Hi Vance
I need to order axels for my K350's trailer that i
am going to build ,do you have the weight for me.
Thankyou very much.
GlenSA
----- Original Message -----
Sent: Saturday, March 27, 2010 3:53
AM
Subject: Re: [PSUBS-MAILIST] Rudder
Indicator using 3 Reed Relays
30 knots? Shades of Cliff
Redus!!!
Maybe there was some amount of weather vane stuff, but with 8 tons and up
of submarine, it didn't seem to have much of an effect. If it did, we just
compensated with that same rudder.
I still like the electric linear operator for this. The ones I've seen
look like hydraulic cylinders with a rod coming out one end through a seal.
Have you seen those? Inside is an electric motor and a worm gear.
Extension/retraction has some sort of indicator, too (as an option). I wonder
what those puppies cost?
Vance
-----Original
Message----- From: ShellyDalg@aol.com To:
personal_submersibles@psubs.org Sent: Fri, Mar 26, 2010 9:38 pm Subject:
Re: [PSUBS-MAILIST] Rudder Indicator using 3 Reed Relays
In a message dated 3/26/2010 6:23:18 P.M. Pacific Daylight Time, vbra676539@aol.com writes:
Maybe I can get some real info about the things which might actually
prove helpful.
Vance
Hi Vance. I understand how a big rudder helps with steering, whether the
prop is turning or not, as long as there's some travel. With a big rudder,
does that make the sub turn into the current if there is some cross current ?
You know, like a weather vane.
Dean's sub has a big rudder and I was wondering how it would affect the
sub's travel.
The big "fin" on the back of my sub may act something like a rudder in a
cross current.
I needed to add the fin because early scale model testing in moving
water produced some "wobbling" and by adding the vertical fin it stopped. Now,
I don't have any means to equate scale model speed in the pool to real life
speed for the full size sub, but the water speed in the pool was probably a
lot faster than this little boat will ever go, so maybe the fin
wasn't really necessary for the expected slow speed the sub will actually
go. If I had to make a wild guess, I'd say the pool speed was a scaled down 30
knots or so.
Frank D.
|