• Have you got a U for the rear? This guy has some cheap U's at the momemt.
    https://www.ebay.co.uk/itm/BMX-U-Brake-Rear-Tektro-Black-907-twin-pinch-bolt-NOS-/182931035418?

    I bought a Raw GT frame on here a few back and bought one. I've hooked up the brake, seems quite easy to centre but I've not put bars/levers on yet to test any further. I'm gonna run a V up front with one of those Travel Agent gizmos and see how I get on with it. If it's pants I'll go with a canti.
    Have a search M_V wrote something about centring the U brakes, you need a spanner to hold a part of the brake in place on the stud and then you tighten the allen key to lock it so it works like the screw on a V brake by applying more pressure on the internal spring.

    Following this thread with interest.

  • That is precisely what I bought! Arrived yesterday. Seller was excellent too after his first attempt got lost by Hermes (there's a thread for that right?).

    Stuck them on this morning and worked out that thing about the internal spring, after it was pushing the pad onto the rim the first time I tightened the bolt (without holding the brake like you say). Glad to hear they seem ok to set up. I'll finish it off tonight.

    Does yours have internal cable routing for the rear brake? Mine does and I managed to get a cable through, but only the wrong way round (using an allen key that I magnetised with some cadence magnets to grab it). Going to try gluing/taping a cable the right way round to that one and pulling it through!

    Front on mine will be Tektro cr720, but I did look into a travel agent as V brakes just seem simpler.

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