Subject: Slide throttle
From: Rotary Engine
Date: 1/10/2007, 9:17 AM
To: AARotary Engine



    >>> How is the slide throttle project doing? Did Doc find a machine
   shop
    >>> to take it on? Jerry
    >>
    >> Tooling and fixtures are being made as I write this. I have ordered
   two
    >> prototypes. The machinist says he expects the finish to be 12
   microinches
    >> or
    >> less. I am planning on having them hard anodized as the estimated
   cost is
    >> minimal and the corrosion resistance of value, especially if mogas
   users
    >> get
    >> a batch with alcohol in it. If someone wants bare aluminum that can
   be an
    >> option.
    >>
    >> There will be two models, one short and one long. The throttle
    >> characteristics are identical, the only difference is the throttle
   cable
    >> mechanical attachments. The short version is for the A-750
   cable, the

    >> long
    >> for the A-1760 as listed in the Aircraft Spruce catalog. I will
   discuss
    >> the
    >> attachment details and relative merits a at a later time.
    >>
    >> My recovery from hip replacement surgery is going much better than I
    >> expected, less than 3 weeks post-op. I plan to visit the machine
   shop

    >> later
    >> this week for an update. I will update the newsletter after that
   visit. I
    >> also plan on setting up a web site.
    >>
    >> I hope to return to work on the RV9-A in a few weeks.
    >>
    >> Doc Custer
    >> Retired Software Engineer and sometime Audiologist
    >
    > Are there any plans for making a model to fit the 20B?
    >
    > Robin
    >

   No current plans, but I would be willing to do it given enough interest.
   Anybody besides Robin interested? Is the port spacing for the third
   rotor the same as for a two rotor?

   UPDATE: I visited the machinist this noon. He is half done doing the NC
   programs. I forgot to ask about the tooling/fixtures. He said he expects
   **some** of the parts to be machined by Monday. He found a shop to do
   the
   PFTE (Teflon is a trade name) as they have the experience and would
   probably
   be cheaper. Also waiting on materials.

   Doc Custer
   Retired Software Engineer and sometime Audiologist

   Doc,
   Yes, I would definitely be interested in a 20B slide throttle. I know
   of one other person that has expressed an interest.

   Mark Steitle
   Lancair ES/20B



I'd be interested in the slide throttle for the 20B.  My plan is to use
a 20B for a BD-4C.  Finding the engine might take some time though as I
have not started the project yet.

Allen Slominski
Houston, TX



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