RE: JAS-39 Gripen Owners/Build Thread
growingupisoptional,
The saddle tanks shown in Jeff's photos are for his smoke system. They are Sullivan ducted fan tanks [link=http://www.sullivanproducts.com/Fueltanks1Content.htm]http://www.sullivanproducts.com/Fueltanks1Content.htm[/link] and are 11oz each. I'm also using them for smoke. Joeflyer has one mounted under the duct (and between the gear cutouts) as an additional fuel tank.
As for the routing of the fuel lines... forward tank goes to a T fitting which connected to the two large saddle tanks on each side of the inlets, which in turn are T'd together and feed the custom tank I made which fits under the inlet duct (like Joeflyer except mine is about 28oz), this tank then feeds the UAT, which is connected to the fuel pump, shut off valve, filter, solenoids, and finally the turbine.
Diagram of fuel system added in edit 9/13/08.