cstevec:

I have all but completed my radio and engine (OS-FX-1.60) installation into my RB and it fits without issue. I will be using a Brison 1.60 Pitts style muffler. There is NO cutting of the cowl needed except for the glow plug access and the muffler discharge.

To install this engine, all you need to do is insert 1/4" wood dowels into the EXISITNG motor mounting holes in the assembeled firewall, (3 pc's epoxied together), then drill NEW holes as per the detail below and YOUR DONE.

The engine has sufficent clearances in all directions and actually looks like the airframe was made for it !

A couple of assembly observations:

1. When installing the firewall into the ply side frames, it will go MUCH easier if you insert the firewall into the (shorter) frame FIRST then flex the other frame and walk the firewall into position as the longer frame has much more flex.

2. DO NOT GLUE the rear frame support bulkhead in place until you have installed and located the FRAME assy. into the fuse and thru the firwall. Then position the rear support bulkhead and CA together.

3. This is true for the bulkhead in the rear of the fuse for the tailwheel as well. Fit ALL pc's togther DRY then CA into place.

4. I added 3/8" tri-stock to the side frames on the firewall side of the fuse in front of the F/G.


I was hoping to get it done over the long weekend, however, the Robo-struts won't be here till the end of the week.

I will post some pictures this evening.

BR.