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Aileron balance weight bolts

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slook(at)mchsi.com
Guest

Posted: Sat May 08, 2010 3:29 pm Post subject: Aileron balance weight bolts

I just completed the first of my aileron updates and in the course of 

playing with the balance weights couldn't find four bolts that would 

fit the job.

I'm surprised there are not four of a kind AN3 bolts to use.

What has been the required bolt to hold weights and was it in the upgrade kit?

I've considered the possibility that the two AN3-37 are for the 

"light" aileron and the two AN3-30s are for the aileron with trim 

{which I didn't install}.

If this is discussed in the notes or drawings, I missed it...



Thanks,

Steve



Steve Look

Monticello, IL

601XL

"Dogs have owners, Cats have staff"

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DaveG601XL

Joined: 27 Oct 2006
Posts: 351
Location: Cincinnati, Oh

Posted: Sat May 08, 2010 5:59 pm Post subject: Re: Aileron balance weight bolts

Steve,



The bolts I got in the upgrade kit did not work for me either.  I had to buy bolts about 1/4 to 1/2" shorter.  I guess Zenith packed in the bolt sizes that worked for them.  My ailerons are polished and not painted so they must have weighed less.  As long a they balance out, use whatever works.



Good luck,

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David Gallagher
Cincinnati, OH area

smgores

Joined: 11 Jan 2006
Posts: 7

Posted: Sun May 09, 2010 6:34 am Post subject: Re: Aileron balance weight bolts

Steve,



I asked Roger at Zenith the same question.He said the left aileron with the trim tab is heavier and will require more weights so they included 2 longer bolts(An3-37A).The right side (lighter) requires the 2 shorter, AN3-30A bolts.

If you don't have the trim tab,you will have to improvise,either get 2 shorter bolts or use some type of spacers.

Mike

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floyd wilkes

Joined: 11 Jun 2007
Posts: 39
Location: spring branch, tx

Posted: Sun May 09, 2010 7:35 am Post subject: Aileron balance weight bolts

Steve,



I have done two mods now.

On the first one, I bought shorter bolts.

On the second, I used a 10-32 die and cut the threads so the longer bolts

would work.

I guess from Zenith's view, they do not know what your ailerons weigh so

they gave bolts the would work with enough spacers attached.



Floyd Wilkes

601XL flying again.



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Floyd Wilkes

mhubel

Joined: 05 Sep 2009
Posts: 141

Posted: Fri May 14, 2010 5:01 am Post subject: Aileron balance weight bolts

Steve,

     I filled the tubes with lead. The right side to a depth of 6 inches 

and the left side (with the trim system) to 7 inches. Then I only needed 

2 plates on the right side and 4 on the left side to balance. This was 

then small enough to fit through the holes as specified in the drawings. 

Of course much smaller bolts were used, AN3-15 and 16 sizes.

     I didn't like the idea that it would be difficult or almost 

impossible to adjust the balance or for that matter even remove the 

ailerons.

     If I had to do it all over, I would use a 1 inch or 1 x 3/4 tube 

and use all lead weight, no side weights.



On 5/8/2010 7:28 PM, Stephen R. Look wrote:

 	  Quote: 	
		   



 I just completed the first of my aileron updates and in the course of 

 playing with the balance weights couldn't find four bolts that would 

 fit the job.

 I'm surprised there are not four of a kind AN3 bolts to use.

 What has been the required bolt to hold weights and was it in the 

 upgrade kit?

 I've considered the possibility that the two AN3-37 are for the 

 "light" aileron and the two AN3-30s are for the aileron with trim 

 {which I didn't install}.

 If this is discussed in the notes or drawings, I missed it...



 Thanks,

 Steve



 Steve Look

 Monticello, IL

 601XL

 "Dogs have owners, Cats have staff"




	


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Mark Hubelbank

NorthEast Monitoring

2 Clock Tower Place

Suite 555

Maynard, MA, 01754 - USA

mhubel(at)nemon.com

978-443-3955

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