While I’m stocking up on balsa and ply for the winter, I wasn’t quite sure of what & how much of each to get. How much means to build a Footy hull. The whole point is to get an idea of the which thicknesses work for which applications (like twisted panels, or flat, structural panels) and how much to buy so you don’t necessarily run short.
I would recommend having one or two sheets of 1/8" and 1/4" balsa on-hand for miscellaneous things like bulkheads, servo & radio mounting, etc.
1/8" balsa for bulkheads, deck
– 6x36 inch sheet
1/16" balsa for fairly flat side panels, top or bottoms
– 6x36 inch sheets, and is good for 1 Footy, with some to spare.
1/32" balsa for twity panels, or ultralight builds
– 6x36 sheet, should be good for 1 footy, with spare
what about plywood? stick with 1/32" (stronger) or 1/64" (twistier) ? Is a 12x48" sheet good for a few Footies?
My LHS (Hobbytown USA) can get it (1/32 or 1/64) for me, but I’ll have to order a bunch, or the first sheet would cost $115! with 5 sheets free Seems like a lot of $$$ to get started on a Footy, which is supposed to be “inexpensive” unless you get some friends in on the order.
BalsaUSA is about the same cost…
Hence, why I’m inquiring what sizes & quantities you’ll want on hand for building Footy(ies.)
I’m going to order some 6mm carbon tubes for rigs.
How many and what lengths would be good to buy? I think the kite supply places have 6mm in 32 inch (80cm) lengths. If you assume a mast is about 22 inches (56cm) then 4-6 lengths should keep you in rigs for a while.
6mm is ok…my tallest rig is 32" from the deck and its 5.3mm od 3.4mm id and its plenty stiff its the carbon fiber pultruded tube from Midwest products
I have 3mm on my boom/club and it is plenty stiff Probably stiff enough to do a free standing rig @24 inches when I get My microyacht I’m going 3-4 mm
be careful with the the 100lb test. I have 65# for my running rigging on all my boats and its is pretty stiff. in the light air on my footy my main and jib did not want to open up real easy. so I’m going to go get a spool of 10-15# for the running rigging on the footy and then try again in a couple weeks.
I use te heavy line because the pulleys like it. Thin line sometimes jumps off the sheave. The heavier line also negotiates the hole in the sailwinch arm and the fairlead nicely, and is good for tying knots.