Post by David Lawson on Nov 23, 2014 3:17:08 GMT -5
This will be very interesting to follow.
I know it is extremely early days and you look like you will completely re-work the shell anyway but I notice you have filled the duct just in front of the cockpit. This was in place during the early part of the season.
Thanks for the reminder David. That NACA duct will be relocated further aft, closer to the cockpit. The position of the duct on the Classic shell was forward of the axle center-line. To match the drawing that I'm using for reference, I'll cut a new duct that will be roughly centered over the front axle.
The nose opening will be reworked into a flatter, wider shape as depicted by the paper patterns. A new leading edge will be added to the opening. The black piece is tough engineering nylon.
The original fiberglass nose leading edge piece cut off. The nylon piece will be attached and shaped.
The internal channel on the tires is a bit wider than the center rib on the aluminum wheel, resulting in excessive side to side play. These nylon rings were glued onto the rims to fill the gaps. After grinding them down to size, all the adhesive was ground away as well, so now they simply slide loosely onto the rim
Mock up to check proportions
These little aero devices are steel pieces inserted through slits cut into the shell
The body has been reduced in size to match the drawing. It now fits snugly around an FF motor. The original fiberglass motor detail is now too large in relation to the rest of the car, so I'll make new engine detail.
This brass piece was going to be one of the front suspension uprights. It had an internal flaw in the brass that was exposed while sawing out the rough shape.
Chris, Yes, those air pockets are vexing. I missed a few that were only revealed when I was smoothing the surface in preparation for a coat of primer. My fault - I never used a fiberglass shell before. Now I know that the first step, as recommended by David Lawson, will be to inspect the shell for air pockets.
Thanks Nigel, the wheels are C.B. Design. Tires are Paul Gage. Inserts are turned-down wheels off a Scalextric McLaren MP4-16. They aren't exact but the closest approximation I could find. In period photos I've seen at least two designs of wheel used on the P133. One type has an appearance similar to the 5 spoke Campagnolo design on the Ferrari 312. Another type is the 12 spoke design I'm using here.