[FC] Not one, not two, but THREE rim sizes for FCs!!!!

[James Davis]

First all rims are measured in width at the tire bead.  From the 61 Shop 
manual page #12-3:
Wheels
Type --------------------------------Short spoke, disk
Attachment to hub ----------------5 studs, 7/16-20
Offset-------------------------------0.560 in
Rim size ----------------------------14 x 5j mod.

Offset is positive  thus the back space is 2.5 (half of the width) plus the 
offset or 3.06 inches.
The rims are quite unique looking as the depression in the rim is toward 
the back edge.  This is why the tire must be mounted and removed from the 
back side of the rims.  Need a picture?
Jim Davis



At 12:16 AM 1/29/2005, you wrote:
>Hi all!
>
>Actually, maybe only one correct size for FCs, but since all these rims came
>from FCs, it may be reasonable to assume that there are actually three (or
>more?) rim sizes. A true FC rim can be distinguished from a regular Chevy rim
>quite easily.... the regular Chevy rims have a ridge where a full size hupcap
>would fit and FC rims do not.
>
>This is what I have found:
>
>Rim A    7 inches outside to outside, 3 3/4 inch backset, 2 5/8 inch frontset
>
>Rim B    6 3/8 inch outside to outside, 3 3/4 inch backset, 2 1/8 inch
>frontset
>
>Rim C    5 15/16 inch outside to outside, 3 1/2 inch backset, 1 15/16 inch
>frontset
>
>*outside to outside in the measure from the outside edges of the rim
>*backset is the measure from the outside of the back of the rim to the
>mounting surface
>*frontset is the measure from the outside of the front of the rim to the lip
>on the centre hole
>
>And which one is the right one?
>
>
>
>
>
>Rim C is the size of the rim that came with the spare tire in my 62
>Greenbrier, so I am taking that one as the correct one.
>
>Any theories about the other sizes?
>-Camper versions?
>-Industrial versions?
>-??????????????????????
>
>Just another ho hum day in paradise!
>toodles
>Merv Krull