StanFoster
Active Member
- Joined
- Nov 16, 2003
- Messages
- 17,139
- Location
- Paxton, Il
- Aircraft
- Helicycle N360SF
- Total Flight Time
- 1250
I am going to be installing my Parham stab on my RAF this week. I know it needs negative incidence. I am asking those who have first hand knowledge of what would be a good initial starting point for setting this negative angle?
Parallel to the keel which would give it the same degrees of negative incidence as the keel is tilted in flight?
A few degrees nose down with the keel which gives it a few more degrees of negative incidence?
Or a few degrees nose up with respect to the keel which gives is a few less degrees of negative incidence?
I have been studying pictures of RAF's with Parham stabs..and it appears most are parallel to the keel. I have seen a couple that had the stab tilted nosed down with the keel...and one that was tilted up with the keel. My consensus is to go with parallel to the keel..as this definately is negative incidence and should be a good starting point. I am going to be able to adjust it by stacking fender washers on either the leading or trailing edge. Thanks for any responses..Stan
Parallel to the keel which would give it the same degrees of negative incidence as the keel is tilted in flight?
A few degrees nose down with the keel which gives it a few more degrees of negative incidence?
Or a few degrees nose up with respect to the keel which gives is a few less degrees of negative incidence?
I have been studying pictures of RAF's with Parham stabs..and it appears most are parallel to the keel. I have seen a couple that had the stab tilted nosed down with the keel...and one that was tilted up with the keel. My consensus is to go with parallel to the keel..as this definately is negative incidence and should be a good starting point. I am going to be able to adjust it by stacking fender washers on either the leading or trailing edge. Thanks for any responses..Stan