Ritchey Flexlogic seatpost torque??

Discuss light weight issues concerning road bikes & parts.
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Biff
Posts: 109
Joined: Mon Jan 11, 2010 6:30 am

by Biff

Hi

I´m about to install a Ritchey carbon Flexlogic seatpost but there is´nt a max torque indicated anywhere??...Other Ritchey carbon posts i´ve used had a 12 NM indicated on the clamp.Nothing on this one :?: .Ritchey website has the usual standard manual that also came with the post but no specific torque for the Flexlogic.I´m assuming it is 12 NM but not sure as i don´t wan´t to wreck it..
Anyone knows??

Thx

tinozee
Posts: 699
Joined: Wed Jun 01, 2011 7:53 am

by tinozee

I would say call Ritchey just in case. I have dealt with them a few times, very nice and easy phone support.

by Weenie


Biff
Posts: 109
Joined: Mon Jan 11, 2010 6:30 am

by Biff

i´m in Europe..
Maybe i should try the local distributor?

Biff
Posts: 109
Joined: Mon Jan 11, 2010 6:30 am

by Biff

Have´nt heard back from anyone yet :-(

Please is there someone here who has this seatpost and how much torque did you use on the clamps??

5 8 5
Posts: 1353
Joined: Sat Jul 29, 2006 2:36 am
Location: UK

by 5 8 5

The Ritchey single bolt side clamps are rated at 12Nm. I'd be very surprised if a twin bolt post was also 12Nm.
BTW what size bolts are they? M5? Side clamps are M6.

5 8 5
Posts: 1353
Joined: Sat Jul 29, 2006 2:36 am
Location: UK

by 5 8 5

5 8 5 wrote:BTW what size bolts are they? M5? Side clamps are M6.


Biff?

BTW saddle rails can have max torque ratings, carbon railed especially, so that has to be taken into account as well.

Biff
Posts: 109
Joined: Mon Jan 11, 2010 6:30 am

by Biff

Hi 585 :-)

Sorry about my late answer.

Bolts are M6.Seatpost is this "Link"-Construction...I will use the standard clamps on it though.Saddle is an SLR with carbon rails.
I did find guidelines for the Monolink adapter but nothing on the standard clamp...Weird

5 8 5
Posts: 1353
Joined: Sat Jul 29, 2006 2:36 am
Location: UK

by 5 8 5

Surprised it's 2x M6! If you don't get official confirmation try 5-8 Nm and see how that holds.
Try forcibly moving the saddle by hand. Ideally also try it on a turbo first.

You could also put some carbon paste between the post and the clamp

Biff
Posts: 109
Joined: Mon Jan 11, 2010 6:30 am

by Biff

I´ll try that.Thanks

I have mailed the distributor,Ritchey and the shop i bought it from but have´nt got any replies.... :(

Biff
Posts: 109
Joined: Mon Jan 11, 2010 6:30 am

by Biff

I got a response from Ritchey International so i thought i would post their response in case it could be useful info:

"Dear Mr. Larsen,

the max torque allowed is 15Nm.
Please, also check with the saddles producer if the saddle rails can accept this torque.

We strongly suggest to use Ritchey Liquid Torque (or similar products) in order to increase the friction between parts even with a lower torque."


..So 15 Nm is quite a lot!.I used around 7-8 Nm which have been adequate so far.This is for the "Standard" rail clamp and not the adapter for Monolink saddles.

AJS914
Posts: 1747
Joined: Tue Jan 28, 2014 6:52 pm

by AJS914

I installed a Ritchey Flexlogic seatpost today. I give it a thumbs up.

I wasn't particularly looking for a comfort seatpost but the Reynolds Ouzo Pro on my Parlee was driving me crazy. It always has made clunking noises. On the Reynolds it's hard to get both bolts evenly tight without affecting the tilt of the saddle. I stumbled across the Flexlogic and decided to try it.

The clamping mechanism is great. It's super easy to tighten and get the saddle correct without any slippage.

As far as comfort goes, I wouldn't buy this seatpost for that reason unless you have a lot of post showing. I can feel a tiny improvement in comfort but it's less than the difference between 23mm and 25mm tires. Maybe it would be more noticeable on a mountain bike or a bike showing lots of post.

This someone else's photo but the post and clamp look like this:

Image

This is how much post I have showing on my Parlee Z4. The most of all my bikes but it seems like this post would shine on a mountain bike.

Image

by Weenie


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