razor244 said:
so i started cycling a few weeks ago.i purchased my bike offline not too concerned about all the finer details just intended to get some exercise. i find myself getting more and more into cycling . my frame hight is a bit high i dont have that inch and 1/2 -2 in of space between my junk and the top tube( my package rest right on there). now i havent had any problems while riding i was just wondering how this affects my performance while riding compared to if i had a slightly smaller frame.
A poorly fit bike can cause back pain, increase fatigue over a ride, make you feel uncomfortable, and a host of other things. That said, room between your junk and the top tube doesn't really say anything about fit. If you want to get a definitive answer re: how your bike fits, you'd need to get a bike fit done at an LBS. Note that there are no hard, fast rules about bike fit. You can google "bike fit" and find all manner of different descriptions, rules of thumb, "standards", and so on, but really they're all just guidelines.
As for your own fit, now, keep in mind that the space between your grollies and the top tube is pretty much dependent on how low your grollies are hangin'. If it's 10° and your naked, you might suddenly find that there's more room there than what you'd seen prior. In general, proper bike fit has more to do with how much your knee is bent at the bottom of the pedal stroke, the angle of your back when your hands are where you usually have them when riding, the angle between your arms and your torso, the bend in your elbows..........
Your fit on a given bike can be adjusted within limits by changing to a shorter or longer stem (the thing that holds the handlebar), to handlebars with more or less reach and/or drop, by moving the saddle back or forward, by switching to crankarms of a different length, by using a stem with a different angle, and so on.
Iffin' I were you, I'd have an LBS look at you on the bike.