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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
UFM Dimensions
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<blockquote data-quote="timetraveller" data-source="post: 114870" data-attributes="member: 456"><p>A question for Pushrod Twin, what happened in Australia with a cast aluminium steering head. The ones which I know of and which are being produced locally are LM25 heat treated. The casting shape is slightly beefed up in certain areas so is there evidence that there has been a failure somewhere?</p><p>Secondly, with regard to cleaning the inside of UFM. Good luck with the hot caustic soda but when I cleaned mine out I tried a variety of solvents and shaking a collection of nuts inside the oil tank and a pressure washer. I then cut a hole in the top for a manhole and there was about quarter of an inch of really solid black gunge in the bottom of the tank which required mechanical scraping to remove it. I could not have got that tank clean without the manhole. On another, I made the hole for the manhole and the tank was still completely clean inside. My guess is that it is a function of how the bikes have been used and what oils have been used as to how bad the problem is but you cannot see how bad it is without either a man hole or a fibre optic probe.</p></blockquote><p></p>
[QUOTE="timetraveller, post: 114870, member: 456"] A question for Pushrod Twin, what happened in Australia with a cast aluminium steering head. The ones which I know of and which are being produced locally are LM25 heat treated. The casting shape is slightly beefed up in certain areas so is there evidence that there has been a failure somewhere? Secondly, with regard to cleaning the inside of UFM. Good luck with the hot caustic soda but when I cleaned mine out I tried a variety of solvents and shaking a collection of nuts inside the oil tank and a pressure washer. I then cut a hole in the top for a manhole and there was about quarter of an inch of really solid black gunge in the bottom of the tank which required mechanical scraping to remove it. I could not have got that tank clean without the manhole. On another, I made the hole for the manhole and the tank was still completely clean inside. My guess is that it is a function of how the bikes have been used and what oils have been used as to how bad the problem is but you cannot see how bad it is without either a man hole or a fibre optic probe. [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
UFM Dimensions
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