Radiator Heat Alarm 1987 GL1200i


Information and questions on GL1200 Goldwings (1984-1987)
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ErnieB
Posts: 10
Joined: Thu Jun 03, 2010 8:56 pm
Location: Smithville, Texas
Motorcycle: 1987 GL1200i INT

Radiator Heat Alarm 1987 GL1200i

Postby ErnieB » Thu Jun 24, 2010 12:36 pm



OK. Dumb question fellows but so far everyone has tolerated them from this novice and I have accomplished a lot from your expert advise and the 'How To' Section. Have rebuilt all calipers, replaced brake pads, replaced timing belts, flushed radiator and replaced the hoses.

Now I want to add an overheat alarm and install lights and a 'buzzer' if engine reaches an overheat condition. My reason is that I am guilty of burning an engine many years ago and I have remained really gun shy about heat.

Can this animal be incorporated by tying into an existing circuit/sensor/relay to accomplish what I want to do?

Thank you for your continued advice.

ErnieB



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WingAdmin
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Re: Radiator Heat Alarm 1987 GL1200i

Postby WingAdmin » Thu Jun 24, 2010 1:05 pm

There are two heat-sensing devices on your bike already: the fan thermostat, which switches the fan on when the bike reaches a certain temperature, and the temperature gauge sensor, which sends the signal to the temperature gauge on your dash.

You could hook something into the second sensor - however, it would not be easy to do. It currently sinks power from the 7 volt regulator to ground. It is a variable resistor that closes (presents less resistance to ground) as the temperature increases. the problem is in hooking a second device into it, that will not affect the existing temperature gauge (and potentially the fuel gauge, which also runs off the 7 volt regulator).

Probably the easiest way would be to install a third-party temperature sensor that incorporates an alarm of some sort, and just fasten its temperature sensor to an appropriate part of the bike (water pump housing or coolant tubes, for instance). It won't read the exact temperature of the coolant, but you can calibrate the alarm to go off at whatever temperature you deem to be "too high."

ErnieB
Posts: 10
Joined: Thu Jun 03, 2010 8:56 pm
Location: Smithville, Texas
Motorcycle: 1987 GL1200i INT

Re: Radiator Heat Alarm 1987 GL1200i

Postby ErnieB » Thu Jun 24, 2010 5:22 pm

Thank you. That is most helpful.
Fantastic site.
Some of you fellows have seen and done it all.

ErnieB


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