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And you though your seat gave you a high voice...(5 posts)

And you though your seat gave you a high voice...RemmingtonShowdown
Jan 16, 2004 8:43 PM
I suppose this question is for all intents and purposes rediculious but had me wondering none the less. Anyone ever filled their tires with hellium? Seems like something I'd like to try if for no other reason than...why the hell not!!
re: And you though your seat gave you a high voice...xxl
Jan 17, 2004 10:31 AM
Yes, track guys have been known to try it; I think that one of the hour-record guys (Moser?) was supposed to have done it. Other than not really adding much in terms of performance, I imagine team leaders would get sick of their domestiques' "Alvin and the Chipmunks" impressions.
Helium is a limited resource...spluti
Jan 17, 2004 11:38 AM
which makes it expensive. It also is used to leak check high vacuum applications. Why? Because it is such a small molecule. If a vessel is leak tight with helium it will certainly not leak air or water. The problem is the conventional tubes, pumps, compressors, and air handling equipment we are used to as cyclists just won't contain that helium.
There wouldn't be a performance advantage anyway because rolling resistance is a function of PSI no matter what you fill your tires with. The weight difference being negligable.
Helium and rolling resistanceKerry Irons
Jan 17, 2004 8:34 PM
I would agree with you, but I do know that German service stations do a fair business putting helium in car tires for "improved performance." I can't see how this is possible, but they charge about 2 euros per car. The reason trackies use helium (from cylinders) is to reduce weight. When you pump a tire up to 10-12 bar pressure, you're starting to get some weight, and switching to helium would save roughly 10 gm per wheel. For a track event, you just pressure the tires from a helium cylinder just before the event, so the rapid pressure loss due to helium permeability is not an issue.
Argh!!!!!!! Cabin Fever!!!!4bykn
Jan 17, 2004 3:03 PM
I read this thread and I'm thinking if helium turns one's voice a few octaves higher, what if one somehow ingested some into the digestive tract. Chipmunk flatulence?

There lies one of the reasons I shouldn't drink and surf (the 'net).

Ride in Peace...Mike