Saddle with most adjustment on the rails

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la85
Posts: 133
Joined: Fri Apr 17, 2020 10:13 am

by la85

Hey everyone,

Anyone have a saddle which has extra long rails towards the front of the saddle which allows you to mount the seatpost further foward?

Im struggling to get some setback on my mtb.

The Fabric saddles I have can mount approx 120mm from tip of saddle to front of seatpost mounting bracket on the rail.

Any input would be great.

Cheers

by Weenie


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santanacorreia
Posts: 15
Joined: Sat Jun 20, 2020 2:47 pm

by santanacorreia

Just turn the seatpost the other way around.

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la85
Posts: 133
Joined: Fri Apr 17, 2020 10:13 am

by la85

santanacorreia wrote:
Mon Aug 16, 2021 11:45 pm
Just turn the seatpost the other way around.

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Yep that's not going to work. Thanks anyway

santanacorreia
Posts: 15
Joined: Sat Jun 20, 2020 2:47 pm

by santanacorreia

Hope it could help.

Is the frame too large?

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02GF74
Posts: 724
Joined: Thu Jan 13, 2011 4:04 pm
Location: Sunny UK

by 02GF74

Obviously you have a seat post with zero offset. If you have to fit a saddle so it ison the limit at the rear, then top tube is too long ie bike is too big, fitting a shorter stem will reduce the length of the cockpit but ultimately you are compromising your riding position.
, and/or handling.

Hexsense
Posts: 3270
Joined: Wed Dec 30, 2015 12:41 am
Location: USA

by Hexsense

To sit more forward on top of the bb: Pro Aerofuel saddle.
Yes, it's a TT saddle. But it work perfectly on my road, commuter, gravel and mtb bikes.

To sit more rearward on top of the rear wheel: SMP blaster or other SMP saddles. Almost all SMP have very long rails and designed to sit at the very back part of the saddle.

MTB setback can be head-ache. Old bikes had slack STA (~73 degree). New modern bikes go very aggressive with STA around 75-77 degree. Usually, steep STA modern bike pair with longer reach. So it somewhat counteract each other. But still, if you really want to convert between modern geometry and old geometry set-back, the 25mm setback seatpost is not enough to compensate for 2degree+ difference in seat tube angle.

OP: How do you determine that you need more set-back?
In general, more set-back in mtb doesn't have much importance. People generally don't set up saddle in an optimal position for pedaling on MTB anyway unless they have dropper post. The thing is MTB is too dynamic to just sit relax and pedal. Optimal pedaling efficiency seat height and set back sucks for technical climbing control. So people'd set up the seat a bit lower for control and more forward for weight distribution on climb than optimal on rigid seatpost. Then when things get gnarly, people stand in attack position nealy half of the time so saddle position doesn't matter.
Modern MTB will fit you on top of the bb with barely any set-back. It's just how the bike intended to operate these days. It works on TT, and it works on MTB.
On my bikes, only disclipline that use a lot of set-back position are road and gravel.

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alistaird
Posts: 279
Joined: Thu Jul 21, 2016 8:21 pm

by alistaird

You could try a monolink saddle and seatpost?

A

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flying
Posts: 2861
Joined: Mon Dec 19, 2005 9:16 am

by flying

02GF74 wrote:
Tue Aug 17, 2021 12:57 pm
Obviously you have a seat post with zero offset. If you have to fit a saddle so it ison the limit at the rear, then top tube is too long ie bike is too big, fitting a shorter stem will reduce the length of the cockpit but ultimately you are compromising your riding position.
, and/or handling.
I think you read his post wrong
He wants to move his saddle further back to get more setback

Secondly setback is nothing to do with reach TT length etc

Setback is how far the nose of your saddle is behind your BB
It is only a function of where you sit in relation to your BB

Many folks think you fix that with stem or TT length ...you do not
All you have is seatpost setback & seat tube angle to affect your setback

OP all you can do is find a post with as much setback as you can find
The saddles are all quite close in range but what you need to watch is the seat clamp
Some extreme setback posts like FSA SB32 in reality is no better than a standard 20 setback because it has such a long clamp

Other than that if you still need more setback you need a frame with a more slack seat tube angle

All that aside most are concerned with setback on road but MTB not so much as hexsense said

by Weenie


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