k4n3afk

im getting disk brakes (mechanical) for my bike and i was wondering if i needed different wheels for it.
do i need a different set of wheels for the disk?

Luke52

You need a set of wheels with disc-compatible hubs.

CACycling

And your frame and fork will need to have mounts for the calipers.

Mondoman

k4, the wheel hubs need to have disc rotor mounts, and the bike needs to have disk brake caliper mounts.

There are currently 2 main types of disc rotor mounts: 6-bolt and Shimano's Centerloc. I've seen adapters to allow mounting of 6-bolt rotors on centerloc hubs, but they're usually fairly expensive or of somewhat dubious durability.

There are currently 2 main types of disc caliper mounts for front forks: IS and post mounts. IS mounts are a pair of small tabs (parallel to the plane of the wheel) with holes in them. Post mounts are a pair of small posts sticking out of the fork at a 90 degree angle facing back toward the rear, with holes in the ends of the posts.

IS mounts similar to the front are the common style of rear disc caliper mounts.

Since the disc caliper mounting position varies with the diameter of the rotor, you may also need an additional adapter to space the caliper out further from the axle.

k4n3afk

my frame has the mounts.. i guess ill need to buy new wheel hubs
i was wondering, where on this forum can i find about trials biking?

hernick

Wheel hub replacement is not an easy task. You'd need to completely disassemble every spoke off your old wheel and completely rebuild a new wheel around the new hub. If you've never done this before, expect to spend a couple of hours on each wheel and need to have the wheels checked out by a LBS afterwards.

Also, it's usually not a good idea to reuse old rims and spokes. In fact, would recommend you get new wheels if you want to upgrade to disc brakes.

Cheap disc brakes are no better than V-brakes. Avid BB7 are very good for the money. You may want to consider running a disc brake on the front wheel and keeping your existing brakes on the rear wheel.

k4n3afk

well my friend is selling me good disk brakes.. he just couldnt use it because his bike doesnt have the mounts (old bike)
also, im thinking of just buying new wheels since mine is kinda bent (crash)
my old v-brakes are bent because its cheap stock v-brakes.. so going with these disks are really helpful

k4n3afk

since i live in the philippines and its abit hard to find good bike items there.. i guess i'll just buy the hub while im still here in the states.
are all hubs the same size or do i need different hubs for different rim sizes?

bikinfool

You can use any disc hubset you want as long as they are matched in number of spoke holes to the rim (32 would be normal), but the particular hub and rim combo will determine the spoke lengths you'll need. If you're using the same rim the chances are you'll need different spoke sizes. Deals on complete wheels can be worth looking at, too if you're here long enough. Check out BicycleWheelWarehouse.com...

k4n3afk

im actually leaving next week
i know i can buy spokes in the philippines.. ill probably get the hubs here and get new rims over there.. ill match the holes in the rim to match the hub.
i would get the stuff online but not enough time and next day shipping is expensive

k4n3afk

btw, whats the average price of a cheap disk hub?
im not looking for something expensive.. im trying to save some money here
i counted my 3 other bikes here and its 36holes which is stock.. and i know that my MTB in the philippines uses stock wheels so im gonna go with 36

Mondoman

The best way to save money is to buy an assembled wheelset. Decent disc brake hubs (as opposed to non-disc hubs) are not cheap. Check out Spadout: https://www.spadout.com/store.php?cat...t_sort=pricelh

You can pick up an assembled 26" wheelset with XT hubs, a decent strength rim, an DT Swiss spokes for $160 assembled: https://www.cambriabike.com/shopexd.a...+LITE+WHEELSET

If you're willing to settle for cheaper quality, here's a Deore rear hub for $20: https://www.cambriabike.com/shopexd.a...+MTB+DISC+HUBS

And here's the matching Deore front hub ($25): https://www.cambriabike.com/shopexd.a...T+MTB+DISC+HUB

k4n3afk

thanks for that.. but i have a problem.. i can't buy them online since the shipping will take awhile
i was wondering.. how do you know if your bike rear hub is a cassette or threaded?
also, i guess ill be buying a chain lock and the thing that losens the bolt..

bikinfool

Hard to guess whether you have a freehub or freewheel type cassette without more information. I wouldn't call 36 a norm either. The thing that loosens the bolt? You mean a chain whip and cassette lockring tool?

ps Where are you in the US? Maybe get some good lbs suggestions that way...

k4n3afk

hidalgo, texas, usa
yea.. i meant chain whip and cassette lockring tool lol
let me take a picture of my other bike here in the states.. ill post it tomorrow

ill get a 36 now and when im in the philippines, ill buy new spokes and a 36 spoke rim.
my bike had some serious damage from a bad crash.. a metal wire (biking down a construction yard) hooked on the back derailure then to the wheel which bent the wheel and derailure. my v-brakes are already bending (stock cheap v-brakes).
thats why im buying disc brakes and a new hub here and i'll buy new rims, derailure, and levers back in the philippines since those are easy to find
its just hard to find disc brakes in the philippines with a disc hub.

k4n3afk

i just checked at my local bike store and they have no hubs there, they only have the set and i can't bring full tires back because of the size and weight (im bringing alot of stuff already)
so i guess ill just buy my hub and rim in the philippines.. i hope they have it there

i just bought a new chain cutter and those hooks to remove the tire off the rim.. its very very very helpful indeed. now i just need a cassette lockring tool and spoke wrenches ^^

Mondoman

Since hubs are relatively small and light (and durable), you might be able to mail-order them and have them shipped to the Phil. at a reasonable shipping cost.

k4n3afk

true.. i'll probably do that when i get later hubs. right now ill buy what i can get in the phil