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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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