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That documented instagram interaction was quite eye opening. All products can break, but how 5dev handled it was very poor. I will choose to support other companies.
Yeah, the little I can read of the texts is pretty lame. Even if it is not a warranty failure, there are ways you can come out looking good, and ways you can come out looking horrible (see pole, gt, etc). Why choose to be the bad guy? ESPECIALLY on a super niche product like this that entirely relies on customer trust and loyalty to get new sales.
 
Is that a bad thing? Cause Profiles look amazing.
Wouldn't be a bad thing if it was true... but its not. About the only thing they have in common is being welded. ee wings are a resurrection of the 90's steel sweet wings cranks without the strange spindle connection.
And Profile pretty much invented tubular cranks in 1979….awesome for laying down power because they are stiff and light. But you only pedal a bmx bike for a few seconds and them you pump and all of that time is spent on a smooth surface. The vibration dampening properties of either steel or Ti is used up in overcoming what a tubular design introduces and even less so a shorter arm that soo many MTB’s need to avoid pedal strike. So it really depends on what you are riding…..will the average dentist who is gonna be buying Ee wings, 5dev Ti or Boone Ti cranks notice a difference when they are out on their Yeti? Probably not and certainly no one riding an E-bike is gonna feel any different. But I can guarantee that anyone riding a hardtail someplace rocky would and yet that isn’t the target demographic for any company making Ti parts
 
Seems like drama on both ends.
I think I agree, but isn't that when you should take the high road and say, please send us the crank back, we will pay for shipping and would love to take a look at it in our shop to figure out if there is anything wrong with yours in particular or our manufacturing process... but I agree there was drama on both side. But that's usually when I say I don't wanna get involved with any of the parts...
 
Invented? No. Made them popular on bmx in the 80s, sure. But comparing the ee/sweet wings to them is like saying a new xtr crank is obviously just a copy of a grafton... yeahhh no.
Not really tubular cranks have distinct design and performance characteristics that are all but identical regardless of the material unlike cast or carved (machined) cranks
 
While the 5Dev crank having an unexpected rapid disassembly bothers me - especially under the mundane riding circumstances, I do realize that stuff breaks.

That being said, because of the way they conducted business after the incident, 5Dev will never get a penny from me and I'm one of the dudes right smack in their target demographic wheelhouse.
 
Discussion starter · #76 ·
If you're surprised by that then don't go looking at aerospace parts. It's routine for parts to occupy only 10% of the rough stock. Just off the top of my head, I know a couple of parts I've done only used 4% of the rough stock. It's a moot point anyway though because it all gets recycled
I lost around 95% of the material machining 6/4 Ti into cups for hip implants. I still have tons of 6/4 Sandvik round bar stock.
 
I lost around 95% of the material machining 6/4 Ti into cups for hip implants. I still have tons of 6/4 Sandvik round bar stock.
Please to be sending me some.

:p

I'm surprised they would use grade 5 for medical. I thought it had to be pure for rejection reasons. googles

I'm learning lost of things in this thread at least hahaha.
 
Discussion starter · #78 ·
Please to be sending me some.

:p

I'm surprised they would use grade 5 for medical. I thought it had to be pure for rejection reasons. googles

I'm learning lost of things in this thread at least hahaha.
Sandvik calls it "medical grade". Anything that's medical Ti is 6/4. Anything else is stainless or cobalt chrome. I have several tubs of CoCr looking for a recycler.
 
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