SailNet Community banner
1 - 2 of 2 Posts

· Registered
Joined
·
515 Posts
Reaction score
10
Think the best option is to place the lead as low as possible to take advantage of the leverage. 100lbs three feet away from the center of rotation will have the same effect as 300lbs one foot away. So going through the side of the keel and boring a few holes into the concrete would allow you to get the weight where you need it with the least overall effort. That way you could also chip out as much concrete as possible, then replace it with lead in resin where you can't get nice clean easily cast and filled forms cut.

Most effective would be to leave steel, and only replace concrete, steel is nearly 500lbs per cubic foot, while concrete is about 150 per. Lead is around 700lbs. So if you replace concrete you're gaining 550lbs for each cubic foot, but only 200 with the steel.

The absolute best way would be to chip out the crete and steel, then replace with lead. Concrete chips out pretty easily if you first make a hole. The bigger Bosch hammer drills have a hammer only setting that will eat concrete in no time.


Only ballast info I found on the Cape george is for the 34 which says there are three 3000 pound pigs bedded in lead shot and resin.

Find out where the lead is, then concentrate on replacing as much of the rest as you can. Most stud finders work by detecting density differences, so you should be able to mark out where the existing lead is, a magnet suspended from a string will show where steel is when it's close enough to the surface (works to about 2" depending on magnet the longer the string, the more sensitive it is) exploratory drilling will show where the concrete starts if everything else fails.

Ken.
 

· Registered
Joined
·
515 Posts
Reaction score
10
A quick and dirty way to get rid of concrete is to pick up some phosphoric acid, (greenhouse supply in most areas) pour that on the concrete and it will start to bubble and turn the concrete into water and sand. Afterwards removal can be done with a wet vac.

Ken.
 
1 - 2 of 2 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Top