[xy9ine]

sexy bike. interesting rotating link mount design.

 

[jonKranked]

cool idea. massive bearings. must create an interesting shock rate.

also, i spy them using an outboard BB for the swingarm main pivot. interesting.

 

[mullet_dew]

I dont see the benefit of that ridiculously huge bearing. The metal piece inside it acts as the second link, what does it accomplish that a normal link and a smaller bearing couldn't? It is a very creative way to do it, but i see it like hubless wheels, looks cool, but no advantage.

 

[xy9ine]

^makes for nice simple & compact packaging. otherwise you'd have to use another push rod between the swingarm & link (w/ bearings at each end, of course). i like it.

 

[buildyourown]

I dont see the benefit of that ridiculously huge bearing. The metal piece inside it acts as the second link, what does it accomplish that a normal link and a smaller bearing couldn't? It is a very creative way to do it, but i see it like hubless wheels, looks cool, but no advantage.

Replaces 4 smaller bearings with 2 larger ones. Plus, that's the bearing that sees the largest static load. Larger race with lots if tiny balls means better bearing life.

I like it. Elegant solution.

 

[Pslide]

Replaces 4 smaller bearings with 2 larger ones. Plus, that's the bearing that sees the largest static load. Larger race with lots if tiny balls means better bearing life.

I like it. Elegant solution.

But the 2 larger bearings will weigh much more than the 4 smaller ones...

I'm with Mullet Dew.

And it's doesn't even look that good IMO.

Still, credit to the builder...

I'd always thought about using BB bearings as a main pivot, nice to see someone actually do it. I think it's a pretty easy way to design a main pivot for a custom fabrication.

 

[xy9ine]

But the 2 larger bearings will weigh much more than the 4 smaller ones...

you're also eliminating a push link (or links) and a couple bolts, and gaining a more rigid assembly with a (most likely) longer service lifespan.

and it looks hot, imo (to each his own, obviously).

 

[mullet_dew]

Replaces 4 smaller bearings with 2 larger ones. Plus, that's the bearing that sees the largest static load. Larger race with lots if tiny balls means better bearing life.

I like it. Elegant solution.

Doesn't the (big cylinder in the big bearing) still rotate around the bolt that goes thru it, needing a bearing or bushing?

PS post# 187, gangsta!

 

[xy9ine]

^you might be correct, there. guess that would have to rotate within that disc somehow.

 

[OGRipper]

I'd always thought about using BB bearings as a main pivot, nice to see someone actually do it. I think it's a pretty easy way to design a main pivot for a custom fabrication.

The latest generation of the SC Bullit is basically this.

Pretty cool rig but like others have said it seems like a pretty complicated solution to a linkage-driven single pivot. Also, the one half carbon tube seems kinda pointless. But it is way nicer than the frame I (haven't) made, so points to them for the effort.

 

[IH8Rice]

also, i spy them using an outboard BB for the swingarm main pivot. interesting.

SCruz uses a similar bearing on some of their bikes

edit: sniped by OG

 

[trib]

I quite like the full length carbon post and the carbon tt, but a bit like Nicolai in the fact that it's too industrial for my taste. Get rid of some of the angles, unnecessary supporting struts and gussets etc and it could look a whole lot nicer. As OG said though, looks way nicer than any frame I have made (or not made as the case may be).

 

[MrPlow]

Nice design elements there. All for using BB bearings (mine does too )
Big bearing would be nice and stiff and light too.
I like it.

 

[Steve M]

Tomac used a similar eccentric bearing system on their Snyper 140 if I recall correctly. Pretty cool idea, not sure how well it translated into a real product (in either the BF one or the Tomac) but it's a neat solution for super short links.

 

[mandown]

are those wheels green? seriously, do they make green wheels?! awesome.

 

[w00dy]

The carbon won't save much in that situation. Pretty much just for looks.

The linkage design is interesting. The bearings wouldn't be much of a weight gainer, but that giant chunk of aluminum they support would be.

 

[SuspectDevice]

Their both was across from mine at NAHBS. I got to fettle that machine. It's offically badass. And chromed!