why would he set up a gas hydro with a 1/8th inch shaft ? there is no advantage of doing this even if its set up for saw, a well set up rigger requires a very minimul bend in the stuffing tube / shaft to reduce any drag in the line. also swinging a high pitched 70 odd mm prop would put an awesom amount of strain on a tiny 1/8th rod. i run riggers with the normal 1/4 in flex type shafts with powerplants producing up to 8 h.p. at 22,000 rpms , these are the new cc racing 29.5 zenoahs plus i wouldn,t like to lose a prop at the price there worth [ cocr props ] just because i was silly enough to fit a shaft more suited for a .10 cc glow engine. i am sure guys like andy brown and john finch would think the same. just my thoughts.