In 1972, the "Scorpion II" was introduced with an OMC 125 horsepower, 2 cycle engine which provided the added power to fly two lightweight people in cool, low density altitude environments. But despite all the improvements, overhaul times on the major components were still not up to the desired levels.
In 1974, the company embarked on a major redesign of the helicopter once more with the end goal of reducing the amount of maintenance time required per every hour of flight. The first, and most important, item to be addressed was the elimination of the inefficient 2 cycle engine. The company realized that there would never be a way to sufficiently dampen the excessive vibration and low torque associated with this type of engine. The vibration was found to cause rapid wear in various parts and had a tendency to cause cracks in airframe and drive systems.
Unable to find an engine manufacturer to make their 4-cycle engine suitable for the helicopter, RotorWay set forth on an aspect of the company that is unique to this day - producing their own engine. Called the RotorWay RW 133, this 4-cycle, 4-stroke engine now had the added power and torque the company was looking for. The RW 133 had a cruise speed of 128km/h with a range of 190km and a useful load of 190kg.
Later versions of the company's engines, the RW 145 and RW 152, represented continuous improvements made by RotorWay. These predecessors of the RI 162F engine helped make today's product possible. Nearly everything on the engine (and most of the kit) was produced in-house. From the cast rockers to the crankshaft and rod forgings, the RotorWay brand stood for excellence.
With a two-place helicopter available, RotorWay was able to begin instructing customers on how to fly their aircraft. Done at Scorpion Sky Center in Tempe, Arizona, this new program would remain an invaluable customer service tool from that point on.
In 1958, B.J.Schramm set up a company to market a single-seat amateur-built helicopter known as the Schramm "Javelin". This machine had a tubular steel structure with a formed aluminium body shell and was powered by a 75kW Mercury powerboat engine. It first flew in August 1965. Schramm subsequently redesigned the "Javelin" as the "Scorpion", and he formed Rotorway Aircraft Inc. to market kits for this revised version, and claimed that 250 were flying by 1970. The "Scorpion Too" followed, and this had an expanded fuselage structure with a two-seat fibreglass cabin enclosure and a 105kW Evinrude marine engine.
R.Simpson "Airlife's Helicopter and Rotorcraft", 1998
|David Beadle, e-mail, 02.05.2021||reply|
Hi, does anyone have or know of a Scorpion 2 for sale, project, basket case. I'm in UK so will have to do a complete strip and rebuild to stand any chance of flight !!. Please no starship prices, if you can't do it yourself be realistic. Cheers
|Gordon, e-mail, 29.11.2020||reply|
I have a 35mm(?) film of this helicopter. I only unspooled it far enough to get the name in the title. It looks like it's professionally made from the company and could maybe be an instructional or sales video. I can investigate further if there's some interest in the film.
|Tom Sarlija, e-mail, 17.11.2020||reply|
Looking for scorpion ll frame build plans or blueprints to build this helicopter from scratch.
|Terry L Hardesty, e-mail, 21.09.2020||reply|
Looking to buy a Scorpion II
|Devin Wyatt, e-mail, 11.09.2020||reply|
I am really interested in getting my hands on a scorpion 2 / 133 body. If anyone knows where I can get one let me know. Much appreciated.
|Luiz Henrique Bertolotto, e-mail, 11.12.2016||reply|
Anybody saw Scorpion for sale. Just advertise about money.
|Charles Smith, e-mail, 18.03.2015||reply|
Is it for sale and how much?
|Tyler, e-mail, 24.07.2010||reply|
Im selling a scorpion 2 for 8,000 or best offer
|Stephanie, e-mail, 13.09.2010||reply|
Hello. I have the frame for a Scorpion Too, blueprints and other equipment that I must move. This equipment is from an Aerospace company, licensed contractor with the government. Has been left in storage, and we must now vacate the unit. We are asking $10,000 OBO for the frame and blueprints. If interested, please respond to firstname.lastname@example.org, and I will be happy to forward pictures of what we have and details concerning the motor, etc. Thank you.
|Forrest, e-mail, 21.06.2010||reply|
I have a 1975 scorpion II, looking for a starter and flywheel. Would possibly sell as well. If interested let me know here please or email me, thanks
|Michael, e-mail, 17.01.2011||reply|
I have a Scorpion 133 in just about perfect condition for sale. All the sub-groups have been finished and the final assembly & testing is all that is needed. ALL PARTS AND PIECES are included. On top of this, the helo comes with the top RW152 motor (150hp). This is an estate item I am selling. All the work was done by a seasoned builder - DONE RIGHT !! Again, this helo package is complete and looks in almost new condition. Has EVERY building manual and schematics included. You won't need a thing. Taking interested offers now. Have plenty of pictures for serious interested individuals. Looking to move fast. PLEASE - NO SCAMMERS. I am a pro at sniffing out scams from overseas and domestic. Don't attempt it. This is a serious deal here.
|ole norge, e-mail, 08.02.2011||reply|
hello. i have a scorpion II with omc engine .i need one of the bolts where fastening the lower engine mount on the engine block it is 6 pc. total with loch wire between.i think it is 5 /16 unc treads. i am living near oslo in norway,
|Robert, e-mail, 14.02.2011||reply|
Hey Michael, I'm interested in the scorpion you have for sale. Call me on cell phone 225-413-7015
|Robert, e-mail, 19.02.2011||reply|
I have a Rotorway Scorpion that has been rolled over but most of the parts are still good. 152 engine with single delorto carb, elastomeric rotor system, Stainless steel exhaust from rotorway, gearboxes for the tail drive, electronic ignition from crane cams allison, airframe and seat panels with body. $8,000 Louisiana
|Luiz Henrique, e-mail, 04.03.2011||reply|
Ryan Harris para mim
mostrar detalhes 10:59 (11 horas atrás)
It was sold a long time ago. Please tell me where you saw the ad and I'll erase it--thanks
|Patricia James, e-mail, 03.05.2011||reply|
DO YOU WANT TO BUY OR SELL AN AIRCRAFT OR VEHICLE?? VISIT OUR WEBSITE AT HTTP: / /WWW.ROTANNERMAC.COM
|refakeloanners, e-mail, 23.05.2011||reply|
Wow this forum needs to get cleaned out more often. The number of scammers posting fake loan offers is hiding the actual scorpion sale and buy posts.
|W.Peede, e-mail, 14.06.2011||reply|
I have a scorpion 2 / 133 , It needs the rotor blade mounting brackets that secures the main rotors to the head , also the proper length main rotorblades...Does any one Know of an outlet these items ...
|steve partee, e-mail, 10.08.2011||reply|
i have a 133 for sale not finished 99 percent completfor sale phone 2565460862 in ala for mor infono time to take out
|Paul Staebler, e-mail, 06.11.2013||reply|
Hey guys I have a Scorpion 1 I might be willing to sell. Is there any interest out there? It runs but has not gone up. Let me know. Please text: 563-518-0333
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