Singlespeed & Fixed Gear - Is my fixie project frame to large for me?

I feel as if the bike rides fine(im just riding it singlespeed with the cassette and chainrings still on) but i have no space between my balls and the top tube when im resting. Is this ok? Id like to use the frame and parts i have if ic an because id rathe rbuild th ebike myself, but I guess if i can't i can't.

also if i change the wheels to size 700c will this effect the bikes fit too much?

The rule of thumb is about an inch bewteen at the top tube. But if you have the seat adjusted all the way down. Do you have to reach for the peddles? When you lean over to hold the bars is it too far? Your leg when on the down 6 o'clock pedal should be slightly bent but not straight. There is a lot of stuff on bike fit. Just Google for it.

If either of the answers to the question was yes then it is too big. I am 6' 5" and ride a 61cm bike, just to give an example. If when you are leaning over the bike and it feels too far. Even if just on the drops it will make your back ache after a ride. The first and MOST important part of getting a bike is fit. It is the difference between fun and feeling tortured.

well see thats the thing ive been fitted for my other roadie( a size 54 cannondale r700) and i know how i should feel while on the bike. My legs are not too outstretched at 6 oclock, the seat is a good inches up so there's room to adjust, and im not too outstretched while im in the drops. Other than the standover problems it seems to fit ok.

smaller frame, longer stem.

In that case I'd go with it. You can always get a different length stem or other tweaks. Just as long as the bsaic fit is cool. It just sounds like the frame is maybe only a few centimeters too big. I'd say as long as when you lift your balls there is a gap it would be okay. It is just not a perfect fit as a sized bike would be. So it might be a little less efficient or other general issues with wrong geometry for your size.

Get a top tube pad as a safty measure when doing skids for sure! ;)

standover is my main concern when fitting a bike...

what if you have to stop quickly and get both feet on the ground? if you run a front brake it's even worse- you can get that thing going where the back wheel is still in the air when your feet hit...

just think how your boys are gonna feel if there's no give between them and the top tube...

yeah my old bike (http://www.fixedgeargallery.com/2005/july/EddieBrannan.htm) was too big for me. nuts-to-tube contact when standing with both feet planted. i could ride it, but always felt it was riding me. got me a proper bike 3cm smaller and she's perfect.

I (6'2") ride a 62cm frame, but it only has a 57cm top tube. So my standover is basically zero (negative without shoes), but my reach is perfect. Never been a problem.

My other frame is a 57cm with a 58cm top tube, the standover clearance is large, but the reach is identical with a 1cm shorter stem.

Al