Drag link on servos

[Bob Miller]

I belive most if not all of the metal gear servos use a 2.5 x 8 mm machine
screw.

Bob Miller
----- Original Message ----- 
From: "Dean Pappas" <d.pappas at kodeos.com>
To: <discussion at nsrca.org>
Sent: Monday, February 09, 2004 1:53 PM
Subject: RE: Drag link on servos


> Hello Xavier,
> To begin with, the special JR item that provides the hard-point is not
really heavy. Using an existing hard-point in the airframe, is always going
to be lighter, though.
>
> If the servo uses a machine screw, then the appropriately longer screw can
almost always be found in the RC car section of the hobby shop. The Futaba
servos use a 2-mm screw. I'd be surprised if JR use a different size. If the
output arm is plastic then it probably uses what looks (to me) to be a
blunt-ended sheet-metal screw. You will have to hunt for the right sized
screw ... I have no special source. A coarse-thread machine screw of the
right diameter could work nicely, in the plastic.
>
> The ball and the conical standoff, that help the linkage to clear the
servo wheel, were part of the hardware package that came with the ball-link.
I used a large Rocket City brand ball-link, because the 2-mm screw passes
through the hole in it. If you use another brand, then fabricate a tiny
hollow standoff, or use a stack of tiny washers.
> Let me know if I didn't fully answer your question
> Regards,
> Dean
>
>
> -----Original Message-----
> From: Xavier Mouraux [mailto:xavier.mouraux at sympatico.ca]
> Sent: Saturday, February 07, 2004 8:49 PM
> To: discussion at nsrca.org
> Subject: Drag link on servos
>
>
> Hello all, and Dean Pappas in particular,
>
> In the February issue of Flying Models, you show some drag links on
servos.
> I was planning on installing links like this on my planes latelly and the
> article gave me some new ideas. However I am still stuck with the servo
arm
> screw/ball head problem.
> What could I use to replace the screw on JR servos (digital and not) to
> attach the ball link ? I have seen the special JR set-up before but it
seems
> heavy. Your suggestion looks better for my applications.
>
> Anybody else with ideas for that ?
>
> Thanks
>
> Xavier
>
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