Edit: I changed this to be controlled with a push/pull control cable instead.
I will be using a TCW linear servo and a butterfly valve to control airflow to the oil cooler. This was a simple install with a single screw to attach the servo pivot point to the firewall.
![](https://airplane.allanglen.com/wp-content/uploads/2023/03/pxl_20230314_0247345172814041572774337848.jpg)
The valve works well with the baffle that I added to the oil cooler mount.
![](https://airplane.allanglen.com/wp-content/uploads/2023/03/pxl_20230314_0247245644361568602730088294.jpg)
![](https://airplane.allanglen.com/wp-content/uploads/2023/03/pxl_20230314_0248154301026524325672344015.jpg)