Results 1 to 13 of 13
  1. #1
    mtbr member
    Reputation:
    Join Date
    Jan 2015
    Posts
    167

    Double crankset setup.

    I have an older e thirteen single/double xcx+ crankset.

    It is currently set up single how would I go about making it a double? And what type of chainrings would I need?

    I would like it to be 22/36 or 22/34 as I plan on running it di2 syncro shift with a dura ace 11-30 cog in the rear.

    The idea being to get the range of eagle and move the weight back to the middle of the bike.

    I already have di2 1x11 and would only need the front derailer.

    Here is pic of my crankset..E Thirteen XCX+ Double Crankset | Chain Reaction Cycles

  2. #2
    Nutrailer
    Reputation: JackWare's Avatar
    Join Date
    Aug 2016
    Posts
    311
    I'm not sure regarding the derailleur required but looking at the description you added the link for, the outer spider has a BCD (Bolt Circle Diameter) of 104mm so the inner will be 64mm.

    If you just search for 22/36 or 22/34 chainsets and ensure they are 104/64 you'll be fine.

    I found this with a quick Google

    Double crankset setup.-capture.jpg

    But are you sure you want to add another front cog and derailleur and another shifter?
    You can get a similar spread of rear ratios with by changing out the rear cassette for a wider range one;


    Double crankset setup.-gear-ratios.jpg

    YMMV
    What a perfect waste of time

  3. #3
    mtbr member
    Reputation: DethWshBkr's Avatar
    Join Date
    Nov 2010
    Posts
    2,064
    FYI, I do not think a Dura Ace cassette will work as you'd like.

    I have XTR Di2 on my Scarp, 36/26 front. I rarely dump into the 26, so I put an Ultegra 11-32 on the bike, figuring I could set the synchro shift to use the lower ring, and have a tighter ratio.
    The rear would not "quite" work properly. It would shift, but with an occasional skip or shifting issue. The spacing on the road cassettes appears to be slightly different.

  4. #4
    mtbr member
    Reputation: DethWshBkr's Avatar
    Join Date
    Nov 2010
    Posts
    2,064
    Quote Originally Posted by JackWare View Post
    But are you sure you want to add another front cog and derailleur and another shifter?
    You can get a similar spread of rear ratios with by changing out the rear cassette for a wider range one;
    Di2 makes 2x very nice. No shifter needed for one....

    Range is not always the important thing, sometimes having a tighter spacing is better! 1x cannot deliver that.

  5. #5
    mtbr member
    Reputation:
    Join Date
    Jan 2015
    Posts
    167
    Quote Originally Posted by DethWshBkr View Post
    FYI, I do not think a Dura Ace cassette will work as you'd like.

    I have XTR Di2 on my Scarp, 36/26 front. I rarely dump into the 26, so I put an Ultegra 11-32 on the bike, figuring I could set the synchro shift to use the lower ring, and have a tighter ratio.
    The rear would not "quite" work properly. It would shift, but with an occasional skip or shifting issue. The spacing on the road cassettes appears to be slightly different.
    Hmm I have a couple friends who run road cassettes just fine it's common.

    But they don't have di2 I'll look into it.
    Thank you.

  6. #6
    EAT MORE GRIME
    Reputation: 127.0.0.1's Avatar
    Join Date
    Nov 2013
    Posts
    3,548
    "Put your seatbelt back on or get out and sit in the middle of that circle of death." - Johnny Scoot

  7. #7
    mtbr member
    Reputation:
    Join Date
    Jan 2015
    Posts
    167
    My crankset only has one set of bolt holes so I thought it needs some special chain ring?

  8. #8
    mtbr member
    Reputation:
    Join Date
    Jan 2015
    Posts
    167
    Yes thank you I think I'm screwed and need new cranks those rings are not in stock and are 9-10 which may be too wide for 11 spd chain.

  9. #9
    mtbr member
    Reputation:
    Join Date
    Jan 2015
    Posts
    167
    I sent e13 an email to see if they have a set of rings laying around somewhere.
    I'll update if I get them.

    Thanks for all responses.

  10. #10
    mtbr member
    Reputation:
    Join Date
    Jan 2015
    Posts
    167
    Quote Originally Posted by JackWare View Post
    I'm not sure regarding the derailleur required but looking at the description you added the link for, the outer spider has a BCD (Bolt Circle Diameter) of 104mm so the inner will be 64mm.

    If you just search for 22/36 or 22/34 chainsets and ensure they are 104/64 you'll be fine.

    I found this with a quick Google

    Click image for larger version. 

Name:	Capture.JPG 
Views:	19 
Size:	129.9 KB 
ID:	1187144

    But are you sure you want to add another front cog and derailleur and another shifter?
    You can get a similar spread of rear ratios with by changing out the rear cassette for a wider range one;


    Click image for larger version. 

Name:	Gear ratios.JPG 
Views:	20 
Size:	34.1 KB 
ID:	1187145

    YMMV
    As the other guy said di2 shifts with one shifter and I can program where it shifts the front ring.

    Meaning it will never be cross chained so I can run a short chain with zero slack.

    Also the point is to get away from huge rear cassette and move unsprung weight from rear to the middle of the bike. The 11-30 cassette is 200 grams.

  11. #11
    mtbr member
    Reputation:
    Join Date
    Jan 2015
    Posts
    167
    Ok thanks everybody e thirteen got back to me and I did need the chainrings that bolt together and they do have 22/36 in stock so yay.

  12. #12
    mtbr member
    Reputation:
    Join Date
    Jul 2017
    Posts
    674
    Quote Originally Posted by Kevin Van Deventer View Post
    My crankset only has one set of bolt holes so I thought it needs some special chain ring?
    You need a spider for those chainrings, to be specific. I'm assuming that your current chainring (and the existing spider, if any) was designed for 1x. You'll need a 2x spider in the 104/64bcd configuration to be able to fit those chainrings.


    Sent from my iPhone using Tapatalk

  13. #13
    MTB B'dos
    Reputation: LyNx's Avatar
    Join Date
    Oct 2004
    Posts
    23,011
    Subscribed to see how this works out for the OP and if he does in fact have any shifting issues using the road cassette with MTB setup.

    One thought, how about cage length? Thinking that the MTB RDs are designed for cogs up to 46t, so getting the top pulley close enough and good chain wrap, could be an issue. I just set my 10 year old Monkey up for road duty, 10 spd, 25-11 cassette and Zee RD and it worked very well, decided to steal the Zee RD for my newest build running basically a 1x setup and so put a regular XT and it's not shifting nice at all, thinking I may order another Zee RD for it.
    One day your life will flash before your eyes, will it be worth watching??

Similar Threads

  1. Converting an FSA triple Dynadrive Crankset to a double crankset
    By wheelinthai in forum Drivetrain - shifters, derailleurs, cranks
    Replies: 2
    Last Post: 08-22-2014, 06:20 AM
  2. Differences in strength between XT 780 triple crankset and the 785 double crankset??
    By zoro in forum Drivetrain - shifters, derailleurs, cranks
    Replies: 1
    Last Post: 04-15-2013, 03:11 AM
  3. Replies: 18
    Last Post: 10-30-2012, 08:35 PM
  4. Double specific FD for triple crankset, 2x9 setup
    By nampla in forum Drivetrain - shifters, derailleurs, cranks
    Replies: 19
    Last Post: 05-06-2012, 04:41 AM
  5. First Build - Double Sled Design - Double XP-G R5 + Regina
    By tv-kid in forum Lights DIY - Do It Yourself
    Replies: 46
    Last Post: 11-24-2011, 11:16 PM

Members who have read this thread: 38

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  

THE SITE

ABOUT MTBR

VISIT US AT

mtbr.com and the ConsumerReview Network are business units of Invenda Corporation

(C) Copyright 1996-2018. All Rights Reserved.