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From: "Ed Anderson" <eanderson@carolina.rr.com>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Subject: Fw: Tap 'em  holes  was  [FlyRotary] Throttle Body Nut Ideas
Date: Tue, 21 Aug 2007 21:01:44 -0400
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> Scott,  I think the best answer is to simply tap those bolt holes for the 
> thread size of your bolts.  This does a number of things.
>
> 1.  There is nothing to fall off inside the plenum, no nuts, no bolts or 
> no nut plates
> 2.  Its a few fractions of an ounce lighter
> 3.  You never have to worry about getting onto the back side of the plate 
> (looks like you intend to weld it to the plenum tube.
> 4.  Two of your nuts are pretty close to the wall of your plenum if that 
> bright circle is indeed where it will be placed - can't tell for sure but 
> could be interference with the wall of plenum.
> 5.  You never have to worry about it again.
>
> Ed
>
> Ed Anderson
> Rv-6A N494BW Rotary Powered
> Matthews, NC
> eanderson@carolina.rr.com
> http://members.cox.net/rogersda/rotary/configs.htm#N494BW
> http://www.dmack.net/mazda/index.html
> ----- Original Message ----- 
> From: "Scott" <squiggles@yahoo.com>
> To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
> Sent: Tuesday, August 21, 2007 2:59 PM
> Subject: [FlyRotary] Throttle Body Nut Ideas
>
>
> Hello All...
>
> I was hoping for some ideas on how to mitigate or eliminate the risk of a 
> nut falling off the mount plate of the throttle body.  As you can see in 
> the attached picture #1, two bolts are just inside the intake manifold. 
> Thoughts that have gone through my mind:
>
> 1) Tap the holes, then use a larger bolt with locktite( or similar )
> 2) Use a 1/2" aluminum plate to attach the throttle body to, 
> countersinking the back side deep enough to allow the nuts to sit 
> recessed, then attach that assembly to the plate you see in the picture, 
> however using holes drilled outboard of both the throttle body and plenum
>
> I really don't feel that leaving the nuts inside the plenum is wise, but 
> perhaps I am worrying too much...
>
> What are your thoughts?
>
> Thank You
> -Scott
> http://www.zenithair.com/bldrlist/pm.cgi?login=squiggles&action=display&private=&
>
>
>
>
>
>
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