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  1. #1
    Ty
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    New question here. How to measure a seat post

    Hi Bike Bulimics,

    what is the way to determine the length of a seat post ?

    Is is from the centre of the saddle rails to the bottom of the seat post ?


    Also how much (or how little) seat post is it wise to leave in the frame

    If it makes any difference it will be a USE Carbon post in a Klein Adroit (hardtail) frame (31.6mm)

    cheers for any info
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  2. #2
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    correct...

    Quote Originally Posted by Ty
    Hi Bike Bulimics,

    what is the way to determine the length of a seat post ?

    Is is from the centre of the saddle rails to the bottom of the seat post ?


    Also how much (or how little) seat post is it wise to leave in the frame

    If it makes any difference it will be a USE Carbon post in a Klein Adroit (hardtail) frame (31.6mm)

    cheers for any info
    lenght of a seatpost is measured from the bottom of the tube to the middle of the seatrails.

    you usually should have about 2.5-3 times the width of the seatpost diameter inserted:
    on a 31.6mm post that's ca. 75mm minimum.

  3. #3
    Max
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    seat post adapters should at least measure 3 inches (75 mm), as Nino said. Carbon seat posts should preferably be used with an adapter.

    depending on your seatpost length, some frame builders also say it's enough to insert the post right beneath the tub tube. anyway, the longer the better


    Skinny guys fight 'til they're burger

  4. #4
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    just to make sure..

    thomson advices to leave at least 10cm of seatpost inside your frame.
    hey
    ho
    lets go!

  5. #5
    Boj
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    Quote Originally Posted by ?Ty?
    Hi Bike Bulimics,

    what is the way to determine the length of a seat post ?

    Is is from the centre of the saddle rails to the bottom of the seat post ?


    Also how much (or how little) seat post is it wise to leave in the frame

    If it makes any difference it will be a USE Carbon post in a Klein Adroit (hardtail) frame (31.6mm)

    cheers for any info
    Dude, what brakes are those? They look light.
    If in doubt - pedal harder!!!

  6. #6
    Ty
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    Quote Originally Posted by Max
    seat post adapters should at least measure 3 inches (75 mm), as Nino said. Carbon seat posts should preferably be used with an adapter.

    depending on your seatpost length, some frame builders also say it's enough to insert the post right beneath the tub tube. anyway, the longer the better
    My frame takes a 31.6mm post diameter (Klein)

    USE make a carbon USE Alien in 350mm / 31.6mm so I was hoping to use this
    (they do not make a 400mm in carbon )

    That would mean I would use it without a shim (adapter), is this ok?

    I would have 85mm inside the frame, from the top of the seat clamp to the base of the seat post, with only 20mm below the base of the top tube.

    I only ride this bike on the road (no off road stuff, just the occasional bunny hop over a pot hole in the road), also I am not a big heavy fella'.

    Do you think I will be ok with the USE Carbon post or should I go for a the USE Aluminium (400mm / 31.6mm) ?

    I would prefer the Carbon!

    Cheers for all your input

    Ty
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  7. #7
    Ty
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    My frame takes a 31.6mm post diameter (Klein)

    USE make a carbon USE Alien in 350mm / 31.6mm so I was hoping to use this
    (they do not make a 400mm in carbon )

    That would mean I would use it without a shim (adapter), is this ok?

    I would have 85mm inside the frame, from the top of the seat clamp to the base of the seat post, with only 20mm below the base of the top tube.

    I only ride this bike on the road (no off road stuff, just the occasional bunny hop over a pot hole in the road), also I am not a big heavy fella'.

    Do you think I will be ok with the USE Carbon post or should I go for a the USE Aluminium (400mm / 31.6mm) ?

    I would prefer the Carbon!

    Cheers for all your input

    Ty
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  8. #8
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    remember USE advice you should use the shim with the carbon post, so, you should get a smaller size and use the shim to 31.6. anyway, i would get the aluminum version.
    hey
    ho
    lets go!

  9. #9
    Ty
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    Quote Originally Posted by carlos
    remember USE advice you should use the shim with the carbon post, so, you should get a smaller size and use the shim to 31.6. anyway, i would get the aluminum version.
    Thanks Carlos, yeah I was thinking about this too but I read this.

    This is a quote from www.leisurelakesbikes.com.


    The natural carbon weave tube provides incredible strength. USE don't comprimise to save small amounts of weight. This seatpost has the right strength, safety, durability and security to rid all those fears which you have had about carbon posts. The 7075 forged Alien clamp is forged for strength and CNC machined for tolerance. MTB extra thick wall for direct fit without shim.

    what do you think ? to shim or not to shim ??????

  10. #10
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    i would use the shim but to make sure email USE.
    hey
    ho
    lets go!

  11. #11
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    you're ok...

    Quote Originally Posted by �Ty�
    My frame takes a 31.6mm post diameter (Klein)

    USE make a carbon USE Alien in 350mm / 31.6mm so I was hoping to use this
    (they do not make a 400mm in carbon )

    That would mean I would use it without a shim (adapter), is this ok?

    I would have 85mm inside the frame, from the top of the seat clamp to the base of the seat post, with only 20mm below the base of the top tube.

    I only ride this bike on the road (no off road stuff, just the occasional bunny hop over a pot hole in the road), also I am not a big heavy fella'.

    Do you think I will be ok with the USE Carbon post or should I go for a the USE Aluminium (400mm / 31.6mm) ?

    I would prefer the Carbon!

    Cheers for all your input

    Ty
    that's more than enough post inserted. newer USE carbon posts don't need a shim anymore. they are reinforced (and are therefore slightly heavier). the actual 31.6/350 weighs 200g.
    what's the best offer you found for that USE carbon?

  12. #12
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    i think the extralite "standard" will be a much better option.
    hey
    ho
    lets go!

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