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Sneak Peek: Chris Conroy's carbon Yeti SB66 tester

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Sneak Peek: Chris Conroy's carbon Yeti SB66 tester

Old 10-21-11, 12:19 PM
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Sneak Peek: Chris Conroy's carbon Yeti SB66 tester



Dang!

That is all for now.
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Old 10-21-11, 12:33 PM
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Old 10-21-11, 12:54 PM
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I like the iteration of the logo, positive/negative space thing.

But, another fragile plastic bike?
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Old 10-21-11, 01:01 PM
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D: Who's Chris Conroy? And why are you Tom?
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Old 10-21-11, 01:04 PM
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Old 10-21-11, 01:34 PM
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I don't get that last post ed. What is that trying to show? I see the blue mark, but what's the point of it?
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Old 10-21-11, 02:26 PM
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Well...for me it's animated. It's a pretty freakin' crazy how it all works. I need to read about it to see how it all works, but it looks impressively complicated.
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Old 10-21-11, 02:28 PM
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Vids in on this page give and overview:

https://www.yeticycles.com/#/bikes/SB66/5/

To quote: "At the beginning of the travel, the eccentric link is rotating counterclockwise, guiding the lower pivot rearward. This rotation, coupled with the rearward wheel-path, stabilizes chain forces and creates optimum pedalling platform. Switch Inflection Point: About 100mm into the travel, the eccentric link starts to rotate in the opposite direction. As the link rotates forward, the dCSL (change - - or delta - - in chainstay length) drops off, allowing the suspension to work independently of chain force."

Basically, what it does is the first 2/3 of the travel counteracts pedalling forces, while allowing it to stay active while pedalling. The idea is to retain small-bump sensitivity by not having to have a heavily-damped compression circuit in the shock. Then, when you're getting into the outer third of your travel, it 'disengages' that chainstay growth lets the suspension carry its smooth mid-stroke feel all the way to the limit of travel.


Originally Posted by ed View Post
D: Who's Chris Conroy? And why are you Tom?
Chris Conroy is the President of Yeti and an all-'round great guy. As he says, "I'm just a bike goof like the rest of them."

Tom said 'twas the season for us mods to don our Halloween avatars. I thought he had it over the wolfman by a long shot .
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Old 10-21-11, 02:32 PM
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Old 10-21-11, 02:35 PM
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Originally Posted by dminor View Post
Vids in on this page give and overview:

https://www.yeticycles.com/#/bikes/SB66/5/

To quote: "At the beginning of the travel, the eccentric link is rotating counterclockwise, guiding the lower pivot rearward. This rotation, coupled with the rearward wheel-path, stabilizes chain forces and creates optimum pedalling platform. Switch Inflection Point: About 100mm into the travel, the eccentric link starts to rotate in the opposite direction. As the link rotates forward, the dCSL (change - - or delta - - in chainstay length) drops off, allowing the suspension to work independently of chain force."
Sounds a lot like a VPP axle path.
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Old 10-21-11, 02:53 PM
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^^ It does - - or the DW link. All different patent paths to a similar objective. Pretty tidy package to accomplish it too, with an eccentric pivot and one swing-link.


Another look at how it works:

https://brule.pinkbike.com/blog/Yeti-...irst-Look.html

(two vids at bottom of page)
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Old 10-21-11, 04:57 PM
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I liked the animation. I am impressed with anything that moves more than me.
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Old 10-21-11, 06:23 PM
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Does Yeti need a non racing person to sponsor?
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Old 10-21-11, 08:43 PM
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That picture Ed posted is oddly hypnotizing.

"You are getting sleepy, very sleepy. When I count to five and clap my hands, you will forget about all financial responsibility and buy this bike."
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Old 10-21-11, 11:42 PM
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Don't get me wrong, I say this as someone who lusts big time in his heart after this bike:

Meh.

After my last two frames have turned out to be lemons for one reason or another, I'm going to give this a good long while to make sure the bugs are worked out... I want to see how the first gen. buyers/riders are getting along with their frames a year in.
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Old 10-22-11, 09:19 AM
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Originally Posted by scrublover View Post
Don't get me wrong, I say this as someone who lusts big time in his heart after this bike:

Meh.
Your self control is admirable. I'm in the same boat, though - I posted in another thread about how the numbers of the SB66 are nearly identical to my 05 SX trail. In fact the SB has longer CS and higher BB than the Speckleized, so it better weigh next to nothing and climb like a rocket in order for me to justify dropping the cash on this new frame rather than some enve rims or something.


Originally Posted by scrublover View Post
After my last two frames have turned out to be lemons for one reason or another, I'm going to give this a good long while to make sure the bugs are worked out... I want to see how the first gen. buyers/riders are getting along with their frames a year in.
Was one of those the Spit? I must have missed something. What happened with it?
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Old 10-22-11, 03:02 PM
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Seems like everything has a higher BB than a "Speckleized" though.
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Old 10-22-11, 03:09 PM
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After reading about folks having some bushing/frame wear issues, decided to take a peak into mine. Figure it had a year on it, so...

Everything looked good. Stuck new bushings in anyhow, after cleaning things up. Clean bolts, blue Loctite, torqued to Banshee's suggested specs. Two months later, started getting slop in the back. Pull it all apart and discover a bit of wear on the linkage. Re-do the service, new bushing again, torqued to 3nm (suggested was 5nm - though that number keeps dropping, and is now at "finger tight plus a quarter turn" whatever that means.) and figured all would be good. Nope. That got about two months as well, before getting play again.

I don't want to **** around with it, having to figure out the *exact* torque needed to not develop play, but not have the bushings wear into the frame. IMO, it's a neat idea for the frame, with poor implementation. I like to tweak and work on my bikes, a lot, but not at the expense of riding, and not on something I feel is a design flaw or a tolerance issue from the factory.

Sold it for a fair bit of a hit (possible issue with links to threads fully disclosed) and am now really digging the Trance-X frame I swapped my parts to.

hardtail
Trance-X
Reign-X

is making for a very nice three bike stable. The RX is freakin' awesome. Burly enough for resort and out to Moab use (for what I ride at leas) but still light enough and pedalable enough to hit up local trail stuff. The Devinci Frantik it replaced was fun at lifts, but not much else - too much a sluggish, long wheelbased pig.

The TX makes a nice "daily driver" bike for the majority of my trail areas. Beefy enough to take the constant technical bits around here, pedals fantastically, and I don't have any worries about the pivots and bearings. 13.5" bb with amy Revelation @150mm, and the HTA is hovering about 67.5*. My only real beef is no way to mount a full chain guide for a single ring setup (press-fit bb) and the front end is high - very tall headtube for a size small frame. Just stuck on a Sunline flat bar, and a -5* stem, no top above the upper bearing preaload ring, and all that is doing the trick there. Pivot makes a clamp around the BB shell ISCG mount for their bikes - am looking into that to see if it could work -looks like it will with a bit of Dremel work on the part, just have to get ahold of one. My XCX/bashring combo is working well, and is quiet, but I'd rather run something full. Really digging the Straitline Silent guide ont he RX.

I see the SB66 as a one-bike thing - if you could only have one bike for everything, what would it be? Something like it, with a thru-axle rear setup, 160mm fork would rock. Heavy and light wheelsets. Dropper post, but regular post to stick in when hitting lifts or something. Size-wise, though, it's a bit long for my tastes, which is probably a good thing. When I was shopping, Jenson had the small sizes in the lime green in stock - came reeeeeeeaaaaally close to going for it.

Came to my senses, realized I really, really liked the way Maestro pedaled. Found the Trance-X4 demo bike for less than half what the SB66 frame would have run me. Full warranty. Came out fo the box looking like it had barely been touched. Swapped all my parts, gave the stock build kit to my poor student brother in-law to build something up with.

Wow. Long winded. At home with a nasty chest cold, so there ya go.
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Old 10-22-11, 08:12 PM
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I worry about the OS edge of the eccentric rotary girder there contacting the IS of the frame and causing some wallering. That mixed with 01's comment about the SX...why bother with all the added complexity? I get some minimal feedback from the Parker as I did with the XLT, but not enough to warrant a $4k bike...it's plush enough for me.
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Old 10-22-11, 08:15 PM
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Kinda looks like the cam is on a couple of ball bearings though...right?
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Old 10-23-11, 11:26 AM
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Originally Posted by ed View Post
Kinda looks like the cam is on a couple of ball bearings though...right?
Yep. I can't imagine doing that design with anything but bearings.

I'd think with some big ass bearing in there, and the way the rear ned is built up it's got to be a very stiff bike.

May not be for me, but if a chance presents to ride one, I'll sure as hell take it.
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Old 10-23-11, 12:38 PM
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What year is your SX, Gastro?
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Old 10-23-11, 01:17 PM
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Originally Posted by ed View Post
What year is your SX, Gastro?
Originally Posted by cryptid01 View Post
05 SX trail.
Same frame as the rest of the 05-07 Enduros (not 05 Enduro Comp nor 06+ SXT)

Size L

SXT SB66

TOP TUBE 24.5" 25.3"

CHAINSTAY 16.7" 17.0"

BB HEIGHT 13.7/14.2" 13.8"

WHEELBASE 45.5" 46.6"

It makes me chuckle to look at these numbers and then read the marketing fluff about the "new breed" of long, slack AM bikes like the SB.

Thanks for the info on the spitfire, scrub. I have a couple friends with spits but I havent heard anything about those issues. I guess I should be more diligent about checking the rampant pivots, but as a niche bike, its seen limited use, particularly since I moved up here far away from the land of flowy trails and jumps.

The SB does indeed have ball bearings that run on some largeish pivot shafts - 17-18 mm diameter iirc. There has already been mention on emptybrr of a bad batch of bearings on the initial production run though. Gives more weight to the "wait til the kinks get worked out" philosophy.
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Old 10-23-11, 01:25 PM
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I have to not be so lazy when I do this crap on my phone.
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Old 10-23-11, 07:18 PM
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Originally Posted by cryptid01 View Post
Same frame as the rest of the 05-07 Enduros (not 05 Enduro Comp nor 06+ SXT)

Size L

SXT SB66

TOP TUBE 24.5" 25.3"

CHAINSTAY 16.7" 17.0"

BB HEIGHT 13.7/14.2" 13.8"

WHEELBASE 45.5" 46.6"

It makes me chuckle to look at these numbers and then read the marketing fluff about the "new breed" of long, slack AM bikes like the SB.

Yeah, but what about the reach and stack? I bet these bikes have different hta, sta so they'll feel different.
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