Seat post vs stando...
 

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[Closed] Seat post vs standover height ?!

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Merry Christmas all,

Could someone please tell me if a difference of 13cm in standover height between two different frames would mean an extra 13cm seat post showing ??

Thanks


 
Posted : 25/12/2011 11:53 am
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I'd say no, as the length of the tubes on the different sizes of frame wouldn't be directly proportional.


 
Posted : 25/12/2011 12:06 pm
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No, because standover height is a function of bottom bracket height, seat tube length and angle, and top tube drop. Seatpost extension is a function of crank length and seat tube length.


 
Posted : 25/12/2011 12:09 pm
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Phew ! Thanks. Missus currently has a 16" kona kula and it's a tad too long but there is plenty of seat post showing.

We have gone for a 14" long orange five diva but standover is alot lower.


 
Posted : 25/12/2011 12:15 pm
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That's a big difference in standover, I would think that's about the difference between my mtb and road bike.


 
Posted : 25/12/2011 12:15 pm
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There is some guff up there. Standover height is a function of the height of the top tube above the ground at about where someone standing over the bike would be. Nothing else.

Depending on whether the seat tube goes above the top tube will depend on whether there is any more seat post showing. I'd still look at how far above where the top tube meets the seat tube as a critical measurement as on most the seat post needs to go beyond that join fo safety.

It might make a difference. You need to add up the length of the crank and the seat tube on each to see how much seatpost you need for the lady - not the difference between standovers.


 
Posted : 25/12/2011 12:57 pm
 mrmo
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depends on so many things.

[img] [/img]

note how the top tube drops and the seat tube is braced, you get slightly less seat post showing and a bit more standover clearance.

Going the other way and i know it is a road bike, but makes the point.

[img] [/img]

Quite a short seat post for the size.

Once upon a time bike sizes actually meant something, not now.


 
Posted : 25/12/2011 1:27 pm
 br
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Did you mean cm or mm?


 
Posted : 25/12/2011 2:24 pm
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Definately cm...


 
Posted : 25/12/2011 2:59 pm

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