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why are folding bike head tubes not longer in general

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why are folding bike head tubes not longer in general

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Old 01-18-19, 05:53 AM
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timo888
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why are folding bike head tubes not longer in general

I look at how very long the steering tube to the handlebars is above the head tube on most folding bikes, and wonder why the head tubes are not made longer. Wouldn't flex be reduced if the head tubes were longer and the steering tube was shorter? Is it only the height dimension of the folded package that drives this aspect of the design? Or is it safer to have as short a head tube as possible, to minimize stresses on the head-tube/top-tube weld?
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Old 01-18-19, 07:23 AM
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I suspect if you did what you said the bike would not fold as well or as small. My opinion anyway. Roger
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Old 01-18-19, 08:07 AM
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If the headtube is longer, the overall height when folded would be higher. Given that transit companies limit folded dimensions for carry-on bikes, and packing in a suitcase would be more difficult (or impossible) it is best to keep the headtube short.
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Old 01-18-19, 01:34 PM
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It seems to me that at least on some bikes there are a couple of inches of leeway available because the saddle adds height.
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