Abstract: A go cart racing frame comprises a chassis having a right front portion, a left portion, a right rear portion and a left rear portion and having left and right sides, an independent seat frame for supporting a seat rigidly connected to the chassis at a plurality of weight-bearing points, and a seat frame restricter for restricting downward movement of the seat frame with respect to the chassis. The weight-bearing points concentrate the weight of the driver positioned in the seat at the left front portion and right rear portion of the chassis. The seat frame restricter forms an additional weight-bearing point when downward force is applied to the seat frame for helping to support the weight of the driver and distributing it to the left rear portion of the chassis. However, the restricter allows upward movement of the independent seat frame.

Abstract: A centerless valve regrinder for resurfacing a worn valve having a face, a tulip connected to the face, a valve stem connected to the tulip, the stem having an axis, a first notch worn into the stem at a location spaced from the tulip, and a second notch worn into the stem at a second location spaced from a distal end of the stem. The regrinder is comprised of a power-driven means for resurfacing said valve face, and a chuck for supporting the valve stem in such an orientation as to cause contact between the valve face and the means for resurfacing at the angle of bevel of the valve face. The chuck is also comprised of a wheel for rotating the stem about its axis and simultaneously drawing the valve face into contact with the means for resurfacing. The chuck is further comprised of two fixed supports that are in parallel orientation and of sufficient length to cradle and support the stem from respective points adjacent the tulip to respective points past the first notch, and preferably past the second notch.

Abstract: A centerless valve regrinder for resurfacing a worn valve having a face, a tulip connected to the face, a valve stem connected to the tulip, the stem having an axis, a first notch worn into the stem at a location spaced from the tulip, and a second notch worn into the stem at a second location spaced from a distal end of the stem. The regrinder is comprised of a power-driven means for resurfacing said valve face, and a chuck for supporting the valve stem in such an orientation as to cause contact between the valve face and the means for resurfacing at the angle of bevel of the valve face. The chuck is also comprised of a wheel for rotating the stem about its axis and simultaneously drawing the valve face into contact with the means for resurfacing. The chuck is further comprised of two fixed supports that are in parallel orientation and of sufficient length to cradle and support the stem from respective points adjacent the tulip to respective points past the first notch, and preferably past the second notch.