1985 Goldwing speed sensor


Information and questions on GL1200 Goldwings (1984-1987)
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sthumper
Posts: 1
Joined: Sat Apr 27, 2013 12:21 pm
Location: Columbus, Ohio
Motorcycle: 1985 Goldwing Aspencade

1985 Goldwing speed sensor

Postby 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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Joined: Fri Oct 03, 2008 4:16 pm
Location: Strongsville, OH
Motorcycle: 2000 GL1500 SE
1982 GL1100A Aspencade (sold)
1989 PC800 (wife's!)
1998 XV250 Virago (sold)
2007 Aspen Sentry Trailer

Re: 1985 Goldwing speed sensor

Postby 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
Posts: 11
Joined: Wed May 08, 2013 10:08 am
Location: Leeuwarden, Fryslân, Netherlands
Motorcycle: 1987 GL1200A Aspencade
1983 GL1100 Aspencade
1982 GL1100A Customized
1981 GL1100D Sidecar

Re: 1985 Goldwing speed sensor

Postby 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
Posts: 7659
Joined: Sun Sep 19, 2010 5:39 pm
Location: Denham Springs,La.
Motorcycle: 1988 GL1500 I
Previously owned
78 GL1000
81 GL1100
82 GL1100 I
83 GL1100 I
83 GL1100 standard
84 GL 1200 I

Re: 1985 Goldwing speed sensor

Postby 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

Postby 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
Posts: 15
Joined: Fri May 10, 2013 5:51 pm
Location: Jersey City, NJ
Motorcycle: 1984 GL1200A Aspencade

Re: 1985 Goldwing speed sensor

Postby 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


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