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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. www.rotorway.com
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
| Luiz Henrique Bertolotto, e-mail, 12.10.2009 | reply |
I am looking for buy a Scorpion II or kits.
If you have this one call me.
Thanks | | tom, e-mail, 22.09.2009 | reply |
HI any one have parts for a scorpion 2 like air frame tail, | | Robert Moreau, e-mail, 20.09.2009 | reply |
I am rebuliding one of my scorpion II's and need the cabin and seat panel. | | JOHN, e-mail, 19.07.2009 | reply |
hi a need a manuals scorpion too 133 and engine manuals 133 thanks |
| Rick, e-mail, 30.05.2009 | reply |
Hi my uncle has a scorpion too kit. It is not complete just a frame with tons of papers and diagrams even a super 8MM film that came with the plans. He never had time to get parts and work on it. He is getting old now and has no intentions to use it. anyone interested please contact me khalidrahi at hotmail.com please check the email address. It will only be sold within US to US residents only. Thanks | | Robert Moreau, e-mail, 03.05.2009 | reply |
I have a Scorpion II with 1.5 elastomeric rotor, 152 engine with single delorto carb, pro drive cog belt, 2 gear boxes that run the tail rotor. One behind the secondary and the other at the turn up on the tail. Electronic ignition and a reverse clutch. Rolled it over in high wind. It's for sale for $10,000 A little fiber glass repair and a landing gear will get it back flying. | | stan, e-mail, 11.04.2009 | reply |
Seems no ones Email works so you can call 1 360 202 9906
Tell me what ya got (my email is valid I guess you can not cut and past here ? ) | | stan, e-mail, 11.04.2009 | reply |
I have tryed 10 e mail addresses here , None work, What is wrong ? | | Stan, e-mail, 11.04.2009 | reply |
I would like to purchase a scorpion too or equivalent.
I see there are a couple mentioned here no dates, are they for sale ?
Prefer a 145 or better, but will entertain what ever surfaces . 4 /10 09 | |
| | James Doolittle, e-mail, 17.03.2009 | reply |
I have the frame and parts of a Scorpion too, never finished the kit. Will let go cheap! | | chitto, e-mail, 09.03.2009 | reply |
I have a completed Scorpion Too. Located on Vancouver island.A very nice finish on this machine. Must be seen, she's ready for a shake down, brand new carbon fibre blades, includes custom trailer, with all the gear. Priced for quick sale, $25,000 | | zzzzzzzzz, e-mail, 07.03.2009 | reply |
zzzzzzzzzzz | | Jean Badeau, e-mail, 05.02.2009 | reply |
Just a question. Is that helicopter is easy to fly. | | JOHN, e-mail, 25.04.2009 | reply |
HI A NEED BUY A SCORPION 2 PLEASE CONTAC MI THANKS MY PHONE NUM IS 787-209-8097 | | brian, e-mail, 09.01.2009 | reply |
does everyone enjoy flying the scorpion too and also Iam considering buying one if anyone know where I can purchase one. | | dwain forrest, e-mail, 06.12.2008 | reply |
i own 2 scorpion too helicopters and am going to sell one if anyone is interested, they are both ready to fly, please contact me at dwainforrest@yahoo.com for more details
Thanks | | jeff scott, e-mail, 26.10.2008 | reply |
My uncle in w.va. has a scorpion 2 seater that he started in the 80's that he coulded complete due to eyesight gone bad. project is completed to the motor stage with boxes of uninstalled parts. He is moving to Ga. & needs to clean out his shop. | | Dann S., e-mail, 07.10.2008 | reply |
I am looking for anyone in the state of Florida with a Scorpion II, I am interested in trading a nice pro street Camaro for a Scorpion but would like to see one up close and ride in one and talk to someone who has owned one with knowledge about them.I would also like to know about upgrades that are available for them ANY info will help. THANKS Dann | | alan long, e-mail, 30.09.2008 | reply |
I HAVE JUST PURCHASED A SCORPION 1. I AM LOOKING FOR THE LOWER COLLECTIVE PARTS.IF ANYONE KNOWS WHERE I CAN FIND THEM PLEASE LET ME KNOW. THANKS, AL | | Mike Sublett, e-mail, 07.05.2008 | reply |
I have a Scorpion 2 160 hp turbo helicopter kit that I will sell. $16,000. Located in Sanford, NC USA |
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Virtual Aircraft Museum
All the World's Rotorcraft
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Did you ever find A manual for the 133?
I'm looking for an engine repair manual for the 133 and can't find it anywhere.
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