Digital speedometer

[Diseasedfern]

Hey all so I bought this digital speedometer that runs using a hall sensor and connects to an ignition coil but I'm having trouble getting it installed. Do I need some sort of adapter for this hall sensor? Secondly wtf is a hall sensor! Im worried that i may have shot myself in the foot by not doing my homework before buying. I pasted the link below to show you guys the specs.

http://www.ebay.com/itm/Digital-Cockpit-Speedometer-Tachometer-Fuel-Gauge-Dash-Speedo-Custom-Tach-SP3-/230680414232?pt=Motorcycles_Parts_Accessories&hash=item35b59fc818&vxp=mtr

Thanks guys 

[ThatOtherGuy]

http://en.wikipedia.org/wiki/Hall_effect_sensor

[weedahoe]

post a copy of the instructions or wiring info

[ThatOtherGuy]

I should add a funny story about the Hall Effect Sensor in the crummydore (its a bogan GMH car in Australia for you Americans, you guys imported a 2 door version as a chevrolet some time ago).

Traveling interstate with the whole family aboard (including mother in law, she is a dear though), been about 8 hours in the car and it just stops as we're going down a hill in the middle of nowhere.  Had to ring emergency services to get a signal to get onto the NRMA (like AAA in the US).  Mechanic eventually turns up, I tell him what happened and he goes to his vehicle and brings back a water bottle and proceeds to spray water on the fan belt area at the front of the engine.  Asks me to start the car after checking the battery had enough charge.  Car starts first kick.  Apparently there is a Hall Effect Sensor in the fan belt area that controls the whole engine management system.  If it overheats, the engine shuts down.  Throwing water on it cools it down so it starts working again.  So next day with another 800kms or so behind us, car stops again.  So I tip some water over the offending area and car starts first time.  Car never did it again after those two times in 7 years of driving it.  Weird.

Anyway so back to the job at hand.  The Hall Effect Sensor sounds by the description to be necessary to monitor wheel speed/ distance traveled which will give the odometer and speedo the information it needs to run accurately.  I'd be curious to know if you can program in a roll out figure (ie how far the tyre rolls in one revolution) to get absolute accuracy, this is like how bicycle speedos work.  The pickup of the coil will provide information for the tacho to know engine revs, ie how many sparks per minute = revolutions.  The rest of the indicators are obviously going to come from the wiring loom.  If a Hall Effect Sensor was not provided with the kit, you can rig one up by buying a bicycle computer and use the pickup and magnet to provide the signal circuit, just depends on whether the unit needs a simple circuit to open and close or a voltage spike to trigger it.  If the former, the pickup and magnet should be sufficient.  If the latter, you will need to provide a voltage source to one side of the pickup and draw the signal from the other side to go to the unit.

As weedahoe said, post up the instructions and wiring diagram and we might be able to be more definite.

[mass-hole]

I should add a funny story about the Hall Effect Sensor in the crummydore (its a bogan GMH car in Australia for you Americans, you guys imported a 2 door version as a chevrolet some time ago).

It was a Pontiac GTO, the Pontiac G8 was the newer version but had 4 drs. Never mind that it had a 400hp 6L v8, it was a very nice car. one of the most comfortable long distance cars ive ever driven and has some of the nicest bucket seats you will ever find. I miss that car so much.

[ThatOtherGuy]

I should add a funny story about the Hall Effect Sensor in the crummydore (its a bogan GMH car in Australia for you Americans, you guys imported a 2 door version as a chevrolet some time ago).

It was a Pontiac GTO, the Pontiac G8 was the newer version but had 4 drs. Never mind that it had a 400hp 6L v8, it was a very nice car. one of the most comfortable long distance cars ive ever driven and has some of the nicest bucket seats you will ever find. I miss that car so much.

I thought it was the chev, no worries, all owned by the same company in the end.

[bombsquad83]

Looks like a cool little unit there.  Shouldn't be too terrible to get it working...  Adidasguy is the wiring guy around here.

[seamax]

looks like a KOSO for half the price. Keep us updated on how to install the bad boy.

[Big Rich]

The hall sensor will mount somewhere on the fork leg near the brake caliper, and a magnetic bolt will replace a bolt holding down your brake rotor. Before worrying about how to install the sensor, make sure the included magnetic bolt has the same thread pitch & length as stock.

There should be a small chart with the directions to get you in the ballpark with the speed / odometer ratio. The best way to confirm the reading is with a GPS - but don't try to match up the speeds. Instead, go with the mileage. Trying to match speeds between two readouts takes a little bit of much needed concentration, but after riding 2.5 miles you can match up mileage at a stop sign.

[Diseasedfern]

Okay guys so I uploaded the Schematics for the Digital Speedometer!! Yes I know it is sideways nothing I could do to fix it Let me know what you guys think!!


http://i1277.photobucket.com/albums/y487/Diseasedfern/speedometerschemetic_zps85f5facc.jpg

or

http://s1277.photobucket.com/albums/y487/Diseasedfern/?action=view&current=speedometerschemetic_zps76abb8b5.jpg

sorry kinda new at photobucket

thanks guys hope this helps

[bobcat]

so do you just stick the magnet onto the coil? and i'm assuming the wiring loom is to read the fuel / neutral etc?

[Big Rich]

Bobcat, the magnet is for the speedometer sensor. There is a specific wire for the tachometer - it can be hooked up to a coil lead, wrapped around a spark plug wire, etc.

[jpaytoncfd]

This is a little old but I want to know if you ever got this thing working? How does it look? I have been looking at the different options. I was currently thinking of the honda f4i gauges. theres plenty of documentation of putting them on other bikes.

My biggest thing is the speed sensor. I was thinking a rotary sensor spun by the needle that does to the speedo. or removing the speedo cable and sending the hall effect sensor in the hole on the axle. I dont know what that really looks like inside or if the sensor would pickup motion from the gear.

[jpaytoncfd]

Found the answer to my own question,
http://www.dakotadigital.com/index.cfm/page/ptype=product/product_id=242/category_id=568/home_id=-1/mode=prod/prd242.htm

[seamax]

Found the answer to my own question,
http://www.dakotadigital.com/index.cfm/page/ptype=product/product_id=242/category_id=568/home_id=-1/mode=prod/prd242.htm

So does that gizmo convert a pulse from the speedometer cable to be use for Electronic Speedometers? Also which of the 4 adaptors would work for our bikes?

[jpaytoncfd]

So does that gizmo convert a pulse from the speedometer cable to be use for Electronic Speedometers? Also which of the 4 adaptors would work for our bikes?

your current speedo is mechanical. Gears at the front wheel spin a flexible needle inside a tube. the other end of that needle spins gearing inside the speedo. the faster the needle spins the further it pushes the gauge needle up.

That sensor basically has a bunch of magnets around a hub, the needle that was plugged into the back of the speedo spins the hub and makes those magnets pass by a hall sensor that is built in making a pulse wave output that the digital gauge can sense. I think that gauge must be adjustable for it to be universal but if not you will need to get a speedohealer too. However to be cost effective just mount that hall sensor on your fork and the magnet on the wheel so the magnet passes as close to the sensor as possible. The more magnets you put on the wheel the more accurate your speed will be.

Also, I do not know which one to use. You would have to ask them. however I think the only difference is the freq. per revolution. which the speedo should compensate for so it wouldn't matter. The thread size and depth is the same on all of them.

[seamax]

So does that gizmo convert a pulse from the speedometer cable to be use for Electronic Speedometers? Also which of the 4 adaptors would work for our bikes?

your current speedo is mechanical. Gears at the front wheel spin a flexible needle inside a tube. the other end of that needle spins gearing inside the speedo. the faster the needle spins the further it pushes the gauge needle up.

That sensor basically has a bunch of magnets around a hub, the needle that was plugged into the back of the speedo spins the hub and makes those magnets pass by a hall sensor that is built in making a pulse wave output that the digital gauge can sense. I think that gauge must be adjustable for it to be universal but if not you will need to get a speedohealer too. However to be cost effective just mount that hall sensor on your fork and the magnet on the wheel so the magnet passes as close to the sensor as possible. The more magnets you put on the wheel the more accurate your speed will be.

Also, I do not know which one to use. You would have to ask them. however I think the only difference is the freq. per revolution. which the speedo should compensate for so it wouldn't matter. The thread size and depth is the same on all of them.

Thanks. If one of these adaptor/sensor work directly for the GS then I rather go that way. I like clean installs and would rather not run additional wires or magnets down to the wheel. Will look into this for a winter project.

[jolt77]

Thread resurrection!

Did anybody find out if these adaptors work on one of these eBay gauges?