FreddyB Aviation Photography

So my Sondors is governed at 20 mph and I typically am moving at 16 to 17. Anything over that and you need a full helmet and leathers.

Assuming a 180lb rider hitting a stationary object

20mph collision = 3600lbs of force
30mph collision = 5400lbs of force

Furthermore a 2020 research study out of China showed a significant fatality risk "The analysis results show that, as for e-bike side collisions and e-bike impact speed is 20 km/h, the fatality risk of riders is approximately 2.9% at vehicle impact speed of 30 km/h, 23% at 50 km/h, 50% at 60 km/h, and 90% at 80 km/h"

23% fatality at 30mph
50% fatality at 37mph

Obviously crash dynamics are not this simplistic but shows the amount of force than can be exerted on a body. Your results may vary and there are tons of variable factors

https://www.tandfonline.com/doi/abs/10.1080/15389588.2020.1747614

https://www.mdt.mt.gov/visionzero/people/buckleup/deadly-equation.aspx

Dec 2 at 7:41pmWeb
Show threadxmarkDec 2
@cvvhrn I used to be an AGATT motorcyclist and 28 mph on my pedalec in a bike helmet and cotton long sleeves was fun, practical, unnerving, and probably unwise.
Show threadFreddyB Aviation PhotographyDec 2

@xmark

I feel you on that. Decades ago I drove a huge Harley once (I had ZERO business on a bike that big) and was helmet less but the wind in your air a feeling of freedom is hard to give up

That being said I will always remember this line from the owners manual our then new ML320 which we bought in 1998 and had our first taste of safety systems like traction control etc.

"No matter how good the safety systems are you cannot overcome physics"