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changing to new saddle--set up question(6 posts)

changing to new saddle--set up questionblw
Dec 21, 2003 10:39 PM
I'm changing to a different saddle. Any suggestions to make sure my fit doesn't change? Should it change with a new saddle? Or should I just put it on in about the same place and ride? I'm changing from a Flite to the Fizik Aliante.
re: changing to new saddle--set up questionHigh Gear
Dec 22, 2003 12:17 AM
I changed from the san Marco Squadra to the Aliante and there was a difference where they both aligned on the rails to the post clamp. Start off taking a measurement from the say the stem bolt to the saddle tip and another from the center of the bottom bracket to the saddle top. Try to match the Aliante up with those measurements. You may still have to fine tune adjustments. Some saddles flex more causing the rider to move the saddle up 2-3 mm. Saddle tilt is another thing too. I always set up my saddles with the top flat using a three foot level. I feel more comfortable with the tip of the Aliante up a little, it keeps me from sliding forward. The best thing to do is get out on a flat,low traffic road with the proper wrenches make little adjustments until everything feels right.
the best way...C-40
Dec 22, 2003 5:05 AM
Measure saddle height from the center of the bottom bracket to the top of the saddle, along the seatpost to get a rough saddle height. Fine tuning will still be required based on feel.

I would carefully check your knee over pedal (KOP) position to see if you are sitting in the same position relative to the bottom bracket. The KOP position should be checked before the new saddle is mounted, then again with the new saddle. KOP is not easy to measure accurately. You should place the bike on an indoor trainer in a level position and ride for 5-10 minutes to be sure that you're fully back in the saddle before having a helper drop a plumb bob from the knee, with the cranks in the 3 o'clock position. Trying to do this without a helper is difficult. It's easy to shift position and get a false reading by yourself.

Saddle tip to handlebar measurements may be of some value, but only if the two saddles are very similar in length and width.
the best way...lyleseven
Dec 22, 2003 6:41 AM
Make sure before you remove the old saddle to also measure from the very front tip of the saddle to the stem and start off by placing the new saddle at the same distance from the stem. If the new saddle is shorter than the old saddle, measure this distance from the rear of the saddle.
Measuring positionCalvin Jones-Park Tool
Dec 22, 2003 9:50 AM
It is always good to measure before making changes. You do not always sit in the same place on different saddles, but you've got to start some place. Trial and error is useful here, but keep track of things as you go.

See also for positioning measuring:
That's a great link. Thanks (nm)Psalm 147-10_11
Dec 22, 2003 11:24 AM