RE: Hangar 9 Cub with Saito 60 twin issues
Mdish - That was some time ago. I have brought up some of the original build pictures here. Also, some finished. The cowl halves are siamesed. After making a pattern for the engine halves, etc., then cutting the cowl, I am not sure if I used another cowl from the same mfg for this, or if I bought Sig cowls from their 1/5th scale J-3.
You can see the pictures, cowl cut in half, horizontal, then I used 4:40 type (not nuts, and not blind nuts), It is like a flat bowed piece that can be epoxied behind the cowl, on a tab, sticking up. The tabs are either on the bottom half, or the top half, then these pieces are epoxied on the drill hole points. You can then bring the top of the cowl down, and the lip of it will fit over these areas, holes match up, then you can use hex head 4:40 1/4" screws to hold it on. At the rear of the cowl, it is held on with the same 4:40's, and I used the 4:40 female inserts that just screwed into the fuselage at the firewall. Drill, screw in, the inside of it is threaded. I am going to look for some pictures of that set up. I use that everywhere I have a cowl. Please ask if any questions, and I can try to dig up more photos and send. I found the screw inserts and 4:40 cap screws. I also use nylon washers at the screw head. You can get these at Ace Hardware, or any hardware that has the screw and nuts sections.
Vince