Bullet vs Prince Rupert’s Drop at 150,000 fps – Smarter Every Day 165

Bullet vs Prince Rupert’s Drop at 150,000 fps – Smarter Every Day 165
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Warm Regards,

Destin
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How to save 30 watts of drivetrain losses using only your chain! aka Friction Science in 8 steps

How to save 30 watts of drivetrain losses using only your chain! aka Friction Science in 8 steps
Here we examine how serious riders can save 30 or more watts in drivetrain losses by paying attention to their chain alone! In truth you can only “limit losses” and never truely gain watts because every bike loses watts / power in the mechanical parts. If you made all these mistakes we estimate it could cost you 34w. However by paying attention to these 8 steps you could turn -34watts into only -4 watts of losses. This could be very important to timetrialists looking for marginal gains. If you want to look into these drivetrain losses in more detail I recommend: http://ift.tt/28UfNty. Also search velonews for other articles on this topic.

Here are the tips one by one
1:30 Quick clean on the bike (12w)
1:43 Quality manufacturer (5w)
2:07 Chain length (4w)
2:35 Cross-chaining (3w)
3:10 Chain specification (11sp) (2w)
4:32 Chain wear (2w)
5:15 Deep clean off the bike (1w)
6:06 Super lube (4w)
via YouTube

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Tokai is open (on weekends). Thanks to all involved. The #mountainbiking trails are looking great and the fun factor is way up there. Serious climb up but what a jol coming down.

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Pod of 60 Humpback Whales in Cape Town | 4K Drone Video

Pod of 60 Humpback Whales in Cape Town | 4K Drone Video
On November 26, 2016 I captured some incredible footage of a pod of at least 60 humpback whales migrating south past Cape Town.

Produced by Kieran Donnelly for Sky Reel – http://www.skyreel.co.za

Gear:
DJI Phantom 4

Software:
Adobe Premiere Pro CC

Find Kieran:
Instagram: @kdonnellyza
Twitter: @kdonnellyza
Snapchat: burgerboykd

Music:
Kindred – Glimmer
https://www.youtube.com/watch?v=PuzuD1PMdyc
via YouTube

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Tokai mountain bike trails reopening guide

Tokai mountain bike trails reopening guide
Renay Goustra guides you through the new Tokai trails.
via YouTube

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