Will a bolt wallow aluminum faster than a roll pin wallow titanium?Doesn't that just show that the stainless grade you're using is more ductile than the aluminum one?
Will a bolt wallow aluminum faster than a roll pin wallow titanium?Doesn't that just show that the stainless grade you're using is more ductile than the aluminum one?
How long is a piece of string?Will a bolt wallow aluminum faster than a roll pin wallow titanium?
Depends on the type....How long is a piece of string?
To elaborate more, your stainless didn't break because it was ductile enough (and thin enough) to bend. The thicker aluminum was too strong and stiff to bend, so it split open. Thin aluminum, maybe annealed or with a WEAKER temper, would act more or less like the steel. Tearing apart like the aluminum did isn't necessarily related to wallowing - it just shows how much the material can stretch/bend.Will a bolt wallow aluminum faster than a roll pin wallow titanium?
Tethrd claims grade 9 Ti alloy (550MPa) So more in the neighborhood of twice as thick. But there are still many more factors involved...Aluminium Alloys vs Titanium Alloys - Comparison - Pros and Cons | Material Properties
Aluminium and its alloys are used widely in aerospace, automotive, architectural, lithographic, packaging, electrical and electronic applications. Titanium alloys have very high corrosion resistance and strength-to-density ratio, the highest of any metallic element.material-properties.org
Yield Strength
Yield strength of 6061 aluminium alloy depends greatly on the temper of the material, but for T6 temper it is about 240 MPa.
Yield strength of 2024 aluminium alloy depends greatly on the temper of the material, but it is about 300 MPa.
Yield strength of Ti-6Al-4V – Grade 5 titanium alloy is about 1100 MPa.
Yield strength of commercially pure titanium – Grade 2 is about 300 MPa.
So the 6061 aluminum would need to be 4.5 times as thick as Ti-6AL-4V titanium to have the same yield strength - the stress at which the material starts to plasticly deform.
Tethrd claims grade 9 Ti alloy (550MPa) So more in the neighborhood of twice as thick. But there are still many more factors involved...
The real question is probably if the pins can loosen in the AL steps over time.
would love to get feedback from tethrd on how far down these types of paths they went. Or if they just pulled 900lbs a couple times in a uniform fashion and called it good.
Nope....but they keep you from having to eat them through a straw.........
Then again warm and fuzzy feelings don't pay the grocery bills.
I understand all of the continued concern of the roll pin/glue in this thread but just wondering if anyone has managed to break a stick to the point of failure yet? Or anyone willing to do their own at home torture test?
Glue failing.... yes
Roll pin failing....no
Usually math keeps me personally from eating through a straw, but calculate darn near everything twice (once for the risk, and second since I'm from Kentucky).Nope....but they keep you from having to eat them through a straw....
Obviously to this point I understand the glue fail, but is there any chance that the "roll pins will fail" camp could be wrong, and maybe they wont? I'm just looking for a total failure of stick before panicking and reselling them. Hoping I am not the first one it happens to, no offense...
The roll pin wasn’t designed to be the primary method of support for the step. I would be concerned since they only warranty the sticks for a year. Once that year is over you are on your own.
Does anyone else warranty their climbing sticks for a period of longer than a year? Genuinely curious. I googled and 1 year factory warranty seems pretty standard from all the other big brands (hawk, XOP, etc.) LWCG has lifetime on all nonwearable parts, but gives no date (at least on website) for the warranty. Beast gear has no warranty that I can see period.
Beast has a lifetime warranty, timber ninja has a 3 year warranty