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63 Miles Per Gallon?
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<blockquote data-quote="wkmac" data-source="post: 805623" data-attributes="member: 2189"><p>Like you, when I first heard it I too thought WTF but he owns an engineering company and he sat down and ran the numbers cost and design and in the conditions he was using the vehicle, the payback was a little less than 24 months between fuel and the fact that from mileage, the Allison was getting into that iffy range. Since the truck was a GMC duelie he also talked with GM and got guidance from them also. GM argued another Allison with custom ratios but he wanted those 2 extra gears for the RPM's and he even looked at the engine torque curve to make sure it all matched up.</p><p> </p><p>I still find it hard to see costwise to convert to 6 speed as much as I like the idea itself but it only works if you factor in the full replacement cost of the Allison with everything else as I see it. Besides, I think he just wanted a project toy and from what I hear he's got the money for all the toys his heart could desire.</p><p> </p><p>Love the Harley/electric idea. Around 2000' I ran into this guy driving an ugly 3 wheeler called <a href="http://www.3wheelers.com/corbin.html" target="_blank"><span style="color: red">"The Sparrow"</span></a> and once he gave me the full rundown on it, I grew to like it but it's weak link like so many electrics was it's range of only 40 to 60 miles. The batteries instead of something special were normal deep cycle 12 volt which from a longterm maintenance standpoint was a better cost offset as normal electrics run off very expensive batteries. To bad the whole idea died in bankruptcy in the end. A small Harley engine to a generator might have saved the Sparrow to fly another day.</p></blockquote><p></p>
[QUOTE="wkmac, post: 805623, member: 2189"] Like you, when I first heard it I too thought WTF but he owns an engineering company and he sat down and ran the numbers cost and design and in the conditions he was using the vehicle, the payback was a little less than 24 months between fuel and the fact that from mileage, the Allison was getting into that iffy range. Since the truck was a GMC duelie he also talked with GM and got guidance from them also. GM argued another Allison with custom ratios but he wanted those 2 extra gears for the RPM's and he even looked at the engine torque curve to make sure it all matched up. I still find it hard to see costwise to convert to 6 speed as much as I like the idea itself but it only works if you factor in the full replacement cost of the Allison with everything else as I see it. Besides, I think he just wanted a project toy and from what I hear he's got the money for all the toys his heart could desire. Love the Harley/electric idea. Around 2000' I ran into this guy driving an ugly 3 wheeler called [URL="http://www.3wheelers.com/corbin.html"][COLOR=red]"The Sparrow"[/COLOR][/URL] and once he gave me the full rundown on it, I grew to like it but it's weak link like so many electrics was it's range of only 40 to 60 miles. The batteries instead of something special were normal deep cycle 12 volt which from a longterm maintenance standpoint was a better cost offset as normal electrics run off very expensive batteries. To bad the whole idea died in bankruptcy in the end. A small Harley engine to a generator might have saved the Sparrow to fly another day. [/QUOTE]
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