Having repaired my fuselage and fin structures after my overturn a while back, I have started to look carefully at the engine bay and have noted a slight bend in the back plate of my PSRU and a corresponding less than 1 degree bend in the top member of my engine mount. The engine frame has bent on both sides just at the point where the top bar is supported by a triangulation support from the bottom engine mounting point. It is not discernible by eye, but a straight edge on the top of the tube reveals it. The PSRU has bent due to a stress concentration just at the top of the engine block where both the support from the block ceases and, on the front edge of the PSRU back plate, so does the side plate that supports the front plate of the PSRU. (poor design I think, as the bottom pulley also does not have a front bearing so the crank is being subject to a cyclic bending as it rotates ....)
OK ... I'll probably replace or modify the PSRU. I have a Subaru EA 81 motor ... any suggestions as to a PSRU that includes a bottom pulley front bearing and that might suit the Suby motor please ? I currently have a 1.79 reduction (I think) and would like this or even a 2:1. Re engine mount. I need to repair this one and also to modify it to accept a nose wheel, or get a new one. . (I think one of the causes of my accident was the lack of visibility at the three point attitude). The original tubes for the nose wheel have been cut off to make room for the Suby motor I think ..... Funds are limited. If I repair and modify this engine mount, what material should I use and If replacing it, is there a proprietary mount that suits the Suby / KR2 (narrow mounts) combination ..... Cheers and a belated happy new year to everyone ..... Martin Pearce KR2 19 - 7814 rocketdri...@optusnet.com.au
