I've invented ABS for disc brake bikes.

[Ridgeway]

Old thread resurrection alert:

I had to drop my commuter bike off at the LBS on Friday and they agreed to give me a loaner for this week. They quickly showed me the temp replacement bike and just mentioned it has ABS…..

You can guess my mission on the return trip home😂

Now although it was dry i did find some fine gravel/gritted areas where i tried to get the front wheel to loose it’s grip and was surprised to see what it could take. In a straight line the (dry road) the braking distance was certainly reduced but i guess on a slippery road surface whilst cornering and just touching the brakes the result would be the same, but then OK you’re on the edge of tyre grip anyway.

You can’t feel the brake modulation as it‘s so fast, probably all the play in the front end and tyre that absorbs it.

Interesting technical development that certainly has a place some where in cycling, commuting for sure with heavy bikes but not too sure after that ?

 

[Profpointy]

Well, now we know for sure that he/she doesn't have the brains of a bishop!

Oi, too much bashing the bishop !

 

[Profpointy]

so your car has two brake pedals , interesting as most don't . I wonder why?

Mine has a pedal which operates all the brakes and a hand operated lever for the rear only

 

[richardfm]

Old thread resurrection alert:

I had to drop my commuter bike off at the LBS on Friday and they agreed to give me a loaner for this week. They quickly showed me the temp replacement bike and just mentioned it has ABS…..

You can guess my mission on the return trip home😂

Now although it was dry i did find some fine gravel/gritted areas where i tried to get the front wheel to loose it’s grip and was surprised to see what it could take. In a straight line the (dry road) the braking distance was certainly reduced but i guess on a slippery road surface whilst cornering and just touching the brakes the result would be the same, but then OK you’re on the edge of tyre grip anyway.

You can’t feel the brake modulation as it‘s so fast, probably all the play in the front end and tyre that absorbs it.

Interesting technical development that certainly has a place some where in cycling, commuting for sure with heavy bikes but not too sure after that ?

Can we have a bit more detail about the ABS and the bike it is on?

 

[figbat]

In a straight line the (dry road) the braking distance was certainly reduced

Compared to what? Can you switch the ABS on and off?

 

[Ridgeway]

Compared to what? Can you switch the ABS on and off?

Same bike, same tyres, same loading, known route and conditions.

 

[Ridgeway]

Can we have a bit more detail about the ABS and the bike it is on?

The brake system is from Blubrake an Italian manufacturer and the system is installed on a Stromer ST5. The basic brake system seems to be the same in terms of caliper, rotor and lever.


View: https://m.youtube.com/watch?v=ljC_nXovZiA&pp=ygUMYmx1YnJha2UgYWJz

 

[Ming the Merciless]

What do the sensors near the wheel look like?

 

[Profpointy]

For me, the big benefit of ABS on two wheels is that it gives you the confidence to brake really really hard without such a risk of locking the front and sliding down the road on your arse, which I did do once on my old motorcycle. Whilst it was wet, unbeknownst to me the road was (likely) greasy too. I'd only been doing a slow town speed in traffic, but braked suddenly, though in my mind not that hard, when it looked like someone pulling out. ABS would likely have saved me.

My much more recent bike did have ABS so if I could overcome my instinct I had the option of grabbing a handful in extremis. I never had the need to put it to the test, and I my instinct might have meant I didn't brake hard enough, but in theory I could.

In a car, whilst you can skid, you can momentarily release then reapply the brakes, so ABS, whilst beneficial, is arguably less important. You don't fall off a car if you skid a bit!

 

[Ridgeway]

What do the sensors near the wheel look like?

Here:

So basically there’s a reference disc located on the brake rotor and that’s where the sensors gets its speed reference from

 

[Ming the Merciless]

So basically there’s a reference disc located on the brake rotor and that’s where the sensors gets its speed reference from

But where does it get its wheels slipping reference from?

 

[Ridgeway]

But where does it get its wheels slipping reference from?

I assume from the rotor and sensor. ABS as far as I know doesn’t detect skids, it detects that a wheel isn’t moving but the vehicle is still in motion, I would guess the same applies here ?

 

[richardfm]

For me, the big benefit of ABS on two wheels is that it gives you the confidence to brake really really hard without such a risk of locking the front and sliding down the road on your arse, which I did do once on my old motorcycle. Whilst it was wet, unbeknownst to me the road was (likely) greasy too. I'd only been doing a slow town speed in traffic, but braked suddenly, though in my mind not that hard, when it looked like someone pulling out. ABS would likely have saved me.

My much more recent bike did have ABS so if I could overcome my instinct I had the option of grabbing a handful in extremis. I never had the need to put it to the test, and I my instinct might have meant I didn't brake hard enough, but in theory I could.

In a car, whilst you can skid, you can momentarily release and then reapply the brakes, so ABS, whilst beneficial, is arguably less important. You don't fall off a car if you skid a bit!

The ABS system in a car can detect the need to release and reapply the brakes quicker than a driver can and can repeat the release/reapply cycle at a greater frequency than the driver can.