Wow, Jim that sounds like a great idea. I spent hours trying to get foam 
plugs to match up with the housing runs down my departed Graphite tailboom. 
If I build another airplane that uses pushrods inside of housings, I'll have 
to try that!

Thanks,
Mark W.

BTW, we flew today in windy Texas. The temps were in the low 60's, but the 
winds were gusting over to 20 MPH at my house. Surprisingly the thermal 
activity was fairly good. Hope you guys had and will have a good holiday 
season.
----- Original Message ----- 
From: "James V. Bacus" <[EMAIL PROTECTED]>
To: <soaring@airage.com>
Sent: Tuesday, December 28, 2004 11:17 AM
Subject: Re: [RCSE] Re: [Allegro-Lite] Re: Bonding Pushrod Housings


>I used a similar method with cotton balls and CA.  Stuff the cotton down 
>the tube to the desired "bulkhead" position and then a few drops of CA 
>soaked into the cotton it will make it like a rock.  I did about a half 
>dozen of these down the tube, very light and very strong.
>
> Jim
>
>
> At 10:41 AM 12/28/2004, [EMAIL PROTECTED] wrote:
>>Jon, I can't deny, as long as the extra weight of more than 3 foam 
>>bulkheads don't create a balance issue, that more bulkheads, 4 or 5, will 
>>no doubt result in better pushrod stiffness.
>>My AVA elevator pushrod exits 2" forward of the elevator horn (on the boom 
>>top surface) and the rear bulkhead is 2" in front of the elevator pushrod 
>>exit point. The front bulkhead is about 1.5" behind the front edge of the 
>>boom proper. That allows a small amount of clearance between the #1 
>>bulkhead and the aft edge of the pod as it fits inside of the boom.
>>The resulting space between bulkheads is about 11". I also install a 1/2" 
>>balsa U shaped bulkhead to carry the aft end of the 20 mm ballast tube and 
>>provide support for the pushrod tubes at 8" forward of the #1 foam 
>>bulkhead.
>>
>>The end result of this installation provides excellent elevator and rudder 
>>response for my 40 oz AVA.
>>
>>If a similar length fuse were to be used on a higher performance sailplane 
>>then more than 3 bulkheads would be required to provide the necessary 
>>control respone, no doubt.
>>
>>I hope this disscussion helps those who have questions about pushrod 
>>support with these extra long fuselages like the AVA and Bubble Dancer.
>>
>>Jon, I hope you are enjoying the Christmas Season.
>>
>>Regards, Dave Corven.
>
> Jim
> Downers Grove, IL
> Member of the Chicago SOAR club,  AMA 592537    LSF 7560 Level IV
> ICQ: 6997780   AIM: InventorJim   R/C Soaring blog at www.jimbacus.net
>
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