BTW guys I suggest everybody get a copy of free Q-Cad as it works on both
 Windows and Linux. That way I can send you 3 view 2D dxf dwgs and you can
 dimension them yourselves if you are interested or need to make the part
 by
 hand.


 Paul Lamar


 Other wise I need to do a lot of extra work as modern 3D cad dwgs don't
 normally have dimensions on them. They are drawn to exact scale and they
 can
 be loaded into a NC Mill without anybody reading the dimensions.

 Paul Lamar


 Q-cad installed and running, but it's not really free. It terminates at 10
 minute intervals, then after 100 hrs total for good. However $35 isn't bad
 for the ability to get some stuff done and not have to take up time that
 could be better spent upgrading Kasauga mills, or designing new stuff for
 rotary aviation.
 C. Smith


 Thanks Craig. I think it is well worth the $35 for a 2D cad program.
 Seems rock solid. I'll send some dxf's for it shortly.
 In fact try this one and see if you can dimension it.

 Paul Lamar

 Paul, I bought a cad program on e-bay for $24 called  DesignCAD  3Dmax v18
 just to try out the rendering part. It does 2D drafting and 3D solid
 modeling, 3D rendering and animation and has a huge symbol library. I
 seems
 easy to use with all the normal drawing commands etc.  They had about
 fifty
 listings on this program recently.It has multiple import/export formats
 including dwg and dfx as well as a lot of newer ones.You own it outright,
 no
 time or save etc limitations.

 george grimes

 Does it work on that 2D dxf I just sent.

 Paul Lamar


 Paul, The listed import file extensions are   DWG,DXF,IGES,WMF,HPGL,and
 XYZ  . There is a setting for 2D/3D operation. I downloaded the rear
 housing
 dxf file and lost it  on the hardrive. I saved t twice because it showed
 174
 KB and saved as 22.4 KB    I will eventually capture a dxf file  on the CD
 drive where I can find it and try it out

 george grimes

 Well Design Cad does not work on Linux so I can not try different files
 in case someone has problems. Q Cad works on both. Like Office,
 Thunderbird
 or Firefox it is a cross  platform application with complete file
 compatibility.


 Paul Lamar



 Paul, does your Rhino run on linux. I am using XP because the programs I
 find run only on windows. I got the dxf files off the last post and will
 have to find something to unzip with. I bought win-zip and it is on here
 somewhere. I wasn't suggesting we need a dynafocal mount, it just seems to
 be less material lengths on the motor mount tubin and less engine in the
 way
 of triangulation of the structure and might be stronger and lighter.The
 radiators might be mounted to the ductwork  of the lower cowl or under the
 motor mount. For side mount radiators like the zenith 801 the extra weight
 of a separate frame for the radiators might end up heavier.

 george grimes

 No Rhino does not work on Linux. It is the only reason I still have a
 Windows computer. XP HAS unzip AKA Compress. What version of XP do you
 have?
 Zip or Compress is built into Windows Explorer that comes with XP. You do
 use Windows Explorer do you not? A lot of people don't even know about
 Windows Explorer let alone use it. Windows Explorer was a bad rip off of
 Xtree Gold for DOS.

 What you do is "send" a file to a compressed folder. That makes
 a smaller file in the same folder you invoked it from. The new file than
 has
 a .zip extension. To un zip it you choose the file and then choose
 "extract all". That unzips it and expands it of course.

 The reason it is a good idea to compress raw dxf files is they tend to be
 large
 and they are merely a large collection of ASCII words readable by any text
 editor.
 If you attach a raw dxf file to an email message they automatically appear
 at the end of
 the  received message as a huge text file making the message pages and
 pages long.
 It then becomes very difficult to extract the DXF part from the rest of
 the email. When it is zipped and attached it always appears as a separate
 entity.

 The other problem with a Lycoming dynafocal mount is the 570 pounds of
prop
 torque is transmitted back through the engine to the rubber motor mounts.
 Mazda never envisioned this to happen to one of their engines. I know
 Mistral
 uses it but they have the opportunity to redesign the rotor and end
 housings
 to accept this level of torque. Mazda had enough trouble with the third
 gen turbo engine cracking the end housings around the dowel pins designed
 to transfer the front rotor torque to the rear end housing of the engine.
 The Le Mans engine was beefed up to act as the last half of the race car
 chassis.

 0.049 thick 4130 tubing 3/4 of an inch in diameter is .0344 pounds per
 inch.
 A 30 inch long piece therefor weighs only about 1 pound. The tubing
portion
 is the lightest part of the motor mount. The schertz beams probably
 weighs more than all the tubing combined in most designs.

 The ideal design is the Questair Venture and Beechcraft Bonanza where the
 bottom
 of the cowl does double duty as the motor mount.

 Paul Lamar

Paul,I will have to get my wife to show me about the windows explorer
features. I use it as a filing cabinet to shift files around and export
drawngs to a CD. I was unaware of it's other  uses. I have XP home on one
computer ans XP professional with the nemesis titan overwrite on the cad
computer. This internet computer is Vista and works well unlike the first
Vista which was awful. It is constantly getting  updates over the internet.

I am reading the manual in Catia currently and find the drawing style
similar to solidworks without all the extra files for everything. It is
similar to autocad 2010 in that the parametric relations and constraints
are
mostly created in the background as you dray whereas solidworks requires
you
to do that also. Both catia and solidworks use multiple line colors on the
screen to show what level of constraint each line has. Autocad does all the
parametric constraints without operator input and will run with everyhing
on
a layer the same color.Catia also requires constructing drawing planes to
construct lines on where that is optional on autocad. I downloaded what I
hope is the manual for Rhino V4 but can't open the rar file extension which
is an alternative compressed file.I have bought a lot of software to open
files and refuse to buy anothe. If people can't use  one of the hundreds of
current formats I am just not interested in their products. I may buy a
Rhino book on Ebay to evaluate their system as I did with solidworks, catia
and autocad. As it stands autocad is lightyears ahead of the other
contenders. Instead of twenty pages of sketch commands it has 800 pages of
drawing commands only 50 of which I actually use.All the systems require an
add on to get usable finite element analysis or fluid dynamics.

george grimes

I want to see some ACAD renderings.

Paul Lamar

Paul, the side housings, center housings and wear plates are drawn up as
well as the integral bellhousings to stack up RX8 engines into 4 rotor and
six rotor. There are also housings with motor mounts for P- port and side
port configurations and an accessory end with integral water pump. All parts
have the casting pattern as well as a finish machined version, I need to add
the side intake ports(4 per rotor) option and have JL run the water cooling
flow in  fluent to  check flow distribution. I also want to ad back up water
seal "O" rings on the inner diameter between the oil and water separation,
and there might be someplace to carve out some additional weight from rhe
castings.I had a removable hot swapable hard drive which somebody carried
off so I am on hold figuring out what student version  of software to get.


The drawings are well backed up, and ready to separate into the indiviual
parts out  of the 358MB of drawing. I will do 3ds exports which I can render
in the Rhino 1 and save as Jpeg or bitmap to send you just as soon as I am
up and running again.I still plan to give away the drawing and G-code to
anyone who wants to make parts which I hope you might help me with. This
week I am trying to move my lathe to the shop from 6 miles down the road but
at 6 tons it is difficult to hire anyone.

george grimes