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To the person that asked, Im guessing the bolts in the bottom bracket junction are bolts to attach a weight maybe?
Half the quality?
This!
LT version 160/170 with and without motor.
A more."trail" version of the slash, while the slash will stay the bikepark machine it is
Maybe this is old news, but from pit bits: looks like the prototype Session Lachie is running has an adjustable main pivot position via flip chip which is neat, but the the really interesting thing to me is how high the idler is which would give the bike very low anti-squat. I'm curious what the driver is there, since there's already pretty minimal pedal kickback in the current released model. It's also interesting that it looks like even the higher pivot position is lower than the current model, it feels like DH bikes are for the most part settling in on lower high pivots.
Knolly wanted to sue Intense for less than this a few years ago, apparently they patented the seat tube-downtube intersection at a specific angle... we'll see what they do with this one 😬
"This patent describes a rear suspension system with at least four inches of travel and a seat tube that can accommodate a dropper seat post with at least four inches of travel. The patent also states that the seat tube intersects the downtube above the bottom bracket at an angle between 50° and 75° relative to the horizontal."
https://www.vitalmtb.com/forums/The-Hub,2/Knolly-Suing-Intense-Claiming…
It’s hard to say what’s “better”, Jackson just won 4 in a row on low pivot, Gracey won 2 on high pivot, Max in junior won on mid pivot. But I do agree things are settling around the mid pivot area where you can get the best of both worlds.
We could go back in time and try this dual pivot? Low speed impacts the axle moves vertically and high speed impacts the axle moved backwards
It wouldn't surprise me if something like that popped up again..
Cannondale had that split/dual shock proto a few years ago that never really saw the light of production.
The Cannondale was trying to separate and control damping but had a fixed wheel path.
The bike Joe posted has a ‘variable’ wheel path depending on how the two shock compress at any given time.
not in the dual shock configuration, but that did ultimately evolve into the current gen jekyll.
the dual shock config was an interesting concept. they were experimenting with having one for damping and one for the spring.
The BCD is completely different than the concept from Cannondale. It has two pivots for the swingarm, each pivot with it's own shock and those shocks would be tuned specific to each pivot.
The low pivot would have a shock tune with lower LS compression and really high HS compression. The high pivot would then have lower relative HS compression and really high LS compression.
Not sure how the spring rates would pan out as it's two springs in series but each will have a different leverage ratio.
EXT with a new or refreshed fork.
Fun fact.I used to work at that shop. The owner is a @%&
Didn’t FTW have a proto with a similar concept?
Wouldn't this need an idler and have really weird pedalling characteristics?
Make the seattube more than 76°, do not infringe the patent and do not have a stupidly slack seat tube. Win win.
There's a throwback, I always wanted to try a splinter
or whatever this was going to be (similar to FTW above)
38mm ERA 😴
ah yes, the sinister passion. fukkin' shame that bike never saw the light of day.
before we get sidetracked, here's a classic episode of the Inside Line that interviews FTW, and the passion is a topic of discussion.
https://podcasts.apple.com/il/podcast/frank-the-welder-the-inside-line-…
speculation or fact? Love my ERA fork, only way 38mm would make sense to me it would be for an ebike specific fork.
The idea of the variable path was what he was going for, but not the high and low speed shaft movements doing different of axle paths. It was called VST. I’ve talked to Frank about this and even asked him about making one for me. He said the axle path almost looked like a football shape, it would move backwards up and then forward and you can pump it railroad track and just generate speed.
This is an old image and screen grab I found off of a forum from the early 2010s
One of my faves the 1998 Scott FX-DH/High Octance
All this talk of "variable axle path" reminds me of my old Magic Link coilair. A 190mm travel bike that pedals like a 140mm bike, geo would vary too. It slackened out when on the brakes, rear wheel moved truly rearward on bumps, it was a great bike for 2010. The 455mm chainstays made it faster than my DH bike too (455 was huge for that time and 26 inch wheels). Too bad it was a Kona so I cracked two of them.
Was the little secondary spring damped or free? (Is that a damping adjustment knob sticking out the front?)
Even if this discussion is not really either rumour or innovation, the last couple of pages are fascinating and one of the reasons I subscribe to the thread.
From PB IG Story; Best photo of the Commencal TMD. Looks like preload adjustment maybe? The mount says “KODST”
Blast from the past;
Things Alex Morgan was working on in 2001 (ish)
-Carbon Fiber DH Bikes
-High pivot DH Bikes (w idler)
-Dual shock high pivot DH bikes (variable axle path)
-Lugged design so he can make changes quickly
-29" wheels on DH bikes (2004 ish)
I think the spring was only there to return the link to the "normal" position, and the dial was preload to tune the crossover point. The idea was when descending the link moved backwards to make a longer travel/more progressive linkage, then when you started pedalling the chain tension would pull it forwards back in to the high/steep position. I think a bit like canyon shapeshifter but automatic
Might be a proof of concept, but combined with the plastic mount and zip ties I do wonder how effective that would be as a TMD....
Conspiracy theory: it's just filled with sand and works like a deadblow.