they are promax mechanical disc brakes they are new so they cant be worn out if i hit the level fast all the way the back tire lifts up about 2 inches then it goes back down and it takes a while to stop so i think they are making to much heat what can i do?
Discs make a LOT of heat. This is normal. If your bike came from a discount store such as Walmart or Target the brakes have probably never been adjusted correctly. Take it to a shop and have them do a brake tune up. Should you wish to try and do this yourself I suggest that you go to the Promax website for instructions on adjustment.
If they are too new then they haven't worn in yet. The pads need to wear in to match the contours of the disc. Same thing happens on a motorcycle. Change the front disc brake and it is useless for the first couple stops. Pretty freaky feeling, really. Once it's all worn in then you can flip yourself over the handlebars as much as you want.
switch the brake system, promax is too basic and is very bad and weak, go for shimano deore 535 hydraulic brakes and you will not be sorry
