Hello. New to this forum… It is addictive. I’m impressed with the wealth of information. Anyone know what model Hansen this board is. It has a double concave through the tail. It is real heavy, I’d guess about 25-30 lbs. 16 1/2" nose, 15 1/2" tail, about 22.5 wide. There isn’t any markings on the stringer or the Hansen decal. I made her water tight, and wanna ride her soon…
Thanks!
Jook
hi Jook !
Can’t help you with the model , I’m sorry , but can I see a closeup of the decal , please ?
A mate of mine had a nice old hansen 9’er. He stripped it and reshaped it . I nearly died when I found out.
ben
Hello Jook- That looks like your standard issue mid-60’s stock Hansen. Hate to tell you this but those concaves are not a design feature. Tha is foam shrinkage caused by years of sun exposure. So I would just wax it up and surf it. Who knows, maybe the concaves will improve the performance.
Hi Jook,
You may find that the double concave is unintentional; foam of that era sometimes shrunk under the effects of age, heat and sunlight. And that kinda looks like what happened.
I notice that the bottom is considerably more ‘suntanned’ than the deck and that the ‘double concave’ seems to go all along the bottom. While Hansens of that era (mid’60s, from the shape of the rails towards the tail ) tended to be flat or slightly convex on the bottom.
Sorry about that. There’s not a whole lot that can be done to fix it. On the other hand, who knows, may be an improvement. Similar ‘concave’ boards ( granted, mostly popouts) seem to work okay, at least as well as others of the same model with no ‘concaves’.
hope that’s of use
doc…
ps- note to surfersensei: great minds, etc…
Speed bead, evolution of the finished shape, designed to help you hold into the wave better and higher as your board gets older and older…
Jook,
I shaped for Hansen Surfboards from 1965 thru 1969. Your board appears to date from the '63/'64 era. Looks like a glass tailblock, but the fin size, and fin placement is wrong for the period. Most likely a later replacement. Comments about foam shrinkage are correct. Production numbers were usually on the deck side stringer, right ahead of the tailblock. If you find a number, it will probably be four digits followed by an alphebetic letter that designated the shaper. In my case the letter T, the letter B, was Duane Brown, the letter C, Bill Clark, a dot on each side of the number was Fred Smole, a ~ symbol on each side of the number was Richard Templin. If there is no letter present, and a low number, it may be a board shaped by either Don Hansen, or John Price (pre Surfboards Hawaii). Hope this helps.
Thank you for all the replies. The fin is a replacement. Someone has glassed in a blue 9 inch fin. I did not know about foam shrink. It is remarkably symmetrical starting at the midpoint of the board then continues through the tail… I took it out,hours ago in some one foot mush. It was hard to get a good read on how it will ride b/c of the small waves. It sure has some glide through flat sections. Not as bouyant as I would have guessed, but easier to turn. Well if anyone wants to shape a double concave into their longboard I recomend abusing it by leaving it out in the sun for 30 years… It loosens up the tail!! 
Jook,
I hate to burst a bubble for you, but the looseness you feel in the tail is NOT a result of the “double concaves”. It is because of the short base length of the fin, and its very far forward placement relative to the tailblock. Without the water flow of a larger wave acting on the fin, it can sometimes feel as if there is almost no fin. The small mush will not tell you much about the board, or how it will really perform.
Hello Bill- You don’t know how happy I am that you posted that info on Hansen identification!
I have a 9’6"Hansen Superlight (it’s my baby) and I have wondered for years how to get some history on it. The s/n is 15425 with the dots on either side which would mean that Fred Smole was the shaper. I was guessing that it was shaped probably in '67 since it has a full longboard, pre-revolution template. I still take it out and surf it from time to time, it rides like a dream. It is cool to get that connection btween my board and the swaylocks crew. Any more history on it would be greatly appreciated.Thanks.
P.S. Hey doc, It’s kind of scary that so many great minds are running around unsupervised LOL!