Is it made from cast iron?
I've got some very nice carbide bike lamps which are made from brass and I don't think they are that heavy. Most carbide lamps have a parallelogram spring mounting to help with road shocks. Perhaps something similar might be good for your lamp.
I've got some very nice carbide bike lamps which are made from brass and I don't think they are that heavy. Most carbide lamps have a parallelogram spring mounting to help with road shocks. Perhaps something similar might be good for your lamp.