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BMX General => BMX Chat => Topic started by: monkeybat on August 07, 2010, 08:34 AM

Title: How is a seatpost measured 22 or 25 ?
Post by: monkeybat on August 07, 2010, 08:34 AM

Is it accross the hole ?

Title: Re: How is a seatpost measured 22 or 25 ?
Post by: firebird on August 07, 2010, 09:26 AM

The post will be 22.2mm
 :daumenhoch:

Title: Re: How is a seatpost measured 22 or 25 ?
Post by: monkeybat on August 07, 2010, 11:12 AM

But why have i seen 25 as well?

Title: Re: How is a seatpost measured 22 or 25 ?
Post by: firebird on August 07, 2010, 11:15 AM

old school frames take a 22.2 that all I know without making a fool of myself  :LolLolLolLol:

Title: Re: How is a seatpost measured 22 or 25 ?
Post by: snav69 on August 07, 2010, 11:20 AM

Quote from: monkeybat on August 07, 2010, 11:12 AM

But why have i seen 25 as well?

Think that's the Burner size  :-\

 :coolsmiley:

Title: Re: How is a seatpost measured 22 or 25 ?
Post by: spesh on August 07, 2010, 11:33 AM

old school is 22.2mm and then the mid school frames went up to 25.4mm
i think mk1 burners were even bigger 27+ mm?

Title: Re: How is a seatpost measured 22 or 25 ?
Post by: monkeybat on August 07, 2010, 11:46 AM

Had to ask as my Mirra flair has a set post but where it gets to the seat it decreases in size and these new micro pivot posts? whats that all about.

Title: Re: How is a seatpost measured 22 or 25 ?
Post by: TwoBobRob on August 07, 2010, 10:50 PM

Basically, there were 2 seat post sizes generally used - 22.2mm and 25.4mm, or 7/8" & 1" in old money. It's the actual size of the seat tube hole, and the post of course. Your Haro I'm guessing had a 25.4 post and ordinary looking seatguts and they were always 22.2mm, so the post narrowed at the top.

Most all new school frames take a 25.4 post these days.

The micro pivotal things are just for kids to slam their seats as low as possible.  Some people don't like the position of the pivotal seats as most have no front/back adjustment, so check into that before you buy one if you're thinking of one.

Title: Re: How is a seatpost measured 22 or 25 ?
Post by: Jon The Bassist on August 08, 2010, 02:33 AM

Yup, some old Haros were 25.4mm  :daumenhoch:

Title: Re: How is a seatpost measured 22 or 25 ?
Post by: monkeybat on August 08, 2010, 09:19 AM

Measured accross the whole and all mine are 25.4, cheers.

Title: Re: How is a seatpost measured 22 or 25 ?
Post by: HARORIDER on August 08, 2010, 09:26 AM

be carefull to check though as there are some odd sizes out there as well like 22.6mm :daumenhoch:

Title: Re: How is a seatpost measured 22 or 25 ?
Post by: spesh on August 09, 2010, 09:15 PM

Quote from: harorider on August 08, 2010, 09:26 AM

be carefull to check though as there are some odd sizes out there as well like 22.6mm :daumenhoch:

my old haro bashguard had a 22.6 post in it :daumenhoch:

Title: Re: How is a seatpost measured 22 or 25 ?
Post by: moochalargo on August 10, 2010, 08:20 PM

Mine field. Glad mine is simple. 22.2