NeedForSpeed said:
I'm assembling my first high-ish power ebike (~3k-5k watts), and not wanting to die, I'm wondering what are the inherent dangerous aspects of a fast 2 wheel vehicle (the vehicle itself, not external factors like other cars). I want my ebike to be as safe as possible at high speeds, so I'm attempting to explore what it is that differentiates a (i'm assuming safer) DOT approved motorcycle from my hobby ebike, e.g. tires that can handle high speeds.
Has anyone given thought to this? So far all I can think of is wheel/tires that can handle high speeds/potholes, but I'm stumped what else could impact the safety of a high speed e-bike. What else can go wrong at high speeds?
Ok, define high speeds. First thing to know is that a bicycle is not a motorcycle. It is not even a scooter. Bicycle parts are not meant to be used at highway speeds the way motorcycle parts are.
As far as it goes lots of ES members have considered high speeds. I, myself don't go high speeds around my city because the car just don't see bicycles. How do I know? I have been hit by a car riding my e-bike. That is not to mention the close call when a car cut me off and stopped in front of me and I literally flipped my bike in the process of stopping. The only thing worse then flying over the handlebars and looking up from the wet gutter at a front wheel of a car is seeing the sidewalk coming before smashing your head into it after being hit by a car.
The problem with trying to stop from a high speed on a bicycle is that you don't enough tire surface to stop a heavy bike. You can lock up your rear tire but you will still skid for a while. Hit the front brake too hard and you wash-out or skid straight into what ever you are stopping for. Or flip over the handlebars if your front break is too good.
That being said those who use fast motors use moped rims and tires to become more motorcycle like. You should use a very well built DH frame and forks and scooter rims and tires.
And you should make sure your neck is a swivel because the cars are the most of your problems, not your least.