#24
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Ford CMP horn- restoration
Good Day,
Here is another project I finished over the winter. A year ago I looked at ways to repair rust holes in the diaphragm on a Ford horn. I put it on the back burner as I do when a solution doesn't quickly spring to mind. A replacement diaphragm was not forthcoming so I thought of ways to seal the holes at least to prevent ingress of water. I discounted solder as that would probably fall out over time with vibration. Brazing or welding was out due to the possible heat effect on the diaphragm which I think is type of spring steel or tempered steel to allow for it to flex during vibration. I found some vinyl inflatable pool patches in the shed and thought that might be a solution if glued to the diaphragm. Being thin, Light weight, and flexible it should not greatly affect the resonance of the diaphragm. I tested a piece of it on a tin can using Sika Flex contact adhesive and it took all my strength to pull it of after it cured so I gave it a go. It stuck well, and after reassembly and putting it across a 6V charger it blurted out a loud sound for the first time I would imagine in quite a few decades. Looking at the original condition I really didn't think it would work so it was a very pleasant surprise. Cheers,
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F15-A 1942 Battery Staff Jacques Reed Last edited by Jacques Reed; 09-11-19 at 05:11. |
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