![\"IMGP6649\"](\"https:\/\/rv10.mirimar.org\/wp-content\/uploads\/2016\/06\/IMGP6649.jpg\")
<\/a>Step one is Pro-Seal around the major antenna holes and fasten tightly with clecoes.\u00a0 After drying overnight, the excess sealing material was removed and dimples cleaned out ready for riveting.<\/p>\n<\/p>\n
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<\/p>\n <\/p>\n <\/p>\n <\/p>\n <\/p>\n <\/p>\n <\/p>\n <\/p>\n <\/p>\n <\/p>\n Next up was attaching the two static ports (one left and one right) to the rear tailcone skins.\u00a0 Wooden jigs were made to clamp the ports in\u00a0 position while the Pro-Seal drys.\u00a0 Some folks use rivets and\/or the Pro-Seal, but my experience is the Pro-Seal should be strong enough to hold by itself.<\/p>\n <\/p>\n <\/p>\n <\/p>\n <\/p>\n The baggage door parts were primed and painted in earlier posts.\u00a0 The outer frame and hinges were then riveted together for proper alignment.\u00a0 With the inner and outer panels cloeced into place, the frame now has the appropriate configuration and rigidity to final fit the outer panel to the baggage door opening in the fuselage side skins.\u00a0 A gap of about 1\/8″ all around is desired to allow a tight fit, but enough room to close freely.<\/p>\n <\/p>\n <\/p>\n <\/p>\n <\/p>\n <\/p>\n <\/p>\n Finally, I had purchased a $20 grinder from Craigslist earlier in the year.\u00a0 It ran okay, but heated up quickly when in use.\u00a0 I decided to replace the 6202-2RS bearings with a higher precision ABEC 3+ variety. Why – this is definitely overkill.\u00a0 Well it only cost $10 for two of them, and I was curious whether it would make any difference.\u00a0 In addition, the whole topic of bearing selection was a new and interesting topic for me to research.<\/p>\n <\/p>\n <\/p>\n <\/p>\n <\/p>\n <\/p>\n <\/p>\n <\/p>\n <\/p>\n <\/p>\n <\/p>\n I then used the test indicator on my drill press chuck – almost not detectable, which means the unextended chuck is <0.0005″.\u00a0 Outstanding, but the proper test of drill press runout is fully extend the quill and measure at the end of a 4″ machinist dowel.\u00a0 Since my Delta 17-900 drill press does not have a quill stop, this will be a two-man job to measure at a later date.<\/p>\n <\/p>\n <\/p>\n <\/p>\n <\/p>\n <\/p>\n <\/p>\n","protected":false},"excerpt":{"rendered":" This week saw another set of clean-up activities – things started in the past, but finally with time to address.\u00a0 Primary among these was final attachment of the COM2 antenna plate to the upper tailcone skin. Step one is Pro-Seal around the major antenna holes and fasten tightly with clecoes.\u00a0 After drying overnight, the excess …<\/span> Continue Reading →<\/span><\/a><\/span><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[39,10],"tags":[],"class_list":["post-1686","post","type-post","status-publish","format-standard","hentry","category-custom-elements","category-rv-10-build-project"],"_links":{"self":[{"href":"https:\/\/rv10.mirimar.org\/index.php?rest_route=\/wp\/v2\/posts\/1686","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/rv10.mirimar.org\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/rv10.mirimar.org\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/rv10.mirimar.org\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/rv10.mirimar.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1686"}],"version-history":[{"count":3,"href":"https:\/\/rv10.mirimar.org\/index.php?rest_route=\/wp\/v2\/posts\/1686\/revisions"}],"predecessor-version":[{"id":1695,"href":"https:\/\/rv10.mirimar.org\/index.php?rest_route=\/wp\/v2\/posts\/1686\/revisions\/1695"}],"wp:attachment":[{"href":"https:\/\/rv10.mirimar.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1686"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/rv10.mirimar.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1686"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/rv10.mirimar.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1686"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}<\/a>I decided to back rivet all locations with a 4″x6″ plate obtained from Cleveland Tools for this purpose.\u00a0 To avoid the previously committed sin of slipping off the plate during riveting, this time I line up the plate in a known position by marking the antenna holes with a black Sharpie.\u00a0 By always keeping the holes aligned, I was assured plate would always be under the rivet with plenty of space on either side.<\/p>\n<\/a>The outcome looks good. A bit of Scotchbrite preps the skin to accept priming.<\/p>\n<\/a>The backside of the antenna plate and the newly deburred holes in the baggage bulkhead are primed with SEM self-etching primer to cover any bare spots.<\/p>\n<\/a><\/a>Front and back photos of the static ports while the Pro-Seal drys.<\/p>\n<\/a>Here the outer edge of the bottom and right sides are marked with a Sharpie to final dimensions. The standard hand file and Scotchbrite process was used to complete the shaping.<\/p>\n<\/a>The inside surface of the outer panel is also primed with SEM self-etch. Next up for this piece is final paint with the BAC707 used for the cockpit interior.<\/p>\n<\/a>To replace the bearings, the outer housings are removed with a pulley puller, then the bearings.\u00a0 This leaves the raw shaft and stator with fan attachment.\u00a0 The flaking insulation of the stator was removed, then sprayed with electrical insulation varnish.\u00a0 Here is the cleaned shaft prior to treatment.<\/p>\n<\/a>The shaft was placed on two V-blocks received from Rich at the estate sale.\u00a0 The shaft was rotated slowly during the spray treatment.<\/p>\n<\/a>Time for some more overkill.\u00a0 Since I already had the shaft out, I decided to measure with my new test indicator and stand obtained on eBay for $12.50!\u00a0 Nice price and the setup worked great.<\/p>\n<\/a>The indicator itself is supposed to read 0.0005″ increments.\u00a0 The outer portion of the shafts vary about 0.002-0.003″, not bad, but when multiplied by the diameter of the grinding wheels, the runout is quite visible on the wheel surfaces.\u00a0 The deviation on the shaft between the bearings is about 0.010″.\u00a0 These numbers don’t mean much as no adjustments were made to the shaft bend.\u00a0 However I am trying to use this information to gain some experience on tolerances.\u00a0 The overall outcome is a smoother running and cooler motor.<\/p>\n