looking to buy hydrodyne 18 ft

That is what i think. MarkBano has a 72 I believe that is the later style. So 72 is the transition year.

That explains why your cores were soaked.

Ashley, why do you like the old style better?

jim

 

I just looked it up and Mark's is a 73.

 

I don't mean to hijack Christians thread but this important stuff.

Several questions arise:

When did the Dyne makers transition to end grain cores? I think it must have been maybe in mid-production 1972. My boat is before that.

What is up with the double core layer? When I tore mine down to the hull I found an obvious balsa core at the bottom. On top of that I found something else as a double core which was also laid grain longitudinally and also obviously original construction because the stringers were on top of it all.

When did the Dyne manufacturers put a Hull ID on the transom?

 

Here is the story of the HIN:​

http://www.hydrodyners.com/forum/index.php?threads/capacity-plates-and-hins.702/#post-5265​

I believe the end grain construction began at the same time. (I had to look this up, I had forgotten, sorry)​

Ab Crosby believed the double core was very strong. I believe they shot hand guns at it and it did not penetrate all the way. The end grain is modern construction for all balsa core boats as far as I am aware.​

Next you will want to now about capacity plates and that is a very interesting and convoluted story. It is all available with a search, but you sort of have to know where to look.​

jim​

​

 

Here are a couple of threads with posts from the man himself that are very interesting:

http://www.hydrodyners.com/forum/index.php?threads/new-pictures-and-what-is-to-come.289/


http://www.hydrodyners.com/forum/in...-ratings-and-the-18-dyne.294/page-2#post-2227

jim

 

I like the old style because you have more leg room. The raised floor takes up alot of vertical space in an already shallow boat.

 

The raised floor in mine ends at the front of the seats. Does that help your issue?

jim

 

My uncle has one like that, it has a piece of PVC running from the front to the back for water to drain.

 

It can run the other way too, and soak the carpet in the foot well. I have a rubber drain plug in mine.

jim