My spinner also cracked so I also got a new one and bought the forward bulkhead, both from Univair. The forward bulkhead is a disc that fits inside the spinner forward of the prop. The forward bulkhead has a flange around the outside of it with holes that line up with the holes in the new spinner so it can be fastened. So, you end up with an aft bulkhead (back plate) behind the prop and a forward bulkhead (plate) ahead of the prop. Get the forward bulkhead and install it or I would suspect you will eventually have another cracked spinner.
Bart --- In [email protected], "pilotmac818" <pilotmac...@...> wrote: > > My cracked spinner was attached to the back plate with 8 self tapping screws from the local hardware store. The replacement from Univair came with the proper screws (should I back them with some Tinnerman nuts?) but with 4 extra holes midway down the spinner. Since my old spinner had none such I contacted Univair and they said the 4 holes were to attach to a forward bulkhead which was introduced to stop the frequent spinner cracking. Would someone wise me up on this forward bulkhead especially on how it is attached to the spinner? I understand that its role is to stiffen the spinner. Thank you. > > Mac McMahon > N94184 VKX > pilot...@... >
