If I understand correctly, you’re making a simple 6 x 17 cm fixed-focus camera with a wide-angle lens. If so, I think you’re making a mistake in setting the focus to infinity. It’s more practical to set the focus to the hyperfocal distance at the most useful aperture.
You need to set the aperture and alter the shutter time to accommodate the exposure. This will vary depending on the film speed, light meter reading, and whatever filter is in use.
Here is a data sheet for the Schneider Super Angulon lenses dated 11/76. It lists slightly different flange distances for the 8/90 Super Angulon mounted in each of 4 different shutters (as well as in a barrel mount). The flange distance given for this lens in the Compur 0 shutter is given as 99.4 mm. Unfortunately, the flange distance for the 8/90 Super Angulon mounted in the Compur 00 shutter is not given.
https://www.pacificrimcamera.com/rl/02156/02156.pdf
After determining the fixed aperture at which you’ll use the lens, compute the hyperfocal distance using the online DOF program DOF Master.
https://www.dofmaster.com/dofjs.html
For example, suppose that you choose f/45 for maximum depth of field. That gives a hyperfocal distance of H = 1890 mm, or 1.89 meters. Then everything from H/2 = 945 mm, or 0.95 meters to infinity will be acceptably resolved using a circle of confusion diameter of 0.10 mm. Of course, you can recompute this with a smaller COC if you prefer a tighter standard.
You can perform calculations for the placement of the lens relative to the film plane. A simpler solution requires no arithmetic.
If you have, or can borrow, a view camera on which to temporarily mount the lens and shutter, it’s a simple matter to set a focusing target at the hyperfocal distance H, focus upon it, lock the focus, and measure the distance from the front to the lens board to the ground glass. This is the distance that must be duplicated on your 6 x 17 cm fixed focus camera to obtain the same focus with the same lens & shutter on your project camera.
A safe procedure to measure the distance from the front of the lens board to the front of the ground glass is to use a small diameter (say 8 mm) wooden dowel. Insert the dowel through the lens hole of a lens board mounted in the camera until the end lightly touches the ground glass. Mark the dowel where it passes through the front of the board with a sharp pencil.
If you use a small aperture, such as f/45 with a 90 mm lens, the depth of field is generous, so a small error in positioning the lens won’t be noticed in the resulting photo.
