Hi. New ( 1 mnth road driven ) norco mountaineer 7005. Back disc brake rubbing a bit. Need clear instructions to fix. Please guide me norco gods. Tim

Hey, Local bike shop determined that both wheels were defective. I took the junk back to Walmart and got a refund... PROBLEM SOLVED!!

Check out https://gearly.org/ for more info.

Thanks.

adjust the cable at the brakes or and piece by turning the retainer that holds the outer cable case

Most likely the break pad is rubbing intermittently as it rolls because the rim is bent. If its a OEM spoke rim then it wont take many curb jumps to bendit. Most mountain bikes from a walmart or academy wont be anything more than the basic for streets. If you are going off road on real mountain biking trails then you would be better off getting a stronger rim but these can be pricey. Another cause can be that the tensioner springs near the break pads need to be adjusted so you can pull the pad away from the rim. Problem is that it will take some of the stopping power away. Not recommended. Most high end mountain bikes have an actual rotor type disc break like a motor cycle that's on the inner rim so that way even if the rim gets a little bent or wet, the performance of the breaks is still up to par. To check if your rims bent, turn the bike upside down and set it so you can spin the back wheel really fast with the pedals. Then look at the tired from directly behind it. If its bent, you will see the wobble.

Yes, an Ammco 3000 brake lathe can be converted over to a 4000 model--most any year 3000.... preferably the later years after 1970.

The problem with some of the early 60's models is that the cross-feed bore is not perfectly perpendicular to the spindle.

If you convert one of these models, you will cut the rotor at an angle and then jam the machine.

Later models can easily be converted.

You will need...

1) A complete disc feed gearbox.
2) A driven pulley (the big one) set-up for a with a pin drive.
3) A complete spindle lock assembly for the Infimatic gearbox.
4) Possibly need a longer guide bar for the cross-freed. If you have a round guide bar, this is possibly long enough. If you have a "Double-D" guide bar (flat on each side), you most likely will need a longer bar.
5) A complete twin-cutter, with tool guides, tool holders, knobs, etc.

We have all the parts you need for a conversion--or we can convert it expertly for you...

Buy Sell Used Brake Lathes Brake Lathe Parts

Park tools has a great online bike Matanance guide. Use these links to adjust your derailer and brakes. http://www.parktool.com/blog/repair-help/front-derailleur-adjustments http://www.parktool.com/blog/repair-help/categories/brake-service-and-repair To adjust your brakes, look at the page and use the article that best gifts your brakes. Unless you have REALLY nice brakes, you have mechanical brakes.

Try taking out the pads and reseating them. I have found that sometimes the pads don't fully click into position and so they stick out a bit, which will cause minimal clearance and rubbing. Sounds like you have everything else in position correctly.

If this doesn't work, maybe you have a bad set of pads? happened to me recently on a set of Avid's.

Hi,
First be sure the calipers are working properly. Test by pushing the brake hard and then spin the wheel. If this is new and it rubs - look closely and be sure it isn't the bend tab or warning tab rubbing. If they are old brakes replace as this is the warning you are needing to replace.
IF new - and they still rub - remove and inspect - be sure there is not a 'bend or warning tab' that is rubbing.
If there is no tab rubbing - you can SAND [ with sand paper] the BRAKE PAD carefully and squarely. I suggest you take these to a professional as the items I describe should be caught by a beginner.

Thanks for choosing
Gary @ Fix Ya

I had the same problem with my first car. It was the disc brakes rubbing steel to steel. You need to change your brake pads...right now!

I had the same problem with my Hope mono-mini.
I took it into a shop and the guy showed my ruffly what to do.

On the side that the disk is rubbing you need to put a spacer on the bolt between the brake mount and the bike's mount.
If done correctly (or understood what i meant) it will pull the pad away from the disk a little bit and it will stop rubbing.

Hope it helps
Ed

NEVER swap rear tires... the radial tires are not made/designed to be driven one way and then driven the other... they WILL delaminate and come apart.. when you rotate tires, you rotate front and rear on the same side....(old bias-ply tires were rotated around a vehicle)
... if you did not have both sides of the rear brakes fitted with new pads and ..at least had the rotors turned.. do that. look closely at the inside of your wheels and make sure there has been no contact.... once you have made sure both sides are good.. reply back to me on here.. thanks... please mark as helpful.. thanks