SMALL - Telemetry SMALL - Radio
Thread Tools
Old May 30, 2015, 10:17 PM
DanL is offline
Find More Posts by DanL
Registered User
DanL's Avatar
United States, MN, Brainerd
Joined Oct 2004
2,492 Posts
Quote:
Originally Posted by RevWarBrig View Post

Any estimates on the final ballast total needed?

Looking well over 100 lbs. to me.
Hey Jeff,
Rather than that much lead, what if you laid in a capped length of PVC pipe in the bottom of the hull, with ports to the open water. Set up to flood like the ballast tanks on a submarine. Not as dense as lead, and a lot of lead would still be used, but at least some significant amount of weight would be taken on when the hull is put in water, and that same amount drained out as she is removed from the water.
Perhaps valves could be used to flood the "ballast tank" to trim her to proper water line, then closed.
DanL is offline Find More Posts by DanL
Reply With Quote
Sign up now
to remove ads between posts
Old May 30, 2015, 11:41 PM
JerryTodd is offline
Find More Posts by JerryTodd
SCALE Sailor
JerryTodd's Avatar
United States, MD, Severna Park
Joined Apr 2008
1,828 Posts
I'll wager the kid won't fit anymore
JerryTodd is offline Find More Posts by JerryTodd
Last edited by JerryTodd; Yesterday at 12:51 AM.
Reply With Quote
Old May 31, 2015, 10:13 AM
DanL is offline
Find More Posts by DanL
Registered User
DanL's Avatar
United States, MN, Brainerd
Joined Oct 2004
2,492 Posts
Quote:
Originally Posted by JerryTodd View Post
I'm guessing Fair American with a LWL of about 64" beam of 24" and depth of about 12" would displace about 295 pounds of fresh water.
It may be more like this:

Hull "block" volume estimate: 64 x 24 x 12 = 18,432 cubic inches

Corrected hull volume estimate; 18,432 cu in x 0.55 = 10,138 cu in
(the 0.55 factor is from actual measurements and weights of Syren, representing
a ca. 1800 brig hull shape)

Hull Volume x Water Density: 10,138 cu in x 0.036 lbs/cu in = 365 lbs

Total model weight with needed additional ballast = 365 lbs

Estimated extra ballast needed will be 365 lbs minus the finished model weight.
DanL is offline Find More Posts by DanL
Last edited by DanL; May 31, 2015 at 10:32 AM.
Reply With Quote
Old May 31, 2015, 01:15 PM
JerryTodd is offline
Find More Posts by JerryTodd
SCALE Sailor
JerryTodd's Avatar
United States, MD, Severna Park
Joined Apr 2008
1,828 Posts
Guess I didn't remember correctly
JerryTodd is offline Find More Posts by JerryTodd
Reply With Quote


Thread Tools

Similar Threads
Category Thread Thread Starter Forum Replies Last Post
Build Log 1842 Brig-of-war US Somers meatbomber Scale Sailboats 207 Nov 09, 2011 01:52 AM
Build Log 1814 HEIC Packet Schooner Brig St.Helena 1/85 scale meatbomber Scale Sailboats 66 Jun 11, 2010 06:22 PM
Build Log Scratch 36gun Brig LordStrato Scale Sailboats 6 May 03, 2010 08:29 AM
Discussion Photos of brig conversion Brooks Scale Sailboats 21 Sep 26, 2009 09:14 PM