Michael Burbidge
Well Known Member
For my first fitting of the FAB to the cowl I had the FAB top plate squared up with the carb so that it was pointing straight forward. When I put the cowl on I found that the FAB inlet was way to the left of the cowl inlet. So I put a plumb on the center of the FAB inlet on top plate and found that it was about 1 inch to the left of the nose wheel leg, which I assume is centered. Here's a picture.
So I then removed the FAB top plated and dropped a plumb from the center of the carb, and it was off to the left of the nose wheel leg by 1 1/4 inch. Here's a picture.
I knew the engine was offset, and it looks like the carb is offset on the sump (O-320 D3G), but I didn't know it was by 1 1/4 inch.
So my question is, in fitting the FAB to the cowl inlet, do I just rotate the FAB top plate on the carb mounting plate until the FAB inlet is centered on the cowl inlet? 1 1/4 inches is enough that the front of the FAB will have to be trimmed at an angle since the centerline will be at an angle.
Is this sounding strange, or normal? Maybe the approach here is to just make that darn thing fit. Do whatever it takes.
Thanks for any insight.
Michael-
![dI8iDlU.jpg](/community/proxy.php?image=http%3A%2F%2Fi.imgur.com%2FdI8iDlU.jpg&hash=c1698b3455abce97f194d3aa546bf7cb)
So I then removed the FAB top plated and dropped a plumb from the center of the carb, and it was off to the left of the nose wheel leg by 1 1/4 inch. Here's a picture.
![wEVyvlU.jpg](/community/proxy.php?image=http%3A%2F%2Fi.imgur.com%2FwEVyvlU.jpg&hash=e20867322deee0b89294043fb94392d2)
I knew the engine was offset, and it looks like the carb is offset on the sump (O-320 D3G), but I didn't know it was by 1 1/4 inch.
So my question is, in fitting the FAB to the cowl inlet, do I just rotate the FAB top plate on the carb mounting plate until the FAB inlet is centered on the cowl inlet? 1 1/4 inches is enough that the front of the FAB will have to be trimmed at an angle since the centerline will be at an angle.
Is this sounding strange, or normal? Maybe the approach here is to just make that darn thing fit. Do whatever it takes.
Thanks for any insight.
Michael-