Edd, I agree with Jim 100%. I've seen the R.A.J.'s boats at the shows, and they are far superior to the other teams. They are engineering master pieces, and always kept in pristine condition. I know you have worked hand in hand with Tom Miller over the years, and between the both of you have come up with some interesting ideas in the ski show world. Keep up the great!!!! work..... Bob
Thanks Jim & Bob I am fortunate the club gives me the opportunity to try new things. Sometimes we forget that these boats were originally designed for only (1) outboard maybe 200hp. Now we're putting (3 outboards-900hp) it's kind of insain when you think about it. It's like trying to stuff 10lbs. of s#!t in a 5lb bag.
Building a high quality product means that stuff does not have to be added on to make it work. Simple and uncomplicated is the best way to build products. Hanging a bunch of heavy metal onto fiberglass surfaces isn't the way an engineer or designer would design a new boat. Ask a professional mechanical engineer, Dyna-Ski did. The new style Dyna-Ski is designed to handle three big motors and they can be mounted on the transom. The hull was lengthened 9" near the back to give the boat about 5% more hull area. Do the math as we did. This translates into a hull that floats higher which is simple physics. The sides are taller so the driver stays drier as I don't like to get wet driving a boat. The throttle is mounted on an adjustable (up/down and back & forth) pod. There are two widths of control pods, one for twins and one for triples. The driver and passenger(s) are 18" further forward than in the old style boats. This reduces the need for weight in the front of the boat and the driver can see better too. Badgerlands, Must Skis and Hartwick Dyna-Ski boats are very clean triple motored installations. The big motors fit tight no doubt. The cost and weight savings are substantial from not having to buy heavy transom lifters and the assorted hardware. Check the Badgerland, Must Skis and Harwick boats for cracks. You won't find any! On the old style boats you won't have to look far to find cracks. The old design was never built for anything more than twin 150's. When Hydrodyne first came out with the boat it was called a 19' boat in the AWSA Water Ski Magazine Boat testing. Like the old narrow 18' there is a place for the old 20' style somewhere. Repair shops do love them too . . . . . . .
It is one thing to promote your product. It is something else when you critical and doggin' someone elses. Simply, low class! Greg
Greg is right, I have a boat that is approaching 40 years old and yes I do have some cracking around the top of the transom. Then again I have had 2 engines hanging on the back for that same amount of time. As we move away from balsa cores and wood transoms to composites we are bound to get a better product. Just remember that the site is dedicated to all forms of Crosby and Hydrodyne boats. Even the ones that have cracks on them. Daniel
maybe i am wrong but isnt the dyne ski hull a 17.6 footed that has been cut apart, widened and streched. thus is not a hydrodyne. this makes it a hybird. I agree with the two previous posts. This forum is for all classes of dyne boats. I love toms and abs boats. always have and it is all i will ever buy. even when they stop production. I hope someone that cares for the original old style boat will buy the molds and keep this boat alive when the time comes.
Hey, I have a well preserved '78 18' that has a couple of cracks on the top of the transom. I cannot notice any transom flex when the boat is doing a holeshot with someone else driving so it sounds and looks solid to me. Tim
The 17.6 XB Hydrodyne was produced by Hydrodyne (Three Rivers Industry) starting in 1986 thru 1991. The hull mold used to produce the 17.6 Open Bow Hull is the original hull mold that I bought from Hydrodyne a long time ago. I also have the original 17.6 XB Deck mold in storage. The 17.6 XB I/O's were produced from the same two molds with an engine cover mold or insert for the deck mold. I don't have this plug or insert. The mold that was used to produce the new style Dyna-Ski 20' Hull was made from the original 20' Hydrodyne I/O mold. This mold was only used a couple of times so it was in very good shape but old and short 9" of 20' 1" which is how long a 20' boat really needs to be to get an unlimited horsepower rating from the Coast Guard. The 18' model was removed from service by Hydrodyne when the Coast Guard established the formula for horsepower determination and placed motor size restrictions on all boats being manufactured. The formula is: Length in feet times the width in feet times 2 minus 90 = horsepower which can be rounded up to the nearest 10's number. So let's do a simple math for the 17.6 Models. 17.6' (length) times 7' (width) = 123.2 times 2 = 246.4 - 90 = 156.4 which rounds up to 160 hp. Run the numbers for the 18' that is 6' wide to figure what the Coast Guard determined is the safe power rating for it (130 is the answer). Every old style Hydrodyne 20' outboard (actually 19' 4") hull was produced from the same outboard hull mold. It is a very old and well used mold. Well used molds produce parts with rounded edges and poor fit as they wear. Facts often get overlooked by self proclaimed "experts" on many forums. Some of us like to stick with the facts although some folks have a problem with the facts . . . . . . .
The facts are that is is commonplace call a boat a 20+ footer with a hull center-line length of less than 20 ft. The total length is used. A prime example is the Allison line of boats. Both bass boats and speed boats. Check them out. They are extremely high performance boats. There are other examples as well. The Coast Guard was not born yesterday. jim
