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  1. #1
    fc
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    The Backyard Pump Track

    It is here. Folks thought I was screwing around the whole time. Little did I know that I was working.

    Feature: The Backyard Pump Track – Introduction | Mountain Bike Review

    Read it and comment so I can screw around some more.

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  2. #2
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    Francis: "Honey, I'm doing research for an series of articles. I need to tear up the yard."

  3. #3
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    YES
    Good article, Francis. Mainstream (rider and especially local govt.) acceptance of pump tracks will be as good for cyclists as trail access. Just like children should have free playgrounds in their neighborhoods in addition to natural resources (like hiking, swimming) tucked farther out in more wild places. There is a clear synergy between the two, and fighting for one doesn't pull resources away from the other, but rather strengthens the general principle (play is valuable, riding is valuable) and builds the community, whether we're talking about getting kids outside or getting rad on bikes.

  4. #4
    SOG
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    Nice post. Pump tracks are great for everyone regardless of skill level. There is a certain art to building them correctly so they have flow. I need to look at my yard to see what is possible.

  5. #5
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    You have a good life "working" I'm biased, but I do like the article and shared it amongst my little world.
    My Cycling Videos: Vimeo | YouTube | My Website

  6. #6
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    Now I want to ride a pump track, but don't have a yard to build one in. Are there any public accessable pump tracks in the bay area?

  7. #7
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    Where do get the extra dirt for the berms?

  8. #8
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    Good poll about pump tracks

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  9. #9
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    The Backyard Pump Track

    I just moved to a new house on an acre... And it needs some "landscaping".... I gotta do this!
    I hope you have a big trunk... cause I'm gonna put my bike in it!

  10. #10
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    All the other kids with the pumped up kicks
    You'd better run, better run, faster than my bullet
    Attached Thumbnails Attached Thumbnails The Backyard Pump Track-img_8855.jpg  

    The Backyard Pump Track-img_8856.jpg  

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  11. #11
    sbd
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    Super cool article...thanks!

  12. #12
    fc
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    he is pumped!
    The Backyard Pump Track-img_8845.jpg


    this track belongs to a very special/lucky person. (name witheld for privacy)
    The Backyard Pump Track-img_8847.jpg


    So yesterday I did my routine again. Drive to SC and ride for four hours, go home, eat bacon, take nap and drive my kid to SC to do some pump track til sunset. It was grueling but so worth it.

    He is happy and we get good conversation. 12-year old said he will lay out a project plan for our own pump track now that he's convinced mom it is a good idea. He said he will list our play structure for free in Craigslist and he will pay $50 of his own money for dirt.
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  13. #13
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    Did you use Technisoil to seal your track fc?

  14. #14
    fc
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    Quote Originally Posted by SpecRider96 View Post
    Did you use Technisoil to seal your track fc?
    I got a bunch of soiltac. It looks and smells like Elmers Glue. I'll apply it tomorrow. Here's the info:

    1)soiltac: by soilworks.com Soiltac is an erosion control polymer which binds with the surface material to create a durable surface crust of flexible solid mass. Soiltac is only available in bulk and requires mixing with water in a large water trailer. Soiltac also requires re application annually and further treatments will continue to increase th surface strength, creating a cumulative effect.

    2.)G3 pathway stabilizer: by technisoil. G3 Pathways stabilizer is a similar product to soiltac, but comes in pre diluted 5 gallon totes which is far more convenient for smaller home pumptracks. G3 Pathway stabilizer requires re application annually.

    3.) Magnesium Chloride: Covering your riding surface in magnesium chloride pulls moisture directly from the air which maintains a harder riding surface and reduces dust in dry climates.

    4.)Asphalt: Covering the riding surface with asphalt is the ultimate in water savings. I built a track in rock hill northcarolina for PumpTraxUSA.com that was completely asphalted. I have attached a photo as well as the rendering of the track



    Treatment is good as Weir's track is maintenance and water free but it rides soooo good. So it's drought friendly. I just have to blower this darn thing and we're good.
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  15. #15
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    Soiltack is what is on Peacock Pit track also?

  16. #16
    fc
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    Quote Originally Posted by ARider View Post
    Soiltack is what is on Peacock Pit track also?
    Yup, that's what is on there right now. You been there?

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  17. #17
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    Francis-How much does it cost for enough soiltac to cover your pumptrack?

  18. #18
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    Soiltac sounds like a great solution to lock on the track. My track needs a tune up. I donated my tarps to the SDSF flow trail so they weren't available and I lost a lot of soil during the few heavy rain events this season. I think if I would have had soiltac then it wouldn't have lost so much dirt.

  19. #19
    fc
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    Quote Originally Posted by cheetabrian View Post
    Francis-How much does it cost for enough soiltac to cover your pumptrack?
    Don't know. I have 5 gallons right now. The application is mix it in with 10x water and then spray it on the track. Get it to sink half an inch Coat it but not too thick so the water can still seep through.

    Some folks use Elmer's glue at $20/gallon.


    fc
    Attached Thumbnails Attached Thumbnails The Backyard Pump Track-ak_20150422_ak1_4662.jpg  

    The Backyard Pump Track-ak_20150422_ak1_4594.jpg  

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  20. #20
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    If you care about your plants. You may want to reconsider. As well, you should think twice about dumping huge amounts of this salt into your personal ecosystem as well as the general environment. This stuff is not generally toxic, but large amounts of it are going to create issues. Just be careful of your Wife's flowers, possibly your favorite tree.

  21. #21
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    If the flowers die, then we get the whole yard??
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  22. #22
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    If you use good dirt with good clay content to begin with you don't need to coat it all. The clay content of the dirt is what allows it to pack up nice and firm and basically turns into concrete. When you have dirt like this all you have to do is sweep the track and then lightly water it before riding.

    I can see if you have a large track and crap dirt how using a coating would be beneficial but I don't really like the idea of dumping a ton of chemicals in the backyard where my kids play.

  23. #23
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    Quote Originally Posted by beaverbiker View Post
    If you use good dirt with good clay content to begin with you don't need to coat it all. The clay content of the dirt is what allows it to pack up nice and firm and basically turns into concrete. When you have dirt like this all you have to do is sweep the track and then lightly water it before riding.

    I can see if you have a large track and crap dirt how using a coating would be beneficial but I don't really like the idea of dumping a ton of chemicals in the backyard where my kids play.
    You could rototill in a few bags of Portland cement or lime too. One problem with that though would be raising the pH of the soil and make it unusable for any plants down the road.
    All out of S**** and down to my last F***

  24. #24
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    Quote Originally Posted by beaverbiker View Post
    If you use good dirt with good clay content to begin with you don't need to coat it all. The clay content of the dirt is what allows it to pack up nice and firm and basically turns into concrete. When you have dirt like this all you have to do is sweep the track and then lightly water it before riding.

    I can see if you have a large track and crap dirt how using a coating would be beneficial but I don't really like the idea of dumping a ton of chemicals in the backyard where my kids play.
    Good dirt is the key. I just bought 5 cubic yards of good dirt that is filtered of rocks. Cost was $250. So 50 yards for an average sized track is $2500.

    Mark Weir has very good dirt clay dirt sources in Novato but he had to build his own motorized dirt filtering machine. He put in 400 yards of dirt (added to what was already there) and a whole lot of neighbor labor.

    Sweeping and watering can be a pain. Aside from the water costs and waiting, I usually just want to ride the track 5 minutes a day and this affects me getting out there.

    My base dirt has a lot of rocks and they all surface eventually.
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  25. #25
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    Ok thanks Ill look into that, Alex recommended the G3 to me.

  26. #26
    fc
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    We need to be able to run RC too . Maybe not this 7 lb monster but something else lighter.

    fc
    Attached Thumbnails Attached Thumbnails The Backyard Pump Track-p5070003-001.jpg  

    The Backyard Pump Track-img_3432.jpg  

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  27. #27
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    As it happens, I am re-landscaping my yard (unfortunately not for a pump track) and I have a bunch or high-clay content soil which I need to get rid of. When baked by the sun, this stuff is like rock. It wouldn't be enough for a whole track but it's free for anyone who wants it.

  28. #28
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    Got my kid a good sprayer and he got the deed done. We'll check it tomorrow.
    Attached Thumbnails Attached Thumbnails The Backyard Pump Track-11202597_10153198707778213_5788286896266412964_n.jpg  

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  29. #29
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    fc: Any updates on how the Soiltac has worked out thus far?

  30. #30
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    Soiltac has been awesome!!. I just blower the track and ride it these days.

    I'll update later today and inspect it.
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    Does the Soiltac require a specific type of dirt "topping" the pumptrack? Sorry for all the questions, but I'm in the middle of a build and our native dirt seems ok for setting up the initial course, but it looks like I'm going to need something finer (granular?) for the finishing.

  32. #32
    fc
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    Quote Originally Posted by dj1809 View Post
    Does the Soiltac require a specific type of dirt "topping" the pumptrack? Sorry for all the questions, but I'm in the middle of a build and our native dirt seems ok for setting up the initial course, but it looks like I'm going to need something finer (granular?) for the finishing.
    Not at all. Soiltac just solidifies and bonds any dirt. I've seen videos were they just put in on top of sandy soil in the desert and it prevents it from blowing away.

    It works best on compacted dirt, sinking in about an inch down into the soil. It basically captures the dirt at the point when it is applied. And various thicknesses can be applied but the best is when it's still seeps in to the ground and allows water to seep through.

    So the best parts of the track are the ones with a solid, compacted crust of soil that is rock free and has clay-like properties. It just gets better and better with riding. The ones that were broken, not packed when soiltac'd is breaking apart.

    Minimal watering is required now and I only do it when I want to compact a certain part.
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  33. #33
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    The Backyard Pump Track-11116368_10204397830965762_1248012221948854425_o.jpg

    Native dirt was used for the rough shaping and then topped with 3/8 minus road base. I got nervous because rain is in the forecast for this weekend so I applied a relatively thin layer of G3 to the course while I wait for the Soiltac to arrive next week. Haven't given it a ride yet...

  34. #34
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    Quote Originally Posted by dj1809 View Post
    Click image for larger version. 

Name:	11116368_10204397830965762_1248012221948854425_o.jpg 
Views:	410 
Size:	135.3 KB 
ID:	993199

    Native dirt was used for the rough shaping and then topped with 3/8 minus road base. I got nervous because rain is in the forecast for this weekend so I applied a relatively thin layer of G3 to the course while I wait for the Soiltac to arrive next week. Haven't given it a ride yet...
    Awesome!!!!!!

    1 used 1:10 ratio of soiltac to water when spraying. You want it to leave a coating but still allow water to seep through. You can go thinner for more seepage or thicker for more of a shell on top.
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    That looks sweet. You may need to get some planting going asap to support the soil off the track. If you get serious rain and that uncompacted soil starts to wash out, you're going to loose the edges of your track. Plants will also hold down the dust if it gets windy.

  36. #36
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    What sucks with rain is it brings the height of the berms down even if it doesn't threaten the structure. I have a friend who covers his in the off-season.
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    Quote Originally Posted by peter.thedrake View Post
    That looks sweet. You may need to get some planting going asap to support the soil off the track. If you get serious rain and that uncompacted soil starts to wash out, you're going to loose the edges of your track. Plants will also hold down the dust if it gets windy.
    Turf/landscaping being looked into as we speak. I wonder how much snow runoff will affect the pump track. I guess I'll find out next spring.

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    Why the G3 and Soitac? When you applied the final product did you rough up the surface , apply then compact or did you just apply then compact. My track has been done for almost two months now and Im just getting the time to apply the techisoil , actually I'm using a product called Gator Stone which i hear is better than the Technisoil, we shall see.

  39. #39
    fc
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    Quote Originally Posted by SpecRider96 View Post
    Why the G3 and Soitac? When you applied the final product did you rough up the surface , apply then compact or did you just apply then compact. My track has been done for almost two months now and Im just getting the time to apply the techisoil , actually I'm using a product called Gator Stone which i hear is better than the Technisoil, we shall see.
    I did the shortcut. I just compacted it then applied it on top. That seems to work well as it allows the top to hold it's shell better. It's good to make it thin enough to seep through.

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    Cool, thanks so much. Thats just what I was going to do, might give Alex a call just to be safe. I was told to apply it then compact but was not sure if the surface should have already been compacted. Im looking forward to not doing so much maintenance on my track!

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    How are your tracks holding up to the rain? Mine was built in May so these past two storms were the first real rain it saw. I have had to shovel in some low spots , tweak a drain and I will need to add some moar soil tech. Does anyone tarp theirs for the winter? If we really get pounded by el Nino Im thinking of getting a few tarps to cover the rollers and other high spots.

  42. #42
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    We live on a little over an acre and just got the ok from the missus to build a pump track ….so now the planning begins!
    Rick~
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  43. #43
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    Quote Originally Posted by SpecRider96 View Post
    How are your tracks holding up to the rain? Mine was built in May so these past two storms were the first real rain it saw. I have had to shovel in some low spots , tweak a drain and I will need to add some moar soil tech. Does anyone tarp theirs for the winter? If we really get pounded by el Nino Im thinking of getting a few tarps to cover the rollers and other high spots.
    I need drainage now. Now that we have rain, I actually know where the water collects.

    The other thing is we need to tarp the berms. What happens is over a rainy season, the berms can sink by a foot due to compacting and erosion.
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    Quote Originally Posted by SpecRider96 View Post
    How are your tracks holding up to the rain? Mine was built in May so these past two storms were the first real rain it saw. I have had to shovel in some low spots , tweak a drain and I will need to add some moar soil tech. Does anyone tarp theirs for the winter? If we really get pounded by el Nino Im thinking of getting a few tarps to cover the rollers and other high spots.
    Looking good! My track has been around for a few season and was designed with drainage with culverts. Last week I opened the drains and swept all the duff in anticipation of the rainy season.

    I wandered around during the heavy storm on Monday to ensure it's draining well. Haven't taken a closer look in the past few days but it's probably in great shape.

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    Are you going to add some drains with culverts in the berms ,turns etc? I had to tweak my drains and make culverts after that last rain as the water was not draining fast enough. Adding moar Gator Stone today (same stuff as soil ted etc to help firm it up.
    Quote Originally Posted by fc View Post
    I need drainage now. Now that we have rain, I actually know where the water collects.

    The other thing is we need to tarp the berms. What happens is over a rainy season, the berms can sink by a foot due to compacting and erosion.

  46. #46
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    The Backyard Pump Track-image.jpg Btw , here's a pic of my track , it's a bowl with a few rollers into a kidney .
    Attached Thumbnails Attached Thumbnails The Backyard Pump Track-image.jpg  


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    Sry for the sideways second pic but there is a really fun bowl around that pine tree.

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    Quote Originally Posted by DustyTrail View Post
    We live on a little over an acre and just got the ok from the missus to build a pump track ….so now the planning begins!
    Sweet! post pics of the progress if you can!

  49. #49
    fc
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    I hired a new weed control crew for the track. Here he is in slo mo https://www.facebook.com/francoismtb...3633447758213/
    Last edited by fc; 11-19-2015 at 08:08 PM.
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    Brillant!

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