Alternative Flotation (Ping Pong Balls, etc) garage test

Dear Group.

My 1.5 cents' worth on the topic. Floating in a bucket of water in my gargage
for the past 48 hours is a 6" x 6" x 2" block of "Insulfoam" from Home Depot.
It hasn't absorbed any water. I used this in both ends of PS #1. HD charges
$12.88 for a 4'x8'x2" sheet. Thats 5.3 cu ft @ $2.43/cu ft. Took a little
less than one sheet to pack the 2 underseat areas on PS #1. Sure a lot cheaper
than any mix and pour goo. Probably not nearly as much fun as 500 ping pong
balls.

Anyway....primed the inside of PS #1 last night. Will final coat (2) the interior
tonight and Saturday. Can't wait to begin the final prep on the hull on Sunday.
Looks like I may make the 10/1 revised launch date. Told son #2 to get his
electric motor.

Jim
The Olde New England Boat Works (I wish)
Antelope, CA

>
>Sort of confused re possible offensive content. I saw none that I
>remember. I just didn't recognize "APS". Wouldn't they be better off
>if they tried to talk it out first?
>
>I think people often use airbags to lift things off the bottom, or
>you
>could pump air into flooded compartments. A compartment that was not
>vented might burst if depth change sufficient, tho.
>
>When diving with a dry suit or bouyancy compensator, you have to put
>some air in when you get deep, and when you come up you have to vent
>some of the air or your rate of ascent will get out of control when
>the air expands. Sort of OT, I guess, unless Bolger did a submarine
>(didn't he?).
>--- Inbolger@egroups.com, wmrpage@a... wrote:
>> In a message dated 9/20/00 6:21:06 PM Central Daylight Time,
>> lincolnr@m... writes:
>>
>> << Nothing particularly surprising about this. >>
>>
>> Yes, a given volume of air will expand, if permitted to do so by an
>elastic
>> or open-bottomed envelop (not the case in ping-pong balls, I
>think),
>and its
>> lifting capacity will increase as its volume expands, but the
>weight
>and the
>> displacement of the ship or other object to be lifted will remain
>unchanged
>> (I think).
>>
>> APS is the American Physical Society, or something like that. Bob
>Park has a
>> web-site devoted to debunking "junk science" which is highly
>entertaining. He
>> is evidently a member of APS, but his site contains the disclaimer:
>"not an
>> official position of the APS, but it should be." or words to the
>equivalent.
>>
>> I apologize if I offended anyone.
>>
>> Bill in MN
>
>
>Bolger rules!!!
>- no cursing
>- stay on topic
>- use punctuation
>- add your comments at the TOP and SIGN your posts
>- add some content: send "thanks!" and "ditto!" posts off-list.
>
>