[NSRCA-discussion] OS140RX needle valve extension

[Scott Smith]

Thanks to all who replied.  I've done the socket head screw before
(Central's servo mounting screws work real well) but locating it with the
engine running was always difficult.  Fuel tubing sounds like the perfect
solution.

Thanks again,

Scott

-----Original Message-----
From: nsrca-discussion-bounces at lists.nsrca.org
[mailto:nsrca-discussion-bounces at lists.nsrca.org]On Behalf Of Verne
Koester
Sent: Sunday, May 14, 2006 11:00 AM
To: NSRCA Mailing List
Subject: Re: [NSRCA-discussion] OS140RX needle valve extension


Scott,
I faced the same dilemma on my Smaragd. I drilled the end of the needle so
it would accept a 4-40 socket head bolt and then cut off the 4-40 so it only
had about an 1/8 inch of threads. Then I used the setscrew near the end of
the needle to hold the 4-40. Next step is to drill a hole in the side of the
fuse so you can insert the ball-driver you'll use to adjust the needle. The
hot tip there is to make the hole large enough to accept a rubber grommet so
you don't chip the paint with the ball driver. I found it difficult at times
to locate the needle with the ball driver, particularly with the engine
running. The cure for that was to put a small piece of fuel tubing over the
end of the needle and 4-40 socket. It acts as a guide for the ball-driver
and helps hold it in place with the engine running. It goes without saying
that the hole in the side of the cowl needs to be aligned pretty close with
the needle. This setup has worked really well for me over the last three
years on two Smaragds.

Verne


----- Original Message -----
From: "Scott Smith" <js.smith at verizon.net>
To: "NSRCA Mailing List" <nsrca-discussion at lists.nsrca.org>
Sent: Sunday, May 14, 2006 8:15 AM
Subject: [NSRCA-discussion] OS140RX needle valve extension


>
> I'm installing this engine in a Brio where a 2.5" needle valve extension
> (plus the required opening) is something I'd rather avoid.  Anybody have
> experience with cutting the needle valve body off the back plate and
> installing it to the airframe?  (engine is out of warranty)
>
> Any other ideas?
>
> Thanks,
>
> Scott
>
> _______________________________________________
> NSRCA-discussion mailing list
> NSRCA-discussion at lists.nsrca.org
> http://lists.nsrca.org/mailman/listinfo/nsrca-discussion
>

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