Today we had a conversation with @Dool about idle and higher ambient temperature and an epiphany struck my mind: why don't we force cooling the engine or the oil radatior?
We've all been stuck in traffic during a hot summer day and any air cooled engine tends to overheat in that condition. Even my stock hima used to start sputtering and die occasionally at traffic lights because the engine was way too hot. Since our engine is cooled (partially) with oil and there is an oil radiator already, the idea is to place one or more fan/fans behind the oil radiator. There are plenty of IP67 (waterproof) 12V fans out there.
The easiest way to drive it would be through a simple switch connected to the battery BUT that wouldn't be neither elegant nor precise as solution.
HOWEVER the mighty Red Box has an unused pin that has exactly that function and it's driven via the engine temperature sensor, with a custom threshold of actuation!
It should go like this: above a certain temperature the RB would close a switch connected to a 12V relay and the relay would then in turn power on the fan!
If anyone is interested, the actuation pin is #19. I'll take some measurements of the oil radiator to see possible fan candidates for the purpose!
What do you guys think?
We've all been stuck in traffic during a hot summer day and any air cooled engine tends to overheat in that condition. Even my stock hima used to start sputtering and die occasionally at traffic lights because the engine was way too hot. Since our engine is cooled (partially) with oil and there is an oil radiator already, the idea is to place one or more fan/fans behind the oil radiator. There are plenty of IP67 (waterproof) 12V fans out there.
The easiest way to drive it would be through a simple switch connected to the battery BUT that wouldn't be neither elegant nor precise as solution.
HOWEVER the mighty Red Box has an unused pin that has exactly that function and it's driven via the engine temperature sensor, with a custom threshold of actuation!
It should go like this: above a certain temperature the RB would close a switch connected to a 12V relay and the relay would then in turn power on the fan!
If anyone is interested, the actuation pin is #19. I'll take some measurements of the oil radiator to see possible fan candidates for the purpose!
What do you guys think?