I have a 1915 Touring and I want to replace the wood firewall. What type of wood was originally used? Also, was the color inside the cab and in the engine compartment different or stained/painted the same? I have access to a CNC router and would prefer to rout the firewall myself rather than buying a firewall from a parts house. Anyone know how I can obtain a pattern? Thanks
Somewhere on the forum there is a thread on 15 fire wall design. It changed in both style of wood and thickness. Hap should be able to give you a link to it. I found it a few days ago by a key word search but can't find it now.
I am fairly sure the firewalls are lumber core plywood. I think it is 3 ply. There is a thick center board and 2 outer veneers. Im not at the shop, so I can not look at an original. It could possibly be 5 ply (thick center board a 2 thin veneers each side). Ill look tomorrow. Lumber core is hard to find today. I have made it myself when needed.
My recollection is that Donnie is right. Thick center and 2 outer veneers.
David -- You can buy a drawing for the firewall you want from the Benson Research Center. They changed several times during the year, so you'll need to tell them what date to look for. John Regan (Fun Projects) makes very nice ones for sale, made from those drawings.