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Racing with 40 lbs in the rear tire

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Racing with 40 lbs in the rear tire

Old 07-12-08, 08:58 AM
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Racing with 40 lbs in the rear tire

I would guess that would slow you down. Bailed in the PP race today not too far from the end, rear tire felt mushy, looked down and it was very low to the point where I saw no point in continuing (this was lap 8 of 10 in Prospect this AM). I was actually fearful of the 35mph+ descent on a tire with <50lbs of air.

I would guess that semi flat would go a long way towards explaining why that race felt so hard for me today, although I think it was a fast pace, I'm pretty sure no breakaways succeeded. I would imagine it's harder going 30mph with 50lbs instead of 160 in the rear tire. I was even more fearful of trying to continue and losing all remaining pressure on my pricey Zipp rim at the wrong time. That would suck. Oh well.

Pcad's Bag of Excuses always has room for one more.

Last edited by patentcad; 07-12-08 at 09:02 AM.
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Old 07-12-08, 09:00 AM
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Its psi not lbs when talking pressure.
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Old 07-12-08, 09:04 AM
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Originally Posted by El Diablo Rojo View Post
Its psi not lbs when talking pressure.
You know what I'm talking about. Don't piss me off or I'll start posting in Celsius and Metric.
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Old 07-12-08, 09:06 AM
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Originally Posted by patentcad View Post
You know what I'm talking about. Don't piss me off or I'll start posting in Celsius and Metric.
Don't do that you'll have the entire BF community running for the calculators.....
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Old 07-12-08, 09:24 AM
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Originally Posted by patentcad View Post
You know what I'm talking about. Don't piss me off or I'll start posting in Celsius and Metric.
As you well should, old boy.
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Old 07-12-08, 09:33 AM
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Originally Posted by El Diablo Rojo View Post
Its psi not lbs when talking pressure.
Actually, it's psig. - TF
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Old 07-12-08, 11:20 AM
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I thought he meant 40lbs in the 'ol derriere?
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Old 07-12-08, 11:56 AM
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Actually, I didn't understand the headline. I thought you heard about some idiot who did training races with a tandem rear wheel filled with lead or something.
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Old 07-12-08, 12:18 PM
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Originally Posted by fix View Post
Actually, I didn't understand the headline. I thought you heard about some idiot who did training races with a tandem rear wheel filled with lead or something.
Same here, I saw the headline and thought that the idea of filling someone's back tire with mercury before a race would be pretty comical, aside from the entire toxic bit.
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Old 07-12-08, 01:03 PM
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Naw, with your weight on top of it, I'll bet it was up to 110psi. Did you measure when your fat a55 was off the bike?
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Old 07-12-08, 01:30 PM
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Originally Posted by patentcad View Post
I would guess that would slow you down. Bailed in the PP race today not too far from the end, rear tire felt mushy, looked down and it was very low to the point where I saw no point in continuing (this was lap 8 of 10 in Prospect this AM). I was actually fearful of the 35mph+ descent on a tire with <50lbs of air.

I would guess that semi flat would go a long way towards explaining why that race felt so hard for me today, although I think it was a fast pace, I'm pretty sure no breakaways succeeded. I would imagine it's harder going 30mph with 50lbs instead of 160 in the rear tire. I was even more fearful of trying to continue and losing all remaining pressure on my pricey Zipp rim at the wrong time. That would suck. Oh well.

Pcad's Bag of Excuses always has room for one more
.
Couldn't be bothered to watch the finish after you DNF'd? What must your sponsor think?
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Old 07-12-08, 02:26 PM
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Originally Posted by ericcox View Post


Couldn't be bothered to watch the finish after you DNF'd? What must your sponsor think?
I am the sponsor and I think I suck. But I did take the early exit opportunity to drive the 70 miles back to Chester, pick up my wife and daughter, and chauffeur them all the way to Kennedy Airport for their flight to Italy tonight. I got the Almost Five Borough Tour of NY City today (no Staten Island). I would have normally watched the end of the race, but I had some serious running around to do today, all on $4/gallon gas. Sometimes it can't be avoided.

My Zipp has been re-treaded and is ready for further action. I'll try this again next Saturday and barring a fatal collision resulting in a 5AM road closure on the NY Thruway (last race) or a puncture (today's race) I'll be hammering with the 35+ kids again.

Last edited by patentcad; 07-12-08 at 02:32 PM.
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Old 07-12-08, 02:34 PM
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Originally Posted by TurboTurtle View Post
Actually, it's psig. - TF
If we're going to talk metric, it's Pa or bar, isn't it? I can never remember which.

Race on!
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Old 07-12-08, 02:37 PM
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Dude, I pump up my tire to 120 lbs or 160 lbs. and so does everybody else in NY. You know what you can do with your psi mumbo jumbo.

That sounds like a good name for a shrimp appetizer. psi mumbo jumbo shrimp.
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Old 07-12-08, 03:10 PM
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Yikes, probably pretty squirrelly in the corners too.
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Old 07-12-08, 03:25 PM
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Originally Posted by patentcad View Post
I am the sponsor and I think I suck. But I did take the early exit opportunity to drive the 70 miles back to Chester, pick up my wife and daughter, and chauffeur them all the way to Kennedy Airport for their flight to Italy tonight. I got the Almost Five Borough Tour of NY City today (no Staten Island). I would have normally watched the end of the race, but I had some serious running around to do today, all on $4/gallon gas. Sometimes it can't be avoided.

My Zipp has been re-treaded and is ready for further action. I'll try this again next Saturday and barring a fatal collision resulting in a 5AM road closure on the NY Thruway (last race) or a puncture (today's race) I'll be hammering with the 35+ kids again
.
Hence my lame attempt at humor and an ill-placed winky smiley. I'll get it in the right place this time:
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Old 07-12-08, 03:26 PM
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Originally Posted by San Rensho View Post
Yikes, probably pretty squirrelly in the corners too.
No corners in Prospect Park. A bit of a screaming 35mph+ mini descent however.
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Old 07-12-08, 03:27 PM
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Those smiley face icons are hereby banned from Pcad threads. Make a note of it.
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Old 07-12-08, 03:53 PM
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Old 07-12-08, 03:54 PM
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Originally Posted by rizz View Post
If we're going to talk metric, it's Pa or bar, isn't it? I can never remember which.

Race on!
Metric it's bar. SI it's Pa.
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Old 07-12-08, 04:38 PM
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Originally Posted by patentcad View Post
You know what I'm talking about. Don't piss me off or I'll start posting in Celsius and Metric.
Be absolute and post in Kelvin.

http://www.zapatopi.net/kelvin/



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Old 07-12-08, 04:41 PM
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Originally Posted by ericcox View Post
Paradoxically, Road Nazis abhor authority.
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Old 07-12-08, 05:43 PM
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Originally Posted by El Diablo Rojo View Post
Its psi not lbs when talking pressure.
psi == Pounds per Square Inch
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Old 07-12-08, 06:55 PM
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Nobody's answering me. Does it slow you down much to have 50lbs in your rear tire instead of 150? Wouldn't that absorb a few watts @ 30mph?

I mean, come on fellas, talk me down off the Velo Ledge here.

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Old 07-12-08, 07:12 PM
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I wouldn't mind seeing a jump...
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