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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
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<blockquote data-quote="oexing" data-source="post: 108300" data-attributes="member: 1493"><p>Hi Bill,</p><p>there are a number of suitable DC motors, the MY / ZY 6812 are brush types, nicely made, all 68mm diameter. So you´d have to do a bit of milling the engine case like in my photo above. But then you can get replacements any time. I liked the brushless system so the square types could do, after a bit of a turning action in the lathe you could shroud them with a tubular sleeve for a more traditional look. </p><p> Aliexpress has a wide selection of motors but honestly I don´t always believe descriptions so first study all features for getting an idea. At least I did my tests and maybe get some more motors for testing. The spindle motors might be suitable , better test them for performance at engine speeds. I ´d think they will not feed much current at our speeds. The more powerful and more expensive motors may have bigger shafts and bearings, cannot tell yet, so I fabricated new end caps for two ball bearings for ease of mind. </p><p> So the Altons no longer have gears for upping the revs of the motor ? In this case I´d believe their power dropped a bit to what sort of wattage ? I still could not find numbers about this matter - but then they fit without any mods to the engine. </p><p> Anyway, there are a few links below for browsing Aliexpress - or Ebay if you like. </p><p></p><p> Vic</p><p>P.S. the last type is the one in my photo I think.</p><p></p><p></p><p></p><p><a href="https://www.ebay.de/itm/Electric-Scooter-Motor-24-Volt-DC-150-Watt-24v-Brushed-ZY6812-19T-Belt-Drive/162954847589" target="_blank">MY 6812 DC Motor</a></p><p><a href="https://www.aliexpress.com/item/32966781547.html?spm=a2g0o.cart.0.0.10fa3c00qmM9Os" target="_blank">Brushless 200 W</a></p><p><a href="https://www.aliexpress.com/item/32781754478.html?spm=a2g0o.cart.0.0.10fa3c00qmM9Os" target="_blank">Brushless 150 W</a></p><p><a href="https://www.aliexpress.com/item/32953159505.html?spm=a2g0o.cart.0.0.10fa3c00qmM9Os" target="_blank">Brushless 210 W</a></p><p><a href="https://www.aliexpress.com/item/32817016977.html?spm=a2g0o.cart.0.0.10fa3c00qmM9Os" target="_blank">Brushless 188 W</a></p></blockquote><p></p>
[QUOTE="oexing, post: 108300, member: 1493"] Hi Bill, there are a number of suitable DC motors, the MY / ZY 6812 are brush types, nicely made, all 68mm diameter. So you´d have to do a bit of milling the engine case like in my photo above. But then you can get replacements any time. I liked the brushless system so the square types could do, after a bit of a turning action in the lathe you could shroud them with a tubular sleeve for a more traditional look. Aliexpress has a wide selection of motors but honestly I don´t always believe descriptions so first study all features for getting an idea. At least I did my tests and maybe get some more motors for testing. The spindle motors might be suitable , better test them for performance at engine speeds. I ´d think they will not feed much current at our speeds. The more powerful and more expensive motors may have bigger shafts and bearings, cannot tell yet, so I fabricated new end caps for two ball bearings for ease of mind. So the Altons no longer have gears for upping the revs of the motor ? In this case I´d believe their power dropped a bit to what sort of wattage ? I still could not find numbers about this matter - but then they fit without any mods to the engine. Anyway, there are a few links below for browsing Aliexpress - or Ebay if you like. Vic P.S. the last type is the one in my photo I think. [URL='https://www.ebay.de/itm/Electric-Scooter-Motor-24-Volt-DC-150-Watt-24v-Brushed-ZY6812-19T-Belt-Drive/162954847589']MY 6812 DC Motor[/URL] [URL='https://www.aliexpress.com/item/32966781547.html?spm=a2g0o.cart.0.0.10fa3c00qmM9Os']Brushless 200 W[/URL] [URL='https://www.aliexpress.com/item/32781754478.html?spm=a2g0o.cart.0.0.10fa3c00qmM9Os']Brushless 150 W[/URL] [URL='https://www.aliexpress.com/item/32953159505.html?spm=a2g0o.cart.0.0.10fa3c00qmM9Os']Brushless 210 W[/URL] [URL='https://www.aliexpress.com/item/32817016977.html?spm=a2g0o.cart.0.0.10fa3c00qmM9Os']Brushless 188 W[/URL] [/QUOTE]
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