Kelly:
Yes my goal is to do a gravity fed carburetor low
on the firewall. I know this means a long induction run and all associated
problems to resolve there. I do already have the manifold
made up for a three Mikkuni set up like Tracy's early work and Fin
Lassen's set up but that means fuel pumps. My goal is a purely gravity
fed system and I can do it of my nose tank. In the end it may not work but hey
its called "experimental" for a reason. As for ignition I have a NOS
early (pre 85) points distributor (brand new) as well as a used one of the
same vintage. I also have the crank angle sensor and the taller electronic
distributor. The early point distributor as you may know is much lower than
the electronic one though not as low as the CAS. In building my engine mount I
lowered the thrust line by an inch from design and this is as far as I
dared deviate from plans being a novice at this game. This according to
my figuring should have worked but by the time I was done with it all and the
cowl slope I recently discovered still have to do a bump (even using the right
angle boots one the plug wires of the distributor) in order to have reasonable
clearance. My Falconar is an older rendition than Max Lassacher's and as such
has the rounder firewall style of the older Jodels where Max's is
much boxier. He of course is using Tracy's ECU so clearance is not
an issue. As for alternators I am planning on 2 of the small 20 amp permanent
magnet units of a Kubota tractor. These are tiny units and the Corvair fellows
have had good success with them as well as the john Deere units. They weigh
almost nothing and 2 of them would give me redundancy. In the end this may not
work as the rotary is running much higher RPM than the Corvair fellows and
switching pulley diameters to adjust dynamo speed may be impractical and it
may make more sense to go with one of the smal 40 amp conventional
alternators.
Back to the points distributor bit. Again from
the Corvair crowd this is what they have been running with success. Though
they do not run both points at the same time instead using a coil
switcher to select which output to feed to the single set of
plugs. The principle being that one can tell when the points are
starting to fail giving you good warning to replace them and will run of quite
low voltage should your electrics give up and if you wind up running of the
battery you can run for quite some time this way. Electronics tend to be more
sensitive to critical voltage levels. One of the other concerns is at the
RPM we would, run we could see issues of points bounce and this may
negate their use. The Corvair folks have been recently doing a
combination of one set of points and a electronic Crane pick up unit fitted in
place of the second set of points to get the best of both worlds. This may be
an idea I can use and adapt one of my older style low distributors to
electronic pickups.
In the end it all may not work, and going the
proven way, ie fuel injection and Tracy's ECU as most are doing and have
proven works may be the right thing to do.
Michael
----- Original Message -----
Michael,
You mentioned a distributor.......Are you to
be carburated and use
an early point type or electronic dist. which are very tall
?..........The
waterpump/thermostat housing can be shortened and the alternator
relocated to the side leaving the stock waterpump in
place.........If
you use Tracys EC2 the tall dist. is eliminated and replaced with
the
short 86-91 ignition POS (position
sensor)..........FWIW
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