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Thread: Lead Weights
07-16-2008, 07:03 PM #11
07-16-2008, 07:08 PM #12
07-16-2008, 07:09 PM #13Senior Member
- Join Date
- Dec 2007
07-16-2008, 09:38 PM #14Senior Member
- Join Date
- Feb 2008
- North of Phila. PA
You are in for a treat drilling thru the lead. It tends to load up on the drill bit. I have had mediocre success drilling lead weights. For the dive weights I make I have 2 tapered pins in the mold at the location I want the holes. This saves me from drilling those. Several others have holes in odd locations and unfortunately those I have to drill. I want to try and coat the drill bit the next time with wax and see if that helps at all.
07-17-2008, 07:33 PM #15Senior Member
- Join Date
- Aug 2007
- Northern California
It's a good idea to weld up a casing of the size and shape that will fit in your car. The dimensions can be determined by the weight you need. I don't have my reference book with me but there is a certain weight per cubic inch of lead. That will tell you what size casing you need.
The suggestion by DSW up above to melt the lead into your form is a good one. Pouring lead can be extremely dangerous. It's heavy and unwleidly and you could spill it. If you melt in your form, there's no pouring required and you don't have to go back and forth with the molten lead.
I recently built a weight for my Harley sidecar that sits on the outer spring perch. There are four 7/16" bolts holding it down. The casing was welded up from 1/4" mild steel plate. The inside dimensions are roughly 3" X 4" by 12" long. With the weight of the lead and the casing and some calculations I came out at almost exactly 50 pounds, which was my target weight. Harley used to sell a sidecar weight that was made out of cast iron but they are no longer available.
Once the empty casing was welded, I set it outside on a board and leveled it. I filled it with my lead which was previously molded into 2" square bars. These I cut into 4" sticks. I used a Harbor Freight roofing torch that hooks to my BBQ propane tank. That baby really puts out the heat!
The lead was fairly clean and once it melted I had to add about three more sticks to fill to the top. It cooled to where I could handle it in about an hour and a half and later on, I drilled the four holes. As DSW says, drilling in lead is not easy. If you go slowly, it's not too bad. You have to lift the drill from time to time and clear the lead from the drill.
Last edited by Synchroman; 07-17-2008 at 07:39 PM.
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