Where does the strobe get mounted?
Most people have mounted the strobe in the middle of the
wing area over the root tube. We normally install the12 volt
single strobe. - back to top
2. Will the HKS carb heat element
work on the 912?
The HKS carb heat element will work on the 912 due to
them both having the same type carb. The other choice is
liquid which I think Leading Edge Air Foils sell from a
supplier in England. Some use carb heat some do not. http://www.ulparts.com/infocarbheat.aspx
back to top
3. Does the 503 engine come with
carb heat? Is it an issue with dual carbs or not really a
The 503 does not come with carb heat. It may be
available through Rotax. Carb icing should not be a problem
unless it is very cold or a high dew point (weather wise).
What we like to do and what my instructors taught me is to
run the engine up and get it warm then shut it down and
cover the engine with a canvas tarp. Do all your other stuff
before you go flying; fill with gas, do walk around, get
your maps, set up your fishing pole etc. This allows the
heat from the engine to get every thing like the carbs, gear
box etc. warm and you have less of a problem with things. - back to top
4. How does the CHT and EGT get
hooked up without lead extensions?
Cut the short extension in half. Go to Radio Shack
and/or a similar store and buy the clear speaker wire. You
can also hook up the EGT, CHT and Tachometer at the panel to
the 12 pair cable by cutting the leads that come out of the
gauges in half. - back to top
5. What route do you typically use
for these cables and what length extensions do you use if
they are needed?
You have to use some sort of extension because the wire
that they supply is only about 48". -back to top
6. How do I run the wires under the
We wait until after the engine is broken in (1 hour
run-up before tying up all the wiring) then we put them in a
1" plastic loom and hide all the wiring on the RH side
of the aircraft. There is nothing worse than having a wire
not hooked up correctly and then having to tear into your
nice wire harness. - back to top
7. Is the solenoid the same
thing as a starter relay?
Yes. - back to top
8. How do you recommend securing
the battery box under the right side of the front seat?
With rivets to the two 3-4 floor cross tubes.- back to top
9. Do I need to flip the intake
No. The carburetors are attached to the intake manifold
and on the new engines this comes out straight. Look on page
6-4 #3 in the Rotax Installation Manual. - back to top
10. What bolt is used to
bleed air and what fitting does it get exchanged with?
The bolt is on the water pump (hose #14 on page 11-4)
and the fitting is on the cylinder head (hose #14 on page
11-3). The fitting goes on the water pump and the bolt goes
on the cylinder head. Refer to pages 11-3 and 11-4 in the
Rotax Installation Manual. - back to top
11. Where does the black hose
from the oil tank attach to the engine?
This hose goes to your oil injection. Look in your Rotax
installation manual on page 12-1 and 12. - back to top
12. How do I replace the 2 existing pieces
of tube that run from the small plastic bottle below the
carb (in the inverted installation) to the engine?
Refer to the installation manual for the rotary valve on
page 13-2 and the instruction sheet included with your kit
for changing over for inverted use. Also, look at page 13-2.
Hose #4 is on the bottom of the engine, which is now the top
for an inverted engine. Turn this fitting sideways to get
the hose on and miss the motor mount. Refer to the attached
pictures to see how to remove the plate to get to the other
fitting for Hose #5. See the attached
pictures. - back to top
is the extra hose coming off the top of my radiator?
That is the #14 hose coming off the top. Refer
to Rotax Installation Manual, page 11-4 - back to top
What can I do when the
prop turns, but doesn’t fire?
Try putting the water temp lead on the IGN terminal.
Otherwise you will not have power to your water temp until
the key is turned to the acc position. However this should
not affect the starting of the engine. back to top
The engine may be flooded. Follow these instructions to
check for engine flooding and for spark. Remove the spark
plugs and see if they are wet or full of gas. If they are,
blow them dry with some compressed air or dry them with a
lighter or propane torch. BE CAREFUL REMEMBER YOU ARE
WORKING AROUND A HIGH GAS FILLED AREA.
Next, ground the spark plugs to the engine case (make sure
they are touching something metal). Have someone turn the
engine over while you look at the spark plugs to see if you
are getting spark. WATCH THE PROP! This will also
clean out all of the gas that may have collected in the
cylinders. If you get no spark, change the toggle position
and try again. This will also tell you what way the toggles
are on. Make sure that you battery is well charged so that
when the plugs are back in the engine is turning over good
to create a good spark.
Try to start the engine with about a quarter throttle to
give it more air. I CANNOT STRESS ENOUGH TO BE CAREFUL AT
THIS POINT BECAUSE IT MAY START AND SURPRISE YOU. You
have been working on this with no results so you may not
expect it to fire up so be ready to shut the engine down and
block the tires so the plane does not go anywhere. -
21. How do I
interpret the diagram for the “combination”
starter/solenoid when I have a separate starter (on the
e-drive) and a solenoid mounted near the battery?
Every electrical system requires a starter and a starter
solenoid. Some systems have the solenoid on the starter,
some have the starter solenoid remote. The starter needs to
know when to start and this is the reason for the starter
solenoid. It is just a switching device to engage the
starter. - back to top
22. What was the schematic I have
(the one that shows one toggle switch, along with the EGT,
CHT and water temp gauge) to be used for?
That schematic provides two examples of the how the
system can be wired. The system can be wired many ways and
with many different components. One uses two toggle switches
and the other uses the mag on/off starter switch
combination. - back to top
23. Do the two unused poles on
each toggle switch just get left open?
In the construction manual there are two wiring
schematics. The first one is with a dual mag ignition switch
with RH and LH mag on the switch. The second one is just a
normal ignition switch, which you have to wire the RH and LH
mags to the two supplied toggle switches and are not wired
to the ignition switch. - back to top
What do I do with the
disc that came in a bag labeled "E Drive parts”?
Mount the prop to the disk on the engine. Do not use the one
that came in the bag as this is for a prop that has a wood
hub. Make sure that you screw in the sheer pins that come
with your prop into the disc before you put the prop on- back to top
Changes needed to be made on 582 for Inverted Installation:
There is a bolt that is on the side of the case, it is used to bleed the air out of the water pump. Exchange this bolt with a fitting that is on the cylinder head.
On the rotary valve oil lines, you have to place a longer hose on the return line to allow the tank to be higher than the crankcase. You may also have to flip the intake manifolds so that the carbs will be straight but look at this before you do to make sure.
The radiator may also be affected as when we order the engine for the Chinook Plus 2 it is always inverted and Rotax supplies us with the correct rad and the side mount exhaust needed for proper installation.
25. Could I drill extra
holes and add more rivets though the elevator horn to secure
it into the elevator?
The fewer holes in the elevator the better. If you feel
that you need to secure the horn better just use one 3/16
rivet. Make sure that the bolt is tight, but do not over
tighten to oblong the tube and make the elevator stiff. - back to top
26. Can I use regular 10mm
nylon locking nuts and washers instead of the “aviation
grade” with the Rotax?
Yes - back to top
How do I work
around the rotary valve oil hose so I can mount the 10-75U
plates to the engine block?
The fitting can either be turned so the hose will run under
the plate or a hole can be drilled through the plate to
route the line. Make sure that the hole is bigger so the
line will not get cut. You can also silicone the hose so
that it will not rub.- back to top
28. Where are the 2
water-tight conductors used for on the HKS?
Refer to your HKS manual, Page 16. It is stated what
these are and what they are used for. You will note some
connectors on your CDI packs and you need to connect these
and these are used for that purpose. -
back to top
Well, we hope that we have clarified a few of your
questions. If you do require additional assistance, we would be very happy to hear from
you with your questions, comments or concerns.
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