Brakes Who is using disc brakes and what kind?

Discussion in 'Bicycle Repair' started by schwinn123, Mar 20, 2015.

  1. schwinn123

    schwinn123 Member

    Im about to start a new big build. My question lies in the brakes. Im going to be putting a disc brake on the front of this bike. This would be my first set of them. What kind of disc brakes are people using? Anybody have success with some of the ebay kits from hong kong? I am aiming at some of the AVID kits, but there are also a lot of choices of those. Hydraulic or mechanical? Any feedback?
     

  2. Roy K

    Roy K New Member

    I am using the mechanical Avid BB7 200 mm disc on the front and 180 mm for the rear of my new build they are quite good as they come with a lot of mounting bracket options to fit almost anything. It mounted on my monark forks with no problems.
     
  3. schwinn123

    schwinn123 Member

    Thanks Roy. Yeah I'm leaning twoards the avids but there's so many different styles of them as well. Any particular reason you have a 180 in the front? Seems like 160 is the more common size.
     
  4. Roy K

    Roy K New Member

    The 180 is on the rear I'm using 200's on the front, the reason I'm using them instead of the 160 is I had Shimano 160 on my downhill racer and they didn't pull up to good, so I thought if I went bigger on this build it should be a lot better to cope with a motor. I won't know how good it is till it is all completed hopefully my frame will come back next week from the powder coater so I can assemble it together.
     
  5. highstrung74

    highstrung74 New Member

    im using a clarke from ebay(mechanical).
     
  6. KCvale

    KCvale Motorized Bicycle Vendor

    Hydraulic's are a pain in the butt depending what kind of bike you are building.

    TRP Brakes makes a hybrid called the HY/RD that is cable to the caliper, and Hydraulic inside.
    They worked great on this Surley with a dual pull brake lever.

    [​IMG]
     
  7. 2old2learn

    2old2learn Member

    Nice looking build KC.

    Wayne
     
  8. KCvale

    KCvale Motorized Bicycle Vendor

    Thanks Wayne.
    That was a custom job for a customer.
    He wanted a mule with a top speed of 15~20MPH that would climb a sheer cliff with no gears.

    [​IMG]

    Jackshafted it to keep the disc brake and just one big sprocket on the hub.

    He loves it ;-}
     
  9. steveanson

    steveanson New Member

    KC, as one of many who value your opinion concerning many aspects of motored bikes, I'm curious if you're seen or have used this sprocket disk brake device. It appears that after removing the rear brake disk, the sprocket is mounted on to the hub, and the brake disk on to the sprocket via an adapter. If this does in fact work, it would solve my current dilemma of running a left side chain and still using the factory disk brake.

    My concern is that the rear hub is not up to the task withstanding engine torque, even though they are designed to take years of stopping power. Do you have any experience with this adapter? Thanks, Steve

    http://www.ebay.com/itm/MOTORIZED-B...6429?ssPageName=ADME:X:RTQ:US:1123&rmvSB=true
     
  10. KCvale

    KCvale Motorized Bicycle Vendor

    I haven't tried any of those 'top hat' sprocket/disc combos, sorry.
     
  11. steveanson

    steveanson New Member

    I guess someone on this forum should try it. I'm going to order one today and start a thread about it...Steve
     
  12. KCvale

    KCvale Motorized Bicycle Vendor

    Cool, it's always neat to see what works and what doesn't.
     
  13. TobiasKilroy

    TobiasKilroy Member

    Avid Elixr

    I am using the Avid Elixr 160 kit mounted on a third party fork adapter bracket. I really like the brakes because they can haul my 400lbs from 25mph down to 0 in 125ft. I can squeeze the lever much harder than that but i have torn my wheel from the fork under emergency braking with this setup.
     
  14. KCvale

    KCvale Motorized Bicycle Vendor

    It is really best to use a front fork with disc brake bosses and a wheel made for a disc.

    Bolt on stuff may be dandy for pedal biking but I don't think I'd trust them for MB speeds, there is a tremendous amount of force on disc brake parts, especially at the speeds we can reach.
     
  15. TobiasKilroy

    TobiasKilroy Member

    1. I agree with you.
    2. That's why my bike will remain mechanically limited to 25mhp
    3. Without axle retainers I could tear the wheel out of the fork regardless of how the caliper is mounted.
     
  16. Waxxumus

    Waxxumus Member

    400 lbs?
    That isnt all you is it?
     
  17. TobiasKilroy

    TobiasKilroy Member

    Uhhhh..... <_<...>_>..... Yeah that is mostly me. I tip the scales at a petite 380lbs.
     
  18. KCvale

    KCvale Motorized Bicycle Vendor

    I am thinking more along the lines of a 3rd part 'bolt on' caliper coming loose and binding your front wheel to a dead stop.
    There is no happy ending with that scenario.
     
  19. TobiasKilroy

    TobiasKilroy Member

    Agreed no happy ending. But I can say that with 4-500mi on my setup so far I have had no issues.
     
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