Bad Vibrations
@Rubberelli: I'm not really concerned with grip strength and neither is the OP's study. This is to review the lasting impacts on MTBr's due to hand arm vibrations.
SNKYbsn jamessmurthwaite's article
Aug 7, 2019 at 5:48
Aug 7, 2019
Norco Factory Team Mechanic Lewis Kirkwood Thinks Mountain Biking Could be Giving us Bad Vibrations
Excellent study and great to see the correct standards being translated over from the construction industry. I'd just like to point out though that the 5m/s-2 acceleration is quite low for typical working conditions. Construction works use tools like hammer scabblers or road breaks that can be in the region of 20m/s-2 although by all means far less exposure. Since hand arm vibration syndrome is an accumulative effect a life long multiple ride a week MTB'r is at higher risk than your average joe. However, the actual time descending on a typical day (for myself at least) is around 25mins/30mins on a 4hr ride for example, which according to the H&S exec (See below) @ ~6m/s-2 you would need to have around 45mins of descending to reach the exposure action value (minimum to hve lasting effects). There is an argument that on a day with lots of bike park laps and uplift you can get well above this 45mins descend time but even still you would be nowhere near the maximum limiting exposure time of 4hours @ 6m/s-2. I think this is something we need to be aware of and certainly advances in technology will help us, but unless you are actively working with these kinds of tools as an occupation, the additional vibrations from riding shouldn't be anything to worry about from a long term health stand point. Table 2 Simple 'exposure points' system Tool vibration (m/s2) 3 4 5 6 7 10 12 15 Points per hour (approximate) 20 30 50 70 100 200 300 450 100 points per day = exposure action value (EAV) 400 points per day = exposure limit value (ELV) Source: I'm a civil engineer and http://www.hse.gov.uk/vibration/hav/advicetoemployers/assessrisks.htm
Rode in Carron Valley. view ridelog
Jul 30, 2019 at 5:06
Jul 30, 2019
quotes Some night for it
11.4 km - 01:14 - 3 achievements
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