Speed Sensor for speedometer
Turbo Mini Forums

Hi, has anyone got any pics showing how a mounted / fitted speed sensor for a speedometer?

rear drum or front wheel?

also i need to replace the magnets.. i take it that i should try and get the same size etc as this could affect the signal??

Cheers, Mark.

I made an aluminum bracket that mounted to the brake caliper and cable tied the speed sensor magnet from my mountain bike to the wheel.

I'm going to do re-do it properly now, but it worked to check everything was running as it should.

so brake caliper and brake disc could be ok..

Doesn't the sensor get too hot on the brake caliper?

Team www.sheepspeed.com Racing

Doing mine like Mike's albeit with a threaded sensor through the backplate http://www.turbominis.co.uk/photo/239/

Mine does use GPS for speed, but I have wheel speed sensors for data logging. Although this is easy for me as I have disks on the back.

On the miglia's (with drums) we simply aim the speed sensor at on the wheel studs on the back of the hub, although you will need to modify one of the brake shoes for clearance.

Team www.sheepspeed.com Racing

Good idea Pottsy, sure Mike's setup uses the back of the head of the stud instead of a magnet.

nice - thanks for the link.

think i will have pilfer that idea.

Mine's mounted in the backplate of the rear drum. It picks the signals of the wheel stud heads passing over it.

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[/quote]
Phil, have you got alloy hubs then? Otherwise how does the sensor distingush between the studs and the hub? I guess it works though?!

I ask as this was my concern - with the limited space available trying to keep the stud near the proximity sensor but away from the hub face, without the now long-rotating-stud wiping out bits of brakework!

Dave[/quote]

The sensor has to be within 1mm of the back of the stud, so the hub is probably too far away.

Thread revival.

Could anyone assist me with this, feel like the sensor in the rear drum is the way to go, has anyone got any info on what sensor to use, or what length I need to get at least? any pictures?

Thanks, dan

what you need etc...will depend on what the speedo is and what sensors or triggers it needs.

9.85 @ 145mph
202mph standing mile
speed didn't kill me, but taxation probably will

I'm going to use my dta to read the signal so it can be anything. I like the idea of using the threaded vr style one reading the studs on the rear. I had a quick look but they come in loads of different lengths and prices from £20 to £130. Would be good to know what people have used in the past, can't imagine you've got to spend 130 quid to get one that's reliable?

Try www.digital-speedos.co.uk, they made me a sender unit that mounts on the speedo drive that produced the correct signal/wave for a Stack race dash I was going to use.

Shane

ah thats cool, cheers for that

Depending of your wave requirements I still have the sender unfitted/unused if its of use to you?

Shane

Ah thanks for the offer but I've sorted it now

I made a bracket mounted to the output flange bolts, then just cable tied a magnet to the pot joint. Works well.

If you're using an A series box we stock these http://minispares.com/search/classic/gsd100.aspx