Building Northshore in the UK is a massive pain in the anus. Up at hamilton hill, my local spot (the guys up there built all the northshore for forest pines too) they have just ripped out tonnes of it and left only a couple of drops as it was such a liability in the wet. They did use chicken wire but forestry don't like that. If your building straight drops and stuff, you should be fine with rough cut wood (don't ride in the wet however) but with jacobs ladders and stuff, it really isn't worth it, just dig in some berms.
These are the huge wallrides up at hamilton hill, great in the dry but lethal in the wet, been like that since day one.
Build out of wood and then cover with 6 inches or so of dirt, cant help but feel the UK climate would be a bit too varied for making this work long term. Perhaps worth a punt it you close your gaps between boards and slightly shutter the edges but that's not speaking from experience.
We dirt top all the drops down at steyning and it seems to work though there is nothing longer than a 10 foot but the dirt doesn't seem to wash away to much as there is tarps running between the mud and the wooden part
I found an epoxy product, Chemsol that I am going to try. I have some old bridges that are quite slick, so I'm going to clean them off and then apply this material. They want me to sand the old bridges down, but that' not going to happen in the middle of the woods, so I may loose on long term durability. It's worth the try.
I found an epoxy product, Chemsol that I am going to try. I have some old bridges that are quite slick, so I'm going to clean them off and then apply this material. They want me to sand the old bridges down, but that' not going to happen in the middle of the woods, so I may loose on long term durability. It's worth the try.
Don't recommend putting chemical based products on a trail. Good way to give anti bikers leverage to have the trail torn down. Environmental hazards and such. Keep in mind it rains 90% of the year in BC and the dirt top bridges have been holding.
I was thinking about the constant wet and dry of our climate. Seems like a few of the more experienced builders on here have it sorted, the polythene membrane is a good idea.
Chicken wire it, it's the standard solution and works great, as long as your not on slicks your golden. I find the hexagonal stuff works best. For ultra grip, grab some fence paint and mix it with sand and roller it on. Jobs a Goodun