Dura Ace 7900/9000 crankset photographic comparison
Comments
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For the non Shimano riders, which is which?
[Edit: I like the look of the one on the left]
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The current 9000 is on the left and the previous generation 7900 on the right0
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Ok, I can confirm the back plate on the new 105 is indeed plastic. It's bonded, you can see the joint on the outer edge and the lip on the inner edge. A neat job.
The easy way to tell a plastic is with your tongue. The metal teeth are cold the plastic warm. Also you can clearly see the round spruce marks where it's been cut off from the mould.
As expected at the price point there is a lot less machining of the teeth profiles.
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There used to be a video on Youtube of the Dura Ace production line. I think they removed it when all production was moved to Malaysia
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Dura Ace, Ultegra, 105, Tiagra cranks are still 100% made in Japan.
Dura Ace wheels though are both made in Malaysia and Japan0 -
There used to be a video on Youtube of the Dura Ace production line. I think they removed it when all production was moved to Malaysia
Dura Ace, Ultegra, 105, Tiagra cranks are still 100% made in Japan.
Dura Ace wheels though are both made in Malaysia and Japan[/quote]
That's good to hear.
The 105 chainset has 'ME' stamped on it, is that a factory code ? I assumed it stood for Malaysia. The boxes of some of the Shimano XT components for my mountain bike say made in Malaysia.0 -
The two letter code shows when a part has been manufactured.
First letter is the year and second is the month.
M is 2014
E is May
You can find info about that here http://www.vintage-trek.com/component_dates.htm0 -
Ok, I can confirm the back plate on the new 105 is indeed plastic. It's bonded, you can see the joint on the outer edge and the lip on the inner edge. A neat job.
The easy way to tell a plastic is with your tongue. The metal teeth are cold the plastic warm. Also you can clearly see the round spruce marks where it's been cut off from the mould.
As expected at the price point there is a lot less machining of the teeth profiles.
That looks like an absolute nightmare to keep clean........0 -
How does the plastic 105 taste compared to the metal ultegra/DA?Insta: ATEnduranceCoaching
ABCC Cycling Coach0 -
bernithebiker wrote:That looks like an absolute nightmare to keep clean........
Not an issue in practice, unless you go muddy cyclo-crossing.0 -
How does the plastic 105 taste compared to the metal ultegra/DA?
Funnily enough they both taste the same because both appear to be painted 8)
I think the silver version might be difficult to keep clean. The finish on the black one is a course feeling matte, either anodized or some sort of epoxy paint baked on.The paint on the arms is parallel brushed to give a satin finish. Amazing attention to detail given the low price. Hard to believe they make any money on them if they are made in a high cost country like Japan.The complete groupset (including cables) is under £300 at the discounters.
In case anyone is wondering I don't actually own a pile of cranksets, just borrowed, apart from the Dura Ace 7900 one.
Something else I noticed looking through the 5800 groupset is the shift levers are plastic.Signs of cost cutting. The 5700 ones are metal. Ultegra are carbon reinforced plastic. The dérailleurs are almost identical to Ultegra though.0 -
Holy thread resurrection Batman... but I thought I'd add this picture of a sectioned 9000 crankset showing the hollow chainrings.
I must admit I've lost the will to live after seeing the new 9100 chainset....
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That 9100 chainset is fuglier than Ultegra!I'm sorry you don't believe in miracles0
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From what I can make out the 9000 crankset is compatible with the 9100 group set , hence the 9-series designation.0
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I wonder why the crank has to be so wide?'Performance analysis and Froome not being clean was a media driven story. I haven’t heard one guy in the peloton say a negative thing about Froome, and I haven’t heard a single person in the peloton suggest Froome isn’t clean.' TSP0
