why S10 put pulse sensor into a wheel hub?

[Super T]

Anybody can tell me why? ::26::

thanks in advance


Super T

 

[GrahamD]

My guess is the number of "poles" and the fact that it is magnetic, not a slot type and they can.

It is all tucked away in there out of the mud and grit and stones and stuff.

Forgotten what German company it was sourced from but is "Next Gen".

Be interesting to see whether the others start doing it this way.

 

[bloke]

Just trying to keep it out of harms way ::008::

 

[Twitch]

Touratech makes an ABS Sensor Guard gizzmo for that. They say it's vulnerable. I don't think so. But I think the wire down to the sensor is slightly exposed to a low branch or stump or bush or the like out on the trail.

 

[whisperquiet]

Touratech makes an ABS Sensor Guard gizzmo for that. They say it's vulnerable. I don't think so. But I think the wire down to the sensor is slightly exposed to a low branch or stump or bush or the like out on the trail.

I think Tourtech sells a lot of bling/fluff and some good stuff.............the sensor cover is bling/fluff.

 

[colorider]

I think Tourtech sells a lot of bling/fluff and some good stuff.............the sensor cover is bling/fluff.

I think they offer a lot of solutions for problems that don't exist.......

::003::

 

[markjenn]

Where else would you suggest they put it?

- Mark

 

[EricV]

They didn't really put the sensor in the hub. It's a cover over the sensor ring/rotor. The rotor is bonded/pressed into the wheel hub and has teeth in it that pass by the fixed magnetic sensor to allow it to count pulses, thereby telling the ABS ECU if the wheel is moving at the same speed as the other wheel, or starting to lock up. Fairly standard method. Other brands do it different ways, but the basics are the same.

 

[Venture]

Touratech makes an ABS Sensor Guard gizzmo for that.

Wow, $35.99 for that little gem and a matching trinket for the front. Bling indeed!

 

[fender5803]

Wow, $35.99 for that little gem and a matching trinket for the front. Bling indeed!

I have to look again but is this topic about why the sensor is where it is or a thread about a company selling a protector for part of that system-?? I looked and it seems it is a thread about The Yamaha pulse sensor being in the wheel hub NOT about a cover for the sensor wires. Just saying .... Just saying I'd like to hear about the types of sensors of different manufactures, or not.
::024::

 

[EricV]

Just saying I'd like to hear about the types of sensors of different manufactures, or not.
::024::

Why? What do you really hope to gain? And it would be more accurate to ask what ABS system doesn't have the sensors located in a similar manner to the S10? Virtually all motorcycle and car ABS systems operate this way. No one is going to attempt to alter there S10 to put the sensor somewhere else.

Think about it, you need to identify individual wheel speed. You're going to have to put a sensor pick up at each wheel. The overwhelmingly common method to date is a toothed 'rotor' and a magnetic sensor that counts the teeth as they go by, calculating if the speeds of each wheel match, and altering via the ECU when they don't for TCS or ABS. BMW uses a cut out disk instead of a toothed rotor, but the pick up is doing the same thing and at the same locations, each wheel. Even if you identified a better method, that would not change the fact that this is what we have on the Tenere, and you're not going to alter it w/o disabling the system.

So, it is what it is. We can choose to toss a spendy guard over it, (mostly un-necessary), or be aware that it has it's weaknesses and strengths. For example, you need to take some care when pulling the wheels. If you smack the sensor around, especially the magnetic tip against other metal, it will kill the sensor. Some bikes don't require the sensor to be removed separately when pulling the wheel, you just pull the wheel and it slides out of the area with the sensor rotor free. Yamaha's generally require that you un-bolt the sensor from the housing and set it aside, then as you remove the wheel, you have a cover over the rotor that needs to be removed and set aside before taking the wheel off for a dismount/mount or other work.

As an aside, use caution if you have a BMW shop pull a wheel on your Yamaha. Different methods, and they won't know to remove the sensor first, thinking it stays in place on the bike as they pull the wheel, which is how many of the BMWs are. I had a BMW shop pull my front wheel on the FJR to do a tire swap while I was out of town on a long trip. They damaged the ABS sensor due to yanking on it too hard w/o understanding that it needed to be removed from the housing prior to wheel removal from the forks. They also didn't understand how the diagnostic system works, thinking that an ABS light that stayed on when you fired up the bike meant it was "ok", (The BMW way), rather than a ABS light on after you fired up the bike meant there was a problem. In the end, it cost me $82 for a new sensor.

 

[Old Git Ray]

There seems to be a bit of confusion over how the Yam ABS is configured.

Firstly, it is a Bosch system, as is the BMW one but this is, as stated above, the next generation of systems.
Secondly, the sensor is not magnetic. It is a pick up coil (and therfore probably less knock sensitive).
Thirdly, the wheels have the magnets installed inside them, according to the manual, 46 pairs in each wheel. There is no toothed wheel on this bike.

This extract from the bosch site...http://www.bosch-presse.de/presseforum/details.htm?txtID=4896&tk_id=108&locale=en. explains some of it. The pic on the site is the same one as seen on the S10.

World’s first ABS series built exclusively for motorcycles
Previous anti-lock braking systems for motorcycles were adapted from passenger-car systems, with small technical adjustments made. On the basis of the new generation of Bosch brake control systems for passenger cars, Bosch’s engineering center in Japan has now designed a standalone ABS series for motorcycles. The motorcycle ABS has a modular structure, allowing it to be adapted for a variety of function ranges: from the basic ABS 9 base version to the ABS 9 plus and the ABS 9 enhanced, which uses electronic combined braking system. The latter version makes it possible to brake both wheels, and allows an electronically controlled variable distribution of braking pressure, even when the driver applies only the front or rear brake.

All ABS systems for motorcycles are extremely compact. The pump housing, for example, is now considerably smaller, as it only has to house the control technology for two wheels instead of four. The control unit’s printed circuit board is mounted directly on the hydraulic unit, which increases vibration resistance. Due to shorter brake lines and smaller brake pistons, a recently developed, more compact return pump is sufficient. The result is that the system is now lighter and 50 percent smaller than its predecessor. The brake lever also vibrates less, and the system adapts the braking pressure even more quickly to the coefficient of friction between the wheels and the surface beneath them.
Bosch has been manufacturing antilock braking systems for motorcycles since 1994. There have been numerous improvements and further developments since then, and Bosch has delivered more than 350,000 antilock braking systems for motorcycles.

The picture below, shows a warning written on the inside of the wheel hub on the magnets.

 

[EricV]

Good info Ray. Not that it really matters what type of system is used. Still need some form of sensor at the wheel hub to determine wheel speed. This is the kind of thread that should end up in NEPRT, if this forum had that category. ::010:: Pointless to ask why it's there, as if it could be somewhere else.

 

[newventurer]

More information than I ever need but interesting nontheless. Great to have those of you with this level of technical knowledge on the board. I am going to contemplate this very topic on my ride Whitehorse next summer ::013::

 

[Old Git Ray]

The good thing about this bike it that you do not have to contemplate it (too much ).

S10 riders are safe in the knowledge that come rain, shine, dirt or whatever, the bike is probably one of the best in the world at helping you stop when you want to. ::008::

 

[Swagger]

See now I found all of that thread interesting ... even the bling stuff. Someone asked a question and others jumped right in ... gotta love that.

 

[fender5803]

Thank you Ray much apreciated reply, and thank you Eric.
I am better informed now for sure.
best,
DT