Works slick. I already found a few improvements I can make.
One, it will have fewer bolt holes and bolts.

The first pic is looking at it from the point of view of the engine.
The second pic shows the side connected to the bends with silicon hose.
Paul Lamar

What's the failure mode for a broken throttle cable linkage?  I assume
it fails-open somehow.

Mark
--
  mark supinski
  marksupinski@fastmail.fm

Stuck at whatever it was set to last. There is a bit of friction in the slide.

Kind of hard to fail a straight, push pull 1/4 inch steel rod that goes straight
through the firewall with a knob or T handle on the end :) The only other
part is a aircraft AN clevis on the other end of the rod where is fastens
to the slide.

Paul Lamar

Mark wrote:

On many (most) aircraft you won't get this straight shot.

Fail wide open is the standard fail safe mode required of certified A/C. It would be foolish to deviate from this practice. Put a spring on it.

In Europe the requirement is in Certification Standards 23.1143 (G)
http://www.easa.eu.int/doc/Agency_Mesures/Certification_Spec/decision_ED_2003_14_RM.pdf

(g) For reciprocating single-engine

aeroplanes, each power or thrust control must be

designed so that if the control separates at the

engine fuel metering device, the aeroplane is

capable of continuing safe flight.

For those on the other side of the pond it is in FAR 23.1143 (G)

http://www.airweb.faa.gov/Regulatory_and_Guidance_Library/rgFAR.nsf/0/4810746BE2224D21852566870070BC62?OpenDocument

Remember, most of the requirements in the certification standards were written in blood!

Mark Wrathall

What do they mean by safe flight? Does the engine run at the same speed? Does it
go to wide open? Suppose the spring fails? Does it go to idle? If so how?

A push pull throttle cable is pretty robust and reliable. Anything can be designed. We could
add a spring. What do you what it to do?

Paul Lamar

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