Mikuni HRS48 is looking good. I'll mount the carbs close to the engine
for good idle and low profile and use a 25 inch long stack.
Mikuni claims 120 HP per carb which is perfect for our use.
If a Mikuni can live on a hog it can live on a rotary.
If this works it is a major breakthrough for the rotary in general.
I would not be a bit surprised if it finds it way into car racing.
Mikuni is in my neck of the woods so perhaps I will hit
them up for some test 48 mm carb loaners.
Paul Lamar ...No rotor no motor.
Hello Paul,
How are you going. I have been of the list for some time now but dave
has passed on your email. I have mounted two Mikuni on the renises for
my Mustang. I did not need to go to the bigger ones for this. the best
price I found was from
www.easternperformance.com.
all the flow rates are at another site.
What ignition are you going to use? i was looking at using the same
system as the Jabiru uses on this. I have a Harley direct drive
alternator to mount also.
I have been working on the lightning with the 8 5100 Jabiru engine in
of late but will go back to the Mustang again. I am a lot happier now
that I have descended with the high pressure fuel supply.
I have also had this project on hold as the RAA in Australia get its
new regs in place to include the Mustang
Regards Don
--
Best regards,
ddunbar WA
We are doing fine Don. We just got a new Golden puppy.
BTW Robin and I might visit next month. I would like
to explore WA some more.
Yes I know. Here are some old pictures you sent.
Don't expect a lot of power if your using the Mikuni with the
side port RX8 motor. The hot tip is a p-port engine.
I would swap these for the 48's and p-port the engine. It is real easy
now that Mark Steitle has figured out how to tig weld them in.
This is a piece of cake for the highly skilled people you have over there.
You don't have to use the power and fuel burn if you don't need it.
Also the extra power will pay off big time when cruising at
10,000 feet because you are down to about 60% power anyway.
In other words starting with 240 HP at sea level you will
have 144 HP at 10,000 feet where the aerodynamic drag is
much much lower. Mount the 48's close to the block for a
better idle. Don't fool around :) Jump in! The water is fine :)
Ignition:
A multi spark capacitor discharge ignition one per spark plug
has an advantage for a rotary as it will fire through a fouled
spark plug. If you burn any 100LL the plugs foul sooner rather than later.
If you use one per plug the RPM at which they fail to fire
multiple times is doubled as that number (about 4,000 RPM) is given for a four
cylinder engine that fires twice as often as a one rotor engine.
It will also fire a leaner mixture so you can cruise with a lower
fuel burn. MSD Part number 6200. Don't worry about the total
power consumption as each unit is using half the power as a four cylinder
unit single unit would be using.
The easy and simple way to trigger it is use two mag pick ups mounted
180 degrees from each other and make a new steel trigger wheel.
Mount the new trigger on the outside of the RX8 e-shaft pulley
as it is easier to fabricate brackets and clear the belts.
Thanks again to Mark Steitle for this tip.
Fire leading and trailing plugs at the same time around 20 to 30 degrees BTDC.
http://www.msdignition.com/ignition_4_6200.htm
Paul Lamar ...No rotor no motor.
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