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Radial Engine Powered Motorcycle
The Kneeslider, JRL Cycles ^ | May 2006 | The Kneeslider

Posted on 05/24/2006 8:25:47 PM PDT by StarfireIV

The radial engine is a thing of beauty and it looks like several other folks think the same thing. After we posted the radial motorcycle yesterday, we contacted Rotec Engineering, makers of these 7 cylinder radial engines, and according to them, there are at least 4 of these projects in various stages of completion at the present time. Yesterday’s bike and this one as well seem to be a bit short of running. I see no provisions for exhaust yet and no front brakes. This bike has no handlebars either so we’re still in the building stage. At first glance, you wonder if these guys are serious but these do seem to be real works in progress.

(Excerpt) Read more at thekneeslider.com, http: ...


TOPICS: Business/Economy; Miscellaneous; Unclassified
KEYWORDS: choppers; motorcycles; radialengines
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To: StarfireIV


"Millet had patented his first motorcycle in 1888, and had several improved versions. It incorporated a radial engine around the hub of the rear wheel, with the five cylinders rotating around the hub."
51 posted on 05/24/2006 10:36:07 PM PDT by RS ("I took the drugs because I liked them and I found excuses to take them, so I'm not weaseling.")
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To: Squeako

Better, more even cooling across the jugs, too, from the looks of it.


52 posted on 05/24/2006 10:41:27 PM PDT by Smokin' Joe (How often God must weep at humans' folly.)
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To: StarfireIV

Gee I wonder how Paul Jr of American Chopper would use that design in the bikes they build at Orange County Choppers?

FYI I live just 7 miles from the OCC Shop, and in my former life as a taxi cab driver I actually drove Mikey to work a few times, my former companies cars are actually in a few episodes, oh and BTW he is a good tipper! :-)


53 posted on 05/24/2006 10:44:07 PM PDT by The Chief (Nothing to see here, move along.....)
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To: Smokin' Joe

instead of potato potato it would go hashbrown hashbrown


54 posted on 05/24/2006 10:44:07 PM PDT by drlevy88
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To: drlevy88

LOL!


55 posted on 05/24/2006 10:45:51 PM PDT by Smokin' Joe (How often God must weep at humans' folly.)
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To: StarfireIV

Gas tank where it always goes, but only 1 gallon, very slender? Or in front of the rotary with fuel injection?


56 posted on 05/24/2006 10:49:21 PM PDT by monkeyshine
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To: Liberal Classic

Had a 4 speed Mazda RX-2. I could beat any V8 under 350 cui with an automatic.


57 posted on 05/24/2006 10:50:27 PM PDT by Westlander (Unleash the Neutron Bomb)
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To: JoeSixPack1

"I hope no one posts any WW2 aircraft."

No Supermarine Seafire pics, please!


58 posted on 05/24/2006 11:08:51 PM PDT by wolficatZ (Detective Chief Superintendent Christopher Foyle -"You'll hang for this!")
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To: Liberal Classic
Nice looking bike. If it accelerates like the Mazda RX2, it must be a scary beast to ride.
59 posted on 05/24/2006 11:14:51 PM PDT by Myrddin
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To: monkeyshine

It looks like there would be a fair amount of room, beneath the seat.


60 posted on 05/24/2006 11:16:51 PM PDT by drlevy88
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To: StarfireIV

Shouldn't that be "radio"powered motorcycle?


61 posted on 05/24/2006 11:42:40 PM PDT by taxesareforever (Never forget Matt Maupin)
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To: RS

Talk about OLD school...


62 posted on 05/24/2006 11:59:57 PM PDT by kenth
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To: kenth

I'm guessing these radials throw oil like crazy. Rider would be covered in it.


63 posted on 05/25/2006 12:19:12 AM PDT by Kirkwood
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To: RS
That actually looks like an insanely efficient placement for full use of the rotary engine...if the weight of the back wheel doesn't get the bike stuck all the time. Funky spoke setup, too.

I wonder why none of these homebuilts have tried the direct axle setup, even as a trike? Probably serious issues with controlling the axle, with these big engines, but a small engine would work.

64 posted on 05/25/2006 3:01:21 AM PDT by LibertarianInExile ('Is' and 'amnesty' both have clear, plain meanings. Are Bill, McQueeq and the President related?)
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To: Squeako

What's to keep the torque from that sideways radial from turning the bike on it's side?


65 posted on 05/25/2006 3:54:12 AM PDT by CPOSharky (Go home and fix your own country before you complain about ours.)
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To: kylaka
That was my point. There never was a carrier based in-line water cooled engine. They weren't reliable enough.

And radials are much lighter, always a carrier based consideration.

66 posted on 05/25/2006 3:57:14 AM PDT by CPOSharky (Go home and fix your own country before you complain about ours.)
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To: CPOSharky

Possibly some kind of counter-rotating disk. The gyroscopic forces on the bearings would still be intense.


67 posted on 05/25/2006 3:57:42 AM PDT by The Red Zone
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To: calex59
All bombers had radials.

A few bombs, I think, were dropped by Lancasters and Mosquitos. Most Ju88s had inline engines too, although the radiator design gave it the look of a radial.

68 posted on 05/25/2006 4:48:36 AM PDT by Uncle Fud
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To: Kirkwood
If there's no oil on the outside or pooled on the ground.... there isn't ANY on the inside..

[Wisdom from a second-tour T-28B/C Instructor]

69 posted on 05/25/2006 5:23:09 AM PDT by Wings-n-Wind (All fo the answers remain available; Wisdom is gained by asking the right questions)
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To: 308MBR
It makes a neat hydraulic motor, as well as an airplane engine. Any V-twin is just a pie slice out of one.

Not all of them, IMHO. The HD style common-crankpin engines are. Some of them are more like a vertical twin with the cylinders staggered.

70 posted on 05/25/2006 5:25:24 AM PDT by tacticalogic ("Oh bother!" said Pooh, as he chambered his last round.)
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To: martin_fierro; JoeSixPack1; StarfireIV; Tijeras_Slim; blackie; BraveMan; pt17; uglybiker
That reminds me of my first motorcycle! The hamster cage was more stylish on mine, though . . .


71 posted on 05/25/2006 5:45:17 AM PDT by BraveMan
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To: StarfireIV

"There was mention of a supplemental electric oil pump which drains the oil out of the lower cylinders on shutdown thus preventing piston rod damage and also builds up oil pressure before the thing gets fired up."

That's a problem. I had a friend that had a 39' Scarab radial on his plane and he always checked by pulling the prop through to see if it was locked up.


72 posted on 05/25/2006 6:19:40 AM PDT by dljordan
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To: martin_fierro

The Wankel engine would look much better.


73 posted on 05/25/2006 6:32:06 AM PDT by wizr (John 3:16)
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To: org.whodat

"How many time has the radial engine been reborn? Every time so far it's proved to be a good air pump and that's about all."




That's just silly. Ever hear of the B-17? It did pretty well with its four engines. Radial engines powered most aircraft for a long, long time. They worked very nicely, thanks.

Sometimes, broad statements like yours just beg for a response.


74 posted on 05/25/2006 6:55:37 AM PDT by MineralMan (non-evangelical atheist)
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To: StarfireIV

I picked up the current Popular Science at a bookstore yesterday, and one of the "What's New" items was a bicycle wheel with a 25cc (I think) *rotary* engine built into it, designed to easily install in the front forks of any bicycle to convert it to a moped. The fuel is kept in a standard water-bottle sized container, that fits in the water bottle holder on the downtube. Looked pretty ingenious to me- no idea if it will work or not.


75 posted on 05/25/2006 11:44:46 AM PDT by TexasBarak (I don't know about you folks, but I aim to misbehave.)
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To: MineralMan
That's just silly

At one time the t-model was state of the art, but the last time I checked the year was 2006, not 1940's. and if you had ever studied power mechanics you would find that all combustion motor are first and foremost a air pump.

76 posted on 05/25/2006 4:41:11 PM PDT by org.whodat (Never let the facts get in the way of a good assumption.)
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To: JoeSixPack1
Jim Feuling and his truly magnficent idea were taken from us far too soon...
Requisicat In Pace
77 posted on 05/26/2006 10:00:57 PM PDT by StarfireIV (John Galt was an optimist)
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To: KDD

Did you see the report on GUNBUS also under construction. Jugs taken from a Pratt and Whitney sized radial.


78 posted on 05/26/2006 10:01:50 PM PDT by StarfireIV (John Galt was an optimist)
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To: nightdriver

Sigh... Yep, and It could be sooo simple like the glow plug light on old Mercedes diesels. When the light goes off, the oil pressure is at, say 70%. When you start the engine and the pressure builds up from the mech pump, the aux pump shuts off. You could have six figure odometers like the old MB oil burners too.


79 posted on 05/26/2006 10:11:58 PM PDT by StarfireIV (John Galt was an optimist)
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To: StarfireIV
"When you start the engine and the pressure builds up from the mech pump, the aux pump shuts off."

Of course, and when the pressure falls below a certain value, it would come back on. That way, hot oil, hot day, idling engine in traffic would have the advantage of keeping bearings flooded and lifters pumped up.

It would definitely increase engine longevity.

80 posted on 05/26/2006 10:30:08 PM PDT by nightdriver
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To: nightdriver

Thank you. I had not even considered that. Did you see the link to the Rotec site? The pump is listed under accessories.


81 posted on 05/26/2006 11:05:30 PM PDT by StarfireIV (John Galt was an optimist)
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To: org.whodat
How many time has the radial engine been reborn?

Many. For motorcycle usage, most recently Hercules, Norton and Suzuki would be among the contenders with their Wankel rotary offerings, at least a cousin to the Radial. There's even been a Soviet-era Dnieper fitted with one of the things....


82 posted on 05/30/2006 1:11:16 PM PDT by archy (I am General Tso. This is my Chief of Staff, Colonel Sanders....)
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To: wizr
The Wankel engine would look much better.

Not necessarily. See pic and links in post #82, above.

83 posted on 05/30/2006 1:12:55 PM PDT by archy (I am General Tso. This is my Chief of Staff, Colonel Sanders....)
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To: archy

Guess you are right. To me, the other radial looks like a circus wagon.


84 posted on 05/30/2006 2:29:57 PM PDT by wizr (John 3:16 & 17)
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To: wizr
Guess you are right. To me, the other radial looks like a circus wagon.

They look a lot better hanging out on an aircraft wing or nose where they belong, with cooling air flowing freely over their heads and cylinders, and pretty aluminum nacelles and shrouds directing that flow.


85 posted on 05/30/2006 2:34:09 PM PDT by archy (I am General Tso. This is my Chief of Staff, Colonel Sanders....)
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To: StarfireIV

.


86 posted on 06/19/2006 7:26:24 PM PDT by ZOOKER ( <== I'm with Stupid...)
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