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Porqueria Monstercross

I took a course by Robert of Big Forest Frameworks to learn fillet brazing, turned out quite nice, I find. Geometry-wise i one-upped the One U.P. :) Using a regular BSC BB shell I made a rear end that can take up to a 45-622/650bX2,2, tire yet has chain stays only 418mm long. Don't know what the fuzz with those modern wide bbs is about :) -->Edit after about a year of riding: I found it, the fuzz is about chainline. Well I'll count that for the learning curve.

fillet brazed, 44mm headtube, curved stays, ds flat blade stay, 56cm tt, paragon dropouts, 1X cable routing only, stainless braze-ons

steel w/ 3-bolt mounts / ZS44/28.6

Crankset/Bottom Bracket:
HT2 Ultegra


40t Garbaruk narrow-wide/ XT 11-42t cassette

XT Di2 RD-M8050 / ST-R 785

Ritchey 44cm/Thomson X4 120mm -10°

SQ Lab 14cm

Shimano BR-R 785 hydrooo

Front Wheel/Hub/Tire:
(Alfine) Dyno hubs for ever! 3W finally. DT XR361, 47mm WTB Byway tubeless + fresh IceTec Discs

Rear Wheel/Hub/Tire:
Hope Pro4; DT XR361, 47mm WTB Byway, fresh IceTec Discs

B+M IQ-X, B+M Mini rear, Dynamo Harvester,...

More Info:
Nearing completion with a sweet group set finally. There's still some things I wanna try though, before it can go to the paint shop. But first: Off to Riga!

Bike History

Click a link below to see past stages of this bike.

  1. Initial
  2. here she goes
  3. 650 and it's all over the place
  4. slowly coming together..
  5. Self support gravel mode (#CBG18)
  6. Di2 Baby!
  7. Updates..

Current Stage Info:

later on, I'll fill this up

Added by ques_one. Last updated almost 6 years ago.



lele85 says:

This is real!!! Bravissimo!

Posted over 5 years ago


ques_one says:

NDS is dimpled, not as much as for example Surly do it, but yes. Might have gotten away with a regular stay on DS, but that's a pretty close call for the chainline. Depends on sprocket size, I plan to run 1X with a 42tooth max. - probably smaller.

Posted over 7 years ago


Kyono says:

What tire clearance do you reckon you could achieve without resorting to the two-piece chainstay? Did you dimple your tubes?

Posted over 7 years ago