[dhkid]

http://www.sicklines.com/2007/06/08/dave-weagle-launches-new-suspension-system-split-pivot/#more-1487

i dont get how it would be any different to a singe pivot.

 

[Transcend]

There's a pivot at the rear axle. Thus, it is not a single pivot.

 

[kidwoo]

I don't get how the swingarm doesn't break without a pivot.........


Unless that's a flex divot right in front of the dropouts....


edit........oh


The ultimate brake floater!!!

 

[zedro]

There's a pivot at the rear axle. ie: it is not a single pivot.

if the chainstay pivot is concentric with the rear axle, it essentially is a single pivot (wheel path wise yadda yadda)

 

[zedro]

I don't get how the swingarm doesn't break without a pivot.........


Unless that's a flex divot right in front of the dropouts....

trek has been doing this for years....Fuel, etc. Flex in the chainstay and seatstay (edit) if that was the case

 

[dhkid]

^^ thats what i though. i wonder if dw will give an explanation for it.

 

[MMike]

I don't get how they get the caramel in the Caramilk bar.

 

[Transcend]

I'm sure DW will come expain after lunch.

 

[MMike]

The Caramilk thing? Sweet!

 

[zedro]

^^ thats what i though. i wonder if dw will give an explanation for it.

he feels Kona has too much market share? (kidding)

what it does have is a type of floating brake mount built into the shock linkage, this might be the bigger deal here

 

[jvnixon]

Concentric dropout pivot point

 

[Cant Climb]

10 pager Easy....

 

[zedro]

ps, he stole my derailler mount design irate2:

 

[Transcend]

Concentric dropout pivot point

good to see my pseudo vector dropout boobies are being put to use explaining things.

 

[dhkid]

he feels Kona has too much market share? (kidding)

what it does have is a type of floating brake mount built into the shock linkage, this might be the bigger deal here

true, it could be what the whole faux bar part of it is doing.

 

[Transcend]

The Caramilk thing? Sweet!

precisely.

 

[zedro]

true, it could be what the whole faux bar part of it is doing.

and thats a good thing

 

[jvnixon]

good to see my pseudo vector dropout boobies are being put to use explaining things.

Yea, its a good visual. Hard to print screen though

 

[syadasti]

Trek is using the split pivot for 2008. Looks like a great trail bike:

http://www.cyclingnews.com/tech.php?id=tech/2007/features/trek_mtb_launch07

 

[stiksandstones]

Trek (new west coast suspension center) vs DW (east coast)

Who wins?

More importantly, how come the CAD drawing is not in root beer?

 

[DVNT]

Trek is using the split pivot for 2008. Looks like a great trail bike:

http://www.cyclingnews.com/tech.php?id=tech/2007/features/trek_mtb_launch07

and let the marketing hype begin....

gotta admit the trek xc bike looks bad ass

 

[zedro]

Trek is using the split pivot for 2008. Looks like a great trail bike:

http://www.cyclingnews.com/tech.php?id=tech/2007/features/trek_mtb_launch07

well i think i remember this system being used before, so doubt theres any patents

 

[syadasti]

gotta admit the trek xc bike looks bad ass

Photos here:

http://www.cyclingnews.com/tech.php?id=/photos/2007/tech/features/trek_mtb_launch07/gallery-trek_mtb_launch07

 

[Cant Climb]

"The floating lower shock mount makes for more controllable fine-tuning of the shock leverage ratio, according to Trek."

Scary stuff....

 

[kidwoo]

trek has been doing this for years....Fuel, etc. Flex in the chainstay and seatstay (edit) if that was the case

Right.....same with the yeti 575s


This looks way more mega hella cooler though.


Trek though........pretty interesting.

 

[WheelieMan]

So wait a minute, you mean to tell me that the dw-link isn't the holy grail of suspension designs?

It's pretty hard to believe that the rear axle is in any way an ideal location for a pivot. Strikes me as being convenient, not necessarily advantageous from a physics standpoint.

 

[syadasti]

well i think i remember this system being used before, so doubt theres any patents

There were HL bikes before Horst patented them too...

 

[Westy]

I've been doing the same thing on my Turner Flux for years. Faux bar with vee brakes mounted on the seatstays.

 

[stiksandstones]

Trek done good hiring Jose.

 

[Transcend]

So wait a minute, you mean to tell me that the dw-link isn't the holy grail of suspension designs?

It's pretty hard to believe that the rear axle is in any way an ideal location for a pivot. Strikes me as being convenient, not necessarily advantageous from a physics standpoint.

As mentioned, it's great for braking, not sure how it handles anything else though, why you'd do it that way etc.

 

[Lumagent Morple]

It's funny how Trek's ABP design only claims to increase braking performance, while the split pivot claims to not only increase braking performance, but increase accelerating performance as well. I can see how pedaling efficiency would be altered, given that the chain wraps around the concentric pivot in the back. I wonder if these two designs are different in any way?

 

[WheelieMan]

As mentioned, it's great for braking, not sure how it handles anything else though, why you'd do it that way etc.

If the pivot was 1 inch in front of the axle the bike would perform 99 percent the same under braking. It's not as if there is some magical braking effect achieved by having a pivot in the same plane as the axle.

 

[zedro]

So wait a minute, you mean to tell me that the dw-link isn't the holy grail of suspension designs?

It's pretty hard to believe that the rear axle is in any way an ideal location for a pivot. Strikes me as being convenient, not necessarily advantageous from a physics standpoint.

at the very least it makes the stress calcs really easy....

 

[kidwoo]

It's pretty hard to believe that the rear axle is in any way an ideal location for a pivot. Strikes me as being convenient, not necessarily advantageous from a physics standpoint.

There's no such thing as ideal or perfection. It's too subjective.

People make that shizz up so they can create goals for themselves.

 

[stiksandstones]

cantclimb....
3 pages in 20 mins
you are onto something

all this needs is some Paris Hilton

 

[sriracha]

does this mean that my recently acquired IH 6point is now outdated???


dw*link vs. split*pivot???

 

[zedro]

It's funny how Trek's ABP design only claims to increase braking performance, while the split pivot claims to not only increase braking performance, but increase accelerating performance as well. I can see how pedaling efficiency would be altered, given that the chain wraps around the concentric pivot in the back. I wonder if these two designs are different in any way?

maybe ones claiming superior shock rate that blah blah blahs, or just a sweet chainstay pivot spot (you know, the usual). Hey its just marketing, don't read too much into it

 

[syadasti]

There's no such thing as ideal or perfection. It's too subjective.

Well they could change their marketing to claim their design is the "ideal compromise" to achieve whatever they are highlighting but they probably wouldn't sell as many

 

[stiksandstones]

The thread needs some imagery

 

[OGRipper]

does this mean that my recently acquired IH 6point is now outdated???


dw*link vs. split*pivot???

It's not the latest so if you are a fashion whore, yes.