Could you post a part list?
frame Cannondale Flash 29er M size sanded by hand
fork Lefty carbon DLR SL 2009 OPI 88+ tuned
crankset Hollowgram SL 170mm
rings combo spiderless CarbonTi 36-24T with ti bolts
122mm spindle with lip machined off and carbon spacers
front der. Di2 7970 with custom CNC hanger for S3 mount and braze on derailleur
rear der. Di2 7970 with KCNC 11T pulleys and custom CNC hanger ( more long and more bakward )
chain KMC X10SL
pedals EGG 11 custom red springs
stem/bar/tube carbon combo from EP
saddle Saevid 1.1
seatpost Ax Lightness Europa 27,2 x 350mm
seatpost collar Cannondale stock one ( to be changed with MFCK )
rotors Stan's alu 160 with 3 ti bolts
brakes Formula R1 with matchmaker
custom alu/carbon calipers mount adapter
Di2 internal cables and harness and custom internal battery ( all in the seat tube )
wheelset Stan's ZTR Race gold 29er
rear skewer FRM 10x135mm
Are those custom shifters your final version? The buttons look like they're very small and at a tricky angle to reach with a thumb in a hurry.
Do they work ok in practice?
better result for my finger in this way
I'd be curious to see any build progress pictures of the bar/stem combo & the shifter mods if you have any please?
nice!! Why didn't you used the standard shimano buttons designed to go in the flat part of any road handlebar???
for their crazy price ....
Originally Posted by MaLoL
Great bike! I have been very interested in di2 for MTB for a long time.
How did you achieve the custom rear derailleur cage? Were you able to buy it yourself? Did you design it and have it machines yourself? Is it just cnc? Do you have the cad files?
All the mods required to make di2 work how happy are you with the result? How long did it take you to do?
i spent long time thinking a solution , viewing the K-Edge solution.
K-Edge cage was a bit expensive , they asked me aorund 250-280 usd (not rememberingwell, sorry) + shipping 2 times overseas from home (Italy) to USA and reverse.
however, i want to have a custom solution, not easy as buying a complete groupset from K-Edge but more satisfactory for me...
thet worked in the right direction for a 29er use with XX Sram 11-36 cassette: 36T cog is very large, and a normal derailleur is not able to run it.
if you think about it, 10 speeds means the arriving of XTR shadow that has the cage a bit backwards respect old XTR 970-971 models ...
K-edge so decided to put upper pulley backwards a ... millimeters. ( don't know how much )
i work on rescue helicopters so i have a "good eye" ... i decided that right measure was x mm backwards and y mm down for the new point of screwing rear derailleur on hanger.
a friend did a work on his Flash 26" 2 years ago: not happy about weak Cannondale stock derailleur hanger, asked to a small company (one man does all) to do a custom hanger.
i remeber this, so asked to my friend to keep me in touch with this CNC owner.
spoke a lot, drunk some beers, and he said yes to my request.
not speedy work, have to wait 30-40 days (boring waiting for) but i have 2 cages.
one for spare or for sale...
i called them Siffredi, like a man, famous italian pornostar ( my RD hanger is not so long as his d**k ...)
so not a engineer study ...but at a glance...
i have no files, maybe CNC worker has them...
i hav not so much free time to stay in my garage to work on bikes, so i took 3-4 monhts to finish it
Thanks so much for the reply! Really good info.
How happy are you with the result? What crank/chainrings are you using?
Hollowgram, what else ?
This article says that wiggens put a Yumeya XTR cage on his Di2 rear derailleur: Wiggins' Shimano Di2 Long-Cage Derailleur | Pro Cycling News: This Just In | Bicycling.com
I imagine its the same as the normal XTR cage, just both sides carbon. If you can swap it (who knows if it was an easy swap or if there was some other BS they had to do that the author didn't know about) what's the downside? Why are people, and why did you, make a custom cage and not use an XTR cage?
This article mentions doing the same thing: Hack! Ultegra Di2 Long Cage Rear Derailleur
Last edited by litany; 05-11-2013 at 09:19 PM.
Yumeya | eliflap
i already bought a Yumeya cage, yes same as XTR971 long cage.
i never tried it, but for my hopinion i think it fits only a 11-34T cassette ...
why Shimano goes to Shadow rear derailleur when arrived 10 speeds cassettes ?
for the request of moving backward the upper pulley. in fact 972 and 971 are very different deraillaurs.
the cage lenght in a 36T cog mount is important but not mandatory.
so my Yumeya is keeping dust.
i do not want install it with my long hanger: both installed, rocks beoming too close to my rear derailleur ...
for Wiggins' link and picture : it's not a 36T cassette , maybe 32 or 34 ...not 36.
hope to explain in easy and unsterstanding words, sorry for my poor English.
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