Hi all, nice to be here on swaylocks. I’ve recently been trying to figure out the rocker set up for the Ci Biscuit. I am cutting the foam myself via hot wires etc. and i borrow rocker templates from US Blanks or whereever else i find a useable form. i seems to me tha there are no blank dimensions availble that can (U.S. Blanks etc) that the biscit can be shaped from, due to the low tail rocker that it carries. I could be completley wroing abou this. it seems to me that all of even the fish blanks carry too much tail rocker> So what I have done is simply taken a 6’2" fish rocker from US Blanks and decreased the tail rocker by each increment of growth (ideally keeping the rocker in good perspective). As far as the nose rocker goes i took a longer blank fish dimension, 6’8" and cropped the nose to end up with a 3.5 inch nose rocker. It happens that the 6’2" and the 6’8" hav ehe same 24’ and 18" measurements off the nose,to the center so why not?
does any one know the nose and tail rocker of the biscuit?. All I need are the final end mesurements. nose and tail.
My real question about the biscuit: is the tail rocker reallyu as low as it seems or is it just flattened out towards the tail? I have only seen pictures. I wish i had one in my hand right now because a buddy of mine really wants one and I told him I’d take a crack at it> Dang I figue I can shape something either similar or something that will be completelyh differnt. He’s cool knowing that he can buy one but loves the idea of a local shaping it for him.
Any help on this matter will be treasured. thanks to all!
Haven’t tried to to copy a Biscuit, but have owned & surfed one.
there’re two threads close to the top right now on measuring rocker and
you probably want a Simmons type of blank. If you can find Arctic foam they have an “MF” blank model that will probably be what you want, you just have to figure out the right length.
To get the best result you’ll definitely want to pay attention to both rail and stringer rocker. You’ll probably get a surfable result without that, just using an MF blank and looking at nose and tail rocker, but for a really good result you’ll want to copy the rocker of a successful board closely. If you get the foil/planshape/rocker balance rock you might still end up with a good board, but chances are it will have some funky, idiosyncratic qualities.
Until you get the understanding of what rocker design is, just do “Cookbook Shaping”. That is to measure the rocker against a straightedge set on the stringer, at every six inches. You won’t need to worry about what is really happening, and the job gets done. That means you need to get your hands on one to copy it.
I templated a 6’10 bisquit, and it had 3.75N and 1.75T. I know that isn’t the size you want, but perhaps it can give you a proportional idea for starting point? I haven’t gotten around to shaping it yet, but looks like very flat tail rocker. Also, I measure rocker the same way Barry does in his photo on the rocker thread.
Thanks for all the input. I’ll be looking into it some more. I am living in landlocked part of nc. if i can get off work thurs and fri and make it to Nags Head i just might be able to get my hands on one. potentially nice swell landing there.
i really am surprised of the nose and tail measurements you’ve given, dcasey. not alot of rocker goin on there. i wouldn’t have guessed that.
I totally dig the advice on exactness when it comes to measuring rocker progression, with that and bottom contouring you get a lot a compound curves going on. room for both error or a sweet sweet ride. I have used the straight edge level method to good results. Again there are no biscuits in my cubbard.
I am meetiong up woith buddy in a day or so to discuss the issues i am having. I don’t think he’s hell bent on a biscuit and i don’t feel like guessing.
Thanks all. i will be checking in to see If i can acquire any further advice. seriously thanks!
yo, thanks for pulling out some numbers. But it’s a a 6’10"? Do you know if board rockers generally progress in size according to lenght with some kind of common denominator to figure with? It seems like they would to me. but not sure.
You can proportion the rocker to the length of the board. Just calc the ratio of the two boards and adjust the rocker using that ratio. However for width it is not a direct proportion. Instead use 1/8 inch of width for every 1 inch of length. HTH.
I do it as GregTate said above. For instance, a 6’8 is 2% shorter than a 6’10 so I decrease the rocker by that amount. I have had good luck with this method, but I make sure I compare boards of similar size and shape. The bisquit is a thick, wide, flat mush-killer board, so keep that in mind if you want to make it. I was interested in it, and then I got distracted by the Rusty Dwart.
6’ 10" is huge for a Biscuit. Most guys under 220 are going to want 6’ 4" max.
My own finding with the 6’ 0" Biscuit I had was that it was capable of getting into a lot of different wave sizes well, and very early, but that I had to paddle it really hard to get in at around 210 lbs. I developed rotator cuff issues surfing that board, sold it. Bigger than 6’ 0" at 210 would have been a challenge to turn well. I also had a guy slightly lighter than me who surfs well warn me against going bigger than 5’ 10" for that same reason.
graci