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Old 02-14-2010, 12:16 PM
avee8tor13 avee8tor13 is offline
Join Date: Dec 2008
Location: Northern VA
Posts: 141
Default RV-10 access plate in floor for step

Has anyone cut out an access hole in the floor to the step mounting location? I am going to install bushings in the step to prevent the step from moving back and forth.
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Old 02-14-2010, 01:34 PM
bcondrey bcondrey is offline
Join Date: Jan 2005
Location: Bellevue, NE
Posts: 556

Many of us did, however if you install an insert inside the step tube to keep it from deforming under the bolt/nut pressure and upsize to 1/4" hardware it's highly unlikely you'll never need access. If you stick with the AN3 bolt and no insert then it won't take long to be glad you have the access panel.

Another important safety tip - install the bolt upside down, otherwise you'll never be able to remove it due to the location and relationship to the side panels.

RV-10 N442PM
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Old 02-18-2010, 09:52 AM
johngoodman's Avatar
johngoodman johngoodman is offline
Join Date: Feb 2006
Location: Peachtree City, Georgia
Posts: 440

Or, you could use an AN173 Close Tolerance Bolt - worked for me.
John Goodman - 40572
First flight was 25 June, 2011
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Old 02-18-2010, 10:23 AM
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Phil Phil is offline
Join Date: Nov 2006
Location: Waco, Texas
Posts: 1,658

All of the above for me.

I installed the bushings, added doors, and also created holes in the baggage floors to remove the bolt vertically at a later date. It does require the removal of the side panel to access the extraction hole though.

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Old 02-18-2010, 03:59 PM
Tom Martin Tom Martin is offline
Join Date: Jan 2005
Location: Ontario, Canada
Posts: 1,611

Here is a picture for you. Note that I used two bolts for the installation. A AN4 bolt that replaced the original and an additional AN3 bolt at 90 degrees.
I also riveted a 4.5" by 4.5", .063 stiffener to the inner rib that holds the plastic bushing which secures the inner part of the step. This rib showed signs of flexing when weight was added to the step. The step is a rather large lever when you get a large guy jumping on it and a great deal of that load is transfered to the inner rib.
The additional forward inspection hole provides access to one of the com antennae and wire runs.

Tom Martin RV1 pilot 4.6hours!
CPL & IFR rated
EVO F1 Rocket 1000 hours,
2010 SARL Rocket 100 race, average speed of 238.6 knots/274.6mph
RV4, RV7, RV10, two HRIIs and five F1 Rockets
RV14 Tail dragger

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St.Thomas, Ontario Canada, CYQS
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