{"product_id":"wosp-lmdc45-riley-dynator-dynamo-style-12v-50a-fits-riley-rme-rmf-1953-50a-dynator","title":"WOSP LMDC45-RILEY Dynator (Dynamo Style) 12V 50A fits Riley RME \u0026 RMF 1953 50A Dynator","description":"\u003ch3\u003eApplications\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eRiley RME \/ RMF 1953 (wide belt pulley)\u003c\/li\u003e\u003c\/ul\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eVoltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e12V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePolarity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e-VE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAmps\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e50A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePulley Drive\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLMP061\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003cp\u003e6V and 24V units are not available as self-exciting (single wire hook-up).\u003c\/p\u003e \u003cp\u003eDynators, unlike the dynamos they are replacing are polarity sensitive.\u003c\/p\u003e \u003cp\u003e90A version - This increase in output is yielded at higher rpm therefore 'HO' units often need 2-3 times more speed for output and cooling. They are considerably less efficient than a standard unit at low rpm.\u003c\/p\u003e \u003cp\u003e'SD' (super-duty) Dynator (95A) gives high output at low RPM but body Ø increases to 5\".\u003c\/p\u003e \u003cp\u003eTo make a super-duty (SD) unit even higher output by re-winding and uprating (170A) select the 'SD-HO' version. Operational speeds need to increase slightly.\u003c\/p\u003e \u003cp\u003eUnless the part number is superseded with suffix -LS or -HO, then work on the basis that the Dynator has a turn on speed of 1250rpm.\u003c\/p\u003e \u003cp\u003eSome units spin at 1:1 or less than engine speed, therefore low or no charge at idle E.G. ALVIS \/ BEN001 \/ FER001 \/ MGM001 \/ RIL.\u003c\/p\u003e","brand":"WOSPerformance","offers":[{"title":"Negative \/ Standard","offer_id":55488317096315,"sku":"WOSP-LMDC45-RILEY","price":540.0,"currency_code":"GBP","in_stock":true},{"title":"Negative \/ High (90A)","offer_id":55488317129083,"sku":"WOSP-LMDC45-RILEY-HO","price":984.0,"currency_code":"GBP","in_stock":true},{"title":"Negative \/ Super Duty (95A)","offer_id":55488317161851,"sku":"WOSP-LMDC45-RILEY-SD","price":960.0,"currency_code":"GBP","in_stock":true},{"title":"Negative \/ Super Duty High Output (170A)","offer_id":55488317194619,"sku":"WOSP-LMDC45-RILEY-SD-HO","price":1080.0,"currency_code":"GBP","in_stock":true},{"title":"Positive \/ Standard","offer_id":55488317227387,"sku":"WOSP-LMDC45-RILEY+VE","price":630.0,"currency_code":"GBP","in_stock":true},{"title":"Positive \/ High (90A)","offer_id":55488317260155,"sku":"WOSP-LMDC45-RILEY+VE-HO","price":1074.0,"currency_code":"GBP","in_stock":true},{"title":"Positive \/ Super Duty (95A)","offer_id":55488317292923,"sku":"WOSP-LMDC45-RILEY+VE-SD","price":1050.0,"currency_code":"GBP","in_stock":true},{"title":"Positive \/ Super Duty High Output (170A)","offer_id":55488317325691,"sku":"WOSP-LMDC45-RILEY+VE-SD-HO","price":1170.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0713\/4593\/0562\/files\/LMDC45_6e3fe474-6520-4d3d-bfa9-60dc530725db.jpg?v=1749050258","url":"https:\/\/www.greasejunkie.com\/products\/wosp-lmdc45-riley-dynator-dynamo-style-12v-50a-fits-riley-rme-rmf-1953-50a-dynator","provider":"Grease Junkie by Edd China","version":"1.0","type":"link"}