Bottom Stringer Model IV

[Northof49]

I am now preparing for fabric, but have question re: the bottom stringer.

When I purchased my Model IV, the lower stringer was already installed. However, it runs from the tail and divides under the lift strut attach point, running all the way forward to the heat shield, on both sides. I am wondering if this is actually correct.

As it stands, the fabric will not lay flat on the bottom fuselage tubes, and where it passes between the fuselage and the landing gear, it will bind the fabric (wear it).

Should the lower stringer actually terminate at the lift strut attach cross tube?

Thanks,
Mike

[TJay]

Its probably not right but I continued mine further forward on my model 1 also, My thought is flat areas create drag,

[t j]

The belly stringer should terminate at the trailing edge of the lift strut carry through tube. It is epoxied to the tube just like yours is. I would taper the bottom of the end back a couple inches so the fabric will transition to the flat underside of the cabin floor.

I have no idea what the idea was to install that stringer V forward of the lift strut carry through tube.

[Northof49]

Thanks Tom
I will terminate my stringer at the cross tube .
The only advantage I could see with the stringer
Going that far FWD .it would cut down on the
Amount of reinforcement tape ,required for the
Bottom of the FWD fuselage.

[LSaupe]

Mine also terminated at the lift strut tube.