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Technical & Reference Section => Tech and Restoration => Topic started by: dinglem on October 29, 2014, 09:41 AM

Title: UNI Hammerhead seatpost change
Post by: dinglem on October 29, 2014, 09:41 AM

How easy/difficult is this and has anybody already done it??

Title: Re: UNI Hammerhead seatpost change
Post by: 58 delray on October 29, 2014, 11:10 AM

first question is why would you want to ?

Title: Re: UNI Hammerhead seatpost change
Post by: dinglem on October 29, 2014, 12:05 PM

I have a nice seat with a ropey looking seat post, but I also have a pair of NOS UNI seat posts, one of which is the graphite version in black and the other is a red Uni-glass version. Just considering changing out the seat posts really and wondering if it is possible.

Title: Re: UNI Hammerhead seatpost change
Post by: dinglem on October 29, 2014, 12:18 PM

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Title: Re: UNI Hammerhead seatpost change
Post by: dinglem on October 29, 2014, 12:37 PM

And another....

Title: Re: UNI Hammerhead seatpost change
Post by: 58 delray on October 29, 2014, 01:18 PM

are they not a different size to the one on the seat ?

Title: Re: UNI Hammerhead seatpost change
Post by: dinglem on October 29, 2014, 01:33 PM

Dunno - still waiting for the seat to be delivered.... Are they a different size then?? If so then I guess that answers my question!?

Title: Re: UNI Hammerhead seatpost change
Post by: Jaan on October 29, 2014, 02:06 PM

Quote from: dinglem on October 29, 2014, 01:33 PM

Dunno - still waiting for the seat to be delivered.... Are they a different size then?? If so then I guess that answers my question!?

The integrated UNI seat posts are narrower 13/16 or 21mm and require a shim, i've a feeling the standalone seat posts are regular size 22.2 so won't fit the seat.

UNIs without a shim are perfect for loopy Rippers.

Title: Re: UNI Hammerhead seatpost change
Post by: 58 delray on October 29, 2014, 02:08 PM

normal size for a hammer head seat post is 13/16ths, not sure about the posts you have but they may be 7/8ths ?

Title: Re: UNI Hammerhead seatpost change
Post by: DY85262 on October 30, 2014, 10:00 PM

Just to confuse you even more, my Pro-14 Hammerhead is 7/8. Shimless!

I remember I had the same BITD and I cracked the bond between the seat and post. My mate worked in a coblers so I took it in and he glued it with some magic elf glue. Seemed to work from memory.

Title: Re: UNI Hammerhead seatpost change
Post by: MartyC on November 01, 2014, 03:51 AM

Quote from: DY85262 on October 30, 2014, 10:00 PM

Just to confuse you even more, my Pro-14 Hammerhead is 7/8. Shimless!

I remember I had the same BITD and I cracked the bond between the seat and post. My mate worked in a coblers so I took it in and he glued it with some magic elf glue. Seemed to work from memory.

Coblers  :LolLolLolLol:  Sorry  :-[

Title: Re: UNI Hammerhead seatpost change
Post by: animal on November 01, 2014, 07:15 PM

Yep its all possible fella .