What are the proper fasteners to attach the turtle deck to the deck of the 1915 roadster ?
Disclaimer: I suspect this of being a "put together" 1915, so I have my doubts about what's correct, but here's what's in mine.
Right front corner
Left front corner
I believe they also originally had a leather washer tacked to the hole.
The leather washer makes sense, what type of bolt? Flat head with square nut? It looks like 1/4-20
I use a 1/4' carage bolt from the bottom up, and grind off one side of the head so it will clear the main sill.charley
My unrestored '17 roadster has four carriage bolts (one near each corner) fastened with square nuts and washers on the underside of the body.
I had the trunk off years ago. I believe the bolts are 1/4" or possibly 3/16".
There were no leather spacers. My opinion is maybe the spacers were used starting in 1913 but were eventually dropped as being unnecessary and/or for a small cost savings. Russ Furstnow would probably know when the spacers were used.
Here's a thread regarding leather spacers.