Posted by: earleb
Posted by: LoamtoHome
No way to get rid of marbles unless you sift the dirt
Sifting is un-rated. Time consuming but makes for a more durable surface. There is a drop on Pangor where the landing dirt was sifted way back in like 2011 on a Muddbunnies trail day that was very very durable.
Thinking a bit about it now, heavy braking zones would benefit from using sifted gold in it's initial build, I think it would save future repair time further down the line.
In addition to getting the marbles out of the trail surface, the sifting likely helps with successful compaction as well. On gold trails, good compaction probably helps a lot with avoiding a loose surface.
A lot of the marbles probably also get deposited onto the trail surface by flowing water, so good drainage would help with that.