problems getting hard with huge penis?

as i only ever saw a real big one once in my life, i wonder if its quite normal for them having problems getting real hard erections. do cocks over 10 inches still hang between the legs when hard in most guys? saw a black extremely hung guy in a porn movie as well, i guess he was called 18inches, and he looked like having problems getting real hard as well.
another question, maybe related: is it more likely to have a curve down if your huge?

that would be statistics as for the curve.
as for the hardness, everyone is different

It's been a common complaint (in pre-Viagra days anyway) that men with really large cocks have more difficulty getting and staying hard ~ despite all the macho bravado you hear on this site. Part of that is simply physiology... a larger cock takes more blood to fill than a smaller cock, plus you have gravity exerting its force on what is basically a cantilever. Penises all start inside the body from about the same point and protrude out. Shorter penises will have less gravity to overcome, thereby putting less strain on the mechanics of an erection (blood flow/retention). The cantilever is more equally balanced with a shorter penis.

If you were to build a cantilever on the same design as a lengthy penis, chances are it wouldn't stand very long. A cantilever works best when the supported (non-protruding) section is the same length or longer than the unsupported (protruding) section. The part of the penis that is inside the body is supported... but the longer the unsupported part, the greater its likelihood of succumbing to the forces of weight and gravity. If you look at buildings that have long protrusions of unsupported cantilever, over time they all sag due to these forces. Well hung men have more to overcome than their smaller-dicked brethren.

As for curve... well that's more a matter of DNA than anything else, I would think. Look around this site... there are many big-uns that curve upward or to the side as well as those that curve down. Mine goes straight out. I have a buddy whose 8" dick curves to the side AND up. Almost like a corkscrew.

BBJ

the highest i can get it up is pretty much 90 degrees, but i must be at full erection or ast least close. I tend to have trouble getting full erections at night, or when i am tired, or if the room is too warm

I agree with BarebackJack to the extent that I don't think the angle of an erection or its curve is a measure of its hardness. The bigger you are the more the weight is likely to make you point lower than a smaller man might. You can be way below horizontal and still very hard indeed.

I find that keeping fit makes a difference to me as I get older. If I am training regularly I get more erections and ones that are bigger and firmer on average too. It is all about blood circulation. But I have always noticed a range in quality of erection: some are barely hard and only just about useable, others fully hard and my standard size, and there are still at my age plenty of rip-roaring ones that add more size and even manage to stand up pretty well.

I find with my BF that it varies from day to day, how horny he is etc. Even when he is very hard it is still shy of a 90 degree angle. Doesn't curve though, very straight. Also there are fluctuations throughout our activities where it will be softer or harder. At 10 x 6 sometimes I am a bit grateful that it isn't rock hard, otherwise I wouldn'e be able to take it. I am a more modest 7 incher and I am consistently hard as a rock. Maybe that's the price some people have to pay for being hung like donkeys, it's a fair trade though isn't it?

As far as how I hang I hang straight out. Cock curves to the left, and is very hard. Never pointed upwards even as a young teen. 8x6.25 inches

Super hard my my penis points up at about 45 degrees, usually it points slightly upward, It has a upward curve though. I have no problems getting very hard, however my penis is only slightly over 8.5" x 6.5" a ways off from the 10 plus you mention in you thread.

Like some others have said, it makes sense. A larger cock needs more blood to get hard, so it might not get as hard as a smaller one that needs less blood. I know from personal experience that it is possible to get a large penis totally hard. My FWB at the moment is roughly 8 inches and he gets positively steel hard. We've talked about it and it probably has to do with his blood circulation. He's a volunteer firefighter and so not only is he in great shape but he does exercises specifically designed to improve blood circulation in his body. Having good circulation is supposed to increase his body's ability to heal burns and also to function in a really bad fire situation. I also know he's been practicing edging for years. So it might have to do with that too. Of course I don't really care WHY!

I have to be very horny to get my full girth and stand upright, i have to be really horny. It also can take me a while to get there as I have quite a low blood pressure anyway so anything like tiredness or smoking weed really effects me

You are so right, I'm not huge, but my girth is... I just can't normally summon enough blood to totally fill my caverns. My blood pressure too is low and I'm normally pretty sloth-like... and then there's the smoke thing.

I guess guys have an easier time getting really hard when they're younger? I guess that makes sense. My bf is 23 and he's pretty big but he usually gets really, really hard which I really like. The only thing is if we have sex twice in the same day he might not be as hard the 2nd time, or if we have sex 1st thing in the morning after we did it last thing at night. But usually if we wait a whole day between having sex he gets completely hard again.

I'M ok getting hard and stayin for hours maybe cause i have a thight rather than long one. What disturb me is that when i use condoms i can reach 70% hardness....

My boyfriend in college measured 11" hard and it pointed up above a parallel to the floor. It didn't point up as much as more average guys. He'd get rock hard. Something I didn't mention was that despite being only 19 years old, he didn't have a real strong sex drive. Seemed like 3 times a week was all he was interested in, although I could get him quite hard the next night after we'd had sex. He just didn't seem as enthusiastic as usual and would have a hard time coming. That could be really good for me, but he usually just shied away from sex if we'd done it the night before.