How our speedo sensor works

[hackers2r]

My bike is an S2R 800.  I need to know the magnets used to trigger the speedo sensor on my bike.  Or the strength of the magnet.  Or some way to find out how to trigger the sensor.  I want to correct the difference in mileage when my cluster was replaced.  Thanks.

[ducpainter]

My bike is an S2R 800.  I need to know the magnets used to trigger the speedo sensor on my bike.  Or the strength of the magnet.  Or some way to find out how to trigger the sensor.  I want to correct the difference in mileage when my cluster was replaced.  Thanks.

Sorry can't help you.

It's actually illegal in most states, even though you're trying to accurately represent mileage.

[Howie]

It is a hall effect sensor,  puts out a digital signal.

[Speeddog]

No magnets, the sensor triggers off of the steel pegs that are attached to the rear brake disc.

[hackers2r]

^That's what it looked like to me but just wanted to be sure.  Any idea what kind of steel?  This should be fairly straightforward seeing as how simple the setup is.

[Speeddog]

As long as it's mostly Iron, the sensor will like it.

Stainless Steel and Titanium do not work.

Unless it's just burning you up, it's not worth the trouble in my opinion.

[hackers2r]

Thanks...unfortunately it is doing just that...annoying me.  I think I've figured out an efficient method though.  Last question, anyone have any suggestions on how to not damage the battery while performing this task over many hours?  Can I just keep a trickle charger attached, will it do the job?  Thanks. 

[Drunken Monkey]

If you wish to stay inside the guidelines set by federal law, You should definitely NOT:

Disconnect / pull the fuse for the headlight and taillights
Keep the bike on a trickle charger to keep the bike on, but not in a state that drains the battery
Figure out a jig / whatever to keep a rotating bit of metal (run off an electric drill) sweeping past your speedo sensor.

Old school way was just to drive your speedo cable vie a drill in a vice clamp.

Now you need a clamp for the sensor and a clamp for the drill.

Damn "progress"

[Buckethead]

This thread is giving me 80's flashbacks.

[stopintime]

My bike is an S2R 800.  I need to know the magnets used to trigger the speedo sensor on my bike.  Or the strength of the magnet.  Or some way to find out how to trigger the sensor.  I want to correct the difference in mileage when my cluster was replaced.  Thanks.

Hey - is that you? The Ron?

[Howie]

Or you could just feed it the appropriate square wave signal with a signal generator.  Unless you are only adding a few miles you will be spending many many hours.  That is, assuming it will even work.  I wonder, does the signal even work if the key is on but the engine is not started since the immobilizer will time out?  I guess you will find out if you try.  Oh, disable the fuel pump too.

Or listen to Drunken Monkey, Speeddog and Humorless dp.

[rideserotta]

This thread is giving me 80's flashbacks.

Cameron: The 1961 Ferrari 250GT California. Less than a hundred were made. My father spent three years restoring this car. It is his love, it is his passion.

Ferris: It is his fault he didn't lock the garage.

GREAT movie!

[junior varsity]

don't mess with the speedo. its going to raise more caution flags in the future relating to the bike's legitimacy than you would ever want.

imagine hearing a stranger try to explain to you how the gauges are different but the mileage is close to correct because you hooked up some devices to put fake miles on... sounds odd? its not only odd, but against the law and would subject you to many potential fraud/deceptive trade practice/etc claims