# Closest thing to a reliable 60 MPH Build

#### WouldBeBiker

##### Member
Wondering if anyone has ever seen an enthusiast build capable of reliably traveling 60 for long periods of time? Just curious as to how far people have taken this hobby to. Also unrelated, someone hit me yesterday with their car (more of a love tap, gotta love slip lanes....) and they bent my pedal in a bit so now it hits the frame of my bike a little and its kind of annoying. Should I bent it back and if so how or should I just replace the damn things?

#### GW's Motorized

##### Well-Known Member
Look up ghetto bike. I wouldn't do it, but some people have a death wish

#### Chainlube

##### Well-Known Member
Something like this might get you there, only issue is the watta pump.

#### Sidewinder Jerry

##### Well-Known Member
The thing one has to first consider is what force is being used to generate the speed. For example: In bicycle races Gravity can easily cause bicycles to reach 60+ mph. The frames and components are designed to handle high down hill speeds.

When engines/motors are being used to reach 60+ mph the frame and especially the stays have to be capable of handling the torque being generated by the engine/motor.

When Gravity is the accelerating force its power is spread out equally over the entire mass of the object. When an engine/motor is the accelerating force its power is concentrated into a small area where the rear tire makes contact with the traveling surface. It's because the force is being concentrated into such a small area frame stays and wheels can fail.

If you're going to try for 60+ mph speeds then you need to have the skills to make custom built frames.

#### WouldBeBiker

##### Member
The thing one has to first consider is what force is being used to generate the speed. For example: In bicycle races Gravity can easily cause bicycles to reach 60+ mph. The frames and components are designed to handle high down hill speeds.

When engines/motors are being used to reach 60+ mph the frame and especially the stays have to be capable of handling the torque being generated by the engine/motor.

When Gravity is the accelerating force its power is spread out equally over the entire mass of the object. When an engine/motor is the accelerating force its power is concentrated into a small area where the rear tire makes contact with the traveling surface. It's because the force is being concentrated into such a small area frame stays and wheels can fail.

If you're going to try for 60+ mph speeds then you need to have the skills to make custom built frames.
Not really trying to do it myself (yet) just curious as to what's out there.

#### Sidewinder Jerry

##### Well-Known Member
Not really trying to do it myself (yet) just curious as to what's out there

Then the answer is yes, there's those with a death wish who've put engines on a regular bicycle frame and gone over 60+ mph. YouTube has several videos of people doing this.

#### DAMIEN1307

##### Moderator
Staff member
Then the answer is yes, there's those with a death wish who've put engines on a regular bicycle frame and gone over 60+ mph. YouTube has several videos of people doing this.
YEP...I call them Dr. Jack Kevorkian do it yourself suicide machines...lol.

#### Sidewinder Jerry

##### Well-Known Member
As for the vehicle that hit you was it in the slip lane or were you in the slip lane? Since you're saying the crank arm bent, I'm assuming it's a 1 piece crank. To have bent one of those was certainly no love tap. Did the vehicle stop when they realized they hit you?

#### WouldBeBiker

##### Member
As for the vehicle that hit you was it in the slip lane or were you in the slip lane? Since you're saying the crank arm bent, I'm assuming it's a 1 piece crank. To have bent one of those was certainly no love tap. Did the vehicle stop when they realized they hit you?
i was using the crosswalk in the slip lane and they weren't looking forward when they started going and they hit me just enough to bend the crank like a mm.

#### Sidewinder Jerry

##### Well-Known Member
i was using the crosswalk in the slip lane and they weren't looking forward when they started going and they hit me just enough to bend the crank like a mm.
So were you walking your bike through a crosswalk like a pedestrian?

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