The Murphy Builders Site

Hi all,

I am putting the aileron hinges on my Rebel (#300) and per the manual I
am inserting 1/16" washers to get the aileron to clear the top skin.
Has anyone had trouble or heard of trouble with this method? This
reduces the mating surface to the size of a washer (reducing the
bracket's ability to handle side loads and vertical loads). I have
thought of making a wider and taller spacer (I will do so if folks have
had any problems).

BTW, building in Vancouver, WA. (Near Portland, OR). Any Rebel builders
near by?

--
Best Regards,

Scott Hibbs
hibbs@pacifier.com
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Hi Scott,
I haven't heard of any problems using washers in that area, but I made rectangular spacers. I just like the looks better and seemed easier to corrosion proof. I believe the Elite kit uses rectangular spacers now as well. Here's my seat of the pants analysis (which may not be right!!) For any shear loads, horizontally or vertically, the washers are just going along for the ride and should not see any load. For side loads that introduce a moment and want to pry the bracket off, I don't think a base wider than the bracket would help much. However, there shouldn't be any significant loads in that direction that I can envision during a non-accident or hanger rash scenario if all of your surfaces and control rods, etc are aligned properly. Any moments from vertical or other eccentric loading would tend to push the washers in to the rear spar, while pulling the opposite attachment out of the spar. A larger footprint might help to distribute the loads here, but I don't think there has been any indication of local wear under the washers by flying Rebels that would indicate a problem. Wayne could probably shed the most light on this and seems to have pretty good savy on both analytical and practical considerations.

I think Sam and Sandy Archer are near you in Kelso, WA. They are very nice folks and I am sure would be glad to talk to you and arrange for you to see their project which is nearing completion. I don't have their email address handy, but I think you can get it from Murphy's page. That page would also be a good source to find other builders near you. Finally, you might want to check out http://communities.msn.com/NWRebelExper ... t/home.htm This is a site that shares info about Rebels and builders with an emphasis on those in the NW US and BC area, which includes you. It is very graphics oriented. Of course, anyone is welcome to visit or join, especially if you would like to add some photos and how-to dialog of your project or slick trick! Since we are close to the factory, I try to post anything I glean from local visits. For example, currently there are a few photos of the amphibious float installation on the Elite that some may find informative.

Hope this helps.

- Chuck Skorupa -
Elite #500

----- Original Message -----
From: hibbs
Sent: Sunday, October 29, 2000 7:59 AM
To: Murphy Rebel Builders List
Subject: Aileron hinge and washers


Hi all,

I am putting the aileron hinges on my Rebel (#300) and per the manual I
am inserting 1/16" washers to get the aileron to clear the top skin.
Has anyone had trouble or heard of trouble with this method? This
reduces the mating surface to the size of a washer (reducing the
bracket's ability to handle side loads and vertical loads). I have
thought of making a wider and taller spacer (I will do so if folks have
had any problems).

BTW, building in Vancouver, WA. (Near Portland, OR). Any Rebel builders
near by?

--
Best Regards,

Scott Hibbs
hibbs@pacifier.com
*-----------------------------------------------------------------------------------*
The Murphy Rebel Builders List is for the discussion
between builders and owners of Murphy Rebel aircraft.
Archives located at:
http://www.dcsol.com/murphy-rebel/lists/default.htm
*-----------------------------------------------------------------------------------*

Scott,
You can also trim the top skin back so that there is no interference. This was the
advice given to me by the factory a few years ago and it worked well for me.

Good luck,
Rick D.
Rebel S/N 404R

hibbs wrote:

Hi all,

I am putting the aileron hinges on my Rebel (#300) and per the manual I
am inserting 1/16" washers to get the aileron to clear the top skin.
Has anyone had trouble or heard of trouble with this method? This
reduces the mating surface to the size of a washer (reducing the
bracket's ability to handle side loads and vertical loads). I have
thought of making a wider and taller spacer (I will do so if folks have
had any problems).

BTW, building in Vancouver, WA. (Near Portland, OR). Any Rebel builders
near by?

--
Best Regards,

Scott Hibbs
hibbs@pacifier.com
*-----------------------------------------------------------------------------------*
The Murphy Rebel Builders List is for the discussion
between builders and owners of Murphy Rebel aircraft.
Archives located at:
http://www.dcsol.com/murphy-rebel/lists/default.htm
*-----------------------------------------------------------------------------------*

*-----------------------------------------------------------------------------------*
The Murphy Rebel Builders List is for the discussion
between builders and owners of Murphy Rebel aircraft.
Archives located at:
http://www.dcsol.com/murphy-rebel/lists/default.htm
*-----------------------------------------------------------------------------------*




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