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Carbon Bikes Only - Page 2

post #31 of 54
Quote:
Originally Posted by jstraw
Light wheels help *everyone*!
I remember a long, involved thread on MTBR last summer regarding the rotating weight of wheels. The conclusion that I drew from it, is that the additional weight of heavier wheels vs lighter wheels was only the true weight difference. The rotation factor was so minimal, and only appeared during hard acceleration, that it didn't seem to have the affect that all the old wives tales would have you believe and didn't justify the cost of lightweight wheels. And since the discussion took place on a mountain biking forum, it also occurred to me that at the bottom of a short steep hill, the momentum of a heavier wheel actually offered some (allbeit very minor) advantage from their spinning momentum to get you up the hill.
post #32 of 54
Quote:
Originally Posted by JohnH
The conclusion that I drew from it, is that the additional weight of heavier wheels vs lighter wheels was only the true weight difference. The rotation factor was so minimal, and only appeared during hard acceleration, that it didn't seem to have the affect that all the old wives tales would have you believe and didn't justify the cost of lightweight wheels.
http://www.biketechreview.com/archive/wheel_theory.htm

Quote:
Roughly, the average rider power requirements on a course with a zero net elevation gain is broken down into 60% rider drag, 8% wheel drag, 8% frame drag, 12% rolling resistance .5% wheel inertia forces and 8% bike/rider inertia. The uphill TT example given is a special case where the rider aerodynamics and the bike/rider weight have nearly equal contributions to power – somewhere around 35% each with wheel mass contributing around 1%. The steeper the hill, the more important mass becomes and the less important aerodynamics becomes. In all cases, however, there is approximately 3% of the average power unaccounted for.
post #33 of 54
JohnH, well my sponsor (Mrs. HarkinBanks) wouldn't like me to reveal the actual cost, but it was inbetween $3-4K.

Here's a pic. With my tools and computer, it comes in at 17.3 lbs.

HB

post #34 of 54
Quote:
Originally Posted by HarkinBanks
JohnH, well my sponsor (Mrs. HarkinBanks) wouldn't like me to reveal the actual cost, but it was inbetween $3-4K.

Here's a pic. With my tools and computer, it comes in at 17.3 lbs.

HB

Those are my favorite road rims, nice.
post #35 of 54
Thread Starter 

here's one for you Phil

Quote:
Originally Posted by Phil Pugliese
I prefer yur bike stand.
post #36 of 54
Considering that my carbon ride was an exersize in extreme frugality and came in at about $2300, I find $3k-$4k for your gorgeous bike very reasonable...
post #37 of 54
Quote:
Originally Posted by jstraw
Considering that my carbon ride was an exersize in extreme frugality and came in at about $2300, I find $3k-$4k for your gorgeous bike very reasonable...
Yeah, but Carbonissimo has a much better bike stand.
post #38 of 54
I think he's crazy, personally...I won't even lean mine against the Passat.
post #39 of 54
$2300 bicycle, extreme frugality, ok, sure! Are you cat1 or pro?

Harkin, you might need a sturdier saddle, the front of your's looks bent.
post #40 of 54
Quote:
Originally Posted by telerod15
$2300 bicycle, extreme frugality, ok, sure! Are you cat1 or pro?

Harkin, you might need a sturdier saddle, the front of your's looks bent.

Ok, you spec out a bike, carbon frame and fork, Campy Chorus...for less.
post #41 of 54
I used to be able to delete wise crack posts like that. I tried to make it go away right after I posted it, but couldn't figure out how.

I'm not an elite racer, so I don't need a carbon bike with Chorus gruppo. Do I want one, am I jealous? Yes and yes. But even if iI bought one at less than half the list price, at $2300, I wouldn't be calling myself "frugal". But I understand what you're saying and I bet it's a sweet ride.
post #42 of 54
Well, it's the least sweet ride posted so far in this topic...but I'm proud of it. In no small part, for what I referred to as frugality. I'll defend finding a quality carbon frame for $600 as frugal, anyday! It's still an extravagance but I'm allowed to treat myself to a few of those.

BTW, I don't find wisecracks bothersome. No harm, no foul.
post #43 of 54
Quote:
Originally Posted by jstraw
Well, it's the least sweet ride posted so far in this topic...but I'm proud of it. In no small part, for what I referred to as frugality. I'll defend finding a quality carbon frame for $600 as frugal, anyday! It's still an extravagance but I'm allowed to treat myself to a few of those.

BTW, I don't find wisecracks bothersome. No harm, no foul.
Where did you find a carbon frame for 600$?Got a link?
post #44 of 54
Quote:
Originally Posted by GarryZ
Where did you find a carbon frame for 600$?Got a link?
Yep...

http://www.pedalforce.com/online/

The current version is the ZX3...from the photos, I'm not sure I like the form as well as my ZX2. Pedal Force is just a company that markets these products. The manufacturing facility is a Taiwanese plant That has produced everything from the Kestral Talon to the Supergo house-branded carbon frames.
post #45 of 54
Found my old post about Pedal Force on cyclingforums.com:

http://www.cyclingforums.com/showpos...&postcount=233
post #46 of 54
Thread Starter 

against the garage door

post #47 of 54
Quote:
Originally Posted by carbonissimo
Was it something we said??
post #48 of 54
I guess Martec is OEM'ing a lot more brands than I realized...

"With a capacity of 60,000 to 70,000 frames a year and 400,000 forks, Martec is responsible for 20 to 25 percent of the world’s carbon fiber frame supply, Koh estimates, putting it on a par with Giant’s factory in Taichung, Taiwan, and Trek’s plant in Wisconsin."

http://www.bicycleretailer.com/bicyc..._id=1002343377
post #49 of 54
Thread Starter 
Quote:
Originally Posted by jstraw
I think he's crazy, personally...I won't even lean mine against the Passat.
Here's where I really keep them jstraw.
I do drive myself crazy deciding which one to ride.
post #50 of 54
What are the tires on the lower left member of your harem?
post #51 of 54
Thread Starter 
post #52 of 54
thanks...

I'd have to find them form another vendor. I had a HORRENDOUS experience with World Class Cycles!
post #53 of 54
Thread Starter 
Sorry to hear that.
They've always taken good care of me. :
post #54 of 54
Wise Cycle Buys carries them too...and I like them.

I bought Tufos form World Class and they had lots of failures around the stem...and I was told flat out they sold stuff with no warranty of any kind. Of course that's not even legal...they have to take defective merchandise back. I challenged the credit card charges and told them they could have everything back if they credited the charges and sent me a call tag. They fought me and lied to my CC company. I won...the charges were reversed...about 6months later, the call tag appeared.
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