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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Aluminum Push Rods
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<blockquote data-quote="davidd" data-source="post: 48073" data-attributes="member: 1177"><p>I have used plain aluminum push rods just turned on the lathe. No anodizing, no steel ends, and they work fine. My friend Henry made them. He originally made them of 7075 and they bent quite readily. Apparently, 7075 is high strength, but when heated its strength does not do as well as some of the other alloys. I think the second pair were 2024 which was lower strength, but the hot strength is pretty good. I hope that I have remembered that correctly. Plain aluminum ends are fine if you spend some time matching them to the cups.</p><p></p><p>So far the growth of the aluminum has not seemed to be an issue. It may be that the rod is short enough that it is not a big issue. You can always check them hot and adjust them and then check them cold to see what the clearance feels like. </p><p></p><p>David</p></blockquote><p></p>
[QUOTE="davidd, post: 48073, member: 1177"] I have used plain aluminum push rods just turned on the lathe. No anodizing, no steel ends, and they work fine. My friend Henry made them. He originally made them of 7075 and they bent quite readily. Apparently, 7075 is high strength, but when heated its strength does not do as well as some of the other alloys. I think the second pair were 2024 which was lower strength, but the hot strength is pretty good. I hope that I have remembered that correctly. Plain aluminum ends are fine if you spend some time matching them to the cups. So far the growth of the aluminum has not seemed to be an issue. It may be that the rod is short enough that it is not a big issue. You can always check them hot and adjust them and then check them cold to see what the clearance feels like. David [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Aluminum Push Rods
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