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30 mm of chainstay (BB to rear axle) growth or 30 mm of rearward axle path?
I would assume they are considering those the same thing..
On PB in kaz’s randoms, we have confirmation of the “brilliant” new spider aluminum analog in china retail only.
Very very intriguing business play by intense
Did they restructure and bring in serious market analytics?
Also: nice work Jeff and prosice looks stellar
my 2 cents after spending some time on the bike is that I really want to spend more time on the bike. A couple anecdotes here:
I was surprised at how well it pedalled and the lack of heft that I was expecting after looking at it.
After giving it back for a month I had to film on it with no time to get familiar again. First trail was a rapid North Van classic that I have ridden a bunch and I was immediately sending it. It was extremely poppy while still being planted, able to pull for all of the doubles and let it do it's thing in the rough stuff.
https://youtu.be/8I53wIUXaFo?si=NpwyQJ-KB3auebsP&t=13 at 0:13 seconds in the launch video I was hucking a nice double to flat and barely feeling a thing, coming in way too fast to the next unsupported corner and every take I was able to find the traction needed to carry my momentum into and out of the corner, always as a pleasant surprise.
I am waiting for my own production version of the bike to arrive and then I'll be doing a longer video on it, but I'm really just excited to get more time on it. It's an intriguing ride and I don't think I really found the limits yet.
Zink Zader, dual 27.5, kinda funny geo. They're saying large is for 6'+ only, yet has a 476mm reach and 429mm CS
I think you meant “kind of FUN geometry”.
As a person who gets more than 100 bike park days a year, this is way more in line with how parkrats of all ages enjoy riding… ymmv
I’m a skeptic too. I can’t intuit a 6-bar instant center off the top of my head, but even just looking at how the upper rocker link will move there would have to be something seriously dramatic going on with the lower links to get 30mm out of the flex stay.
A friend of mine got a bit of an extended test on the Zink trail bike and loved it.. Maybe not a bike for me, but I'm thinking my son would be all over it. Different strokes for different folks...
fully deets on Zink Zader - https://www.vitalmtb.com/news/press-release/zink-bikes-introduces-zader…
+1
Can someone please explain if Sram did anything special to achieve this?
Or was this all just a bait and switch.
I believe the lock ring flange actually sits "in" the lower cluster and behind the 10T and/or 12T cog. Jump to ~2:08.
It's a Transmission only cassette - will only work with a full mount derailleur, not a hanger.
Large Geo looks absolutely perfect for somebody. Who’s 6 feet tall again this isn’t for somebody who wants to ride blue flow trails. It’s a purpose build jump bike so the shorter reach in short change stays are probably perfect one in the air.
I think Salsa was also superboost and has gone back to 148.
Does the chainstay kick out though? Like the chainstay has this weird link to the idler right? Does that link push the chianstay out to affect how the rear flex stay flexes and thus creates more growth? Like is it a reverse flex stay? Where instead of flexing open, the rear triangle flexes closed? Meaning the angle at the dropout gets more acute? IDK, I don't really understand it. And the photos on the website are terrible, you can barely see the thing. Look at this cool photo of a bush with our magical suspension hiding in the background while we talk about the brake mount thats 100% not even pictured.
Maybe the chainstay flexes closed, and then open? If that idler link kicks out faster than the rocker link kicks up? IDK I'd poke at it in cad but the godawful photos...I don't even want to try. Also not a huge fan of DW bikes to begin with so... skeptical AF.
This looks like a sick bike for someone who is super sendy and very talented.
To add to the other answers, the change relative to previous cassettes is that the sprockets were shifted outboard so that (I believe) the smallest one sits off the driver. This is also the reason for the loss of cross-compatibility (without modification, anyway) with original Eagle.
I did some napkin math to see what things look like. Assumptions are:
You end up with, sin (15 degrees)*170mm, which results in 4.4cm rearward movement. So if my shitty math gets to 4.4cm, I find it reasonable that the frame has 3cm rearward movement
Yes, I agree with your math.
What I'm saying is that 30mm of rearward movement at the sag point seems like way too much. For instance, if there was 44mm of total rearward movement (which is a ton for any 170mm bike), and for simplicity sake the axle path was a straight line sloping back, that would still only be 13.2mm of rearward movement (aka chainstay growth) at the sag point.
New SC Tallboy dropping May 19. 4bar, more travel, lighter. Seems like to align with 5010.
As I mentioned before, the RMU has co-rotating links at the BB (thus Orion) vs. counter-rotating links at the BB in the case of a DW6 bike. I'd imagine co-rotating should pull everything a bit more forwards through the travel as there's generally less "kick-out". The height of everything can play a role, if the chainstay has to rotate back and up. The bike can also have most of the rearward axle travel up to the sag point so making things a bit more hidden.
I agree it's a bit weird intuitively, though I guess it's not impossible. I don't see a reason they would claim something which is somewhat easy to verify if it's not true.
I do hope the RMU Nighttrain comes to Europe because I tried ordering one, as it ticks all the boxes for me even though it has some downsides, and the $2.5k frame came out to $5.7k with the taxes, duties and delivery included.
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