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Yes we had this conversation about carb heaters before.
I had oil heaters on my last carbie 900 Monster. They worked to cure icing but only if I switched them on.
It's not that easy to predict the conditions that cause carb icing, so I would nearly always only switch on the warmers once icing had occurred... Hence why I know that they work in icing conditions.
Experiments with oil temperature on my current Monster have convinced me that they would be much more effective when the oil cooler is masked from the air blast.
We also discussed that a temperature switch for the electric warmers is inappropriate, as the icing phenomenon is heavily influenced by humidity as well as temperature, a switch sensitive to exactly the right conditions would probably be very complicated?... Better to just have a manual switch like the oil version.
You were going to rig a repeater light Jeff, to see when the heaters came on. I wagered that they were not switching on when you actually iced up.
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