Grumpy McTrumpy

don't know where to start. see whole thread.

your question should be more specific anyway. is it based on a real life experience or is this just a theoretical exercise?

datlas 

Fishy, it is RARELY worthwhile to do this, especially if the bike you start with is "entry level."

Maybe a new set of wheels may be helpful but most often this type of exercise is akin to putting lipstick on a pig.

joe_5700

I second this motion.

twobadfish

In a void with gravity and no air resistance on level ground. Will it require the same amount of power to propel the two riders in the OP forward from a stop to 15mph sustained for 1/4 mile?

If there are complexities that you are suggesting I'm missing then enlighten me.

Grumpy McTrumpy

depends.

make variables more strict. are they following a specific curve of power output? in other words, is this an all-out-sprint or is it steady-state power?

for an all-out sprint, I think the heavy rider and light bike will arrive first (by a hair) if the power curve is identical, because of the reduced resistance coming from the drivetrain and wheels. but only by a hair.

for a steady-state power output one could effectively ignore the resistances and just go with classical mechanics. both riders will arrive at the same time.

Grumpy McTrumpy

allow me to propose a situation where the roles are reversed and the advantage goes to the lighter rider and heavier bike.

cornering.

if your CG (center of gravity) is lower, then it should be easier to corner. especially on descents where you have to flip it from right to left.

halfspeed

No. That would require three lefts.

halfspeed

It's amazing the "facts" people will post just because they've heard it somewhere.

BLR_0719

AEO

the road cycling community is rife with superstition, assumed beliefs and other such unscientific stuff.
I think it's worse than religion.

I thought you knew that by now.

BLR_0719

We should start posting stuff like this in P&R. That plays knows how to keep points valid and un-fallacious

halfspeed

The audiophile community makes road cyclists look like a cadre of rationalists, skeptics and agnostics by comparison.

fishymamba

Is it better to lose 5lbs off your body or 5lb off you bike? Which is cheaper? I would say my body for both. I have lost 6lbs in 5 months of biking. My mile time has improved by 1:35.

travkat

do both riders ride this experiment expending the same amount of watts per kilogram of body mass? It would seem to me that if the two riders of different weight could both generate the same amount of watts then it would affect the outcome of this theoretical time suck.

Phantoj

Which is easier? If losing weight was easy, there would be no fatties.

Quel

No matter what, both your body and bike are too heavy. Just accept this and work on both.

rusted_rider

Thats the wrong fuel..........m_factorx19 sounds like a finely tuned machine,thats like putting cheap oil in a Porsche

rusted_rider

So true losing weight and staying fit actually requires continued disipline

revchuck 

If I had to ride with him, I'd want cheap oil in his engine and sugar in his gas tank!

M_FactorX19

trust me i eat a lot. i just burn it up. i do eat relativaly healthy.... except for all the ice cream i eat everyday. i also eat frequently since i have no fat reserves to keep me going.

AEO

spot on.

I_Like_Bike

Some people have more money than discipline.

halfspeed

ftfy

znomit

Incorrect
A goldmine requires you to dig to find the gold.