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Kinda funny how tiny the bike looks when he is on a size medium, with how long bikes are getting these days.
Why exactly would a weldable 7075 alloy make carbon obsolete? It's a bit stronger than 7005, but just as stiff... Where you are stiffness limited, not strength limited, the frame will be just as heavy. It's not a magic bullet, nothing is really... Maybe beryllium 😂
Hmm a little lost on what you are saying as stiffness is not a material property but more of an assembly property? As a machinist 7075 always seemed like a pretty neat material to me, and it has a very high strength to weight ratio, plus it machines nicely, so this article from few years ago always sticks on the back of my head when the subject of frame materials comes up. https://newatlas.com/welding-aa7075-aluminum-alloy/58449/
I figured it was this exact article, yes.
I take it back on the strength front, as the ultimate and yield stress ratings for 7075 are 572 and 503 MPa while only 350 and 290 MPa for 7005. On the other hand this is of little use as fatigue strength rating is 159 MPa for 7075 vs. 150 MPa for 7005. So functionally, for cyclically loaded parts (bike parts), it's more or less the same, a benefit of ~6 %.
As for stiffness, I'm talking about the modulus of elasticity - usually 70 GPa for aluminium alloys, 140 GPa for steel and so on. That AND shape give you the actual stiffness of the structure. With a stronger material you can of course make the structure thinner and larger to gain back stiffness, but you're often times limited with dimensions (BB shell width, steerer tube diameter, etc.), so a stronger material that has the same modulus of elasticity might not be much of a benefit.
TL;DR: seeing a larger number in the ultimate tensile strength field is not always the golden ticket.
is that something new? looks like a sb165 built for slopestyle. I ride a yeti and i still have trouble telling some of their models apart.
Looks like an all new sb165 mullet to me. The area where the shock mounts to the downtube looks different to the sb160 and there isn’t the big yeti branding on the downtube. So not just a 160 with a new link. I think this is the same bike Richie was spotted on earlier on this page of the thread. Also not an old 165, it has the new cable routing and upper link that all the other models received.
Pretty sure it's just the old 165 with a 29er fork & wheel slapped on it. People have been doing it since release. Look at how slack it is (<63) - both the HTA & STA are really raked back.
Kind of amazed no one has noticed the aluminum prototype from Gee’s post
Can't speak to this frame or photo, but I do know that they're testing some mullet links (and/or rear triangles) with their local guys in CO on their SB160s
Jackson on that new-ish Maxxis tire from his IG story
it is not as the link is inside like the sb160, it's the new one and it's mullet
Interesting… I ran the geo numbers with just throwing a 27.5 wheel on the back of my 160 and a lot of the numbers were very close or exact as the new ibis hd6.
Yeah, looking at it again you're right (how the upper link connects to the seat tube is like the SB160 instead of the old 165). Although in the first photo, the linkage is raw silver, so maybe it's just a proto mullet link for a 160?
Did anyone watch the Yoshimura live video with Dak today? Any confirmation of new product?
This looks to be a new color for the Norco Sight Youth?
Yea, also, on this tire... On the Downtime Podcast he did a week or so ago he said 'tire selection' was perfect for his destruction of the the MSA world cup. He had this prototype on the front for that race. The more land offered by the larger knobs works well on MSA rock. ... The Argotal competitor will be very popular with Maxxis riders this season.
Yes, clipless pedal being developed
it could be but give it a few months and the new sb165 will come out
About 10 pages back (I think) there’s some more info on it.
A photo from Dyfi of a full build 👍
In that Instagram image Jackson also seems to be using a Oneup cockpit, rather than Burgtec. Oneup and Santa Cruz are both Pon brands, so makes sense.
Also looks like new unreleased e13 rims ...
new zerode DH bike is official
https://www.vitalmtb.com/forums/hub/2024-team-rumors?page=116#comment-4…
New Norco sight and optic all have this two paint. Some combos better than others…
Let’s see how it pans out cotton.
I hope they make him some custom "Dak Attack" stems.
A SPD compatible platform, or a new clipless system?