Sinergy,

Your cut out on the cowl around the cylinder looks good for air flow, however, I'm wondering why more people with singles in 260's don't block off the portion of the cowl around the prop and spinner. It would seem that a lot of the air would enter this area and pass over and around the motor. The reason I ask is that I'm getting a new Extra 260 and 85cc motor and want to make certain I've got max airflow past the cylinder for good cooling.

Can anyone say if blocking off around the spinner would be necessary or a good idea for cooling purposes in a 260 with a single.

Thanks - Jaketab