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Tech. Advice: Series 'A' 500cc/1000cc Bikes
Miller Mag-Dyno Parts Needed
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<blockquote data-quote="oexing" data-source="post: 163862" data-attributes="member: 1493"><p>Obviously so far I knew nothing about the Miller Magdyno - and not much about same type Lucas. The Lucas got some friction protective clutch on the tufnol drive gear but the Miller not so. Seems Miller had a v-belt drive instead , changed to chain and sprockets. Not a great step I´d think. No wonder there were troubles in the Miller drive then, no friction protection in there. As power output is only less than 50 W the basically very low loads and troubles on drives have their roots in the mass of the armature whenever there are fast changes in rotational speeds, multiplied by the ratio of sprockets or gears. So some kind of friction damping is essential for protecting the drive. Easiest way is having some belt drive , vee-belt like earlier Millers, or poly-vee type, maybe flat belt types too. So no, chain drive is not a great idea as obviously somebody had to do a mod on that Miller with stripped tooth belt.</p><p> Permanent magnet alternators cannot be regulated but they don´t waste power at overvoltage - unless you got a common motorbike "regulator" . My first test regulator turned all excessive power/voltage into heating up the alternator by shorting one phase, plus heating up the regulator in no time. So I got voltage converters from Ali for getting 13.8V from the servo motors via 3ph rectifier. No feedback into the "alternator" then as the rectifier sits in between . These converters are used in solar power systems I believe and you do not want to go all overvoltage up in heat there ! And no, without real load from bulbs hooked to the converter setup there is no force produced by the servo motor/alternator as I can easily hold the motor with one hand spinning at 2000rpm plus. Reaction force only comes when bulbs are connected, but a strong grip of hand is all you need - with 200 W or more generated at 13.8 V .</p><p> For my Bosch "magdyno" I got a small servo with more than 50 W I hope, very low rotor mass then. So that is what I´d get in case I had a Miller magdyno on my bike. Certainly with some belt drive to go with it - but no toothed type.</p><p> As for looks, with some more efforts you could hide the servo under some nice covers on the Vincent engine. Way nicer than car alternators plus belt drives and more than 200W available from these servos, depending on body length in 4 types.</p><p></p><p> Vic</p><p></p><p>[URL unfurl="true"]https://www.aliexpress.com/item/1005003249695191.html?spm=a2g0o.order_list.0.0.46361802oDYSV9[/URL]</p><p></p><p>voltage converter:</p><p>[URL unfurl="true"]https://www.aliexpress.com/item/1005002533906318.html?spm=a2g0o.productlist.0.0.1515c393eUVJQz&algo_pvid=3c12d483-8864-41a2-84ae-ab3e78b82da0&algo_exp_id=3c12d483-8864-41a2-84ae-ab3e78b82da0-3&pdp_ext_f=%7B%22sku_id%22%3A%2212000021033533362%22%7D&pdp_npi=2%40dis%21EUR%2112.72%2112.72%21%21%216.99%21%21%400b0a0ae216655933174813786e108b%2112000021033533362%21sea&curPageLogUid=IR0msC01mEMi[/URL]</p><p></p><p>[URL unfurl="true"]https://www.aliexpress.com/item/1005002369597214.html?spm=a2g0o.productlist.0.0.1515c393eUVJQz&algo_pvid=3c12d483-8864-41a2-84ae-ab3e78b82da0&algo_exp_id=3c12d483-8864-41a2-84ae-ab3e78b82da0-5&pdp_ext_f=%7B%22sku_id%22%3A%2212000020362898111%22%7D&pdp_npi=2%40dis%21EUR%2131.4%2131.4%21%21%2114.39%21%21%400b0a0ae216655933174813786e108b%2112000020362898111%21sea&curPageLogUid=WLnYsmQJbHRZ[/URL]</p><p></p><p></p><p></p><p></p><p></p><p></p><p>[ATTACH=full]53746[/ATTACH]</p><p></p><p></p><p></p><p>[ATTACH=full]53745[/ATTACH]</p><p></p><p></p><p>[ATTACH=full]53754[/ATTACH]</p><p></p><p>[ATTACH=full]53755[/ATTACH]</p></blockquote><p></p>
[QUOTE="oexing, post: 163862, member: 1493"] Obviously so far I knew nothing about the Miller Magdyno - and not much about same type Lucas. The Lucas got some friction protective clutch on the tufnol drive gear but the Miller not so. Seems Miller had a v-belt drive instead , changed to chain and sprockets. Not a great step I´d think. No wonder there were troubles in the Miller drive then, no friction protection in there. As power output is only less than 50 W the basically very low loads and troubles on drives have their roots in the mass of the armature whenever there are fast changes in rotational speeds, multiplied by the ratio of sprockets or gears. So some kind of friction damping is essential for protecting the drive. Easiest way is having some belt drive , vee-belt like earlier Millers, or poly-vee type, maybe flat belt types too. So no, chain drive is not a great idea as obviously somebody had to do a mod on that Miller with stripped tooth belt. Permanent magnet alternators cannot be regulated but they don´t waste power at overvoltage - unless you got a common motorbike "regulator" . My first test regulator turned all excessive power/voltage into heating up the alternator by shorting one phase, plus heating up the regulator in no time. So I got voltage converters from Ali for getting 13.8V from the servo motors via 3ph rectifier. No feedback into the "alternator" then as the rectifier sits in between . These converters are used in solar power systems I believe and you do not want to go all overvoltage up in heat there ! And no, without real load from bulbs hooked to the converter setup there is no force produced by the servo motor/alternator as I can easily hold the motor with one hand spinning at 2000rpm plus. Reaction force only comes when bulbs are connected, but a strong grip of hand is all you need - with 200 W or more generated at 13.8 V . For my Bosch "magdyno" I got a small servo with more than 50 W I hope, very low rotor mass then. So that is what I´d get in case I had a Miller magdyno on my bike. Certainly with some belt drive to go with it - but no toothed type. As for looks, with some more efforts you could hide the servo under some nice covers on the Vincent engine. Way nicer than car alternators plus belt drives and more than 200W available from these servos, depending on body length in 4 types. Vic [URL unfurl="true"]https://www.aliexpress.com/item/1005003249695191.html?spm=a2g0o.order_list.0.0.46361802oDYSV9[/URL] voltage converter: [URL unfurl="true"]https://www.aliexpress.com/item/1005002533906318.html?spm=a2g0o.productlist.0.0.1515c393eUVJQz&algo_pvid=3c12d483-8864-41a2-84ae-ab3e78b82da0&algo_exp_id=3c12d483-8864-41a2-84ae-ab3e78b82da0-3&pdp_ext_f=%7B%22sku_id%22%3A%2212000021033533362%22%7D&pdp_npi=2%40dis%21EUR%2112.72%2112.72%21%21%216.99%21%21%400b0a0ae216655933174813786e108b%2112000021033533362%21sea&curPageLogUid=IR0msC01mEMi[/URL] [URL unfurl="true"]https://www.aliexpress.com/item/1005002369597214.html?spm=a2g0o.productlist.0.0.1515c393eUVJQz&algo_pvid=3c12d483-8864-41a2-84ae-ab3e78b82da0&algo_exp_id=3c12d483-8864-41a2-84ae-ab3e78b82da0-5&pdp_ext_f=%7B%22sku_id%22%3A%2212000020362898111%22%7D&pdp_npi=2%40dis%21EUR%2131.4%2131.4%21%21%2114.39%21%21%400b0a0ae216655933174813786e108b%2112000020362898111%21sea&curPageLogUid=WLnYsmQJbHRZ[/URL] [ATTACH type="full" alt="magneto Miller Dynamag.jpg"]53746[/ATTACH] [ATTACH type="full" alt="Lucas magdyno.jpeg"]53745[/ATTACH] [ATTACH type="full" alt="P1090664.JPG"]53754[/ATTACH] [ATTACH type="full" alt="P1090667.JPG"]53755[/ATTACH] [/QUOTE]
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Tech. Advice: Series 'A' 500cc/1000cc Bikes
Miller Mag-Dyno Parts Needed
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