USS Plunger 595

[Slats]

Andy
thanks for the heads up on the pinch valve - looks like I have a range of options here. If I go this way I'll keep the servo dry in the WTC and run a linkage out to a servo clevis that can work the pinch.

Thanks
John

[Slats]

Looking at Joel's drawing, the snorkel height is not needed. You are limited to the float movement and that will only happen if the sail breaks the surface. You would be safer putting the snorkel in the sail itself (preventing target damage or getting snagged). That being said combining your thoughts John on using a servo, i see the height being a benefit. If a verticle pushrod is mounted in the wtc and a Klik-on is used (to make the wtc removable) for a connector between the wtc and the snorkel float rod, you could use a servo to seal the snorkel. Add a safety float in the wtc just in case you forget to seal the snorkel. The magnet is plenty strong enough to hold the seal closed and you have positive motion to break the seal once you have it above the surface. Did I make any sense?

I like it Tom - many thanks.

The height in my view of having the snorkel above the sail is an issue for this class of boat with her sail planes positioned higher up the sail than any other class of US nuke. The boat should be a little positively buoyant in her setup, but should also in my view, allow these sail planes to bite the water so low speed dynamic forces can help her slip under. Almost any other US nuke model in 1/72, set up to be slightly positively buoyant, would be having these planes bite the water a good half inch lower and have more positive buoyancy to boot from larger (taller / wider / longer sails). All this means, is that float systems are problematic in this scale and class of boat for snorkel head valve activation. The lower I get the float to kick in - it is likely the better it will seal off due to mass of the float. The lower that the float kicks in, the greater that I'm asking the SD air to do its bit.

I also need to consider how I like to drive my subs. Slow and being a sneaky bugger at PD.

Right now I think given all options that you kind gents have offered up the way to go is either:-
1-servo activated pinch valve on the air line from the snorkel
2-servo activated snorkel head valve
(both of course would run the standard secondary float valve in the SD)
3- reverting to a snort system with small gas backup.

Thanks

John

[ManOwaR]

I'd love to go down there to drink beer and fish...I'm good at doing those things! So would the family. Something to plan for the next year or so.

Joel

[He Who Shall Not Be Named]

Thought I would breath some life into this important thread by showing off today's work on one of Joel's beautiful 1/72 PERMIT kits. Also, spurred on by a phone conversation with Mike Caswell earlier this evening -- he was *****ing and moaning about the problem he was having attaching the horizontal stabilizers on his 1/72 KILO kit. I told him to do it pretty much the way I did the PERMIT's, illustrated below:



The idea is to use a long length of rod of the same diameter as the stern plane operating shafts. This is inserted through the two stern plane operating shaft holes in the hull, the rod serving as the reference plane that works to hold the horizontal stabilizers (once secured to their respective stern planes) in correct position against the stern of the hull. Once in position against the hull, the two horizontal stabilizers are CA'ed to the hull. The long reference rod is pulled out; the planes equipped with their respective operating shafts; and the inboard of each shaft slide into the stern plane operating yoke and made fast with a set-screw. Each plane is made fast to its operating shaft with a set-screw set into the bottom face of the plane which engages a flat machined onto the operating shaft.



This model will use an identical 3.5 SAS SD as the one currently employed by my 1/72 SKIPJACK.

M

[He Who Shall Not Be Named]

Thought I would breath some life into this important thread by showing off today's work on one of Joel's beautiful 1/72 PERMIT kits. Also, spurred on by a phone conversation with Mike Caswell earlier this evening -- he was *****ing and moaning about the problem he was having attaching the horizontal stabilizers on his 1/72 KILO kit. I told him to do it pretty much the way I did the PERMIT's, illustrated below:



The idea is to use a long length of rod of the same diameter as the stern plane operating shafts. This is inserted through the two stern plane operating shaft holes in the hull, the rod serving as the reference plane that works to hold the horizontal stabilizers (once secured to their respective stern planes) in correct position against the stern of the hull. Once in position against the hull, the two horizontal stabilizers are CA'ed to the hull. The long reference rod is pulled out; the planes equipped with their respective operating shafts; and the inboard of each shaft slide into the stern plane operating yoke and made fast with a set-screw. Each plane is made fast to its operating shaft with a set-screw set into the bottom face of the plane which engages a flat machined onto the operating shaft.



This model will use an identical 3.5 SAS SD as the one currently employed by my 1/72 SKIPJACK.

M

[Slats]

Not bad David. I've seen better - aka mine. :)
If you manage David to get a snorkel head float valve crammed into the Permit's sail I'd love to see it.

Now finish that bloody GRP Albacore and take my money already! It must a closer than a ducks nuts away now. I'm sick of the sight of the plastic one.

Plunger is assembled, painted and weathered. SD is installed too.
Need time to upload photos and narrative.

I hope to start ballasting the boat out this weekend.

J

[He Who Shall Not Be Named]

In time, in time -- got to get some other work out of the way first.

Yeah, let's see your PERMIT, pal. You do fair work yourself.

M

[crazygary]

Like the set screw trick there, brother M!
You numbah wun slicky-boy!! Hah!!
CG

[He Who Shall Not Be Named]

Like the set screw trick there, brother M!
You numbah wun slicky-boy!! Hah!!
CG

I are Torpedoman!

M

[crazygary]

Geez!! Nice grammer, M!!

Shouldn't that read, " I BE torpedoman"?? (LOL)

crazygary ( Ya think?? WooHooo!!)

[He Who Shall Not Be Named]

... a placard over one of the classrooms at the Torpedoman A-school (the old annex of the Key West Naval Base) read: "I may not be able to spell it, but I can lift it!"

Simpler times. I loved 'em!

M

[Slats]

A bit of a photo update.
SD assembled - boat assembled and painted and lightly weathered - further weathering after ballasting this weekend.

J

[He Who Shall Not Be Named]

Love the equipment tray, John. Neat!

M

[HvyCGN9]

the hull scribing details look excellent!! Sweeet.....

Cheers Bruce