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MIT Aluminum Bicycle Project 1974 (2016)

sheldonbrown.com

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Re: MIT Aluminum Bicycle Project 1974 (2016)

#151
post #89

Earlier quoted context omitted.

If one wants to do that kind of thing it might be better to fill the CFRP with something else-- stiff foam, balsa etc.

Yes, that is how carbon fiber racing sailboats are made

Yes, and it's a kind of standard thing 'sandwich construction'.

Re: MIT Aluminum Bicycle Project 1974 (2016)

#152
post #145

Earlier quoted context omitted.

> have a greater terminal velocity No, unless they're Russian, they're not free falling. They have greater potential energy. And also increased traction, increased rolling resistance, and increased losses in wheel bearings and drive components due to friction.

Terminal velocity still applies. Yes, it is because they have more potential energy (per CdA). Rolling resistance increases are pretty marginal with compensating tire pressures (i.e., higher). Wheel bearing losses are de minimis. Drivetrain component friction is not a function of rider weight.

> Drivetrain component friction is not a function of rider weight.

Wheel bearing friction, duh. If the rider stands up while pedaling, it does. :)

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