And so it begins......

Especially for light weight issues concerning cyclocross / touring bikes & parts.

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ultimobici
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by ultimobici

Had this frame to play with last year as a full bike. Liked it so much I bought the frame only together with a respray.

Frame is Post mount 135 QR and weighs 1140g with seat clamp. TA fork with flat mount comes in at 520g.
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by Weenie


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FIJIGabe
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Location: The Lone Star State

by FIJIGabe

Beautiful looking bike. What are your plans?
Madone 9 https://goo.gl/7UwZpV
Crockett https://goo.gl/f5PdCN
Madone 5 https://goo.gl/cMdyFo

Madone 4, Cobia. I own a lot of Treks.

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ultimobici
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by ultimobici

Initial build will be with a mix of new & existing parts.

The definite part of the build is as follows

Shimano Dura Ace 9170 Di2 Hydraulic Levers
Hope RX4 Flat amount Front Caliper
Hope RX4 Post amount Rear Caliper

Mechs will depend on the choice of gearing. The bike will be multi use - commuting, hacking around the woods and longer mixed surface rides.

Option 1 - Dura Ace cranks with Absolute Black 46/30 oval rings coupled with 11-25 & 11-30 cassettes. This would require Dura Ace 9150 Mechs

Option 2 - Easton EC90SL cranks with Easton 46/30 rings. Cassettes & mechs as above.

Option 3 - XTR 985 double with 44/30 rings. Same cassettes but XTR Di2 mechs.

Wheels will be 700C & 650B

Hope RS4 Centerlock Hubs
DT Swiss XR331 or XR351 rims
Sapim D-Light spokes
700x33C cross tyres
650x42 or 47 gravel tyres

Finishing kit initially will be a hodgepodge of stuff until I’ve sussed out position etc.
Deda Newton stem 110mm
Deda Zero 100 bars 42cm
Time Carbon Post 27.2mm
USE shim 31.6mm
Brooks C13 132mm saddle




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FIJIGabe
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Location: The Lone Star State

by FIJIGabe

I like option #2. That Easton crank looks amazing, and is light, to boot. Seems like the build will be very light, but I would be concerned about using DA components in something you might take off-road. Personally, I think the weight penalty for R8000 is worth it (especially since you can go with the clutched RX RD).
Madone 9 https://goo.gl/7UwZpV
Crockett https://goo.gl/f5PdCN
Madone 5 https://goo.gl/cMdyFo

Madone 4, Cobia. I own a lot of Treks.

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ultimobici
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by ultimobici

I’m shooting for well under 8kg.

Luckily I work on the industry, so luxuries like Dura Ace & XTR aren’t as painfully expensive. Otherwise R8000 mechs would be the choice.

As for off road use, it isn’t a case of if, it will definitely be getting muddy!!

Last cross bike I had was Record 11 and it loved mud!
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emotive
Posts: 93
Joined: Tue Nov 01, 2016 10:40 am
Location: Melbourne, Australia

by emotive

ultimobici wrote:
Wed Jul 25, 2018 10:05 pm
Initial build will be with a mix of new & existing parts.

The definite part of the build is as follows

Shimano Dura Ace 9170 Di2 Hydraulic Levers
Hope RX4 Flat amount Front Caliper
Hope RX4 Post amount Rear Caliper

Mechs will depend on the choice of gearing. The bike will be multi use - commuting, hacking around the woods and longer mixed surface rides.

Option 1 - Dura Ace cranks with Absolute Black 46/30 oval rings coupled with 11-25 & 11-30 cassettes. This would require Dura Ace 9150 Mechs

Option 2 - Easton EC90SL cranks with Easton 46/30 rings. Cassettes & mechs as above.

Option 3 - XTR 985 double with 44/30 rings. Same cassettes but XTR Di2 mechs.

I've just built a gravel bike with EC90SL cranks, Absolute Black 48/32 Oval chain rings, 11-30 rear cassette, and and DA 9100 mechs. I also went with the Easton Cinch PM as clearance was limited to run a crank arm PM. 10 days in and 200km on the ODO, very happy so far with gearing choice and shifting performance. My road bike has 6800 mechs, and the 9100 is crisper, even with oval rings.

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ultimobici
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by ultimobici

So, while I’m waiting for the Easton crankset & BB to turn up, the wheels are getting built later today.

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Rims came in at 405g including washers. Claimed weight is 380, so 6% over.
Spokes will be black DT Swiss Competition.




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ooo
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Joined: Sat May 21, 2016 12:59 pm

by ooo

What about rotor size? 160front/160rear, 140front/160rear, 140f/140diy-rear?


Option 3: "XTR 985 double with 44/30 rings. Same cassettes but XTR Di2 mechs"

xtr di2 mech in 2x setup do not allow small small combos, only this will be available:
44x11-12-13-14-15-17-19-21-24-27-30
30x14-15-17-19-21-24-27-30
1) that means a lot of front mech shifting, because 30x14 is too small (while 44x30 is too big)
2) 14T front shift will be slow, because xtr di2 FD optimized for 10T
double 42-32 or 44-32 can help with both problems
'

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ultimobici
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by ultimobici

ooo wrote:What about rotor size? 160front/160rear, 140front/160rear, 140f/140diy-rear?


Option 3: "XTR 985 double with 44/30 rings. Same cassettes but XTR Di2 mechs"

xtr di2 mech in 2x setup do not allow small small combos, only this will be available:
44x11-12-13-14-15-17-19-21-24-27-30
30x14-15-17-19-21-24-27-30
1) that means a lot of front mech shifting, because 30x14 is too small (while 44x30 is too big)
2) 14T front shift will be slow, because xtr di2 FD optimized for 10T
double 42-32 or 44-32 can help with both problems
Rotors are going to be 160 front & rear.

In the end I've decided to go with dura ace mechs and forgo the option of 32 or larger rear cassette.


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OnTheRivet
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by OnTheRivet

You can run a 32 with Dura - Ace just fine.

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ultimobici
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by ultimobici

OnTheRivet wrote:You can run a 32 with Dura - Ace just fine.
Yeah, I've seen a couple of featured bikes on cxmagazine that use a 32. We'll see.....


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ultimobici
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by ultimobici

Bit by bit she’s coming together. 7kg as pictured. No brakes, cranks, BB, pedals or chain.
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LouisN
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by LouisN

...440g left for Brakes, BB, chain, cassette and pedals ... ;) ...
Love the "rusty psychedelic" pattern colors on the frame !!

Louis :)

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ultimobici
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by ultimobici

LouisN wrote:...440g left for Brakes, BB, chain, cassette and pedals ... ;) ...
Love the "rusty psychedelic" pattern colors on the frame !!

Louis :)
8.4kg built. But.......

Stem is an old Newton 31 so I should be able to drop a few grams there.
Seatpost is an old Time one with solid internal brace - easily drop 50g or so there
Tyres are steel beaded Conti Cx Race with tubes. At 420g per tyre and 155g per tube each, I reckon I’ll be able to drop the rest pretty easily.

We will see!


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Powerful Pete
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Location: Lima, Peru and the Washington DC area - it's complicated.

by Powerful Pete

Nice build. Can we see a side picture?
Road bike: Cervelo R3, Campagnolo Chorus/Record mix...
Supercommuter: Jamis Renegade...
Oldie but goodie: De Rosa Professional Slx, Campagnolo C-Record...
And you can call me Macktastik Honey Pete Kicks, thank you.

by Weenie


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