Originally Posted by
cuyd
I still need to find out what to use to cover frame holes, including bottom bracket so acid/anything I'll pour in won't drain out. Was wondering about covering the hole between BB and seatpost with plastic wrap and sticking spare inner tube inside, then pumping it to high pressure so it would hold plastic there.
....cut two small squares of plywood, staple pieces cut from old 1 1/2-2" inner tunes to them on one side. Find a piece of allthread or a very long bolt, drill holes in the plywood and cut small entry holes in the rubber gasketing you stapled to it. Use nuts and fender washers (with rubber washers cut from the same old inner tube) to clamp the rubber gasketed plywood over the BB shell holes. Works fine.