Hi, Try these for simple seats. http://www.dutchbikes.nl/uk.htm http://www.zephyr.nl On 12/02/2008, Ken Pendergrass <kenp794@xxxxxxx> wrote: > > Hi Nico, > Some just put a wedge of foam under the seat pad for lumbar. Then it can > be moved enlarged or reduced until the right size and location is found. > Atom Bikes sells plans for making a nice wooden seat, plywood ala Zox, in > Pdf format for about $5. www.geocities.com/atombikes/index.html There > is also a Dutch company selling wooden seats same thing and both are nice. > Someone remind of their name,please. I guess the thing to do is to have a > loved one trace your back as you lay on your side in the recumbent position > to make the ultimate custom seat. > Ken > Depot Town > Ypsilanti, MI USA > > > On Feb 12, 2008, at 7:07 AM, Super Nabot wrote: > > Thanks George, > > Ok for the legs-torso angle, it's a good starting point. > > So, there are 2 solutions : tube frame (iron, or alu, i'll see) or fiber > shell + foam. Anyway, I would prefer to build the seat by myself. I think i > can form a fiber shell , or weld a tube chassis, no big issue for that. But > finding a suitable shape in order to make the seat seems not very easy. > > It would be wonderful if someone had a commercial seat, just to trace the > global shape. > > Otherwise, I reached to find a seat how-to, > here<http://www.ihpva.org/com/PracticalInnovations/seat_fabrication.htm>, > but without support for the lumbar area. > I will try to adjust the shape, but what should be the dimensions for the > lumbar support bend ? > > Regards, > Nico (France, Nord) > > >