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Thread: O-100-- interesting new engine

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    Moderator Dana's Avatar
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    O-100-- interesting new engine

    This is interesting... a 100ci 60HP (claimed) engine using two cylinders from a Continental O-200 and other components:

    Introducing the Pegasus Power O-100 Light Sport Aircraft Engine

    At $2500 for the new parts plus you still have to buy the O-200 parts it might be a pricey alternative to, say, the HKS. Or it might be cheaper; I have no idea what Continental parts run these days.

    The single web page is lacking details, though, and the engine picture is an "artist conception" though...

    -Dana

    Be wary of strong drink. It can make you shoot at tax collectors-- and miss.
    Last edited by Dana; July 18th, 2012 at 09:00 PM. Reason: ci not cc

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    Re: O-100-- interesting new engine

    Neat idea, and we need more motors in this power range. But not if it's another $7000 motor by the time you're done.
    "If you have built castles in the air, your work need not be lost; that is where they should be. Now put the foundations under them." - Henry David Thoreau

    Design Project: Conceptual Design of an "Inexpensive" Single-Seat Motorglider
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    Registered User Jay Kempf's Avatar
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    Re: O-100-- interesting new engine

    Quote Originally Posted by Topaz View Post
    Neat idea, and we need more motors in this power range. But not if it's another $7000 motor by the time you're done.
    If I buy two I am still ahead of an 0-200. Sheesh. So why is an O-200 like 10s of thousands? If these guys are that good they should build an O-200 for $4500. Adding two more cylinders can't be as much as the R&D to make a whole engine.
    Jay K.

    VT USA

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    Re: O-100-- interesting new engine

    Quote Originally Posted by Jay Kempf View Post
    If I buy two I am still ahead of an 0-200. Sheesh. So why is an O-200 like 10s of thousands? If these guys are that good they should build an O-200 for $4500. Adding two more cylinders can't be as much as the R&D to make a whole engine.
    You'll note that their kit is not for a complete engine. As for the additional costs of a certified, production motor, you have the requirement for a large factory to make the original parts, product liability insurance, and other such overhead to blame for that.
    "If you have built castles in the air, your work need not be lost; that is where they should be. Now put the foundations under them." - Henry David Thoreau

    Design Project: Conceptual Design of an "Inexpensive" Single-Seat Motorglider
    Discussion Thread for the Project: Discussion: Conceptual Design of an "Inexpensive" Single-Seat Motorglider

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    Registered User rtfm's Avatar
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    Re: O-100-- interesting new engine

    You mean a 1000cc engine, don't you (not 100cc)

    Looks really cool though. Wouldn't mind one up front of the Razorback...

    Cheers,
    Duncan
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    Re: O-100-- interesting new engine

    Quote Originally Posted by rtfm View Post
    You mean a 1000cc engine, don't you (not 100cc)

    Looks really cool though. Wouldn't mind one up front of the Razorback...

    Cheers,
    Duncan
    Oops... I meant 100 cubic inches, not cc... that's 1639cc.

    -Dana

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    Re: O-100-- interesting new engine

    http://www.airpowerinc.com/productca...&prodid=325501

    Looks like $830 each for the cylinder assemblies. So $1660 + $2500 and what else is needed ?

    Looks like you need a camshaft and 4 lifters 4 push rods and push rod tubes
    Oil pump and pickup tube
    Drive gears for oil pump and camshaft ?
    2x connecting rods + all bearing shells
    Gasket set with seals ?
    Carb + heat box and exhaust

    It looks to me that unless someone does a package deal (Vans for example) this could be pretty expensive. If the quality of the parts is good, and this turns out not to be a scam, it could be a good engine. The weight seems in the right ball park too, bit of course what did they weigh ? Just the parts they sell in the kit ? Hope not.

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    Re: O-100-- interesting new engine

    I wonder how many of the cannibalized parts are highly likely to be reusable from a worn out engine? If all/most of the parts tend to be ones that are serviceable during an overhaul, then scrounging for run out O200s might allow you to get the parts for cheap.
    Great minds discuss ideas
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    Registered User Autodidact's Avatar
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    Re: O-100-- interesting new engine

    With all of these airframes suitable for it, and several more besides, I think there might be a potentially decent market for it. I hope it's real.

    Bristol Cherub,

    Dry Weight: 98 lb
    Power : 36 hp @ 3,200 rpm

    Used in,

    Avia BH-2
    Avro Avis
    Beardmore Wee Bee
    Bristol Brownie
    Cranwell CLA.2
    Cranwell CLA.3
    Cranwell CLA.4
    Dart Pup
    Granger Archaeopteryx
    Halton Mayfly
    Halton Minus
    Hawker Cygnet
    Messerschmitt M17
    Meyers Midget
    Cherub-powered Short Satellite
    Mignet HM.14 Pou-du-Ciel
    Parnall Pixie
    Powell Racer
    RAE Scarab
    RAE Hurricane
    Short Cockle
    Short Satellite
    Supermarine Sparrow
    Vickers Vagabond
    Westland Woodpigeon
    Westland-Hill Pterodactyl


    ABC Scorpion,

    Dry Weight: 90 lb
    Power : 30 hp @ 2,750 rpm

    Used in,

    ABC Robin
    Boulton Paul Phoenix
    BFW M.19
    BFW M.23
    Comper Swift
    de Havilland Humming Bird
    Hawker Cygnet
    Heath Parasol
    Hendy Hobo
    Henderson-Glenny Gadfly
    Kay Gyroplane
    Luton Minor
    Mignet HM.14 Pou-du-Ciel
    SAI KZ I
    Short Satellite
    Snyder Buzzard
    Westland Woodpigeon


    Aeronca E-113/J-99 (J.A.P.),



    Dry Weight: 118 lb
    Power : 36-40 hp @ 2,400-2,520 rpm

    Used in,

    E-113

    Aeronca C-3
    Aeronca K
    Welch OW-6M


    J-99 (J.A.P.)

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    Britten-Norman BN-1
    Currie Wot
    Dart Kitten
    Hants & Sussex Herald
    Heath Parasol
    Hillson Praga
    Luton Minor
    Peterborough Ely
    Slingsby Motor Tutor
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    Say, did I ever tell you guys my hummus joke?

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    Re: O-100-- interesting new engine

    Interesting idea.

    If we used scrounged timeout or other parts that are servicable such as rods etc and just rebuild other needed parts then a cheap motor could be possible.

    A reasonable alternative to a VW kit engine at the lower power ranges and a lot lighter

    The quality kit VW motors are far from cheap, so it may be competitive depending on local parts availability.

    If it weighs only 100 pounds ready to fly then, it has a good potential.

    Pity they do not do a kit as $5000. That might be a winner

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    Re: O-100-- interesting new engine

    I don't buy the info on estimated 60 hp at 2800, sure 50 rpm more, but, first an O-200 is hardly 100 hp, and with half the cylinders the power is less then half, due to longer intervalls between working stroke, 3 gallon (at cruise) 3*6=18 lb / 0,5 = 36 hp or at / 0,45 = 40 hp
    BUT it sure looks attractive.
    Jan.

    A designer knows he has achieved perfection not when there is nothing left to add, but when there is nothing left to take away. Antoine de Saint-Exupery
    "Flight by machines heavier than air is unpractical and insignificant, if not utterly impossible." Simon Newcomb, 1902

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    Registered User Dan Thomas's Avatar
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    Re: O-100-- interesting new engine

    Quote Originally Posted by Jan Carlsson View Post
    I don't buy the info on estimated 60 hp at 2800, sure 50 rpm more, but, first an O-200 is hardly 100 hp, and with half the cylinders the power is less then half, due to longer intervalls between working stroke, 3 gallon (at cruise) 3*6=18 lb / 0,5 = 36 hp or at / 0,45 = 40 hp
    BUT it sure looks attractive.
    I do agree that 100 hp for an O-200 is optimistic. I have flown 150s and Champs with O-200s, and an Aircoupe with the C-90. The C-90 left the others in the dust, and at the same power-to weight ratio, too.

    Dan

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    Re: O-100-- interesting new engine

    Quote Originally Posted by Dan Thomas View Post
    I do agree that 100 hp for an O-200 is optimistic. I have flown 150s and Champs with O-200s, and an Aircoupe with the C-90. The C-90 left the others in the dust, and at the same power-to weight ratio, too.

    Dan

    When doing prop calculations on a O-200 we use 85 hp as standard, (depends on how it is equipped) The few first O-200 prop we made, we used 100 HP as input naturally, The first installed was on a Varieze, it never flew with that prop. the Mk2 was a success, I think there was 3 Mk2 models for different O-200 planes of this early propellers made by Hercules Props is UK. learning money! There have been just a few airplanes with the same engine/plane combination, so a flexible software and manufacturing system (CNC) is a must. The Silent Twister team in UK is unusual, buying several props of same kind.
    Jan.

    A designer knows he has achieved perfection not when there is nothing left to add, but when there is nothing left to take away. Antoine de Saint-Exupery
    "Flight by machines heavier than air is unpractical and insignificant, if not utterly impossible." Simon Newcomb, 1902

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    Re: O-100-- interesting new engine

    The question is whether the use of an electronic ignition coupled with fuel injection would in fact boost the power output to 60hp ? That certainly looks a lot more feasible, but of course can't be directly compared to the old O200 then.

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    Re: O-100-- interesting new engine

    question is, have it been running yet? the picture is a artist conseption,
    it say dual magneto ignition.
    Its a new conscept and a new tread we have to wait for result.
    Jan.

    A designer knows he has achieved perfection not when there is nothing left to add, but when there is nothing left to take away. Antoine de Saint-Exupery
    "Flight by machines heavier than air is unpractical and insignificant, if not utterly impossible." Simon Newcomb, 1902

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