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Singlespeed & Fixed Gear "I still feel that variable gears are only for people over forty-five. Isn't it better to triumph by the strength of your muscles than by the artifice of a derailer? We are getting soft...As for me, give me a fixed gear!"-- Henri Desgrange (31 January 1865 - 16 August 1940)

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Old 09-01-06, 08:26 PM   #1
PIZZ
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Pista Downtube.... does this look right?????????

I just purchased a Bianchi Pista 06 used. After I bought it I noticed that the downtube seems to have some tapering to it. It starts out round like a regular tube shape then its tapers in and turn more ovel shaped at the Bicnchi logo and back to the cilinder shape near the bottom bracket. Is this normal or not? I'm hoping i didnt get a crashed frame... it looks straight though
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Old 09-01-06, 08:36 PM   #2
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it's normal.
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Old 09-01-06, 08:37 PM   #3
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Quote:
Originally Posted by PIZZ
I just purchased a Bianchi Pista 06 used. After I bought it I noticed that the downtube seems to have some tapering to it. It starts out round like a regular tube shape then its tapers in and turn more ovel shaped at the Bicnchi logo and back to the cilinder shape near the bottom bracket. Is this normal or not? I'm hoping i didnt get a crashed frame... it looks straight though
Post a picture and you will have a better chance of finding out. From what you described it sounds like tapered tubing which is factory *****.
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Old 09-01-06, 10:33 PM   #4
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Normal
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Old 09-02-06, 03:55 PM   #5
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or some knucklehead put the squeeze on w/ a bike stand.
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Old 09-02-06, 04:26 PM   #6
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^ no, that does not happen. All bike mechanics are pros
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Old 09-02-06, 04:28 PM   #7
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who would clamp a bike by the downtube right at the bottom bracket?

The frame should have an oval shape at the BB and change shape to however Bianchi shapes it.
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Old 09-02-06, 07:37 PM   #8
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totally normal. I didn't notice it until I removed the decals. I figure the aero shape shaves a few seconds off my liquor store runs.
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Old 09-02-06, 08:25 PM   #9
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Quote:
Originally Posted by Falkon
who would clamp a bike by the downtube right at the bottom bracket?

The frame should have an oval shape at the BB and change shape to however Bianchi shapes it.

Ya i'm realizing it looks like it's shaped that way at the company. i thought it maybe could have been clamped too
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Old 09-02-06, 10:45 PM   #10
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totally normal. I didn't notice it until I removed the decals. I figure the aero shape shaves a few seconds off my liquor store runs.
I think you made me have to make a run the "sto"

My goal is to ride and drink beer, just ran out of beer.
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Old 09-03-06, 07:14 PM   #11
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lots a cheap frames are made that way, my rush is like that.
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Old 09-03-06, 08:39 PM   #12
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it's called biovalized tubing. oval vertically at the headube junction, horizontally at the bb. or just round at the top, ovalized at the bottom. it's done for increased lateral stiffness where you need it, and the cheapest frames use straight-gauge tubing, round and the same thickness all the way—so it's not a "cheap frame" thing.
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Old 09-03-06, 09:03 PM   #13
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lots a cheap frames are made that way, my rush is like that.
more mind roofies from teh internets
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