I need to know how to make a good but sustainable. but i am not dealing with a very big hill though. could someone give me some tips and ideas?
A good start would be do describe what your talking about. I have no idea what you are even asking for???
my bad
i forgot to put downhill trail. haha. srry i want to create a good fun but sustainable downhill trail. but i am not really deally with a very big hill. as you can see i live in indiana.haha:o
Dude you have already made a similiar thread Muni trails
If you want better answers you should have made a better thread title…
So what muni do YOU like? If you like jumps and structures then build jumps and structures… there are good tutorals on how to make mtb tracks/structures on the internet, just do a bit of searching and you should find good results.
So you want to make a good DH muni trail right? When you say sustainable do you want it to last a long time or what?
Dig. Dig a lot.
(Sorry, not very helpful)
I don’t see many “downhill” trails near me, though I don’t seek them out. There are certainly trails the change from high to low elevation in a short distance as the crow flies, but they’re usually winding trails with switchbacks. Really they’re just descending trails wound back and forth on a hill.
This keeps the grade of the trail lower and gives places to let the water flow off.
Because of the rain we get in my area, any trails that go down straight down a hill are susceptible to heavy erosion and become rutted and riddled with debris and loose rock.
Admittedly these can be fun (or painful) but they don’t stand up to our shared-use sustainable trail ideals.
Winding trails are cool too. We’ve got some that just go on and on.
Although it’s not an elevation map, you can probably tell where the hills are on this trail map based on the trail design:
I refuse to respond to a thread with such a vague title that is really just repeating another recent thread by the same poster on the same topic.
edit: DoH! 
OK, semi-real response: If you really want to focus on just downhill rides, find a ski lift. As to trail building, I’m pretty sure the “hill” is a necessary component of “downhill”, and I think we’ve already established that you don’t really have much in the way of hills.
Before you build a trail somewhere, it’s a good idea to start by asking who’s land it is? If it’s not yours, it’s probably not okay to build trails there, especially if they will cause erosion. Private land that belongs to you/your family? Go for it. Otherwise, it may be better to seek out trails first; you can learn a lot from looking at how they are constructed.