1985 Goldwing speed sensor


Information and questions on GL1200 Goldwings (1984-1987)
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sthumper
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Joined: Sat Apr 27, 2013 12:21 pm
Location: Columbus, Ohio
Motorcycle: 1985 Goldwing Aspencade

1985 Goldwing speed sensor

Post by sthumper » Sat Apr 27, 2013 12:37 pm



Does any know if the 2000 Valkerie speed sensor will work on 1985? Mine quit working and hard to find this part and heard that a 2000 Valkerie would. Does anyone know if these will interchange or know where I could pick one up at? Does the 1982 or 83 sensors work for the 85? What other options do I have to get this back working? Thanks!!!



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WingAdmin
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Location: Strongsville, OH
Motorcycle: 2000 GL1500 SE
1982 GL1100A Aspencade (sold)
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2007 Aspen Sentry Trailer

Re: 1985 Goldwing speed sensor

Post by WingAdmin » Mon Apr 29, 2013 8:56 pm

sthumper wrote:Does any know if the 2000 Valkerie speed sensor will work on 1985? Mine quit working and hard to find this part and heard that a 2000 Valkerie would. Does anyone know if these will interchange or know where I could pick one up at? Does the 1982 or 83 sensors work for the 85? What other options do I have to get this back working? Thanks!!!
I don't know what the 2000 Valkyrie had for a speed sensor, but you need something that will provide a specific number of electrical pulses per wheel rotation. This is done with a toothed ring and an inductive pickup. When a tooth passes by the pickup, a tiny current is created, which the speedometer picks up and translates into speed. If the replacement sensor doesn't have the exact same number of teeth as your original one, the speed readout will be inaccurate.

dutchwing
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Location: Leeuwarden, Fryslân, Netherlands
Motorcycle: 1987 GL1200A Aspencade
1983 GL1100 Aspencade
1982 GL1100A Customized
1981 GL1100D Sidecar

Re: 1985 Goldwing speed sensor

Post by dutchwing » Thu May 09, 2013 5:26 am

Disassambled my speed sensor yesterday. Did not find any toothed ring or so. Just a cylindrical magnet, driven 1:1 by the little geared drive on the left side of the wheel. In my case the electrical components (a pickup, two or three capaciters, maybe two resistors and a transistor or so) were worn by moisture. They were not intieraly covired in resin... Would there be anyone capable of backwards engineer this simple electronics? Put that in an empty case and we have a new speed sensor! :-)

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virgilmobile
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Motorcycle: 1988 GL1500 I
Previously owned
78 GL1000
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Re: 1985 Goldwing speed sensor

Post by virgilmobile » Thu May 09, 2013 2:14 pm

By your description of the parts,I can describe how it works.
The pickup coil will generate a very small voltage as the magnet is rotated past it.
It's output should switch from a positive to a negative voltage.....very small voltage...The transistors amplify this voltage change and the final transistor is used as a switch to output a pulse from 0-5 volts.
Very similar design as the ignition system.
The components themselves should be good with the exception of the pick up coil.It may have corrosion attacking the connecting wires.
Other than the pick up coil,each part can be replaced and the PC board cleaned and repaired.
Usually the electrical parts are OK and just the magnet is not turning with the wheel.
Someone mentioned a loose retainer nut.

This is all my theory as I have never seen this device or it's insides...Can you post some pictures?
I can help in testing methods.

Also,remember,this was designed with 80's technology....A new parts exists that might be able to replace all those discrete parts....I'm thinking of a Hall Effect Sensor....Simply gut all the parts,position the sensor,connect to ground,the 5 volts input and pulse output.
These are common parts in cheap computer fans....it's the control switch on the PC board.

motorcyclemedic
Posts: 31
Joined: Wed Mar 10, 2010 9:52 am
Location: Anchorage alaska
Motorcycle: 1975 GL1000, 1985 GL1200A Aspy

Re: 1985 Goldwing speed sensor

Post by motorcyclemedic » Sat May 18, 2013 10:38 am

Hi-- My name is Dennis, in Anchorage Ak- I don't know about the 2000 Valkrie sensor, but I got a new one off Ebay for a 97 valkrie 1500 (Ithink) and it worked perrfectly!!! All I had to do was change the connector- wires were the same, but I couldn't get the pins out of the connector block- no matter because the blocks are different- so you would use your connector and short run of wire from your old sensor- you need to be good at electrical repair/wire soldering and the use of heat shrink to make it all weather proof, but the results are worth it- my speedo is back to normal as is cruise control, turn signals, auto volume ect- The part is identical except for the plug!! I think i got it for $50!! (new) So, I'm letting the cat outta the bag- The valkrie speed sensors look like a good fit for the 84-87 1200 aspencade. Any body else tried this fix?? Dennis- PS its 18 May, and SNOWING here!! crap!!!

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Kalamata
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Joined: Fri May 10, 2013 5:51 pm
Location: Jersey City, NJ
Motorcycle: 1984 GL1200A Aspencade

Re: 1985 Goldwing speed sensor

Post by Kalamata » Mon May 20, 2013 8:48 pm

motorcyclemedic wrote:Hi-- My name is Dennis, in Anchorage Ak- I don't know about the 2000 Valkrie sensor, but I got a new one off Ebay for a 97 valkrie 1500 (Ithink) and it worked perrfectly!!! All I had to do was change the connector- wires were the same, but I couldn't get the pins out of the connector block- no matter because the blocks are different- so you would use your connector and short run of wire from your old sensor- you need to be good at electrical repair/wire soldering and the use of heat shrink to make it all weather proof, but the results are worth it- my speedo is back to normal as is cruise control, turn signals, auto volume ect- The part is identical except for the plug!! I think i got it for $50!! (new) So, I'm letting the cat outta the bag- The valkrie speed sensors look like a good fit for the 84-87 1200 aspencade. Any body else tried this fix?? Dennis- PS its 18 May, and SNOWING here!! crap!!!
Thanks for the info motorcyclemedic. Don't need it right this sec, but always good to know.
Jose

Current Ride:
1984 GL1200 Aspencade
1999 Kawasaki Vulcan 800

Previous Bikes:
1982 Yamaha Seca 750
1986 Honda Rebel 250
1975 Honda CB360T

owaace
Posts: 6
Joined: Mon Aug 31, 2009 5:51 pm
Location: Owatonna, MN
Motorcycle: 1985 GL1200A

Re: 1985 Goldwing speed sensor

Post by owaace » Thu Jun 01, 2017 11:43 am

It works great!

During a bit of internet research, I found out that the sensor from a '97-to '04 Valkyrie had the same 5 digit part number prefix as the GL1200. Honda, uses the first five digits of a part number as the main component, the next three digits are the car/bike model, the last ones are the modification or release. The Valkyrie speed sensor connector is different than my 85 GL1200A, but with a bit of simple electrical work, (either crimp or solder, soldering is much more reliable) I was back in on the road.

The wires are;
Black/Brown 12 VDC +
Black/Yellow Pulse Signal 5 VDC
Green/Black Ground

The order is the also the plug connections.

I was unable to test the 5 VDC pulse signal from the replacement sensor using my digital multi-meter as discussed earlier in this thread. But I did rig up a simple wiring adapter using three .100 X .020 female spade connectors and solid 16 gauge copper wire to test the unit on my bike. Cut the wire into 5 inch lengths and strip off 1/4 inch of insulation on both ends. Crimp on the small spade connector to one end of each wire. My connectors were uninstalled so I use electrical tape to insulate one connector to prevent a possible short.This would be the middle connection, the signal. Insert the connectors onto the bikes harness male plug. Insert the bare wire of each connecting wire into the respective location of the sensor's female plug. Note the wire colors. Middle to middle is easy, but if you cross the positive and negative, you got a short with possible damage to your bike electrical system. Double check you connections before you turn on your bike.

With the front tire elevated off the ground, turn on your bike to the run position, let the display finish it's check, now spin the tire. The display will show a low speed.

I hope this helps other riders keep their older bikes from the scrape yard.

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coolrogue1
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Motorcycle: 1985 GL1200 Interstate

Re: 1985 Goldwing speed sensor

Post by coolrogue1 » Sun Jun 04, 2017 10:00 pm

dutchwing wrote:Disassambled my speed sensor yesterday. Did not find any toothed ring or so.
That would be because the toothed ring is on the wheel. Sarcasm intended HA!
Sam

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Rednaxs60
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Location: Victoria, British Columbia, Canada
Motorcycle: 1985 GL1200 LTD, 2008 GL1800

Re: 1985 Goldwing speed sensor

Post by Rednaxs60 » Mon Jun 05, 2017 9:49 am

Here's some light reading regarding the speed sensor for the '85.

viewtopic.php?f=12&t=28993
viewtopic.php?f=5&t=35786&p=215610#p215610

If the speedo is not working there will be other amenities such as cruise that will not work as well.

Hope this helps.

Cheers


"When you write the story of your life, don't let anyone else hold the pen"

Ernest

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