First Vid -- (+ music)
Second Vid -- (no music and a little shorter)
This is my free/soul rider offering to ATB and gravity sports.� I am providing this design/concept to anybody and all to use.� I have posted this to my photo blog, vimeo, Youtube and multiple forums.� Any attempt to patent will be challenged.
Designed, built and tested by W.A. Wurts in Princeton, KY, USA.
This is ProtoType2
Designed and built: March-April 2008
Tested:� April 5, 2008
Please note that this line is the pivot axis irrespective of the angle at which the pivot pin enters the pivot hole or what angle the hanger face is in relation to the pivot axis.
First Vid -- (+ music)
Second Vid -- (no music and a little shorter)
This is my free/soul rider offering to ATB and gravity sports.� I am providing this design/concept to anybody and all to use.� I have posted this to my photo blog, vimeo, Youtube and multiple forums.� Any attempt to patent will be challenged.
Designed, built and tested by W.A. Wurts in Princeton, KY, USA.
This is ProtoType2
Designed and built: March-April 2008
Tested:� April 5, 2008
3 wheel all Terrain baord is anything but a new idea. There was a very successful 3 wheeled off road board that was incredible...
I have yet to see a "successfull" all-terrain luge/skeleton. I believe the dirtboard your are referring to is the OUTBACK, a very different "design concept:"
Three large 10.5-12 inch wheels permanently fixed to a one-piece frame in vertical position:
Different
Deck leans but frame/wheels do not:
Different
Deck operated cantilever steering/turning:
Different
Exceptionally high center of gravity (because deck must be above frame and wheel axles):
Different
Tendency to flip and instability turning/sliding at higher speeds:
DIFFERENT
BTW I own an Outback (bought it because I was told it was a carver):
TOTALLY DIFFERENT RIDE / DESIGN (twitchy as hell) -- I keep it because of the cantilever steering novelty. Definitely not a carver in my book.
The Outback rear wheel is permanently fixed at a 90-degree angle relative to the whole frame/ground. The wheels and frame assembly do not lean into the turns. This means the G-force vectors are pushing at the board from the side (perpendicularly). So when you attempt a power slide, the board wants to flip. Obviously this is not good for ultra-tight high-G carve or power sliding. Furthermore, the deck is the only piece that leans into the turns. Because the deck must be placed above the frame, it is higher than the plane of the axles, further de-stabilizing the board with a high center of gravity.
ProtoType2:
With a dual wheel channel truck steering system up front, the rear wheel (gyroscopic) leans with the deck into the turn. This keeps the G-force vectors more parallel to the rear wheel, making for excellent high G traction. The deck is level with or below the axles. Dual front wheels keeps high traction in the front of the board for high speed, high-G turns. Traction on the beast is outstanding. The gyroscopic effect of a large (12" bike or greater) rear wheel increases stability with speed. The wheel wants to maintain its position/angle relative to the ground (no speed wobble).
The video is just proof of the first day test rides. This concept has several potential applications. Many refinements are called for before taking it up to warp speed.
The rear fork assembly needs redesigning. I have pretty much worked that out.
I could probably patent the rear fork assembly/design and sell it as a single, gyroscopic wheel truck system to adapt mountain boards to 3-wheelers. You'd be amazed what is patentable. Worth doing? I have absolutely no desire to do so. Its principal advantages are stability at high speeds and very good traction for relatively tight high-G carving in the 20-30 mph range, Once you hit 30 mph, you have to pick your line and hold it, with gentler arcs for turning.
Ultimately, I will probably develop this design concept for a luge/skeleton type variant with a disk or caliper braking system.
ProtoType3:
I will be moving toward a high performance recumbent variant more like a street luge. Kind of like a low-to-the-ground, lean steering, fighter pilot for long winding roads with sweet grades. Possibly an off-road performance model also (titanium rear fork?). Maximum velocity.
ProtoType4:
A terra-sailboard variant.
I have a new channel truck design (not in ProtoType2) -- possibly designed and abandoned previously. My variant should be more evenly responsive in terms of suspension tension.
3 wheel all Terrain baord is anything but a new idea. There was a very successful 3 wheeled off road board that was incredible...
Are you talking about an Outback or something else?....very curious.
I still ride my Outback... don't find it to be twitchy as hell or to have a high center of gravity but I have a lot of hours on it.
I ride my version of the Outback at similar speeds to this three wheeler in the video but I think this version has good potential to go a bit faster with the lower COG, very curious about wobble or no wobble and will be building one to try....I like it!!
The standard Outback board set up...the back wheel tends to twist in hard carves, that is why I modified mine to the wider/smaller/lower height tires/rims.
My son power slides the crap out of his Outback, all the time, while riding dirt and grass...not that easy to flip over.
Jumps off 3-4 foot walls on campus all the time and has thrashed the frame on two of them, been re-welded several times.
Last edited by oldnbroken; 06-11-2009 at 04:09 AM..
All-Terrain StandUp - Luge - Skeleton
on Vimeo
Linear Mode
