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PostPosted: Thu Jun 14, 2007 11:14 am 
Retro Guru
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Joined: Wed Jul 06, 2005 12:49 pm
Posts: 475
Location: Cairns, Australia
scant wrote:
I always wondered about these, as the seatpost isnt able to drop any lower than the top tube due to the shock, does the extended seattube flex much? later models obviously have a reinforcing tube from the extended seattube to the top tube.


It wasn't the later ones that had the extra bracing, it depended on the material. Steel frames don't have it, but the aluminium and Ti frames do.

And yes the steel frames are heavy they are made from 4130. My old Intrepid frame was over 7lb. and was dubbed he "Black Anchor" because of its' weight. When we had to get it on the car roof mounted bike carrier, it was almost a 2 person job!


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PostPosted: Thu Jun 14, 2007 1:01 pm 
Old School Grand Master

Joined: Wed Jun 29, 2005 11:18 am
Posts: 15804
Location: near cwmcarn
LQQK wrote:
scant wrote:
I always wondered about these, as the seatpost isnt able to drop any lower than the top tube due to the shock, does the extended seattube flex much? later models obviously have a reinforcing tube from the extended seattube to the top tube.


It wasn't the later ones that had the extra bracing, it depended on the material. Steel frames don't have it, but the aluminium and Ti frames do.

And yes the steel frames are heavy they are made from 4130. My old Intrepid frame was over 7lb. and was dubbed he "Black Anchor" because of its' weight. When we had to get it on the car roof mounted bike carrier, it was almost a 2 person job!


so does the seattube flex much without the brace? 7lb isnt too bad. early 90s yeti fros & ultimates were 6lb fully rigid!


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PostPosted: Thu Jun 14, 2007 2:23 pm 
Old School Grand Master
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Joined: Tue Jul 05, 2005 3:14 pm
Posts: 13402
Location: Warwick
Still got mine for sale.

I aint got any bits to build it :(


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PostPosted: Fri Jun 15, 2007 11:27 am 
Retro Guru
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Location: Cairns, Australia
[/quote]so does the seattube flex much without the brace? 7lb isnt too bad. early 90s yeti fros & ultimates were 6lb fully rigid![/quote]

I never noticed any flex, and no one I rode with commented that they could see the seat tube flex.


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PostPosted: Fri Jun 15, 2007 12:38 pm 
retrobike rider
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Joined: Wed Jan 04, 2006 10:12 pm
Posts: 2993
Location: Northumberland
I never thought about this whole flex thing til Scant mentioned it, then :shock: Thoughts of snapping go through my mind


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PostPosted: Fri Jun 22, 2007 6:44 pm 
retrobike rider / Gold Trader
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Joined: Tue Nov 14, 2006 2:27 pm
Posts: 2728
Location: In the Woods. . .
I loved my boulder, and I found that it worked and matched a manitou just fine. If the rear end is a bit stiff, you can wind the perload back, or go with thinner oil. It makes a heck ofa difference as the shock is acted upon directly, with no linkage. I ran solkolene 5w in the end.
They aren't the lightest, but well engineered and durable. I had mne fo years. And although it looks like an engineering phallicy, the seat tube definately doesn't flex.
Ad jez says in his ad he's reduced his, for a quick sale- whats he asking. . ?


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