design question (brett)

question....right up your alley brett...

side panels...im just piddling with a scale model right now..

seems im coming up with a rocker in my bottom at the rear...cant have that for sure...  my memory is fuzzy...seems that we have discussed this before somewhere..do i need to concave my bottom edge to eliminate the rocker, or just strongback it??  i know on the fs 18 drawings the bottom edge is concave, but i thought that was because of the vee...

maybe im crazy...maybe its just the crappy material im working with??  lets discuss this...i know youve been playing with shapes and whatnot very thoroughly....

 

ok...i kept everything straight for my 8 footer...didnt get any rocker...but this one is gonna be 18 feet....so i figured maybe thats where it came from...
[smiley=1-mmm.gif] [smiley=1-mmm.gif] [smiley=1-mmm.gif]

 

huh??  just flat panels...when i build with ply, ill be using a frame near the front(deck support), one in the middle(tankseat like a jonboat) and a frame in the rear(deck support)...and 2 longitudinal stringers...and then a couple ribs/side supports to support the gunnels....

 

ha.. too late..i tore it apart...my pieces (cardboard cut with scissors) were a little off from eachother...  like i said, crappy material...i feel sure that once i start building ill work it out...im just bored and getting antsy..

just for some reason an old convo stuck out in my mind about concave....cant reember where i got that from...hell, may not have even been on here...

as you can tell, im not building to any plans or anything...i have a picture in my brain of what i want...im just gonna start building and with a little trial and error, we will see what i come up with...the only constants i have are some dimensions that i want... long(18), skinny(36 bottom, 48 beam), low sides(14 inches), as light as i can possibly achieve( i will be dragging this boat over dams), high transom for a 25 on a jack.....NO vee...all flat...pointed bow, or jonboat style...havent decided..

 

yeah, it would look similar to that if i do the pointed bow... a squareback pirogue on steroids...

im working on uploading an album of pics ive saved over the years that pertain to what im wanting to build...while, none of the skiffs in the album are what im building, each one has something that i like...

 

except without that rocker!! rocker is the devil!!

 

yes, bow rocker for sure...thats what its for...to slide over logs, dams...i was talking about the rocker in the rear...the skiff you posted could never plane with an outboard...

if youve ever seen an aluminum crawfish skiff (in louisiana there are thousands of them) they have a really pronounced "upswept" bow...thats the reason, to slide over stuff...and the steering wheels are all the way forward to be able to see better while navigating flooded woods...

 

and theres no such thing as "floating" cypress deadfall around here in these parts....if its floating, somebodys gonna grab it and bring it to the mill to sell, or bring it home...

but yes old cypress logs are stuck down on the bottoms of the swamps, lakes....they call these sinkers...there are some people around manchac louisiana that make a killer living going to find these sinkers and raise them up with cranes on barges, and big float bags and bring them to the mill....thats some of the most beautiful wood ive ever seen in my life...always been my dream to have a room in my house done in sinker cypress...its very very very expensive...

 

take a look thru here...they are in no particular order...like i said, none of them are what im building, but each one has some feature that i like or am considering trying...

http://s294.photobucket.com/albums/mm116/mikebro72/my%20marshskiff%20ideas/?start=all

 

page 4...side panel..theres a 1" to 1 1/4" to 1" concave....