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RV-8 N605TT
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Date: 9-7-2009
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Number of Hours: 5.00
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Manual Reference:
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Brief Description: Grove gear install part 2
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gear install cont'd...
the attach brackets for the grove gear are larger than the stock brackets, and this means that the access area must be trimmed to make room. the amount of material required to be removed surprised me, but appears to be the norm after checking with the other RV-8 grove gear installations. the trimming requires the outermost rivet to be removed on the rivet line just outboard of the access plate fastening screws. the rivet hole now becomes the radius of the new access panel boundary. see photos for clarity.
once all of the measurements & alignments were complete per post of 9/6/09, the center 7/16" bolt was tightened per the plans. but here's where i may have a mistake. the plans state to tighten this bolt and then make some alignment marks on the gear and surrounding skins to give a visual check if the gear moves during drilling. i did just that, but i did not torque those bolts to specification. in retrospect, i believe that the torque will affect the position of the gear, so unless i am calibrated like a fine torque wrench, the gear were probably sitting in slightly different locations than what i had measured ( and was quite happy with). the visual marks looked close enough, but that is a crude, inaccurate check anyway. anyway, i tightened the 7/16" bolts and then drilled the inboard and outboard brackets on each gear leg.
after i drilled, i thought about the process i had used, and was too frustrated (too scared?) to measure the alignment. this was one of those times that really test the motivation to finish the project! I did measure the rails for parallel that were clamped to the outer gear faces and they had maintained the parallelism set prior to drilling. i'm just not sure if the equidistant measurement to the centerpoint aft will remain the same. i'll check this at final gear install and go from there.
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