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not only a patent circumvention thing.
Tried to count on the picture, seems like 18 and 13t sprockets.
Is it because the leverage ratio/torque with two small sprockets?
I found this old article, that say 10s chains from 2007 break at around 10,5kN, which is a lot. But then again, does this force actually happen in sprint of sat 1800w? https://bicycles.stackexchange.com/questions/83157/what-is-the-maximum-force-that-an-average-bicycle-chain-sprocket-can-withstand
And now the internet told me this:
https://calcengines.com/shaft-power-torque-speed-calculator/?P=1800&Pu=W&T=&Tu=Nm&n=120&eta=95&r=50&ru=mm&sf=1.5&solve=auto
By The Internets calculations (and my inputs) the force at a 13t (Ø50mm) sprocket is around 2400N when producing 1800w at 140rpm. This means the chain can take over 4 times the power. And i really don't understand the need for two chains.
That's awesome. Thanks for sharing that additional color to my commentary. That bike is SO sick and I totally forgot about it when I was thinking of examples of eebs with the motor removed.
In my comments, I should have added: YMMV.
But we're not all Alden Pate.
This feels a bit like PR speak to defend half of the products they offer, which of course they should do. But couldn’t the increased stiffness suit other riders better, for example heavier or more aggressive riders?
I use my Crafty analog and as an e-bike, absolutely love it both ways.
I was going to say, it looks like an ebike, not a meatbike
Calculate with half of that rpm (no downhiller sprints at such a high rpm) the safety factor is not that big anymore, but I would guess one chain would be enough still
Yeah - plus shock looks to have a piggy back and it sorta looks like he is pushing "walk mode" with his left thumb to hike his bike up the hill.
On the one hand, yes, and also no.
Yes, totally, optimal stiffness for any bicycle chassis component is highly contingent on rider weight, riding style, and terrain. So I imagine a bike that's "too stiff" on average will suit some riders at the margins and a bike that's "too flexy" on average will suit others. This is actually a huge gripe I have with the bike industry in general, because products are almost always advertised as a one-size-fits-all solution, and they aren't/don't/can't.
On the other hand, I don't tend to think Kiran is bullshitting me, because I've known him for a while, and I say this in love, but he would get a lot farther in the business world by being less honest and less maniacally detail-oriented. There are situations when everyone else on a product team can be satisfied with their result and Kiran wants to do "another run" or "another day" or "another test." I respect the hell out of Kiran because he really believes what he's saying, and he's gone to bat for his ideas over and over and over again. He also thinks about what he's going to say before opening his mouth, a habit I could learn from.
So when he says the old Nomad downtube was too stiff and the new downtube isn't, I tend to believe him and I think he really means it. And when he talks about test riding ebikes with the motors taken out and saying they rode like a block of wood, I tend to believe that, too.
To combine those two thoughts: I trust that Kiran means what he says, but I also recognize that his impressions and preferences won't translate to all riders everywhere. He's one data point. But he's a pretty big and heavy data point (literally), and he rides really hard, so if he's telling me something is too stiff, that's noteworthy.
Reflecting on your questions inspired a hypothetical question and a poll:
Would you rather have every chassis component on your bike (fork, frame, bars, wheels, cranks, etc) be too slighty too flexy or slightly too stiff, and why?
https://www.vitalmtb.com/forums/hub/would-you-rather-have-too-much-engineered-compliance-or-too-little
Maybe this will clear a few things up
I'm also going to push back. One of the biggest problems with ebikes is they are way too stiff in the front triangle. I'd say external batteries that allow for traditional tubing have the potential to ride much better, but let's be honest the most important priority for how an ebike handles is how good it looks.
Just got the message from UCI that ALL electronics are banned in DH. I THINK they just mean Suspension, But if it's Derailleurs too...Wow. Bruni's response was.."Well, FK!".
Consider the source?
No I did not..It got forwarded to me..Is it BS??
I'll bet a crab link it's fake
the comment section proves humanity is doomed.
Got to take a look at Alyana Van Horn‘s race bike for this season…
That page is on a cease and desist speed run lmao
Thanks for the info guys, I had no idea. I hope they have a painfully death..I hate BS sites.
It’s a satire page. Once you’re aware it’s great entertainment.
Yup. The price isn’t “too steep” if Specialized is marketing and easily selling these to people with appropriately deep pockets. It’s entirely likely they don’t have much of a goal to make it affordable for more people if they’re not producing the quantity and can still sell out of them.
Pricing people out of the market creates exclusivity, which is the cool factor among the Ferrari and Rolex crowd.
As soon as Roskopp became bff’s and neighbors with Sinyard and joined Spesh as some kind of inside/outside consultant, I kinda had a thought there’d be some note sharing. Don’t remember if Roskopp has a hand in SC anymore but I’d imagine he still has tons of influence.
Rob has been completely out for a few years now
That's 100% a parody account (NPC== Non Player Character)
I dunno that’s the hand position I use to push my meat bike up a hill
Then you didn't ride your actual mountain bike the same way a lot of us do.
It's a vastly different sport. I have both if that matters.
1st paragraph: agree
2nd: No opinion
3rd: Very interesting. Of all the parts of a bike, I would have bet money that the stiffness of a downtube would be the least important. Given he's a professional tester I want to believe it, but wouldn't the downtube basically be in tension all of the time? The top tube stiffness seems like it would be WAY more influential in the feel of a bike. IDK how downtube stiffness would be a huge factor if its always in tension.
Too flexy or too stiff? Too stiff every single time. The first thought my brain goes to is flexy wheels and tires. Nothing kills the vibe like being in a pretty G'd out compression and your bike flexes you into wanting to steer off the trail into a pile of sharp sticks. I'll live with a chatter-y bike over living with a pool noodle bike.
I always called the lower link on my Norco Range the 'scrotum' that would bang into things - but this - this needs a name.
Looks like the carbon bit will extend outside of that 'special area' and be exposed when suspension is active.
What a very special area.
The Demo link does extend outside the static frame, which in part is probably why they didn't want to construct that much more mass to cover it all. Also, if something immovable hits that area, you are already fuxxed, covered or not.
I don't doubt they didn't cover it because of 'aesthetics' or online commenters. So congrats to all of us, I guess?
I‘d take more flex all the time compared to too stiff. But, I tend to prefer more natural, rooty, rocky trails compared to cleaner bikepark style trails, however, I am not crazy heavy and middle aged with almost 30 mtb seasons on my joints. Flex means comfort, to some extent. And comfort means no pain, too stiff means less riding long term. Injuries and wear are (unfortunately for many) a factor long term.
The last couple percent of speed don‘t mean much to me, I am riding just for fun. (I am an experienced rider, but also have other responsibilities and priorities compared to my more radical mtb phases)
I totally understand that above some level, you want something less vague. And there‘s a big difference, if you have to do one all out run a day or continue riding, until you‘re exhausted to the bones.
@TEAMROBOT
The moto guys realized a long time ago that some chassis flex is a good thing.. Especially while cornering.. Suspension doesn't always work as well leaned over..
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