[Thorsteenster]

I've been looking around to buy a frame but wasn't sure what size. Someone the other day posted a link to this Fit Calculator:
http://www.competitivecyclist.com/za/CCY?PAGE=FIT_CALCULATOR_INTRO&INTRO_LINK=NOREDIR
Going by it, I should use the top tube length as the predominant dimension, and the particular frame I'm looking at would be a 17" model. To get the BB to seat dimension the seat post would have roughly 10" of stick out. But at 6'4", a 17" seems to small, and post stick out a little much, whats your height, frame size and post stick out?

This for a 29er frame BTW, which is kind of making me rethink building a 29er.

 

[p nut]

What frame are you looking at that has that long of a top tube on a 17" frame? I'm picturing a huge trials bike.

What's your preferred ETT length?

 

[Thorsteenster]

This one here, a Motobecane.
http://cgi.ebay.com/NEW-29-MOUNTAIN...5584182?pt=Mountain_Bikes&hash=item27b41deb36
Geometry here(scroll down):
http://motobecane.com/29/f29c.html#geo

Looking at a nonbranded 26" frame from Kenisis, I can go to a 20 or 22" frame, either hair over or under from the Fit Calculator.

Sorry, not sure what ETT is....

 

[Thorsteenster]

Wow, 36 views and none know how much stick out they have on their seat post?
:lol:

 

[boomn]

ETT = effective top tube length

Something sounds wrong with the calculator or your measurements if it's suggesting a top tube length of 23.6" for a 6'4" person. Or maybe your body is just strange

As for amount of seatpost sticking out, it can varies wide from frame to frame based on design. 10" sounds like a bit much though.

 

[kapusta]

I've been looking around to buy a frame but wasn't sure what size. Someone the other day posted a link to this Fit Calculator:
http://www.competitivecyclist.com/za/CCY?PAGE=FIT_CALCULATOR_INTRO&INTRO_LINK=NOREDIR
Going by it, I should use the top tube length as the predominant dimension, and the particular frame I'm looking at would be a 17" model. To get the BB to seat dimension the seat post would have roughly 10" of stick out. But at 6'4", a 17" seems to small, and post stick out a little much, whats your height, frame size and post stick out?

This for a 29er frame BTW, which is kind of making me rethink building a 29er.

That calculator is only as good as the numbers you put into it. Make sure you are doing everything EXACTLY the way they say, no shortcuts. I have a very hard time believing that the calculator would put any 6'4" person on a 23.6" ETT bike unless you have some circus-freakishly short arms.

My seat post sticks out anywhere from 6 to 10 inches, depending on the bike. Some people's stick out a lot more. It is a fairly low-priority consideration for me when sizing a bike.

 

[ae111black]

11" here on my trail bike and 9" on my SS I'm 6'4" and ride an XL FS frame and my SS is a 22" frame I have a 34" inseam if it helps.

 

[Betarad]

I'm 6' 4" also, and that's 11" of seat post, pretty much like every bike I've had in the last decade.

 

[Thorsteenster]

Ok, I'll give the measurements another try as I'm pretty well proportioned length wise.

After checking and seeing that typical post length is about 14" that much stick out seemed a bit much, but I'm guessing not now.

Betarad, that's quite a tall saddle, you must feel high and mighty up there!

 

[rmi]

I'm 6' 4" also, and that's 11" of seat post, pretty much like every bike I've had in the last decade.

Holy motha! What size frame is that?

Ryan

 

[Mellow Yellow]

Dude!!

I'm 6' 4" also, and that's 11" of seat post, pretty much like every bike I've had in the last decade.

I'm 6'4" also, and I wouldn't be able to reach the pedals if my post was up that high! Can you say "high center of gravity"? What size frame is that!?!

 

[Betarad]

Holy motha! What size frame is that?

It's the largest El Guapo I could get - Large. I wish they made X Large, I need the set back on the seatpost and a longer stem than I'd like, but it works for me. I get comments on the seat post height often, but it's set to the perfect pedaling efficiency height....it's the climbing position for sure.

What really gets folks attention is that I don't drop it for descending (I hate stopping during a ride), and I'm no slouch going downhill. I've just learned to make it work. Now if someone can just make a dropper seatpost that's burly enough to go up that high, I'd be all over it.

 

[shiggy]

Wow, 36 views and none know how much stick out they have on their seat post?
:lol:

Maybe because your question looks like it has been run through several layers of translation.

I have tried the competitive cyclist fit finder several times. It always came up with an unrideable bike for me. Not even remotely close to the setups I refined for myself over the years.

 

[Duckman]

Running a smaller frame/lots of exposed seatpost as opposed to running a larger frame/shorter exposed post setup would not end up having any higher center of gravity(CG). I'm 5'11" and can typically ride both the M and L of most frames since I often fall in-between the 2 sizes. The correct saddle height of a given bike is always a direct result of achieving the proper distance from the saddle to the cranks(proper leg extension). Period. So, since 'most' sizes of a given model have the exact same BB height(measured from the ground), just longer TTs, STs, and taller HTs(most rear triangles of a given model regardless of size are the same).... Sooooo, a size M w lots of post compared to a L with less post, is EXACTLY the same CG(seat height from the ground since the BBs both are the same distance from the ground), just more reach since it has a longer TT.

As long as your not past the safe overlap line that most all posts provide, your good to go. (and of course the TT is a doable size, which is really the most/only truly important measurement on the bike anyway. ..within reason of course).

 

[Uncle Six Pack]

Wow, 36 views and none know how much stick out they have on their seat post?
:lol:

I love it when somebody responds to their own post complaining about people not responding

Anyways... 17 inch would generally be a medium frame.. while at 6'4", you should realize that you are anything but medium.

Do not use some bike fit program... go ride the bikes. You will probably want at least a large, if not x-large.

FWIW, I am 5'9", med frame, about 6 inches sticking out (that's what she said??)

 

[Bad Idea]

5'7" Small frame 8.5 inches

 

[dead_dog_canyon]

6 foot with long arms and legs - I can touch an 8' ceiling getting up on my toes a little (this allowed me to do some 5.11 rock climbs others couldn't! - out reached 'em).
I ride an 18 or 19" bike, the seat post is near the max line, depending on the bike.

 

[highdelll]

Wow, 36 views and none know how much stick out they have on their seat post?
:lol:

wow - what's a stick out?

 

[dru]

I'm 6'5", 38" inseam.

My 29er Salsa has a 24" ST length as does my custom 26er frame. Both frames have about 8 1/2 " of seat post sticking out.

I've got very long arms and legs. The ETT of the Salsa is 25" and the ETT of the 26er is 25 1/2"

I think the trend towards long seat posts is just another one of many fads in the industry. I've bent way too many posts to think that is a particularly good idea.

Drew

 

[BruceBrown]

I've been looking around to buy a frame but wasn't sure what size. Someone the other day posted a link to this Fit Calculator:
https://www.competitivecyclist.com/za/CCY?PAGE=FIT_CALCULATOR_INTRO&INTRO_LINK=NOREDIR
Going by it, I should use the top tube length as the predominant dimension, and the particular frame I'm looking at would be a 17" model. To get the BB to seat dimension the seat post would have roughly 10" of stick out. But at 6'4", a 17" seems to small, and post stick out a little much, whats your height, frame size and post stick out?

This for a 29er frame BTW, which is kind of making me rethink building a 29er.

I believe that a 17" (typical size medium frame) would be much too small and ill fitting for you.

Try a 21" or 22" frame (typical size XL) in the 29"er for your height. My riding inseam is 35.5" and I'm just about your height (192cm). Here are some photos of my "stick out"....

22" Karate Monkey (size XL frame)



size XL RIP (22" seat tube)



size XL Dos Niner...



size XL JET 9...





size XL Sugar 293...