I tend to go blank when I see Euros on a price-list. What is the current
exchange rate?
You also wonder if they bring the engines in complete or as "parts" to save
on customs fees.
These puppies are really turning, so for most applications, including ducted
fans I suspect that some type of reduction is mandatory. this would
mitigate some of the weight issues if you took did a side-by-side. I do
remember that RFB once stacked two of the auto Wankels vertically with a
transmission and single output. There was also an installation with an
engine, fan rotor, engine. I've never seen the details of the clutching.
George W.
About a buck 20 per Euro.
If you are going to use a gear reduction you might as well
use a prop and do away with the drag and weight on the duct.
Paul Lamar ...No rotor no motor.
If you bolted two engines together base-to-base in a horizontally opposed layout, you could use a simple
overrunning clutch on each engine pulley. That way if either
engine fails, the other keeps turning the prop.
Twin-engine redundancy without the the worries of asymetrical thrust, feathering the dead engine's prop, etc.
In fact you could do this with two full-size engines if you used dry-sump oiling. If you use the aluminium
housings, you could have a combined engine weight of probably around 400 pounds wet. This is four rotors
and at least 400 to 500 horsepower!
You could use gears instead of belts and still use the overrunning clutches so you have twin-engine redundancy.
The whole thing would be no bigger than a horizontally opposed aircraft engine.
Regards,
Gordon.
> Somebody that lives in South Florida might drop
> in and take some pictures of this little jewel
> if these people have one in stock.
> Don't say anything about aircraft :)
> Renntech Inc:
> 1369 N. Killian Dr.
> Lake Park, FL 33403
> Phone: 561.845.7888
> Fax: 561.845.6777
> Ken Rudy
> South West Coast Sales
> KenR@RenntechMercedes.com
> Sales and Service Hours: M-F 8-6pm EST
> Driving Directions
Paul Lamar ...No rotor no motor.
About two hours N of Miami. Just above W Palm Beach.
Virg
Talked to the President of the company about 2 P M today.
He gave me two websites to check out.
renntechkarting.com and nova-racing.com
He mentioned Wankelat as being out of business but maybe some life
being around with someone else. Virg
Did he have an engine in stock?
> Paul Lamar
The Nova Racing Wankel kart engine is being distributed by Phantom
Aeronautics in
the US for ultralight use.
http://www.rotary-xr40.com.
I'm hoping to use this
one in a slightly enlarged Ligeti-Stratos redesign.
Glenn Crowder
“8/21/06 It has been a while since the last update. We have been busy modifying
the engine. On the fourth of July the rear crankshaft bearing failed while in flight.
The aircraft was landed safely. The inner retainer ring on the rear bearing failed
and dropped three rollers into the center of the engine. The crankshaft began to
vibrate and the rotor portion of the generator rubbed against the stator portion
of the generator. This caused friction and excess heat. The rotor and stator fused
together and stopped the engine. We are currently modifying the bearing to remedy
this problem and will continue testing. Engines will not be for sale until the new
bearing has been adequately tested.
[Perhaps this was caused by the side load on the bearing due to the belt
PSRU. PL]
“4/13/06 Back from Sun – n – Fun 2006. Engine worked well, plane flew well.
New pictures have been posted.
“3/22/06 Have been running the engine both on the test stand and on the aircraft.
Everything is going well. Drive belt has held up through 100 hours, including a
prop strike. Bearings have not needed re-greasing. Engine has been taken apart
twice for inspection. Everything is working well. Other than an unexpected prop
strike there has been no maintenance required.
“1/22/06 Tore engine down for inspection and to obtain pictures of the internal
workings of the engine. Engine is now fully instrumented to measure EGT, Water Temp,
RPM, Bearing Temp, and Manifold Pressure. Testing is continuing with the goal
of 200 hours by Sun n Fun.
“11/16/05 New video of the rotary in flight has been posted. The engine is putting
out enough power and is working well. We are building hours on the engine to test
reliability. We have measured the fuel burn to be 2.5 gallons per hour at 6800 RPM.
This power setting produces a 60 mph straight and level cruise with a 260 lb pilot.
New Performance Comparison is shown below.
“8/30/05 Engine is due to arrive back from Germany this week. Carb was switched to
a Bing. Intake and exhaust were modified to increase horsepower. Test stand measured
static thrust was increased from 190 lbs to 260 lbs at 7800 RPM With a 2-Blade 65”
prop. Engine will be mounted shortly and testing will continue.
“6/1/05 As with any development modifications need to be made. Prop testing complete.
Most thrust was produced by a 64” 2-Blade IVO Prop. Water pump belts are currently
being redesigned. Water pump belts were found to slip after 10 hours of use. Will
be switching to cog or V-belt setup. Currently trying different carburetors to
improve horsepower and overall thrust. Drive belt system is working very well.
Engine is very smooth and has good acceleration.
“5/16/05 Aircraft has been fixed. Have 5 Hours on Engine. Have flown aircraft with
engine for 0.5 hours. Working on matching the correct prop to this engine to increase
performance.
“4/25/05 Run time has not increased due to a gust of winding flipping the test plane
over. The flip cracked a prop blade. We are waiting for a new prop to arrive before
testing continues. Prop will be in next Tuesday. Look for run time to increase the
first week of May.”
HISTORY
This is a Single Stage (Single Rotary) German built Wankel Rotary Engine. The engine
is used in Kart Racing. The engine has been produced since the early 1990’s. The
manufacturer produces 500 engines a year. This is a proven engine that is being
modified for aircraft use. The Kart racing engine is rated for 52 Hp at 10,000 RPM.
The Phantom XR-40 has been derated to 40 hp at 7,600 RPM for aircraft use to ensure
proper cooling and reliability. The engine is being tested on a Phantom X-1.
Erik Pederson, PhD at Phantom Aeronautics LLC
2010 Hov-Aire Dr. , Three Rivers, MI 49093
; PH: 269-271-4568
; FAX: 269-592-5908
EMAIL:
epederson@phantomaeronautics.com
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