>      > 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
    >

I have put you on the list, Allen.

I guess I will have to talk to the machinist about flexible tooling, and
fixtures. NC programs will have to be modified too.

Doc Custer
Retired Software Engineer and sometime Audiologist


I am also interested in a slide throttle for a 20b as an IO-540
replacement
Norm Farb
Independence, OR


Add me to the 20B list, too.
And I vote for red anodizing.

Ben Baltrusaitis

[Acroduster Too]


Doc,
I may have missed someone's reply to your question, but NO, the spacing
on the third rotor isn't the same.  I think it is 2", but I'll have to
measure and check.  There's a third main bearing in that side housing.

Thanks,
Mark

Mark my 20B is in the hangar. Can you measure the width of
the housing for me. I think I have it somewhere but a double
check won't hurt.

Paul Lamar ...No rotor no motor.


Paul,
Yes, I'll check it this weekend and let you know.

Mark


Doc,

The dimension on that unique 20B side housing is 3.153".

Thanks,

Mark


Thank you Mark.
-- 

I talked with the machinist this AM. He has the brackets made for the
throttle cable attachment; not anodized.
He said I should get the drawings for the 20B throttle to his ASAP so he
could design a single fixture that would accommodate both the 13B and the
20B parts. So I immediately ran into a question, to wit:

Is 3.153" the distance between the 2nd and 3rd induction hole? or the
dimension of the side housing? I need the distance between the 2nd and 3rd
induction holes.

I promised him I would have the drawings to him by SOB Monday.

Doc Custer
Retired Software Engineer and sometime Audiologist


That is the thickness of the 20B special canter housing. Stock
rotor housings are 3.150".  Stock 2 rotor 13B center housings are
1.975". From this you can draw a 20B engine sandwich
and determine the p-port hole center to center distance.

Paul Lamar ...No rotor no motor.

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