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I got a great deal for a Lynskey R260, that is set for caliper brakes. I'm building my first bike from scratch and am thinking of using disc brakes on the front fork. Is there any reason why I wouldn't be able to use this fork with the R260?

I understand I'll need to use caliper brakes on the rear. Is it possible to mix and match?

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    The front and rear braking systems can be totally different varieties; this is not uncommon (particularly when disc brakes were new; nowadays on bso's); typically now you see both disc or both rim on non-BSO's. I'm not sure why you'd want that fork; you'd be running a quick release in the back and a thru axle in the front, so you'll be picking up the wheel for the front separately from the back, along with the brakes, and arguably not having the thru axle where you want it (though not clear why you'd want one on this type of bike to begin with...). – Batman Sep 26 '18 at 3:45
  • What is not suiting you in the existing fork and its rim brakes? – Grigory Rechistov Sep 26 '18 at 6:14
  • I don’t have forks yet, so am just looking for something compatible. I thought I’d try disc brakes if possible for the front, but am realizing that it might be more trouble than it’s worth. – pedram Sep 26 '18 at 6:45
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    When buying disc caliper, make sure to buy "road" caliper. The brake pull for MTB caliper is larger and doesn't work with the shifter you are going to use, assuming you are going to use drop handle brifters. – Naoyuki Tai Sep 26 '18 at 16:00
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Yes, you can use that fork and mixmatch components. Of course you'd have to check parts compatibility, here's what to look for:

  1. Stock and replacement fork rake/axle to crown measurements. Pro Carbon Road #2, which is offered as a stock option for that frame, and Pro Carbon Road #5, which you want, both have rake of 45mm and axle to crown of 368mm, so everything's good.
  2. Then make sure the frame accepts you fork of choice steerer type (i.e. 1-1/8 to 1.5 Inch Tapered). Again, these match, so good here too.
  3. Fork crown shape. Totally not the issue in your case, but some frames/forks have weird crown shapes that pretty much lock you into specific vendor options.

The rest comes down to components choice:

  1. What brake levers are you going to run? Options are: a) full mechanical, b) one mechanical and one hydraulic (but the shape might be too different) and c) full hydraulic (there are hydro rim calipers, but make sure those will work with the frame).
  2. You'd have to build a custom wheelset or purchase front/rear wheels separately. Rear QR and thru-axle in the front is no problem at all, I run the same and some bikes come with such a setup out of factory.
  • Would there be off-the-shelf wheelsets with front hubs that convert from QR to through axle? – Swifty Sep 26 '18 at 7:42
  • There are hubs like that, for example Novatec D771 or Extralite CyberFront SPD-2 and probably many more. – Klaster_1 Sep 26 '18 at 9:52

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