Quick question for folks that know and understand stuff on reciprocating steam engines please correct me if I'm wrong is the SS Badgers skinner uniflow considered a quadruple expansion compound steam engine? My limited understanding is it has twin four cylinder steam engines with 2 smaller cylinders for high pressure steam and 2 larger cylinders for lower pressure per engine?
Great lake boats, a good video
- Thread starter ArlyA
- Start date
MossRoad
Super Moderator
- Joined
- Aug 31, 2001
- Messages
- 60,165
- Location
- South Bend, Indiana (near)
- Tractor
- Power Trac PT425 2001 Model Year
The way I understand it is each cylinder has two pistons. One large one on the bottom and one small one on the top. Since the steam enters and exits on each side of each piston, that's 4 entries and 4 exits on each stroke.
Is that quadruple expansion? Or is that two-stroke double expansion? I have no idea, but it sure is neat.
MossRoad
Super Moderator
- Joined
- Aug 31, 2001
- Messages
- 60,165
- Location
- South Bend, Indiana (near)
- Tractor
- Power Trac PT425 2001 Model Year
She sure comes into the harbor fast, that's for sure!
MossRoad
Super Moderator
- Joined
- Aug 31, 2001
- Messages
- 60,165
- Location
- South Bend, Indiana (near)
- Tractor
- Power Trac PT425 2001 Model Year
Frankenkubota
Elite Member
- Joined
- Jun 11, 2020
- Messages
- 2,828
- Location
- Carthage NC...Deep in the woods
- Tractor
- Kubota MX 5800, SkidPro 4 in 1, Ratchet rake, SkidPro pallet forks
i'm not a boat guy, thankfully my brother got that gene but.....
first time i've heard a boat referred to as a him....he...
I see the name so makes sense but....first time for me.
OP
ArlyA
Super Member
- Joined
- Mar 18, 2016
- Messages
- 9,503
- Tractor
- Polaris Boss 6x6 with pods (tracks) Center actuating lawn mower by Husky
I'm surprised that the badger has no thrusters... The Ranger III is the Isle boat that resides here in Houghton. In this video you can see its thrusters being used multiple times and the loud wine you hear is them. The canal he rotates around in has a strong current. I've been on this boat a few times and in its engine room.
They have pulling that ship into it's slip like a choreographed science though, using its anchor and mooring lines to sharply pivot that ship is fun to watch.
I kind of get how triple and quadruple expansion steam engines work each cylinder is inline as steam pressure decreases cylinders and pistons get larger? So the first cylinder the steam gets to is the smallest getting larger on subsequent cylinders as steam pressure decreases? But on the badgers engines the connecting rod attached to the high pressure smaller piston on the top is connected to the lower pressure larger piston on bottom which in turn is connected to the crankshaft? Whoa
Attachments
MossRoad
Super Moderator
- Joined
- Aug 31, 2001
- Messages
- 60,165
- Location
- South Bend, Indiana (near)
- Tractor
- Power Trac PT425 2001 Model Year
Engineering marvel, that's why it' on the historic list.
10knots.