Good topic! 2 Acres is plenty to make an mx track. 10' wide is going to be a time consuming enterprise though, especially if you aren't comfortable with running the heavy equipment. I would definately plan it out for 10" wide, but maybe start it off the width of the blade for whatever you use to move the dirt, 6' should be enough for starters. Get the corners a bit wider initially if possible though. I also like the idea of making your jumps tabletops and then removing the middles after you are happy/comfortable with them.

 

If you look at my photos i have a drawing on AutoCAD of my track that i will hopefully build this summer and of my 300ex that ill be riding on

 

hey i got a track started with alot of hills in it tho and i have alot of different types of dirt is that ok or not and do i need to build berms do they help alot

 

When I did my track, I also only had about 2 acres to work with. I had some trees so I cut them into 12 foot lengths and put them down as filler for the jumps, took up alot of space that I didn't need dirt for. I also contacted my township and they had a bunch of old culvert pipes they had taken out which really make good filler. Berms will let you take the corner harder so it is a good idea to at least have a few corners with berms.

 

what is so special about berms are they hard to ride and im not really sure how do you build them to be exact and um how big of a gap should i start with on a double

 

The berms actually act as a bumper and allows you to go in alittle harder and excellerate faster. Some of both would be good so practice gets done on both. Its pretty easy to make them with a bobcat. As far as the distance for the doubles, make a table top 30-40 foot and see what you can clear. When you find out what you can clear take the bobcat and take the middle out of the table top and with a little work you have a set of doubles. Good luck .