Some general jib questions

Well I would suggest either a double barrel rail with i believe 1.5 inch diameter pipes or a 4 pipe rail with 1/2 inch pipes. You shouldn't have a problem with pipe cracking unless you are coming down from a high spot onto the rail. I have had some cracking a few times but that is because of excessive use 270 ing on. Now for ware and tear. I think after excessive use you may see white ish marks on the bottom of your skis but that is after 100s of times hitting it. The most wear and tear you will get will be during the summer if you are landing on rocks or anything but astroturf. If you are using grass you will be fine i think. I personally use 4 pipe rails on a 2x4 and it works great. You can look at some of my videos if you wish.

Here is my most recent edit
http://media.nscdn.com/uploads/member/videos/1215970841Turf02-03_Combine360x2401.mov

1. yes i would suggest more than one, id say 2 is most common, and would be much stronger. 3 is getting more like a box

2. i'd say either 2" or 2.5" is about the right size. also there are different thicknesses. it comes in (i think) schedule 20, 40, and 60. if i remember right sched 40 is thicker than sched 60. im pretty sure i have sched 40, which is a good thickness. (i wanna say 3/16 - 1/4 inch thick)

3. the PVC will hardly do any damage to your skis, unless your crack the PVC, then the splinters can rip up your base. the thing i would be most worried about is having dirt/rocks/sticks in your inrun/outrun, especially if your not using turf as a landing. so id say if you have some extra cash and its not a big deal, go for some urban condish skis.

another thing is if you have scratch bs, id assume you dont use them on rails much? if not, then you will probably have a problem with your edges catching.

plus karma for both of you++ great info thanks alot. i think ill be using turf inrun and landing so i dont mess the skis up too much. i use the BCs on rails some because i only have one pair but i think i will try and get some urban skis for that if i can find some for cheap. what do you think would be a better set up one long flat rail or a flat down? thanks alot

Well i have two 10 foot long double barrel rails. This gives me the option of having multiple set-ups. So sometimes i would line them up together to make a 20ft flat rail, other times I made a twenty foot down rail, and I also made a flat down with them. These setups will all depend on the terrain of where your set-up will be. My back yard has a roller in it, which makes it possible for me to have these multiple setups without making one specific kind of rail like a flat down. The roller creates a flat part in the hill. If you don't have the convenience of this though I would recommend building a long flat rail. But you may want to consider building two ten foot long rails to keep your options open, you can still make it one long flat rail by lining the two up.

im gunna say a long flat. you can do anything on them.