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Focus Mares CX 1x11 Di2 build

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Cyclocross and Gravelbiking (Recreational) This has to be the most physically intense sport ever invented. It's high speed bicycle racing on a short off road course or riding the off pavement rides on gravel like : "Unbound Gravel". We also have a dedicated Racing forum for the Cyclocross Hard Core Racers.

Focus Mares CX 1x11 Di2 build

Old 03-04-17, 06:07 PM
  #1  
Larry77
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Focus Mares CX 1x11 Di2 build

My cross 1x11 Di2 build that I've just started includes:

Dry fit:


-Focus Mares Cx Di2 frame (2014)
-Vuelta Corsa wheelset (will also use my Shimano RX 830 wheelset)
-Clement MSO tires ran tubeless
-Thomson Masterpiece set-back seatpost (with internal Di2 battery inside it)
-Fabric Pro seat
-Thomson X2 stem
-Ritchey WCS Streem II handlebars
-Shimano 6800 crankset with Wolftooth 38 ring as 1x
-Wolftooth 38T cog with Wolftooth chain guard
-Praxis conversion bottom bracket (BB30)
-XTR Race pedals
-Shimano XT Di2 rear derailleur
-Shimano 11-46 cassette
-Shimano R785 shifters and hydraulic disc brakes
-Shimano SC-MT800 Di2 display--as my junction-A

Tried XT cranks but they didn't fit well with the stock FSA BB30 adaptor so I changed to the Ultegra 6800 and Praxis conversion BB (too bad the XT cranks looked great!). I also changed to the 38T cog afraid the 36T would be too small:


Not a fan of the stock FSA BB30 adaptors

Last edited by Larry77; 03-12-17 at 03:16 PM.
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Old 03-04-17, 06:10 PM
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Changed cassettes on wheelset

Changed from the 11-32 cassette that I had on the wheelset already to the new Shimano 11-46 cassette:


Man the 11-46 is UGLY, but maybe I'll love the rescue gear?
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Old 03-04-17, 06:39 PM
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Those tires look like the MSOs not MXPs. What size and what're the clearances like?
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Old 03-04-17, 08:42 PM
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Interested in seeing how this turns out and some of the details of the build process or if there were any quirks in using MTB parts with this bike.

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Old 03-04-17, 11:17 PM
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Originally Posted by DarKris View Post
Those tires look like the MSOs not MXPs. What size and what're the clearances like?
Wow, nice catch! I wasn't near the bike when I wrote the post and I tried to remember which tires they were from their website (I fixed it on the post).

Here are the tires and wheelset:


The rear tire clearance, the angle makes it look bad on the near side:


Here is the front tire clearance:
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Old 03-04-17, 11:24 PM
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Originally Posted by Larry77 View Post
Wow, nice catch! I wasn't near the bike when I wrote the post and I tried to remember which tires they were from their website (I fixed it on the post).

Here are the tires and wheelset:


The rear tire clearance, the angle makes it look bad on the near side:


Here is the front tire clearance:
Thanks, although now I think your tires are on backwards 😊
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Old 03-04-17, 11:58 PM
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Originally Posted by DarKris View Post
Thanks, although now I think your tires are on backwards ��
Really?!?!?! I had them mounted originally by a LBS! I didn't even look, I'll look at them and fix them if necessary...jeez, THANKS!!!

Last edited by Larry77; 03-05-17 at 12:02 AM.
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Old 03-06-17, 10:14 PM
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Couple more things done today:

Installed Praxis BB:


Plastic sleeve inside Praxis to protect Di2 wires from crankshaft:


New Di2 wireless unit inline:


XT rear derailleur looks great:


BT-DN110 battery in Thomson Masterpiece:


I love the look of the Wolftooth 38T on the 6800 cranks:


Installed XTR race pedals:



Shifters, brakes, Shimano display, and programming still to come...
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Old 03-07-17, 07:21 AM
  #9  
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Wow great build! Decent tire clearance for a pure cx racer frame.

Too bad about the XT crank, it looked great. Maybe change the bearings out?
And yeah take the tires back to the lbs and have them fix that.
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Old 03-07-17, 07:36 AM
  #10  
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Originally Posted by shoota View Post
Wow great build! Decent tire clearance for a pure cx racer frame.

Too bad about the XT crank, it looked great. Maybe change the bearings out?
And yeah take the tires back to the lbs and have them fix that.
The issue with the XT crank is the width, they are 73mm and my shell is 68mm. I researched and even talked to Praxis but as far as I could tell the only way for them to fit would be to put 5mm of washers on the shaft. I didn't like the idea of a less stable and potential sloppy install so I went to the road cranks. I'm not completely thrilled with the look of the Ultegra cranks so I am going to try the Wolftooth vinyl wrap to see if that improves the aesthetics and hey, it will provide some paint protection I guess.

The Clement tires on the Vuelta's actually mount really easy and I now have an air compressor (I didn't when I first bought the wheels) so I'll flip them before I test ride...
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Old 03-07-17, 09:50 AM
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Originally Posted by Larry77 View Post
The issue with the XT crank is the width, they are 73mm and my shell is 68mm. I researched and even talked to Praxis but as far as I could tell the only way for them to fit would be to put 5mm of washers on the shaft. I didn't like the idea of a less stable and potential sloppy install so I went to the road cranks. I'm not completely thrilled with the look of the Ultegra cranks so I am going to try the Wolftooth vinyl wrap to see if that improves the aesthetics and hey, it will provide some paint protection I guess.

The Clement tires on the Vuelta's actually mount really easy and I now have an air compressor (I didn't when I first bought the wheels) so I'll flip them before I test ride...
Look into Rotor's cranks, they would nice on there.
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Old 03-07-17, 08:30 PM
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Originally Posted by shoota View Post
Look into Rotor's cranks, they would nice on there.
I wish I would have looked into them sooner, they look great! At this point I already have the BB and cog for the 6800 cranks so I'll probably stick with the Shimano for now. I don't see that there is a directly compatible Rotor version (for same BB and cog).
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Old 03-09-17, 09:31 PM
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I learned today I don't need both the SC-MT800 Di2 display and the EW-WU111 wireless unit (D-fly). Actually I couldn't get the firmware to update or the Di2 to work by having both hooked up.

I'm going to repurpose the EW-WU111 to my Di2 road bike. I will need to change out the internal battery on that bike so the Bluetooth will work but being able to adjust the shifting and update the Di2 via my phone will be worth it in my opinion.
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Old 03-10-17, 01:31 PM
  #14  
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Originally Posted by shoota View Post
Wow great build! Decent tire clearance for a pure cx racer frame.
Fairly typical clearance, in fact.
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Old 03-10-17, 04:08 PM
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Subscribed! Very neat build.
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Old 03-12-17, 09:30 AM
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She's complete:






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Old 03-12-17, 09:33 AM
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r785 shifters:


My favorite handlebars:


Display is really cool:
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Old 03-12-17, 09:36 AM
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Frame required IS to post mount adaptors for the brakes:




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Old 03-12-17, 09:40 AM
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I'm actually loving the way the Ultegra 6800 crank looks with the Wolftooth:


Very clean looking seat and seat post:


I may be trimming the fork in the future:


Lizard Skins DSP 2.5mm:
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Old 03-12-17, 09:48 AM
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Shifters are set up so that either switch on the left moves to a harder gear and either switch on the right moves to an easier gear. That way you are pushing the way the derailleur is moving if that makes sense.

I flipped the front tire for more of a "steering friendly" tread direction and left the back to be more "grippy".

I need to figure out which Garmin mount I am going to use, can't decide between an out front or a more MTB style stem mount.

I plan on using some frame protector (Crankskins) before I take her out.

I have another Focus but I'm always impressed with the quality of their frames, the paint is sexy and the build is clean (I could do with less advertising but, eh). I think her name will be "Hotness". I don't name all my bikes but I think this one is worthy of one :-)
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Old 03-12-17, 09:53 AM
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Here she is on the wall in the pain cave with her brother :-)
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Old 07-02-17, 07:46 PM
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I'm curious how this build has worked out for you. Do you like the XT Di2 rear derailleur and the SC-MT800 display? Where did you end up mounting your bike computer?
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Old 07-03-17, 01:33 PM
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I love the display, it's actually nice that it beeps when you are at the top or bottom of the cassette. The 1x is nice for it's simplicity but I do have to "re-acclimate" after being off the bike for awhile.

For the computer I ended up using a Barfly mount because it attaches to the left of the stem vs the right like the Garmin mounts but I may go to a stem mount for cross season (that's what I'm used to for MTB'ing, seems a little more protected).
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Old 07-04-17, 06:42 AM
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Good to know - I was on the fence about the display but I may have to splurge. It also seems like it would be a bit more rugged than the junction box under the stem.
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Old 08-06-18, 12:21 AM
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I am new to this forum. I did a search on the type bike I am “rebuilding” and found this thread. Do not want to hijack the thread but I am looking for someone working on the same bike.

I am in the process of moving to the North Georgia mountains. I bought my Focus Mares as I wanted to ride gravel roads in the area and thought I might want to try racing. Is there an over 65 group?

I am getting aquainted with the “paved gravel” roads in the community I live in. Gravel on the roads gets thick, especially in the tight turns and at the bottom of steep hills. The Focus bike I have has a Shimano 105 46/36 front, 11/28 rear. I have been riding my Rocky Mountain Sherpa MTB with a Shram 1x11 32 front, 10/42 rear because I can not get up the hills on the Mares.

I just ordered parts to convert the Mares to the new Eagle GX 1x12 group set. I ordered a GX Eagle crankset with 700mm cranks and 32t chain ring, GX Eagle derailleur, GX Eagle grip shifters, GX brake levers, GX eagle chain. Yes, I know the grip shifters will need a “flat” bar, which I am planing on.

The roads I will be riding on often have large steep drop offs on either side I am about to turn 69, bruise easy and recover a little more slowly. I do enjoy riding the community gravel/paved roads though. I will be more comfortable with a flat Riser handlebar and flat pedals, (ordered).

I think I need three more items: DUB bottom bracket, XD rear driver, Riser handlebar. Anything else I need? Not sure what size handlebars? Are most drop bars 31.8?

Thanks for any help you may provide.

Last edited by McMitchell; 08-06-18 at 12:29 AM.
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