[NSRCA-discussion] control horns

[Lance Van Nostrand]

Thanks Scott. Very helpful
--Lance

  ----- Original Message ----- 
  From: js.smith at verizon.net 
  To: nsrca-discussion at lists.nsrca.org 
  Sent: Saturday, November 04, 2006 7:51 AM
  Subject: Re: [NSRCA-discussion] control horns


  >> On a foam sheeted wing do you think a balsa block should be buried under the skins for the slot? Yes, and only balsa is needed. No hardwood necessary unlike the bolt or MK method. This will save you a few grams X 4. (On the ARC Brio, I slotted into the existing hard point. So in the picture, the horn is glued to the balsa front cap, some foam, then the hard point. I drilled several small holes in the horn for the epoxy to hold.) >> I'm concerned with wear on a CF/wood sandwich... The ball is securely attached to the horn in the same fashion as it's attached to the servo arm. The aircraft ply will not crush under the minute torque of the 2mm bolt. There is a washer between the ball and horn as shown in the NMP DARE packaging (I found these rod ends just OK and will switch back to the MK for the next project.) As there is no movement between the ball and horn, there is nothing to wear. Some may cringe at the 'side loaded' attachment, but the horn is very stiff and will not twist. Servo arm is the weak link in this install. -----Original Message----- From: nsrca-discussion-bounces at lists.nsrca.org [mailto:nsrca-discussion-bounces at lists.nsrca.org]On Behalf Of Lance Van Nostrand Sent: Friday, November 03, 2006 8:09 PM To: NSRCA Mailing List Subject: Re: [NSRCA-discussion] control horns Scott, On a foam sheeted wing do you think a balsa block should be buried under the skins for the slot? Your ball link connection doesn't look like it uses the conical standoff. Do you have a detail shot of this? I'm concerned with wear on a CF/wood sandwich and am curious how you solved this. Thanks, --Lance 


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