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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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Yes, it's impractical, No, I have no idea where they will put the gas tank yet. I still like the concept and the engineering behind it
1 posted on 05/24/2006 8:25:50 PM PDT by StarfireIV
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To: martin_fierro

Tried to upload the photo. Take a look.


2 posted on 05/24/2006 8:27:38 PM PDT by StarfireIV (John Galt was an optimist)
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To: StarfireIV

The link doesn't work.


3 posted on 05/24/2006 8:29:52 PM PDT by calex59 (No country can survive multiculturalism. Dual cultures don't mix, history has taught us that!)
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To: StarfireIV

sounds interesting, the link isn't working on my end though.


4 posted on 05/24/2006 8:30:22 PM PDT by kinoxi
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To: StarfireIV

5 posted on 05/24/2006 8:31:25 PM PDT by FoxInSocks
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To: StarfireIV
This link may work better.
6 posted on 05/24/2006 8:32:03 PM PDT by Army Air Corps (Four fried chickens and a coke)
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To: StarfireIV
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.
7 posted on 05/24/2006 8:32:27 PM PDT by org.whodat (Never let the facts get in the way of a good assumption.)
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To: calex59
Try this.
8 posted on 05/24/2006 8:32:34 PM PDT by Yehuda ("Land of the free, THANKS TO THE BRAVE!" (Choke on it, pinkos!))
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To: StarfireIV

Good grief. No thanks. The tank looks like it will be on top, a flat tank. I am curious though. Why? I mean I'd like to see it built myself but I don't know if I'd want to ride it.


9 posted on 05/24/2006 8:33:08 PM PDT by billbears (Those who do not remember the past are condemned to repeat it. --Santayana)
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To: Army Air Corps

remind me not to race you! LOL!


10 posted on 05/24/2006 8:33:09 PM PDT by Yehuda ("Land of the free, THANKS TO THE BRAVE!" (Choke on it, pinkos!))
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Comment #11 Removed by Moderator

To: org.whodat

thats a lot of moving parts


12 posted on 05/24/2006 8:34:38 PM PDT by OldCorps
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To: Yehuda

I have though that there should be a thread on FR that is dedicated to gauging posting speed - something of a NASCAR for keyboard and mouse coordination.


13 posted on 05/24/2006 8:34:57 PM PDT by Army Air Corps (Four fried chickens and a coke)
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To: org.whodat

They came out with that model to use on homebuilt aircraft. There ain't NOTHING like sound of a radial engine except maybe two of them.


14 posted on 05/24/2006 8:37:15 PM PDT by dljordan
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To: timgsu

Signed up 5/25/06...


15 posted on 05/24/2006 8:38:19 PM PDT by tubebender (Tagline...I don't need no stinking tagline...)
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To: billbears

"I mean I'd like to see it built myself but I don't know if I'd want to ride it."

My god, think about the HEAT coming off that sucker. But you would have plenty of torque.


16 posted on 05/24/2006 8:39:53 PM PDT by dljordan
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To: Army Air Corps

"something of a NASCAR for keyboard and mouse coordination."

(....blows smoke off his extended fingers, and places them back where they belong, around a cold beer... ,(;>)


17 posted on 05/24/2006 8:44:01 PM PDT by Yehuda ("Land of the free, THANKS TO THE BRAVE!" (Choke on it, pinkos!))
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To: FoxInSocks

Great concept, elegant lines. How does it perform at 40 F below (average low winter temp)? And how much fun it is to ride at those temps?


18 posted on 05/24/2006 8:45:55 PM PDT by ArmyTeach (NOT ON MY WATCH!)
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To: ArmyTeach
Tomahawk V-10 Viper powered bike.


19 posted on 05/24/2006 8:47:45 PM PDT by umgud (FR, NASCAR & 24, way too much butt time)
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To: dljordan
But you would have plenty of torque.

Oh yeah for the five minutes you could sit on it.

20 posted on 05/24/2006 8:48:54 PM PDT by billbears (Those who do not remember the past are condemned to repeat it. --Santayana)
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To: 230FMJ; 506trooper; 68 grunt; AdamSelene235; angry elephant; archy; Askel5; baddog1; baltodog; ...

Visit the FMH Swag Store & support FR!
Send FReepmail if you want on/off FMH list
The List of Ping Lists

21 posted on 05/24/2006 8:51:22 PM PDT by martin_fierro (< |:)~)
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To: dljordan

I was reading about Rotec; the company making the engine. 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. I wonder if having such an oil pump on car and bike engines would prolong engine life by building oil pressure even before the motor was started.


22 posted on 05/24/2006 8:52:15 PM PDT by StarfireIV (John Galt was an optimist)
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To: org.whodat

I guess you've never seen one running with two cylinders gone and the remains of two pistons hanging out of the crankcase. There is a reason most fighter airplanes went from radials to turbines with only a few exceptions (Mustang, Spitfire etc.)
Radials are reliable, and they smell good too.


23 posted on 05/24/2006 8:57:19 PM PDT by kylaka
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To: kylaka

Mustangs and Spitfires had in-line engines. Radials were used by the thousands duriing WW II.


24 posted on 05/24/2006 9:01:37 PM PDT by knew it all the time
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To: kylaka
Thanks for telling me that, I'll put that in my file of dumb things to tell an AIR Force vet.
25 posted on 05/24/2006 9:02:35 PM PDT by org.whodat (Never let the facts get in the way of a good assumption.)
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To: Yehuda

That's funny right thar, I don't care who you are.
/Larry the Cable Guy


26 posted on 05/24/2006 9:03:10 PM PDT by Army Air Corps (Four fried chickens and a coke)
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To: StarfireIV
"I wonder if having such an oil pump on car and bike engines would prolong engine life by building oil pressure even before the motor was started."

It sure would. Not to mention making it easier for the starter to turn the engine over if all the bearings were flooded beforehand.

It's SOP for large marine diesel engines and it's found on some aircraft, but I specified it on auxiliary and emergency generator sets that sit for days and weeks at a time with their heaters going. I know that it dries out the bearings and when they start up, they are required to almost instantly provide full power.

That's gotta be hard on dry bearings.

27 posted on 05/24/2006 9:04:30 PM PDT by nightdriver
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To: martin_fierro
FUELING 3 Cylinder.

28 posted on 05/24/2006 9:05:31 PM PDT by JoeSixPack1
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To: JoeSixPack1; StarfireIV; Tijeras_Slim; blackie; BraveMan; pt17; uglybiker; ...

1 hamsterpower.

29 posted on 05/24/2006 9:08:12 PM PDT by martin_fierro (< |:)~)
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To: StarfireIV

Yeah, right, and our airplanes are going back to double wingers. If this is real, and I doubt it, it's one ugly sucker that I would not be interested in.


30 posted on 05/24/2006 9:08:28 PM PDT by fish hawk
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To: ArmyTeach

40 below? Do snowmobiles even work at 40 below?


31 posted on 05/24/2006 9:11:02 PM PDT by formercalifornian (One nation, under whatever popular fad comes to mind at the moment, indivisible...)
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To: StarfireIV

This one has a much better look, IMHO.

32 posted on 05/24/2006 9:15:46 PM PDT by Squeako (ACLU: "Only Christians, Boy Scouts and War Memorials are too vile to defend.")
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To: knew it all the time

That was my point. There never was a carrier based in-line water cooled engine. They weren't reliable enough.


33 posted on 05/24/2006 9:18:55 PM PDT by kylaka
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To: StarfireIV
Now HERE's a radical radial approach...


34 posted on 05/24/2006 9:21:17 PM PDT by ProtectOurFreedom
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To: StarfireIV

35 posted on 05/24/2006 9:22:44 PM PDT by tophat9000 (If it was illegal French Canadians would La Raza back them? Racist back there race over country)
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To: org.whodat

It makes a neat hydraulic motor, as well as an airplane engine. Any V-twin is just a pie slice out of one.

The big advance in radial engine technology came about on late WW1 airplanes when it was decided to stop spinning the entire crankcase while holding the crankshaft stationary.


36 posted on 05/24/2006 9:22:54 PM PDT by 308MBR ( Somebody sold the GOP to the socialists, and the GOP wasn't theirs to sell.)
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To: knew it all the time

Yep, the FW 190 had a radial, and it was as fast(faster than most) as any other fighter and more reliable than the ME109(I refuse to call it a BF109). The P47 also had a radial. All bombers had radials.


37 posted on 05/24/2006 9:26:17 PM PDT by calex59 (No country can survive multiculturalism. Dual cultures don't mix, history has taught us that!)
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To: JoeSixPack1
Hello Joe!! Your picture is part of a radial engine. So is a Harley, Indian, Motoguzi etc.. Nothing new here.
38 posted on 05/24/2006 9:33:24 PM PDT by Fielding (Sans Dieu Rien)
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To: org.whodat

I guess you didn't see many radials in 1971. Then again, it depends if you flew 'em, fixed 'em, or played with the paper ones. Turbines made the whole argument moot though. My dad fixed 'em from 1942 - 1960. His bet, and the Navy's bet, was on the radial as being able to take the most punishment.


39 posted on 05/24/2006 9:40:06 PM PDT by kylaka
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To: Fielding
Hello Fielding! Or is it Captain Obvious today? :-)

I hope no one posts any WW2 aircraft.

40 posted on 05/24/2006 9:48:24 PM PDT by JoeSixPack1
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To: StarfireIV
There used to be such a thing marketed as an "Accu-Sump" It's a pre-oiler that saves oil and pressure in a tank kind of like a pressure tank for a well. It used an electric valve to release the oil pressurized during the last running before starting and also made up for low pressure at low rpm or pump cavitation. Not hard to make, especially if you substitute a manual valve. It may still be around.
41 posted on 05/24/2006 9:52:37 PM PDT by CrazyIvan (If you read only one book this year, read "Stolen Valor".)
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To: ProtectOurFreedom

That thing is hideous.


42 posted on 05/24/2006 9:55:32 PM PDT by Centurion2000 (The social contract is breaking down.)
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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

Friend of mine had a Saab (or maybe a Volvo) of 60's vintage that had a radial engine in it. Three cylinders, IIRC. It was mounted with the plane of the pistons tilted back from the front bumper to the base of the windshield, more or less. Seemed to work fine, always started, even in Nebraska winters. Since it was air cooled, it used a separate gasoline powered heater, rather than air ducted over the cooling fins like early VW bugs did.

As to radials being nothing but air pumps, the folks who flew B-17s, B-29s, P-47 Thunderbolts, and F-4U Corsairs, as well as FW-190s and Mitsubishi Zeros would probably disagree.

I think a variant on the Wankel (as in the rotary engined Mazda RX-8) might make a good compact high powered motorcycle engine too.

43 posted on 05/24/2006 9:59:56 PM PDT by El Gato
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To: tophat9000

looks like it has a ferris wheel for a motor


44 posted on 05/24/2006 10:01:16 PM PDT by drlevy88
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To: FoxInSocks

i've never even been on a motorcycle in my life (i'm 51). i would buy one of those, though.


45 posted on 05/24/2006 10:01:23 PM PDT by johnboy
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To: johnboy
i've never even been on a motorcycle in my life (i'm 51). i would buy one of those, though.

Man, you don't know what you're missing. We're about the same age and I still ride. Been doing it for 40 years.

46 posted on 05/24/2006 10:05:20 PM PDT by AlaskaErik (Everyone should have a subject they are ignorant about. I choose professional corporate sports.)
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To: 308MBR; Bob Ireland
"...The big advance in radial engine technology came about on late WW1 airplanes when it was decided to stop spinning the entire crankcase while holding the crankshaft stationary..."

That would be the Le Rhone Rotary engine.

No wonder ya needed goggles flying one of those - oil flyin' everywhere.................FRegards

47 posted on 05/24/2006 10:08:30 PM PDT by gonzo (I'm as confused as a hungry baby in a topless club...)
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To: knew it all the time

This is basically a pair of cylinders off a Rolls Royce Merlin aero engine originally fitted to a Mosquito bomber.

Lucky Keizer's 5 litre V twin.

48 posted on 05/24/2006 10:12:48 PM PDT by KDD (A wink is as good as a nod to a blind horse.)
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To: StarfireIV
At first, I thought this article was about a Wankel engine. Not a rotary, but a radial!

Anyway, here's a picture of a Wankel bike, a Suzuki RE-5, with a single rotor ~500cc displacement engine.


49 posted on 05/24/2006 10:28:45 PM PDT by Liberal Classic (No better friend, no worse enemy. Semper Fi.)
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To: dljordan
My god, think about the HEAT coming off that sucker. But you would have plenty of torque.

I can see airflow and cooling problems somewhere there.

It looks like 3 1/2 v-twins to me.

50 posted on 05/24/2006 10:33:25 PM PDT by Smokin' Joe (How often God must weep at humans' folly.)
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