Temp Alarm Development report.
Posted: Sun Nov 16, 2008 8:53 pm
Some of you may be aware that over the past 2 months We have with the help of 2 B/F members been trying to produce a cheap "add on" to the Low Coolant Alarm that will warn you that your Cylinder head temp is reaching critical levels. This is a extreamly simple "add on" consisting of a Bi Metal thermostat switch which connects into the Low Coolant Alarm sensor wire. We tried 3 thermostats 90/100/110 degree C. The 100 C switch seemed ideal and would sound a warning if the head temp ever reached this temp. The downside was that, whilst running this temp was rarely reached, but on stopping the temp rises and would set the alarm off on restarting. No big deal you might think..the problem was it could take 20 mins for the switch to drop down to a low enough temp to reset itself. So, that was no good....The answer seems to be to fit the 110 C switch and then forget about it. 110 degrees seems to still be a safe temp to reach and at this temp your temp gauge will still not have moved from it's 11 o'clock position. So by all means fit one of these and treat it as a "Armageddon" warning device. Of course you need to have a Low Coolant Alarm in the first place. I would be happy to put a small kit together and supply them as cheap as possible. But it is such a simple device and the componants can be bought for about £3. Again I will be happy to make details of what to get and where from and how to, to forum members.
All this caused us to look for a more sensitive/accurate switch..We have not been able to come up with one that will stand the heat/vibration at a sensible price.
What we have managed to do is get the Engine Saver company and the Engine Watchdog TM-2 company to put their tecnology together and we have produced a combined unit that covers...Low Coolant Alarm.....Digital temp gauge with High Temp Alarm......Low Oil Pressure Alarm.
If there is any member out there who is considering fitting these alarms as separate units (a separate Low Coolant Alarm & a separate TM-2) these would cost about £125....as one of the companies has donated a couple of "test samples" for evaluation. It would be good if a B/F member with a bit of Bongo experience would step forward and fit/evaluate/report on this new product. Anyone interested please PM me. When this has been done I will put up a new post to that effect.
BIG Thanks are due to Helen&Tony...&...francophile1947 for all the testing they have done to get this project to where it is. Their input has been invaluable
I will post a photo of the new system shortly.
All this caused us to look for a more sensitive/accurate switch..We have not been able to come up with one that will stand the heat/vibration at a sensible price.
What we have managed to do is get the Engine Saver company and the Engine Watchdog TM-2 company to put their tecnology together and we have produced a combined unit that covers...Low Coolant Alarm.....Digital temp gauge with High Temp Alarm......Low Oil Pressure Alarm.
If there is any member out there who is considering fitting these alarms as separate units (a separate Low Coolant Alarm & a separate TM-2) these would cost about £125....as one of the companies has donated a couple of "test samples" for evaluation. It would be good if a B/F member with a bit of Bongo experience would step forward and fit/evaluate/report on this new product. Anyone interested please PM me. When this has been done I will put up a new post to that effect.
BIG Thanks are due to Helen&Tony...&...francophile1947 for all the testing they have done to get this project to where it is. Their input has been invaluable
I will post a photo of the new system shortly.
