My S1 has a stock cowl with an updraft sump. In an effort to reduce weight and hopefully improve engine performance, I removed the alternate air cable and stock air box. I designed/built a new one with an integral bell mouth. My assumption is the airflow into the servo will improve relative to the stock intake, even though the stock intake has crude quasi-ramp directing air into the servo.
I doubt I’ll see anything noticeable for performance, but who knows…. Has anyone on the forum done something similar and what were the results?
I doubt I’ll see anything noticeable for performance, but who knows…. Has anyone on the forum done something similar and what were the results?
![34B010CD-49CE-4E89-A54C-A44F96A27E5D.jpeg 34B010CD-49CE-4E89-A54C-A44F96A27E5D.jpeg](https://cdn.imagearchive.com/biplaneforum/data/attach/74/74921-34B010CD-49CE-4E89-A54C-A44F96A27E5D.jpeg)
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![58D66C58-D4BD-4CC5-B194-F352E473F337.jpeg 58D66C58-D4BD-4CC5-B194-F352E473F337.jpeg](https://cdn.imagearchive.com/biplaneforum/data/attach/74/74923-58D66C58-D4BD-4CC5-B194-F352E473F337.jpeg)
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![2941CC1E-7780-4DA8-8210-41E0CDFA9EDB.jpeg 2941CC1E-7780-4DA8-8210-41E0CDFA9EDB.jpeg](https://cdn.imagearchive.com/biplaneforum/data/attach/74/74925-2941CC1E-7780-4DA8-8210-41E0CDFA9EDB.jpeg)