James Cowling and Plenum for RV-9A

[ksouthar]

I am ready to begin fitting a cowling and have been looking at the James Cowling for my RV9A.

Anyone have experience with them and in particular the RV9 version?

Keith Southard
n162@hotmail.com

[N62XS]

Fitting the Cowlis straight forward, but you will need an extended hub prop. Sam says to use a 4" prop extension, but everyone I talked to did not recommend any type of extension with a CS prop. I'm using a WW151 extended.

The plenum is another story. Calling it a PITA is being kind. One bit of advice, use Van's baffling kit. It will save you time. I was fortunate to benefit from Dave Hamilton's experience on an IO-360A1B. I visited his RV-8 and snapped over 60 digital photos. Even with these reference shots, the fit required a lot of cutting, reglassing and sweat.

I would do the cowl with no question, but the plenum would be copied from a website that uses Van's baffle kit and a fabricated aluminum top.

Thanks,
Robby Knox

[jclark]

Please note that if you are talking about using the cowl for a carbureted engine,


**Will** James now has a cowl that is about the same dimension as the standard Van's cowl but with the circular inlets (3 of them).

James

Originally Posted by Hard Knox

Fitting the Cowlis straight forward, but you will need an extended hub prop. Sam says to use a 4" prop extension, but everyone I talked to did not recommend any type of extension with a CS prop. I'm using a WW151 extended.

The plenum is another story. Calling it a PITA is being kind. One bit of advice, use Van's baffling kit. It will save you time. I was fortunate to benefit from Dave Hamilton's experience on an IO-360A1B. I visited his RV-8 and snapped over 60 digital photos. Even with these reference shots, the fit required a lot of cutting, reglassing and sweat.

I would do the cowl with no question, but the plenum would be copied from a website that uses Van's baffle kit and a fabricated aluminum top.

Thanks,
Robby Knox