Despite the similarities, there are some differences that mean this drum is not a direct replacement.
The offset distance from the mounting face of the brake drum on the truck hub to the mounting face of the drive sprocket is 2 1/2", much more than that on the production set up. If this hub were used on an LP1/LP2, the drive sprocket would not be centred in the track, but would be meshed with the outer edge of the track.
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