Where can I get a seat angel from. Don't think I've ever seen one but sounds like something I need.

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"Language most shows a man: Speak, that I may see thee. It springs out of the most retired and inmost parts of us, and is the image of the parents of it, the mind. No glass so mirrors a man's form or likeness so true as his speech." - Ben Jonson, Timber, or Discoveries made upon Men and Matter.

hey...sorry for my spelling isnt correct..but english isnt my 1st language.

om du vill kan jag alltid skriva på mitt modersmål om du skulle ha lättare att förstå min fråga då.

Measure to the center of the parallel portion of the seat rails. This will gove you a very close approximation (as the position will change when you sit on it).

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Some are born to move the world to live their fantasies...

https://triomultisport.com/
http://www.mjolnircycles.com/

Classic. Perhaps you should check your own grammar and punctuation before ridiculing someone else for theirs.

For example: "Where can I get a seat angel [sic] from." is missing a question mark.

However, perhaps English is not your first language as well.

The center of the parallel portion of the seat rails is a good start. I would also take into consideration where you sit on the saddle. If you are sitting on the nose of the saddle most of the time you are effectively steepening the geometry, so I'd measure a bit more forward of center on the saddle.

Seat angle is a meaningless number. It is used in an attempt to categorize whether your frame is an “aggressive” TT frame or is more similar to a typical road frame. Athletes should be more concerned with hip angle and pelvic rotation as it relates to their own physical limitations and their ability to produce power, be efficient and maintain an aero position while not limiting their ability to breathe and take in nutrients.



Seat tube angle only takes you part of the way to your contact point on the saddle. You need to know seat post type; set back, forward or no set back. Where the saddle is adjusted on the rails, fore or aft of the center line. And where you actually sit on the saddle.

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[font "Arial"][size 3]Seat tube angle only takes you part of the way to your contact point on the saddle. You need to know seat post type; set back, forward or no set back. Where the saddle is adjusted on the rails, fore or aft of the center line. And where you actually sit on the saddle. [/size][/font][/reply]

Paul -- he said he rides a Softride. All that stuff about seat post is irrelevant.

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Some are born to move the world to live their fantasies...

https://triomultisport.com/
http://www.mjolnircycles.com/

Hi Paul. Its good to see such a well respected bike guru on this forum. Hope you'll stick around to express some of your views here. I was reading in one of the TRI Magazines that you took the fist indoctrination class (just kidding) in SD.

I liked ajfranks formula that allows you to calculate your actual seat tube angle [if you really need to know] which he posted a few month ago::



"Measure the horizontal offset from the tip of your saddle to the center of the bottom bracket. Make this a positive number if the tip is behind the BB, and a negative number if the tip is in front of the BB. Add one half of the length of the saddle (about 14 cm) to this number. Divide that sum by the saddle height measured from the center of the BB to the top of the saddle in the middle. This will give you a number like, say, .17.

Take this number to your favorite table of trig functions. Find the angle whose cosine is closest to that number. That angle is your seat angle."

You can find trig tables here: http://www.industrialpress.com/trig.htm

Good luck,
Art Franke