# 边际收益的磁滞

### 13 评论

• Jason Clarke

Is there any studies being done on the Hysteresis on wheels?
Having read wheel building books I understand that a wheel also flattens and rebounds as it comes around to the road.
How much energy is being lost with stiffer wheels vs a more flexible one?
Say with aluminum spokes or carbon vs steel spokes, and the difference in bladed, straight gauge and double butted spokes.

I actually had in the late 90’s the Spenergy SPOX wheels with the fiber spokes you could tie into a knot. They where actually really comfortable ride to them but also would flex on sprints and man if you had them on a trainer they would flex enough to rub your brake pads. Anyways I’m curious to the effect wheel material and there stiffness effects the Hysteresis.

• xcafe

Hysteresis is the term for processes that behave differently in one direction than in another. Understanding it is critical for flying, for dampened suspension systems, and for being aero on your bike. Yep, in this episode we’ll be making liberal use of analogies that include a Tempurpedic mattress, a rolling tire, mountain bike suspension and a fair number of Hitchhiker’s Guide and

• Steve Goff

Great episode. However, did I miss where I’m supposed to be able to use some of this information to determine my ideal tire pressure for various road conditions?

• Michael Reiter

As an airline pilot and a cyclist this episode was most enjoyable. Also, loved the “bonus content” regarding the history of the the word hysteria.

I have a question regarding what would be the most appropriate aero wheel set for me. I’m 5’6", 140 lbs. It’s often windy where I live. I’m more interested in climbing and not getting dropped from the group than sprinting.

Thanks.

• Alon

no. 1 tire with all your weight is equivalent to two tires, each with half your weight – meaning two tires do not have twice as much drag as one tire, but (because each tire is only bearing half the weight) the same amount of drag as riding a wheelie.