flyrotary@lancaironline.net Mailing List Archive

Steve,

What Tracy posted trumps anything I say, as he has the vastly overwhelming experience here. But thought I would weigh in on the subject anyway, just for some variety.

I have tried running with and without air filters and didn't see any noticeable difference in performance. So, I left the filter in place as any small FOD could be very costly. I'm running a K&N conical filter, fed by the left air inlet (approx. 5.5" dia.). The rubber end that has the K&N logo on it faces into the wind. There is a cone-shaped housing with a small hole in the bottom to let any trapped water escape although I try to never fly in the rain. I don't have an alternate air source. This setup has served me well for 100+ hours.

Mark

On Thu, Jul 4, 2013 at 8:08 AM, Stephen Izett <steveizett@me.com> wrote:

Thanks Tracy.

Steve
On 04/07/2013, at 8:47 PM, Tracy <rwstracy@gmail.com> wrote:

On Jul 4, 2013, at 6:18, Stephen Izett <steveizett@me.com> wrote:

Hi Guys

I've got to feed air from a under the spinner to the throttle body.
I'm interested in Ram Air but have some questions.

1. What do we do about a bit of rain getting into the system? I gather ice and snow is a huge problem and some designs have bypasses.

Rain good, just like ADI.   Flight into iceing & snow heavy enough to block intake would probably have crashed you long before the inlet was blocked. bypass not a bad idea but lived without one for 2000 + hours.

2. I take it that filtering is essential. How does water effect filter material? What filter material is best.

On a car, a must. On an airplane, just be careful where you put inlet ( keep it high) and don't taxi behind someone on a dry dusty taxiway.   Never had an air filter.

3. Is there a valve available to purchase to switch between filtered and non filtered ram air?

Cheers

Steve Izett

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