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-   -   Factors that affect saddle tilt? (https://www.bikeforums.net/classic-vintage/943279-factors-affect-saddle-tilt.html)

DOS 04-17-14 08:00 AM

Saddle tilt update
 
2 Attachment(s)
After watching the selle anatomica video and reflecting on various posts on this thread, I lowered my saddle a bit and raised the handlebars just a hair to see whether that made a difference. I think part of the sensation of being tilted toward front of bike stemmed from having saddle too high relative to the bars combined with steeper ST angle than I have on other bikes with comparable handlebar to seat drop (my more modern road bikes have about 3 inch drop). So I was compensating with saddle angle. Bringing bars and saddle closer in height -- going from 2.5 inch drop to more like 1.5 -- has brought saddle closer to level. I haven't gone on long ride yet so we'll see, but on short ride up the road, I felt balanced rather than pitched over the bars. Having brought handlebars up after my last saddle adjustment may mean I can bring saddle nose down a bit more. Pics provide comparison.

rootboy 04-17-14 08:19 AM

Just my opinion, of course, but looks much better now, DOS. Another factor to consider with a higher nose is undue pressure on the fromunder and those tender parts where you don't want it. It can cause problems over time, for some riders. Saddle looks great now, me thinks.

crank_addict 04-17-14 09:27 AM

DOS- You're definitely on the right track especially comparing current generation bike posturing vs. that Paramount. By no means am I an expert but just went thru the same scenario for a recent build. As a base line, I incorrectly followed my numbers from a late bike.

I had a near identical seat post as yours but was the Zeus version. As cool as they are, you've got to find a saddle with the proper rail pitch to match. But since you already have a new saddle of preference, I might suggest finding a different post having micro-tilt adjustment. (An early Campy aero type work well.) Maybe just for trial, set your current post aside but try any brand having a good range of tilt.

And of course you've got all the other stuff to consider, drop line and proper leg extension / rotation for height, comp for crank length, etc.. Fore / aft is done with the stem length. Finalize with bar elevation as your doing. Play around with the bar tilt too while on the drops. Might suggest tilting them further downward.

Get that fine hide zeroed in and you'll have a dream ride. The weight of the Brooks be damned, its the difference of doing a century and deciding on going for more.

BTW: Found this UCI saddle rule — requires seats to be no more than three degrees off horizontal.

DOS 04-17-14 03:24 PM


Originally Posted by crank_addict (Post 16679235)
DOS- You're definitely on the right track especially comparing current generation bike posturing vs. that Paramount. By no means am I an expert but just went thru the same scenario for a recent build. As a base line, I incorrectly followed my numbers from a late bike.

I had a near identical seat post as yours but was the Zeus version. As cool as they are, you've got to find a saddle with the proper rail pitch to match. But since you already have a new saddle of preference, I might suggest finding a different post having micro-tilt adjustment. (An early Campy aero type work well.) Maybe just for trial, set your current post aside but try any brand having a good range of tilt.

I am trying to hang on to the post because it is cool and good looking. But the clamp is a pain to work with to make adjustments and I could probably use just a bit more setback. But so far every post I have found with more setback is just ugly; but I am keeping my eye out for alternatives and am open to recs.

MileHighMark 04-17-14 03:35 PM

Tensioned-leather saddles (such as the one on the OP's bike) often lack the "friction" needed to keep one's butt in place. As such, it's not uncommon to angle/tilt the nose up. All but one of my bikes have (leather) Selle Anatomica saddles, and the saddles are all positioned with the nose angled up.

repechage 04-17-14 03:48 PM


Originally Posted by DOS (Post 16680416)
I am trying to hang on to the post because it is cool and good looking. But the clamp is a pain to work with to make adjustments and I could probably use just a bit more setback. But so far every post I have found with more setback is just ugly; but I am keeping my eye out for alternatives and am open to recs.

What is the seat tube angle? I find it interesting that a Brooks Pro and a Campagnolo seat post don't give enough setback. Campagnolo seat posts are well known for being a challenge to set up. One final note, do you have the lower cradle yokes set with the inboard relief facing forward?

DOS 04-17-14 04:12 PM


Originally Posted by repechage (Post 16680478)
What is the seat tube angle? I find it interesting that a Brooks Pro and a Campagnolo seat post don't give enough setback. Campagnolo seat posts are well known for being a challenge to set up. One final note, do you have the lower cradle yokes set with the inboard relief facing forward?

ST is 74degrees on a 61cm frame. But 57.5 top tube length is same as my modern 58cm Cannondale with 73 degree ST. Campy seatpost has 25mm setback and Brooks pro has very limited fore/aft adjustability (less than a cm either way when clamp is centered on rails, maybe 1.5 cm total if saddle is all the way forward or back).

edited to add: Yes, inboard relief faces forward.

crank_addict 04-17-14 06:11 PM

DOS- The post you have is a study alright. Pure C&V gold. Nine parts to it and a PITA to set-up...LOL.

All kidding aside, I'd keep it but I've found a good alternative to be the Campy Xenon aero post. Far lighter, attractive, simple and gives enough tilt range. Prices are reasonable too.


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