Hermco Bracket Measurements for 1974 Tsunami

[Copper Collar]

Finally in a spot to order my bracket and went out to measure the boat today. Anyone know if these sound correct? I'm sure Don will know but it's a Sunday and I would bet he is closed.

Transom is 14 degrees or 3.5".



(A)Widest width is: 92"
(B)Width at bottom of freeboard is: 87.5"
(C)Freeboard is: 29.5"
(D)Top of transom to bottom of keel is: 49.5"
(E)Top of drain to keel is: 2.75"




Also the transom has a slight curve to it, correct? I put a 72" straight edge across the back and the middle was "high" by maybe a 1/2" but looked like an even curve as you moved out.

[CoreyTrx]

The transom on my Sceptre was 13 degrees. Is your transom new? The transom should be flat across. I've never seen a seacraft that bowed out. You might want to check the integrity of the transom if it hasn't been rebuilt before you put a bracket on there.

[Copper Collar]

As far as I know it is the original. The "bow" looked even and seemed to be right in the middle.


I'm having the entire transom re done (from the inside w/ coosa) to fill in the I/O holes and to add more layers inside since it is going from I/O to a bracket.


Edit:

I went back out and used the straight edge across the transom at 4 different heights, starting at the outdrives and moving up. I then went diagonal from the port top of the transom to the starboard trim tab and then from the starboard top to the port trim tab. Good news is that the 1/2" I said before is more like a 1/4" at most. There are actually two dips that match the twin outdrives, that get worse the closer you move to the gimbal where they are around a 1/4".