Re: 1930 Lockwood Chief Revival

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george-emmanuel

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#74645

The sight glass o.d. I believe is 7/16ths and I have not been able to find cast acrylic in 7/16ths. I used 1/2" cast acrylic on mine. Cast acrylic can be threaded in a lathe. Unlike the sight glass on the Johnson’s which are blunt ends, the Lockwood glass is threaded.The trick is to machine the threads so when screwing on the ends they line up together when tightened and are exact in overall length. You also want the threads to be snug on the o.d., so be careful when you cut. Since the Lockwood is 7/16ths you have to cut the end down and then thread. I threaded one end for snug fit, marked the other end, then cut threads so the other end would line up. A bit tricky. I suggest blue locktight for sealing purposes.

George


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