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Not experienced overheated road brakes, but did once experience an overheated front rim followed shortly by an exploding front tyre whilst braking hard at speed coming off the Col du Glandon. That was quite an experience.
For me braking hard to slow down when needed - partly 'cos I like the fun of going fast and partly because it reduces heat buildup. alternate brakes if you need / want to drag to give each brake chance to recover. At higher speeds the brakes cool quicker ( greater airflow) dragging brakes at slow speeds is the best way to overheat them
Keep cool. Do skids. Locking the wheel means the brakes don't generate any heat. Bingo.
I forgot to update this thread. I went back last Friday to try again. This time there was a new element added. It had rained. Getting up was one of the hardest things I have ever done on a bike. I had wheel spin on every pedal stroke probably loosing me quarter of every stroke. I made it to the top without stopping which I was very pleased with. Descending though was sketchy to say the least. The road has a thin layer of moss in places which when wet meant it was like riding on ice. Fast and hard braking didn’t work at all. Dragging and riding slow worked to a point but it didn’t take long for the burning rubber smell to appear. In the end it was a medium speed and swapping between front and rear brake that felt most efficient / safest although it was very easy to lock the front or rear on the mossy bits. It was great fun though and I can’t wait to do it again.
Interestingly a friend who won’t mind me saying is a terrible descender did it the next day on a disc giant defy and had no problem at all. He braked consistently the whole way down and didn’t suffer any fade.
I've been wondering about this too. Could you try each method of braking and use something like this to check temp of rim?
https://www.amazon.co.uk/BENETECH-Non-Contact-Infrared-Digital-Thermometer/dp/B007Q87J3U
My gf and I were touring in Cuba and had a scary descent from Topes de Collantes. They don't have nice 8-10% gradients like they do in the Alps! More like 30% for miles, and we were on loaded bikes. Just had to keep stopping.
More like 30% for miles,
REEEEEALY? 🙂
Looks like the average is mid-teens depending on what version of the climb/descent you look at
Don't drag your brakes unless you have a "drag brake". Brake hard to scrub speed, allow rims to cool and repeat.
The tandem has a proper drag brake designed for a moped with cooling fins. Not a light option 😉
REEEEEALY?
well it certainly felt like it 🙂
Don't drag your brakes unless you have a "drag brake". Brake hard to scrub speed, allow rims to cool and repeat.
This. Especially them fancy carbon rims. I saw plenty of riders in the Alps who had blown inner tubes due to overheating their rims from brake drag.