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Showing results for tags 'LOP TSIO 520'.
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Well after much ado and more $ than I want to disclose I was able to fly somewhat LOP reasonably smoothly with highest CHT at below 370 and my TIT at 1600! Had a brutal head wind so I flew really low at 10. Achieved 15.9 GPH @ 36 MP @ 2300, 180 TAS, not quite as smooth as I had hoped but barely acceptable at this point. Goal is 14.7 - 15.5 GPH at relatively same TAS as with ROP, which for my ol bucket of bolts is 200 TAS, @ 12. Spoke to a Rocket owner that Don Maxwell put me on to and this was the general performance he achieved. Both Don(s) told me It took him and Don Maxwell a very long time to dial in on their accomplishment! His performance was 14.7 - 15.5 @ 2400 @ 32 - 33" @ 192 @ 10 Each change that was made we flew and recorded the impact to the best of our ability and here are the results thus far: Temperatures: #1 single biggest impact for #1 CHT, GAMI / Bonanza / Pixie hole whopping 45 deg cooler! #2 slight deflection of a baffle on the right side of cowl, just under 30 deg cooler #3 Slower RPM #3 changed method of ROP to LOP transition (now using relatively swift Big Pull) #4 Removed a partial baffle suggestion that was posted on MS and opened up the clearance between cylinder 6 and the rear metal baffle. Smoothness: #1 GAMI injectors (we are still working on this one, there may be some additional opportunity in this area, now that we have some of these other improvements, hope to know more on this soon. #2 Spark Plug change from Champion Fine wire to Tempest Fine wire (slight lowering of TIT but noticeably smoother at LOP) Things that we did that did not have a significant nor measurable impact on an individual basis were: Turbo Induction system leaks (8 found) New baffle seals all around, sealed every crack and seam with RTV Critical Timing set to as close to factory perfect as we could using digital inclinometer. (we just made some changes to the timing last night and I hope to test fly this today or tomorrow) This is not to say that collectively that some of the above were not a factor just not measurable in our test flights. Onward we go..... Rocket on, Fly safe, Lacee