you see a bordered thumbnail click on it to expand the pic...
was launched in 2000 and once the general public's excitement abated
a degree or so we found, over a period of the ensuing years, a call
for a larger engine.
all our efforts concentrated on getting the R2800 off the ground
there was little time left for the development of any new engine.
popularity and acceptance of the R2800 grew we started to entertain
the idea of developing a 9 cylinder engine to accommodate a large
group of people who indicated that their need for such an engine
was great. I'm talking of people who commenced building full scale
WW1 craft like the Sopwith, Fokker DR1, Nieuport ...etc ... then
there were the people building the Hatz Classic and the like.
was defined, but as I say in the Round Sounds Newsletter, there
was a reluctance to go down the development path because, quite
frankly, we were tired of being poor though paying Bank interest
on loans which would inevitably be required.
obviously had other ideas as over the 2003 Christmas break, without
telling anyone, he produced the first set of design drawings.
he produced now put us in a bit of a bind - the project was clearly
viable but financing was an issue that needed to be addressed so
it all went to the back burner.
of the existence of the design work done by Paul started too filtered
out. Before long several clients put their hand up in firm commitment
towards purchasing an engine.
though 2 engines relieved some of our reluctance to proceed, it
was not quite sufficient to provide the elbow room we needed. So
it was that we settled on the scheme as outlined in the Newsletter
and waited to see what would follow.
by early January we had 4 commitments. Confident that the 5th order
would fall into place before the conclusion of the limited production
run, Rotec commenced the first parts production on the 18th of January
To date everything is going to schedule.
was on target all the way so far with the first run up on the 4th
of June 2005; here is how it was reported:
9cyl (prototype) ran for the first time today! Its been enjoyable
working on this project and we now have all the parts for 6x R36
engines (inc. 1 spare) but we assembled just one for bench testing,
and it started pretty much first hit, it has duel Hall electronic
ignition. Sounds fantastic and you can just imagine the power potential.
The excitement level is high!
Guess a bit of history has just occurred.
nutshell - In essence the R3600 is a R2800 with 2 additional pots.
= 850mm (33.46") its 40mm larger than the diameter of the
the same as the R2800 = 640mm (25.2")
prop hub to accommodate the additional power and torque.
has been established. Including all bolt on accessories and the
dual exhaust collector ring the weight came in at 123Kg (270.6lbs)
may be 150+HP (yet to be determined)
have a 3:2 PSRU for additional torque (resulting in 150+HP of
usable power when compared to the output of a "Flat"
max prop diameter being used in flight with a R2800 is a 83"diameter
x 43" pitch. This is on Roman Weller's Sprint. The figures
coming back show that the engine is not overloaded and the performance
of the craft is beyond what Roman expected.
Our recommended prop diameter for the R2800 is 76" diam with
a pitch of 55" - tho' looking at Roman's figures we might be
a tad conservative.
Extrapolation would indicate that the R3600 will accommodate prop
sizes up to 90" in diameter.
testing has established the current recommended props are as follows
- these have been tested and proven to be a good all round starting
Blade 84" diameter x 67" pitch
Blade 68" diameter x 82" pitch
comes as Standard with every R3600 Purchased:
x 40mm Bing Carburetor& Rubber Coupling and 2 x Hose Clamps
x Starter Motor & Nyloc M 10 Nuts
x Alternator and Alloy Spacer inc. Bolt, Nyloc nuts and Washers.
x Exhaust Stubs & 14 x Bolts & Washers
x Prop Washer
x Ignition Module & Heat Sink Cream
x 12 Volt Ignition Coil (Auto Style)
x Magneto Trigger (Solid State)
x Rotor Buttons (Ignition)
x Ignition Wiring Harness
x Oil Filter Block & Auto style filter
x Steel Engine Mount Cups (Weldable)
x Sets (8 pcs) Rubber Engine Cushions
x Engine Mount Nyloc M 10 Nuts
x Mount Plain Alloy Washers
x Operations and Service Manual
Direct Tech Support
to be used on a full scale Nieuport 24: 94" diam x 67"
the pics, and please some feed back!
& Business Relations: Rotec