[simpits-tech] to STEVE, re: throttle arm
Marv De Beque
simpits-tech@simpits.org
Wed, 02 Oct 2002 05:52:58 -0400
Chris,
It is an exact physical copy of the real thing. You can mount it one of two
ways. The first is in a real instrument panel, just like the real thing.
The other method uses a large bolt hole on the bottom (1/2-20 pitch).
So, the answer is, it will fit the actual foot print of the original. The
only difference is mine uses 4 force sensors instead of LVDS to sense grip
pressure.
Marv
--
> From: "Chris Crowley" <ccrowley@mccrowley.com>
> Reply-To: simpits-tech@simpits.org
> Date: Wed, 2 Oct 2002 05:37:54 -0400
> To: <simpits-tech@simpits.org>
> Subject: RE: [simpits-tech] to STEVE, re: throttle arm
>
> Marv,
> I was wondering how your stick base will differ from the one offered by
> Aimsworth? Will yours fit the actual footprint of the real one so that I
> don't have to relocate the switches on the forward right side panel? Will
> yours put the stick at the same elevation as well?
>
> v/r
>
> Chris Crowley
>
>
> -----Original Message-----
> From: simpits-tech-admin@simpits.org
> [mailto:simpits-tech-admin@simpits.org]On Behalf Of Marv De Beque
> Sent: Tuesday, October 01, 2002 6:39 PM
> To: simpits-tech@simpits.org
> Subject: Re: [simpits-tech] to STEVE, re: throttle arm
>
>
> I would be curious to see the results. We have the a rapid prototyping
> machine at Honeywell that uses resin.
>
> I made two MFD bezels for myself. They look great at a distance, but close
> up you can easily spot the layering as thin lines. It gives the finish a
> fine line-like patina.
>
> I was originally thinking of using these as masters to make molds, but they
> are not acceptable with that type of finish.
>
> If there is a better process that has a glass smooth finish to it, then it
> would be worth going for it! I am very curious to see what results.
>
> I'll spill the beans here, but I have already been considering a realistic
> throttle arm for the Cougar to go with my force sensor F-16 stick base.
>
> What I leaning toward is making a mold of the arm (and the rest of the
> assembly) and casting replicas using either fiberglass or carbon fiber (I am
> leaning toward carbon fiber).
>
> The reason is for durability. I have the real thing in my cockpit and I can
> see that it is easy to get some serious abuse if you smack it on entry or
> exit of the cockpit.
>
> Basically, that arm is a big lever and any pressure on the throttle grip
> will yield a much larger moment of force at the bottom.
>
> As for making the arm, I would recommend that you make a two-part mold. The
> first part of making a part is applying a layer of gel coat to the molds,
> then a few layers of carbon fiber cloth.
>
> The inner hole can be made with 3/8" to 1/2" copper plumbing. It is easy to
> bend and is malleable. Once the initial layers have cured, you can add the
> copper tube and fill with a mix of chopped carbon fiber and epoxy resin.
>
> The resulting part would be very strong.
>
> You are welcome to try this idea. If you get it working, go for it! I
> would like to focus on the stick base first, but see a market for a good
> F-16 throttle solution, too. Maybe someone out there can do it.
>
> Incidentally, I am hoping to buy a Cougar soon and will offer a Cougar
> conversion kit for the Cougar F-16 Grip to fit my force sensor base first.
> Since the throttle grip comes along for the ride in the purchase, I have
> been considering the throttle arm as a second project, but that is a little
> further down the road and everyone already knows how busy I am. :-/
>
> Marv
> --
>
>
>> From: Steve Wilson <mafsix@attbi.com>
>> Reply-To: simpits-tech@simpits.org
>> Date: Tue, 1 Oct 2002 13:18:22 -0400
>> To: <simpits-tech@simpits.org>
>> Subject: Re: [simpits-tech] to STEVE, re: throttle arm
>>
>> Er, Marv, actually, that mail was directed at Jim K., whom may have some
> sort
>> of "in" with a rapid prototyper. And this whole thing is aimed at
> automated
>> 3D rendering of the knobs. I don't want to hand build 15-20 different
> knobs
>> either. If my drawings (TBD, BTW) could be used for RP generation of knob
>> masters, from there, castings could be made, and ultimately knob sets.
> I'm
>> trying to knock down that $900 to $1200 cost of the knob masters, and if
> Jim
>> has a good resource, let's add that to the pool. If the RP costs too
> much,
>> though, obviously this is for naught. But Jim suggested RP for the arm,
> and
>> while that may or may not fly, RP for the knobs would be super handy.
> That
>> is, unless our pal Jurgen at Aimsworth comes up with a better solution,
> and
>> I'm thinking that may be a very, very good answer to the whole situation.
>> Jurgen is taking a real bent towards authenticity these days, and I'm
> pretty
>> optimistic he will ultimately come through.
>>
>> Steve
>> --
>> Steve Wilson, mafsix@attbi.com on 10/01/2002
>>
>>
>> On Tue, 01 Oct 2002 12:46:55 -0400, Marv De Beque wrote:
>> ::::
>> :::: Thanks for the offer for the knobs, but like I said before,
>> :::: the drawings are
>> :::: of little use to me. No way do I want to make complex molds
>> :::: from scratch
>> :::: for knobs.
>> ::::
>> :::: It is 100 times easier to make a mold from a real knob and it
>> :::: is more
>> :::: accurate, to boot.
>> :::: --
>> ::::
>> ::::
>> :::: > From: Steve Wilson <mafsix@attbi.com>
>> :::: > Reply-To: simpits-tech@simpits.org
>> :::: > Date: Tue, 1 Oct 2002 11:13:07 -0400
>> :::: > To: <simpits-tech@simpits.org>
>> :::: > Subject: Re: [simpits-tech] to STEVE, re: throttle arm
>> :::: >
>> :::: > Hi Jim - I could probably generate a model of the arm in DXF
>> :::: and STL with
>> :::: > little problem. Keep in mind that the arm needs to be as
>> :::: hollow as possible
>> :::: > (thin wall) to get the TQS cablage through it. But......
>> :::: more importantly for
>> :::: > the group, what about knobs!?! I can generate STL's for
>> :::: them too. I don't
>> :::: > have the time resource to get deep in this, not to mention
>> :::: sufficient stress
>> :::: > overhead, but I'm getting into 3D CGI in a big way, and
>> :::: could use the practice
>> :::: > doing the models. It does happen that these can be exported
>> :::: into
>> :::: > stereolithography and AutoCAD files suitable for rapid
>> :::: prototyping. Am I on
>> :::: > the right track??
>> :::: >
>> :::: > Steve
>> :::: > --
>> :::: > Steve Wilson, mafsix@attbi.com on 10/01/2002
>> :::: >
>> :::: >
>> :::: > On Mon, 30 Sep 2002 17:26:18 -0600, Jim K. wrote:
>> :::: > ::::
>> :::: > :::: Steve,
>> :::: > :::: You know an easy way to make a replica of the
>> :::: throttle arm
>> :::: > :::: might be to go
>> :::: > :::: to a rapid prototyper and have them make an arm using
>> :::: one of
>> :::: > :::: their metal
>> :::: > :::: based materials. It actually might be interesting to
>> :::: see what
>> :::: > :::: something
>> :::: > :::: like that would cost. Do you have a drawing for
>> :::: that arm??
>> :::: > :::: I work
>> :::: > :::: closely with a prototyper here and I could get some
>> :::: ideas for
>> :::: > :::: other ways of
>> :::: > :::: making that arm.
>> :::: > :::: Lemme know
>> :::: > :::: Jim
>> :::: > ::::
>> :::: > ::::
>> :::: > :::: _______________________________________________
>> :::: > :::: Simpits-tech mailing list
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>> :::: >
>> :::: >
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