Stem Testing Round 1, 19 Stems
Moderator: robbosmans
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the test shows that the Vibe is clearly a super stiff stem. It just suffers in the S:W ratio because of the extra mass it has.
Kittel's stem is a modified Pro Vibe stem (maybe the PLT Stem with modified steerer clamp diameter) made specifically for Giant the 1-1/4" steerer with a more standard 4 bolt face plate, as opposed to the puzzle system on the standard vibe.
Kittel's stem is a modified Pro Vibe stem (maybe the PLT Stem with modified steerer clamp diameter) made specifically for Giant the 1-1/4" steerer with a more standard 4 bolt face plate, as opposed to the puzzle system on the standard vibe.
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- maverick_1
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@madcow,
Would like to suggest a test on Ritchey C260 "Superlogic" full carbon stem.
Would like to suggest a test on Ritchey C260 "Superlogic" full carbon stem.
The Kalloy Uno 7 would also be an interesting candidate, it is so popular here that it has its own thread. I wouldn't be surprised if it tested very similar to the New Ultimate (since it looks a lot like it), it would just smash it in a stiffness/weight/price ranking
Interesting note about the syntace f119 not being offered in 110mm as I have three of them as well as a few 105mm 's.
"Any intelligent fool can make things bigger, more complex, and more violent. It takes a touch of genius -- and a lot of courage -- to move in the opposite direction."
madcow wrote:...If anyone has suggestions for other stems they'd like to see tested in round 2 please feel free to mention them...
This sounds like the perfect opportunity to prove - with (ostensibly) scientific objectivity - whether or not all the scare-mongering about so-called "low quality" Chinese replica carbon stems has any scientifically-proven basis.
Is there any reason why your tests don't include a single "knock-off" Chinese carbon stem? Of course, there is no inherent anti-bias against them on the tester's part! And there's certainly no conflict of interest in regard to any undisclosed relationship between an authorized dealer and the makers of some of the name-brand stems on test! Perish the thought! Right?
In my opinion, any test claiming to be 100% unbiased would be remiss if they didn't include any "placebos" in their test.
I vote for including in the next round some replica Chinese carbon stems for side-by-side comparisons to their "high-quality" name-brand counterparts.
I'll even volunteer my services to help you source some of the reverse-engineered stems:
And so as not to offend any of the goody-two-shoes Junior G-Men on the Homeland Security's IPR-Enforcement Task Force lurking amongst us:
Oh! I almost forgot about handlebars:
- Frankie - B
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Great test! thanks Jason.
If you want to see 'meh' content of me and my bike you can follow my life in pictures here!'Tape was made to wrap your GF's gifts, NOT hold a freakin tire on.'
Lighter aluminum stems are more flexible than heavier ones. Nothing new there.
They deflect up to 5mm in your test. How is that data useful to us? Is 5mm of flex something we should care about? Does this show durability to be a concern with the lighter stems?
They deflect up to 5mm in your test. How is that data useful to us? Is 5mm of flex something we should care about? Does this show durability to be a concern with the lighter stems?
F45 wrote:They deflect up to 5mm in your test. How is that data useful to us? Is 5mm of flex something we should care about? Does this show durability to be a concern with the lighter stems?
You decide!
- ultimobici
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velonista wrote:madcow wrote:...If anyone has suggestions for other stems they'd like to see tested in round 2 please feel free to mention them...
This sounds like the perfect opportunity to prove - with (ostensibly) scientific objectivity - whether or not all the scare-mongering about so-called "low quality" Chinese replica carbon stems has any scientifically-proven basis.
Is there any reason why your tests don't include a single "knock-off" Chinese carbon stem? Of course, there is no inherent anti-bias against them on the tester's part! And there's certainly no conflict of interest in regard to any undisclosed relationship between an authorized dealer and the makers of some of the name-brand stems on test! Perish the thought! Right?
In my opinion, any test claiming to be 100% unbiased would be remiss if they didn't include any "placebos" in their test.
I vote for including in the next round some replica Chinese carbon stems for side-by-side comparisons to their "high-quality" name-brand counterparts.
I'll even volunteer my services to help you source some of the reverse-engineered stems:
And so as not to offend any of the goody-two-shoes Junior G-Men on the Homeland Security's IPR-Enforcement Task Force lurking amongst us:
Oh! I almost forgot about handlebars:
Simple really. Reverse Engineered is not what they are. Fake or knock-off, take your pick. Testing them would undermine their position as a legitimate dealer. Can you imagine the effect of an authorised dealer including fake versions of their supplier's product?
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ultimobici wrote:...Fake or knock-off, take your pick...
I pick "placebo". Because - like their pharmaceutical counterparts - they defy scientific explanation, but there's no denying they work just as effectively as anything you care to compare them to.
ultimobici wrote:...Can you imagine the effect of an authorised dealer including fake versions of their supplier's product?...
I guess you missed this:
velonista wrote:...
And so as not to offend any of the goody-two-shoes Junior G-Men on the Homeland Security's IPR-Enforcement Task Force lurking amongst us:
...
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velonista wrote:
Is there any reason why your tests don't include a single "knock-off" Chinese carbon stem?
I'm guessing it's because fair wheel bikes doesn't stock or sell them? FWB is a store not Tour magazine. They really don't have any obligation to test every single item on the planet, especially if it encourages you to purchase a product from another vendor.
Having said that, I am disappointed there's no testing of Ritchey wcs 4 axis alloy version to see if the god awful faceplate design of the c260 has any merit on actually improving stiffness.
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