the thing that did it for me is realising that there is more to it than just pulling the brake and fastening the calliper bolts - one has to gently twist the calliper with slightly loose bolts until it doesn't squeak and then carefully tighten the bolts without changing the calliper's orientationSo my son in law says his breaks are not as good as they were and they squeal.
So i bleed the brakes use 120 grit on the rotor and clean the pad with brake cleaner etc.
The brakes are effective but squeak just as bad as before.
Can anyone offer advise?
You mean hold the brake on gently, turn the wheel and twist the caliper at the same time until no-squeal?the thing that did it for me is realising that there is more to it than just pulling the brake and fastening the calliper bolts - one has to gently twist the calliper with slightly loose bolts until it doesn't squeak and then carefully tighten the bolts without changing the calliper's orientation
i'm a complete newbie - but here goes: I squeeze the brake hard - on my cheap bike that results in a newly attached calliper scratching/touching on a specific part of the disk - then with the bolts slightly loose I carefully twist the calliper until the noise goes away and carefully tighten the bolts - on the whole it works, but I think I might try your rubber band suggestion - you mean partially squeezed break - but how do you know when it is orientated right then? - on some very steep hills here I find the brake screeches after hard braking.You mean hold the brake on gently, turn the wheel and twist the caliper at the same time until no-squeal?
Do you hold the brake on with an elastic band?
Woo...The condition sounds quite extreme to me just for one night.Sadly I think that the issue is that a high percentage of the area is made up of a very very fine sand. After it dries on the bike from a wet ride, it is like brushing away flour. It's really hard on brakes, chains and bearings. It just destroys everything. Chains don't last much longer than the brake pads. No one ever believes that you can easily wreck a chain in 100-150miles if the riding conditions aren't good. In the summer the sand just becomes a powdered dust, and in the winter it becomes fine rubbing compound/grit. Even today after washing the bike, I could feel it in the console control switches, and the battery lock. Bosch should design a rubber blank to cover the lock. It's a constant battle trying to keep it working properly.
It's conditions here are also very acidic, and it corrodes things very quickly, which is why I clean the bike after every ride. Last night I didn't and this was the result that greeted me this morning. You can also see just how fine that the sand is from this photo. It's the white dry stuff.
I would normally thoroughly wash the chain off, blow it dry using an air line, then oil it with duck oil, blow it out once again with the air line, then use a wet lube on it at this time of year. Hard to believe that this is the result of just a 20 mile ride, and a bike left un clean for 15hrs.
You might also just be able to see how scratched and scored that the discs are as well from the abrasive action.
Sadly I think that the issue is that a high percentage of the area is made up of a very very fine sand. After it dries on the bike from a wet ride, it is like brushing away flour. It's really hard on brakes, chains and bearings. It just destroys everything. Chains don't last much longer than the brake pads. No one ever believes that you can easily wreck a chain in 100-150miles if the riding conditions aren't good. In the summer the sand just becomes a powdered dust, and in the winter it becomes fine rubbing compound/grit. Even today after washing the bike, I could feel it in the console control switches, and the battery lock. Bosch should design a rubber blank to cover the lock. It's a constant battle trying to keep it working properly.
It's conditions here are also very acidic, and it corrodes things very quickly, which is why I clean the bike after every ride. Last night I didn't and this was the result that greeted me this morning. You can also see just how fine that the sand is from this photo. It's the white dry stuff.
I would normally thoroughly wash the chain off, blow it dry using an air line, then oil it with duck oil, blow it out once again with the air line, then use a wet lube on it at this time of year. Hard to believe that this is the result of just a 20 mile ride, and a bike left un clean for 15hrs.
You might also just be able to see how scratched and scored that the discs are as well from the abrasive action.