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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
A call for a modern petrol tank
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<blockquote data-quote="davidd" data-source="post: 49359" data-attributes="member: 1177"><p>Panama,</p><p></p><p>I made a fuel tank for the Grey Flash in 1996. It was steel and I kept track of the hours which turned out to be 80. So, pick your hourly rate. Even assuming that I am incredibly slow, cut the hours in half. It is still expensive. The tank would have taken at least half the time in aluminum. This is the custom route.</p><p></p><p>If you were to do a production run with limited tooling, to pay for the tooling you would need 20 to sell units. If you offered the tank you specify in your first post, you might get one order, if you were lucky. Although twenty folks would be clamoring for the tank, what you would find is that some would decline because it was not the original material. Others would say they would buy one if it had more clearance around the carb. One would say he would by one if the hole for the oil tank "was just a little more generous." Another would want a little more capacity. The list of demands will exceed the original subscription.</p><p></p><p>This is not a complaint, just an observation. I think those who have supplied parts to Vincent owners know this dance quite well. It is just human nature. But even a small production tank would most likely cost $2500 in aluminum. Add shipping and painting and the knees start to go wobbly. Others will start to say, "I can get a Lyta tank for $400 and ......."</p><p></p><p>I would be very surprised if there is a plastic that will do the job. Manufacturers like Ducati and KTM have replaced huge numbers of tanks under warranty. I know that a friend with an old Buell plastic tank looked at his bike recently and all the paint had come off the tank. I think most plastic tank applications that are successful are hidden because they cannot live up to an acceptable cosmetic standard.</p><p></p><p>David</p></blockquote><p></p>
[QUOTE="davidd, post: 49359, member: 1177"] Panama, I made a fuel tank for the Grey Flash in 1996. It was steel and I kept track of the hours which turned out to be 80. So, pick your hourly rate. Even assuming that I am incredibly slow, cut the hours in half. It is still expensive. The tank would have taken at least half the time in aluminum. This is the custom route. If you were to do a production run with limited tooling, to pay for the tooling you would need 20 to sell units. If you offered the tank you specify in your first post, you might get one order, if you were lucky. Although twenty folks would be clamoring for the tank, what you would find is that some would decline because it was not the original material. Others would say they would buy one if it had more clearance around the carb. One would say he would by one if the hole for the oil tank "was just a little more generous." Another would want a little more capacity. The list of demands will exceed the original subscription. This is not a complaint, just an observation. I think those who have supplied parts to Vincent owners know this dance quite well. It is just human nature. But even a small production tank would most likely cost $2500 in aluminum. Add shipping and painting and the knees start to go wobbly. Others will start to say, "I can get a Lyta tank for $400 and ......." I would be very surprised if there is a plastic that will do the job. Manufacturers like Ducati and KTM have replaced huge numbers of tanks under warranty. I know that a friend with an old Buell plastic tank looked at his bike recently and all the paint had come off the tank. I think most plastic tank applications that are successful are hidden because they cannot live up to an acceptable cosmetic standard. David [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
A call for a modern petrol tank
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