Whoa, never have seen a "Tall bike" do this!

[54shadow]

http://www.youtube.com/watch?v=GEhLYKJA9pQ

 

[jackdaw]

That thing is super cool. I bet it freaks people out big time!

 

[54shadow]

That thing is super cool. I bet it freaks people out big time!

When the guy went down behind the cars, I thought, ouch, then, here he comes, still on the bike, only, low and stretched out.

 

[kingfish254]

That is WAY cool!!!!!! We need to find the build thread on that baby!!!!

It really looks cool in both configurations. I generally don't care for the looks of tall bikes because they typically look like what they are (a bunch of bikes welded on top of each other). But that one is another story. Thanks for sharing that. Way cool engineering!!!

 

[deorman]

Still my favorite tall boy.

http://www.youtube.com/watch?v=yORN4uCkc_M

 

[honestherman]

Man, I love that bike. Would like to know how we can buy one.

 

[54shadow]

We gota get our top people on this one here and figure it out.

 

[kingfish254]

The tall bike taking jumps down the mountain bike trail is insane, but I still like the Russian convertible chopper tall bike much better.

 

[yoothgeye]

I've seen the tall bike to chopper transformer brought up many times (was like 3 threads in one week on here a few months back) and people have posted it to my facebook a while back. The build is still mostly a mystery, but uses something like the hydraulic lift on most office chairs, but I don't know how he gets the amount of travel, but I'm not familiar with all the types of similar hydraulic units.

Notice the seat has 2 supports, I believe the rear one actuates the cylinder (like the handle on your office chair) so when he gets off the saddle and bounces his weight up the cylinder expands to tall bike, then raising his weight off the saddle and bouncing back down on it it compresses again.

That's the idea, now all of you have to find the correct cylinder and work out the maths and physics. Have fun.

 

[abe lugo]

Is there or must there be a chance that that the video is faked out with two similar bikes one tall, one chopper and some editing? Anyone have multiple shots of this actually bike?

 

[Rat Rod]

Looks like the two silver tubes that act as the seat stays are the hydraulics.

 

[54shadow]

Looks like the two silver tubes that act as the seat stays are the hydraulics.

I was just thinking that the moment I was clicking this post.

 

[Houndog]

Hatcthback struts perhaps?

 

[deorman]

I'm thinking awning supports, some of them work like hatchback struts and are built to work with the heavier load. :|

 

[Houndog]

I'm thinking awning supports, some of them work like hatchback struts and are built to work with the heavier load. :|

I think that's more like it...Hatchback struts do seem a bit small...

 

[kingfish254]

I can hear the gears turning in the brains at RRB Engineering Inc.

 

[Captain Awesome]

I can hear the gears turning in the brains at RRB Engineering Inc.

my gears have been turning since i watched that video

 

[Rat Rod]

The interesting feature is that he somehow managed to get the hydraulics to extend and reverse by hopping up and down on the seat....at least that's how it appears.

Maybe it's just the downward application of force that causes the hydraulics to move.

 

[CCR]

I was thinking it was in the seat post / seat post strut. looks like the seat stays just act like trailing arms.

 

[yoothgeye]

All you guys are so dumb, I guess you don't believe in a little thing called, "magic."