There were some other Bell layups:
This what Charlie Wilson wrote on P net
Didn't we just go through this? Anyway:
Bell's Fiberlar was a three blanket E glass lamination with a gel coated exterior with an arimid partial bottom with a polyester core-mat center and some arimide stem pieces. Fiberlar was discontinued when ABS came on line, ~2000.
White / Gold had an e glass outer blanket under a gel coated exterior, an arimide bottom with a core mat center, an arimide blanket, an arimide diamond and another arimide inner blanket that, after the mid 90's was 25% black Kevlar 29 and 75% Kevlar 49, the Bell "tweed". I use the term arimide because Bell started purchasing European goods which must be Twaron, not Kevlar, in the early 2000s. Every other woof strand is black aramide #29.
Both Fiberlar and White/Gold hulls had a cor-mat bottom cookie, which stiffens the bottom but resists deformation when thwart length is fiddled.
Core mat cores always seemed to flatten the boats a little compared to Black/Gold, all fabric, construction.
Kev-Krystal, later Kev Lite, is a two layer "Tweed" hull with aramide quarters, foam core and sometimes ribs and tweed foam covers. Early versions had, usually, clear gel but could be special ordered in opaque shades. Later versions are skin coated.
The lack of a pre-form oven means flat bottom cores rebound a little when the vacuum is dropped, resulting in a slightly flat bottom. Aluminum rails tend to hog the boat as they are not pre-shaped and the lightweight laminate drops it's stems a little from the straightening effect of the rails along the sheerline.
Pre 94 Kel Lite and Kev Delux Hulls had a 30" longitudinal section of s glass immediately under the gel coat, this was dropped for cosmetic and weight reasons in 1994.
Black/Gold started with clear gel, which could be special ordered opaque and is now often skin coated. The lamination starts with a carbon blanket, carbon bottom and center diamond, all black, then a tweed blanket, a tweed bottom and diamond and another tweed inner blanket. Newer black/gold hulls may have foam cores. Almost all tandems and Magic have foam cores replacing several layers of fabric to reduce weight.
The above from my Word Perfect file "Bell Lamination Schedules" dated 1994, later converted to Word and last updated 1999.
