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Old 10-26-2012, 12:39 PM   #17656
PT Rider
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Quote:
Originally Posted by Jim Moore View Post
Power = torque x rpm

Horsepower = torque x rpm / 5252.
Only for Harleys, Victorys, and Indians.

For metric bikes
Horsepower = torque (in newton-meters) x rpm / 7121
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Old 10-26-2012, 12:46 PM   #17657
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Originally Posted by dbuzz View Post
I prefer long strokes over short strokes ....
Noted.
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Old 10-26-2012, 12:46 PM   #17658
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Hmmm Big Diesels...



Ya know you're running a big motor when you have a separate room off the engine room for the controls.

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Old 10-26-2012, 01:04 PM   #17659
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Quote:
Originally Posted by klaviator View Post
Skill. Throwing a tall hack like a Ural around the curves takes skill, but doing it wth the passenger on the pillion seat and only a dog in the chair makes it MUCH more difficult. This guy is good.

Sent from the voices in my head, and transcribed by their drinking buddy.
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Old 10-26-2012, 01:15 PM   #17660
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Quote:
Originally Posted by RidingDonkeys View Post
Skill. Throwing a tall hack like a Ural around the curves takes skill, but doing it wth the passenger on the pillion seat and only a dog in the chair makes it MUCH more difficult. This guy is good.

Sent from the voices in my head, and transcribed by their drinking buddy.
There probably isn't too much being thrown around since the kid in the back fell asleep.
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Old 10-26-2012, 01:15 PM   #17661
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Quote:
Originally Posted by RidingDonkeys View Post
Skill. Throwing a tall hack like a Ural around the curves takes skill, but doing it wth the passenger on the pillion seat and only a dog in the chair makes it MUCH more difficult. This guy is good.

Sent from the voices in my head, and transcribed by their drinking buddy.
Looks like there's also a bored/sleeping kid in a bike helmet behind the dog (not that it changes anything, just noting).
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Old 10-26-2012, 01:49 PM   #17662
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Originally Posted by PT Rider View Post
Nah. A large container ship engine, over 100,000 hp these days from an in-line 14 cylinder two stroke diesel, has a top speed of about 100 rpm and low speed of about 35 rpm. 960 mm bore x 2500 mm stroke, piston speed of 8.5 meters/second, burning very heavy black fuel oil (centrifuged and heated to 250°F). These are directly connected to the prop and the engine is reversible. The engine designed for a very deep draft oil tanker or bulk carrier with a very large diameter prop (more efficient) may have a top speed of about 70 rpm. A cruise ship is more likely to have several medium speed engines, maybe straight 8, four stroke, up to 640 mm bore x 900 mm stroke, 23,000 hp, 300 rpm, piston speed of 10 m/sec. These will either be geared and clutched to a prop or run through a generator with an electric propulsion motor driving the prop. The medium speed engines with more cylinders in the total layout have more maintenance, but they're more compact so the ship has more staterooms to sell.
http://www.wartsila.com/en/engines/m...nes/wartsila64
http://www.wartsila.com/en/engines/low-speed-engines

I've run engines up to a twelve cylinder that put out 57,500 hp, the biggest in it's day, plus three 2700 hp straight-8 generator engines.
The ammunition ship I served on was a wartime C-3 hull. We had a pair of 9 cylinder 2-stroke Nordbergs that made 3000 hp apiece. They drove through electromagnetic clutches to pinions on a central bull gear that drove the prop shaft. They were direct reverse, and in maneuvering combination, one ran ahead, the other astern. The engines idled until one clutch or the other was energized, then the rpm would come up to whatever the throttle was set at. Max rpm was 225. We could make 18 knots on a good day.

The 4 eight cylinder DC generators were 250 kw each, powered by GM Cleveland Diesel 8-268A 2 stroke engines. They're the reason I can't hear worth a damn today. The sound level had to have been 100 dB continuously.
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Old 10-26-2012, 01:51 PM   #17663
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Oh goodie!!! SHIPS!!! We haven't gone there before.





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Old 10-26-2012, 01:54 PM   #17664
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Arrrr

wonder how the martime oil thread will turn out?

Quote:
Originally Posted by DAKEZ View Post
Oh goodie!!! SHIPS!!! We haven't gone there before.



I


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A Brit named Billy once said something silly; he so wrongly concluded that Ural deluded.
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Old 10-26-2012, 02:00 PM   #17665
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Originally Posted by ttpete View Post
Nordberg
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Old 10-26-2012, 02:15 PM   #17666
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Quote:
Originally Posted by RDTCU View Post
Until that corner tightens up or something jumps out in front of you. You respond a lot quicker if you're already in position.
only if you need to tighten you line,it makes it much harder to to the other way
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Old 10-26-2012, 02:45 PM   #17667
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Quote:
Originally Posted by Bill Harris View Post
Asian.



--Bill
27.3 miles per hour.
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Old 10-26-2012, 03:13 PM   #17668
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Quote:
Originally Posted by klaviator View Post
Quote:
Originally Posted by RidingDonkeys View Post
Skill. Throwing a tall hack like a Ural around the curves takes skill, but doing it wth the passenger on the pillion seat and only a dog in the chair makes it MUCH more difficult. This guy is good.



Sent from the voices in my head, and transcribed by their drinking buddy.

There's also a child safety seat with a child in it, in the trunk. The kid is wearing a bicycle helmet. Can't tell if he/she is wearing any eye protection.
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Old 10-26-2012, 05:29 PM   #17669
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Quote:
Originally Posted by Mr_Gone View Post


I think we need ANOTHER discussion on "chaps" versus "assless chaps." Proceed.
All chaps are assless or they would be pants.
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Old 10-26-2012, 05:45 PM   #17670
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Quote:
Originally Posted by DAKEZ View Post
Oh goodie!!! SHIPS!!! We haven't gone there before.

Have you not seen some of the barges that were pictured here, and the pirates?????
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