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Barnsy posted:A lot of electric motors are easily capable of over 30k RPM, is there a reason Brammo went with a low-revving version? There is also the problem of gearing that down to the correct final drive for the wheel. More RPM means a bigger or more complex reduction drive. With the new project bike I've got a motor coming that makes best power/efficiency at around 7k. But I wanted a bike that topped out at around 28mph. I've had to go with a 5:1 belt primary driving a 4:1 chain final drive to get there for my given wheel size. 4:1 is a 14:56 front/rear sprocket, for reference.
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Jun 30, 2015 09:33
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| # ¿ Apr 28, 2024 16:39 |
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Z3n posted:Yeah - what project are you working on? Start a thread or post it somewhere Pretty much a bicycle with the power of a small motorcycle. I've got a fair bit done but the motor and primary drive are still on the way from the guys who built it in the states. As soon as the drive unit is here the build thread will commence  I've got a guy who says he can get me an exhibition run at the local sprint in September if I can get it ready in time. quote:(colors TBD, although likely to be some form of subtle gently caress you to OEM restoration purists) ZRX paint job but with Honda badging. When people mention it, deadpan, explain it like you really wanted a ZRX but all you could find was a CBX. ReelBigLizard fucked around with this message at 10:08 on Jul 1, 2015 |
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Jul 1, 2015 09:58
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Z3n posted:It's an option, especially before all the stuff goes out for paint. Is the axle solid? If so how about a Nut Splitter?
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Jul 3, 2015 09:13
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Love it. KTM used to run a custom competition but I think no longer, reckon you'd be a strong contender, looks really together and well executed.
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May 27, 2016 10:48
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