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Off the saddle
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Discussion Starter · #1 ·
Pics for verification in case anyone was thinking I was fluffing the numbers for whatever reason.

Out of the package M970 11-34


With the replacement 17T-20T Yumeya titanium cogs (YM-CS81)
 

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Off the saddle
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Discussion Starter · #5 ·
nikoli8 said:
I see people took Jensons sale as a great upgrade time.
Indeed. The only things I purchased were the chain and the 17/20T cog replacement. Not the greatest or cheapest route but some weight savings nonetheless.
 

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gone for a bike ride
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Yumeya 17-20t cog ugrade

nice :)

your weights match mine too - but argh! your 17-20 cost a fraction what i paid back in Feb :madman: :D

<a href="https://www.flickr.com/photos/culturesponge/4324592212/" title="Shimano XTR M970 11-34 Yumeya 17-20 cassette cogs - 01.02.10 #7693 v2 by culturesponge, on Flickr"><img src="https://farm3.static.flickr.com/2716/4324592212_0e9dcd4d80.jpg" width="358" height="500" alt="Shimano XTR M970 11-34 Yumeya 17-20 cassette cogs - 01.02.10 #7693 v2" /></a>
Yumeya!

<a href="https://www.flickr.com/photos/culturesponge/4324552996/" title="Shimano XTR M970 11-34 cassette 17-20t cogs - 01.02.10 #7682 v2 by culturesponge, on Flickr"><img src="https://farm5.static.flickr.com/4058/4324552996_962c817f54.jpg" width="360" height="500" alt="Shimano XTR M970 11-34 cassette 17-20t cogs - 01.02.10 #7682 v2" /></a>
slightly worn original (should be 50g on the nose)

<a href="https://www.flickr.com/photos/culturesponge/4324469968/" title="Shimano XTR M970 11-34 + Yumeya 17-20 cassette cogs - 01.02.10 #7709 v2 by culturesponge, on Flickr"><img src="https://farm3.static.flickr.com/2736/4324469968_1096b4da06.jpg" width="375" height="500" alt="Shimano XTR M970 11-34 + Yumeya 17-20 cassette cogs - 01.02.10 #7709 v2" /></a>
:thumbsup:
 

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Doesntplaywellwithmorons!
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It would be nice if Recon offered a blue annodized spider/spacer setup.
 

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I bought the Yumeya Cogset, chain and derailler plates from JensonUSA as well. I should have weighed mine but didn't bother, but thanks for the confirmation on the weight savings. I already have the white pulleys, crankarm bolt, shifter barrel adjusters, FD Bolt & RD Bolt Kits, which I got from CRC a few months ago. Wish I waited haha.

Anyway, 8 miles into my first ride with the new plates, they snapped/broke, bending the derailleur hanger and making the whole rear derailleur twist 180 degrees (upside down). Fun 0.5 mile walk back for a ride back to the start haha.

Not sure what caused the problem, too much torque on the bolt? I hit an object? I'm thinking the bolt due to the way and where the plates snapped off the derailleur. Again, wish I took pictures of the carnage, I'm slacking these days :D

So my LBS called Shimano, they didn't have anymore Yumeya RD Plates (figures since JensonUSA is clearing them out) so they gave me a $124 dollar credit, which is the MSRP for the plates. Remind you, I only paid $49 for the plates from Jenson, so I ordered the plates & a spare yumeya chain from Jenson with the $124 credit (so costing me $0) since they still had the sale going on.

I have the new derailleur hanger from Specialized and plates/chain, just waiting on the new RD. We didn't think the RD was FUBAR till we tried to stick the stock XTR plates back on and realized it was bent to hell so we called Shimano again and they are sending me a whole new M970 XTR RD from Shimano. They were out of long cage XTR RD so they are sending me a medium cage but I will just swap out the RD plates for the long ones that I have. What a damn cluster of crap but it's costing me $0, just some time. In the meantime I'm using my old XTR RD from 2000, only problem it's not rapidrise so had to get use to the reverse shifting quickly for a race I had :D

Here is some eye candy (pre-breakage):







Whole album (has pics of all my gold "bling" I put on)

https://picasaweb.google.com/iRoNeTiK/20100826BikeShots?authkey=Gv1sRgCJjRgpKZkZr3Lg&feat=directlink
 

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gone for a bike ride
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shame about the damage - but might be kismet for not weighing them for us :smilewinkgrin:

your Yumeya chain looks alot better on your bike than the product photo's over @ Jenson

really don't enjoy rebuilding RD's with carbon cages, i'm using toronto cycles alloy bolts that require a delicate touch on my long cage shadow: tighten abit then rest - then go back a tweak them slightly & re-check after 1st ride

glad its all sorted out, really looks like Shimano came through for you :thumbsup:
 

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weight weenie
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What is the durability of these Yumeya cogs? Do they wear out quickly? The smaller titanium cog in cassette the faster it will wear out because of the higher stress. That's why XTR cassette has only the larger cogs made out of titanium. Full titanium cassettes like Recon seems to wear a lot quicker than XTR. Especially the smallest cogs.
 
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