[buildyourown]

See my post, 3rd one in the thread, for that same idea....pretty much.

Hey, that was my idea first. I mentioned it in the 2nd post in the thread. I already applied for the patent at the internet speculative engineer patent office.
No really, I went ot engineering school. Sort of.....




I don't have the book in front of me, but I'm pretty sure the UCI says you can't have any device that stores energy. Having a flywheel spin up to speed isn't any different than charging a battery that runs a motor.

 

[dante]

so wait a second, you mean to tell me that the kid who won the 2003 NORBA series also won the 2004 NORBA series?? OH MY GOD IT MUST HAVE BEEN THE BIKE HE WAS RIDING IN 2004!!!! We already saw that he's a fat, out-of-shape DH'er who spends more time smoking weed and gorging himself on Krispy Kreme's when the munchies set in than actually training or even riding bikes for that matter!! So Honda took this poor street urchin who was huddling on door steps to stay out of the rain, handed him this magical bike and he went from zero to HERO?? Oh my god, I can't talk anymore, must go secure film rights to this story so I can sell it to Disney!!!

:evil:

(saw minaar at mt snow. he was pedaling when other people were braking. he's f'ing fast, and custom tuned gearing, shock setup and geo only make him go faster. oops, sorry about that, back to discussing the bike... )

 

[zedro]

When you brake, you are turning inirtia into heat. Why not store it?

store the heat? like to make hot-dogs after the race?

 

[zedro]

I don't have the book in front of me, but I'm pretty sure the UCI says you can't have any device that stores energy. Having a flywheel spin up to speed isn't any different than charging a battery that runs a motor.

oh now your stealing my argumentative ideas!

 

[RhinofromWA]

I don't have the book in front of me, but I'm pretty sure the UCI says you can't have any device that stores energy. Having a flywheel spin up to speed isn't any different than charging a battery that runs a motor.

Would that make a bike that exhibits brake squat (storing energy in compressing the suspension), illegal?

 

[dhtahoe]

Ok again... This gearbox thing is not about storing energy. Kinetic Energy is energy in motion and not stored. This would be "skirting" such a rule. A flywheel is kinetic energy... not stored energy.

 

[zedro]

A flywheel is kinetic energy... not stored energy.

thats not true, a freewheeling flywheel which is not producing any work (or imparting its energy for that matter) is potential energy, just like a paper weight thats actually flying over 25,000km through the universe isn't considered kinetic.

bah its all relative....

 

[ÆX]

i don't think the gyro efect would be any more than a big dh wheel.
the radius would be a lot less making it have less gyro efect.
if it does have one it seems like there is no problem whipping it.

or mabey the gyro is still in this pic and he just spins it up when he is trying to hold a strait line.

 

[Toshi]

i don't think the gyro efect would be any more than a big dh wheel.
the radius would be a lot less making it have less gyro efect.

if the flywheel was small and light, then it would have to spin very fast to store a useful amount of energy. my intuition is that for a single flywheel the gyroscopic effect would be only dependent on the energy stored, and independent of the flywheel radius.

 

[RhinofromWA]

You guys want to see a gyro effect crack the throttle on an old 500cc 2 stroke dirt bike and try to change direction.

I had my fathers out and tried to jump over a rise and turn as I left the the lip like I did on my 250cc and my brothers 125cc to set up for the landing. Fathers bike shot straight out and for the life of me I couldn't get that thing to turn. I ended up landing off the trail and stopping about 15ft into a field. I learned to respect the effect of alot of metal spinning at high speed. Actually kinda scared me. It was amazing how power full it was.....it jsut wanted to hold it's direction no matter how big my eyes were and how much my arse puckered.....I ended up in that field. Damn Gryos......

LOL

His bike was a 1986 Maico(M Star) 500 the enduro version that was air cooled(the motoX one was watercooled) It was similiar to this one I found on the internet....1985 MStar 500

Closer to teh 1986 CrossCountry model seen below and to the left:

 

[dhtahoe]

thats not true, a freewheeling flywheel which is not producing any work (or imparting its energy for that matter) is potential energy, just like a paper weight thats actually flying over 25,000km through the universe isn't considered kinetic.

bah its all relative....

But still not stored... right.

Damn I always get those two confused

 

[XpeteX]

store the heat? like to make hot-dogs after the race?

Like this fella here with a hotdog boiler (don't ask, Norwegians are weird cooking their meat -hence me beeing a veggie )

also: I think people need to take notice to Westy's explanation more carefully, that's the one I'm buyin'

 

[zedro]

But still not stored... right.

you mean the paper-weight right? that has stored (potential) energy. Any mass acted on by gravity has potential energy....but could be considered kinetic under another reference.....ok forget i said anything

 

[BRacing]

Very interesting thread. Are monkey's supposed to be capable of this type of thought?

With the flywheel effect, remember that you'd have to spin it up to speed - which is going to take MUCH more effort off the starting line. And if you go to sprint out of a corner faster than the flywheel is spinning, then you're also accelerating the flywheel - which will require more effort.

The flywheel would act like heavy DH wheels/tires. Only if it was mounted to the main frame, then it would be sprung weight (unlike the unsprung weight of wheels/tires). Additional sprung weight would probably make the bike more stable by resisting changes in direction. This would cause the suspension to work harder to cope with the bumps.

I don't know where this is going, but it sure is interesting.

-B

 

[bizutch]

Blame DHTahoe...he's teh one telling us all this amazing stuff they've pulled off before. I just keep hearing my science teacher saying "If you can dream it...you can do it!"