This is a 2" by 6" aluminium extrusion about 4 inches long.
This is very similar to what I am doing with the ignition stuff
so I am all set up to machine the covers.
There is an aux board the same size as the MM board mounted below the MM.
So far there are two VR sensor circuits and eight high current drivers for
four coils and four injectors on the aux board. The next thing on the
aux board will be two
manifold pressure sensors. One for the front rotor and one for the
rear.
The back panel has the connectors for the VGA, the PC keyboard, the USB
connector and the 12 VOLT power connector.
The front panel will have two DB15's one for output and one for input.
Also a slot for the 65 gig SD card.
So far all through hole.
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Here is my latest iteration of the PC board. I added an RS232 9 pin
D-sub-min.
Matt Boiteau is using that.
The surface mount manifold pressure sensors are on the right,
29 psi so this board will work with turbo's.
I am thinking of adding EGT sensor circuits.
EGT sensors respond slowly so It mind be possible adjust
the mixture in cruise.
Of course they could be displayed on the EFIS part.
Anybody have any other things they would like added?
I should have this running on the RV4 in a few weeks.
Paul Lamar
I would want egt circuits.
I have a friend with an RV7 that is slightly tail heavy. I machined a
prop plate for him, 3/4 inch thick and weighs just under 14 lbs. There
is a bit more vibration with this plate so it needs to be balanced.
Anybody have any advice on balancing such a thing?
Also if anybody wants to see my machinery/capabilities please visit my
website:
www.cimmfg.us
Randy
113A Mill St. Silver Cliff CO 81252
Cimarron Mfg.
<http://cimmfg.us/>
Mount it on a shaft and roll it on parallel bars.Unfortunately if it is
not symmetrical
around a centre plane it may be out of dynamic balance. In that case you
need a dynamic
balancer.
BTW Randy my NC covers are on hold until I get a bit more money.
I am making a few on my cheap Chinese mill by hand with my poor man's
DRO :)
Paul Lamar
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