1969 hydrodyne construction build/rebuild floor info

I need to know the difference in the way the floors are rebuilt in a 1969 with balsa compaired to a raised floor

 

I'm assuming you are inquiring about a 1969 tournament skier without a raised floor?

The 70's tournament skiers also had a balsa core lay-up in the hull construction for strength (and weight reduction as structural foam was not invented). After the balsa core was glassed in, stringers were placed and glassed over. The raised floor essentially rests on the stringers. One of the members (inharmonydean) used to have a 69 but the core and transom took on water. The early dynes without the raised floor had their seats fastened into the core and thus, a pathway was created for water intrusion and rot. The stringers of the later boats can also turn to $#!t with hardware screwed into them but the core is usually spared. Floatation was also added beneath the raised floor and can also be a sponge for moisture and promote stringer rot. Hope this helps.

Cheers,

Kevin-

 

So I have a bulsa style floor can they still be split from the core to rebuild I have not seen eany info on the 1970 and older dyne thanks

 

Please see the attached jpg. If you have to re-core the hull, it can be done but it's going to take a lot of work. A lot of these balsa core hulls were laid to rest at the landfill after they took on water.

Kevin-

 

the only soft area in the floor is the raised section for the battrie and gas tank in the rear this area must have been built after the floor what would be the best way to check the rest of the boat floor

 

is the hull the same thickness in the older boats