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Should I add extra bottle mounts?

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Should I add extra bottle mounts?

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Old 01-30-11 | 07:14 PM
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hillzofvalp
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Should I add extra bottle mounts?
Can I add my own water bottle mounts to an cannondale cad3 frame? I'm looking to support a load of around 15 pounds between the 4 existing mounts, but am unsure if it would stress the frame at all..
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Old 01-30-11 | 07:20 PM
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From: Collegeville, PA

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15lbs is way too much for a rivnut in thin aluminum IMO
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Old 01-30-11 | 07:32 PM
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hillzofvalp
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15/4 pounds too?
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Old 01-30-11 | 07:44 PM
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A large waterbottle weighs 28oz and is supported by 2 bottle bosses. A single boss supporting 60oz is probably pushing it; the result, a ripped out rivnut, would undoubtedly include distortion and fatigue of a pretty thin tube.

Let me put it to you this way: I sure wouldn't ride it. A steel frame made from 9.6.9 tubing could probably handle it.
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Old 01-31-11 | 01:49 AM
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hillzofvalp
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I think I will skip going into the frame and instead build a pack around the frame with straps and clamps in lots of places. My bianchi tsx is like... 7.5.7
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Old 01-31-11 | 06:08 AM
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What is it that you're trying to carry?
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Old 02-01-11 | 12:13 AM
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hillzofvalp
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Battery pack. It would rest in lower corner and occupy about 1/4 of area between all the tubes.
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