Bike porn

jeeze... I have a whole lot to learn about brakes! (never ridden anything but mechanical rim brakes both carbon and metal rims)

What are the main pros and cons of hydraulics over wires, and the pros and cons of rim vs disc?

I mean it appears that discs would give stronger/more consistent braking on long descents but having never ridden them I'm not clear how much even the pros would notice the difference.

^^^^What are the main pros and cons of hydraulics over wires, and the pros and cons of rim vs disc?

Probably a whole new thread to its self to explain that one!

Interesting Maguras.

I used to own a pair of these old school Magura Racelines. Hydraulic rim brakes. Mainly for XC use. Defo only slightly better that a well set up pair of V brakes at best. But that was going back 10 odd years, Obviously technology will have come on a bit now.

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is well set up hydraulic rims brake the same as having a disc brake with a huge rotor?

is well set up hydraulic rims brake the same as having a disc brake with a huge rotor?

The yellow Maguras above are the only experience I have with Hydraulic Rim brakes. And they are over 10 years old.

I have Hydraulic Disc brakes on my MTB with only a 160mm XC front disc and I can pull endos, sat down, with one finger. I can only imagine the power of a proper Down Hill set up. But they are no way light enough for road use, obvioulsy.

Defo for pure power its Hydraulic Discs all the way.

Surely its even more dangerous to have overly powerful brakes?
If you can endo on an MTB (presumably front sus at least) sitting down, I dread to think of the horrors you would have with hydraulic brakes/discs with the forward position on a TT/road bike...

Surely its even more dangerous to have overly powerful brakes?
If you can endo on an MTB (presumably front sus at least) sitting down, I dread to think of the horrors you would have with hydraulic brakes/discs with the forward position on a TT/road bike...

Thats one of the advantages of Discs is the great modulation. You can squeeze really hard and not lock up. I've found V's can be more bit 'on - off'. Defo no problem on a TT bike.

I want to design some now! Noooooo!

Interesting Maguras.

I used to own a pair of these old school Magura Racelines. Hydraulic rim brakes. Mainly for XC use. Defo only slightly better that a well set up pair of V brakes at best. But that was going back 10 odd years, Obviously technology will have come on a bit now.

You'd think that, but if you look, many top trials riders continue to use maguras such as those on the back.

Although, having not ridden trials for years I couldn't tell you if this was due to the reliability of them, superior power over discs, or the fact that there is no disc to bend on rocks. or all of the above.

You'd think that, but if you look, many top trials riders continue to use maguras such as those on the back.

Although, having not ridden trials for years I couldn't tell you if this was due to the reliability of them, superior power over discs, or the fact that there is no disc to bend on rocks. or all of the above.

True. I've never understood why Trials bikers love Maguras. I know you can set them to be quite spongey pulling the lever almost into the grip with one one finger. But you can also do that with V's to some extent. Obviously a disc on a Trials bike would be too vulnerable.

Although, having not ridden trials for years I couldn't tell you if this was due to the reliability of them, superior power over discs, or the fact that there is no disc to bend on rocks. or all of the above.

As an expert trials rider cough, I'd say it was the last 2.

Unless your disc is almost as big as your wheel, and you have a disc guard.

Damn, thats hot! Mecacycle right?

The whole hydraulic brake issue on road bikes is very interesting. It's been over 15 years since hope (et. al) overtook xtr v-brakes as the brakes to have in MTBing. Why has the take up been so slow on the road side?

okay,

Weight - brakes are a non rotating mass, rims are, but how much lighter would you want to make a carbon / alu rim.

Fit for purpose - how many people experience brake fade / grab on a regular 50 + mile ride (rain or shine) or even during an average club race. What percentage of riders actually kill it down 10 - 20% gradients week in week out.

Conventional alternatives - SwissStops pads, ceramic rims etc. Ceramic rims were the go to for consistent performace in MTBing for ages. I mentioned SwissStops pads because I just upraged to them on my carbon tubs - wow, very powerful and great modulation.

Tyres - I've had 2 tyres delaminate in just 2,500 miles. They've been lightweight vittorias but it's been a major pain. How would normal (lightweight 23c) tyres cope with the extra braking force?

Power / Control - Is there such a thing as having to much power? At the expense of modulation, definitely.

I'm not a naysayer - I just think it's an interesting development.

The whole hydraulic brake issue on road bikes is very interesting. It's been over 15 years since hope (et. al) overtook xtr v-brakes as the brakes to have in MTBing. Why has the take up been so slow on the road side?

okay,

Weight - brakes are a non rotating mass, rims are, but how much lighter would you want to make a carbon / alu rim.

Fit for purpose - how many people experience brake fade / grab on a regular 50 + mile ride (rain or shine) or even during an average club race. What percentage of riders actually kill it down 10 - 20% gradients week in week out.

Conventional alternatives - SwissStops pads, ceramic rims etc. Ceramic rims were the go to for consistent performace in MTBing for ages. I mentioned SwissStops pads because I just upraged to them on my carbon tubs - wow, very powerful and great modulation.

Tyres - I've had 2 tyres delaminate in just 2,500 miles. They've been lightweight vittorias but it's been a major pain. How would normal (lightweight 23c) tyres cope with the extra braking force?

Power / Control - Is there such a thing as having to much power? At the expense of modulation, definitely.

I'm not a naysayer - I just think it's an interesting development.

Yeah good points.

The only issues I can see with Discs on a road bike are: Weight and over heating.

Not only the weight of the lever, caliper hose and disc but also the extra strength required in the fork and hubs. However weight can be lost in a brake surfaceless rim (think STANS rims on MTB's, super duper light).

Discs do tend to get very hot on long draggy downhills. I guess even more so with the speeds road bikes could potentially going.

Less of an issue on 20" but on 26" discs don't feel as solid. When you land you can feel the wheel flex more. Also trials is pretty brutal on disc mounts although better disc mounts and different riding styles mean they are becoming more popular.

Less of an issue on 20" but on 26" discs don't feel as solid. When you land you can feel the wheel flex more. Also trials is pretty brutal on disc mounts although better disc mounts and different riding styles mean they are becoming more popular.

Oh yeah of course, you wouldn't get the flex through the spokes on a Trials bike using Magura Rim brake, as opposed to Discs.

I read (will insert link if i can find it again) that discs on a road bikes were being developed prodominantly as a way of increasing braking performance / saftey due to poor performance of rim brakes on carbon rims in the wet. Weight wasn't seen as a huge prohibiting factor as the extra weight of the brakes can be compensated for elsewhere on the bike, as it's not that hard to build a bike to the minimum UCI limit. I'll be interested to see how 'aero' they can be made.

Shirly if discs have been made UCI legal for cross racing it's only a matter of time until the UCI extend that to the road.

Berti swapped bikes in the mountain stages last TdF. If I'm not mistaken, as a way of swapping front and rear to alu braking surface wheels. So even the pros, with the best kit, arent 100% convinced about long desents, braking on carbon rims.

I went for carbon tubs due to concerns about carbon clincher sidewall/braking surfaces overheating and spilling tyres.

On my cross bike with discs I'd go for clinchers 100%, and run them tubeless with Stans etc- no downside anymore.

Cross bike will have hydraulic brakes as of this weekend- Hope X2's.

Certainly my Hydraulic discs on my MTB preform almost as well in the wet as dry. It amazed me the first time it properly pissed it down.

On my cross bike with discs I'd go for clinchers 100%, and run them tubeless with Stans etc- no downside anymore.

Cross bike will have hydraulic brakes as of this weekend- Hope X2's.

Apart from burping.

For serious racing, tubs remain the only choice due to the significantly lower pressures you can run with them which equates to significantly more grip.

True, if I were racing- I'm much more likely to use the bike for light XC rather than cross racing though.

Damn, thats hot! Mecacycle right?

I didn't get many informations from the previous owner, but the frame builder is Solander (toulouse, france). So it's not a mecacycle but clearly inspired, the frame is from the late 80's and pretty light and the lugs are very well polished too.

Interesting Maguras.

I used to own a pair of these old school Magura Racelines. Hydraulic rim brakes. Mainly for XC use. Defo only slightly better that a well set up pair of V brakes at best. But that was going back 10 odd years, Obviously technology will have come on a bit now.

i still have one set and it works fine ;)

porn thread, guys..

^ exactly

@Itsisaboutthebike - you don't have to quote every single post you're referring to
AND you have an extra "s" in your screen name

you're welcome