{"id":133,"date":"2008-02-02T06:00:21","date_gmt":"2008-02-02T10:00:21","guid":{"rendered":"http:\/\/www.etotheipiplusone.net\/?page_id=133"},"modified":"2021-01-17T21:51:35","modified_gmt":"2021-01-18T01:51:35","slug":"electric-scooter-20-beta-aka-snuffles-reloaded","status":"publish","type":"page","link":"https:\/\/www.etotheipiplusone.net\/?page_id=133","title":{"rendered":"Project RazEr"},"content":{"rendered":"

\"\"<\/a><\/p>\n

As a followup to Snuffles The First<\/a>, I have actually decided to down-engineer<\/em> something (can you believe it?) while adding tweaks and more advanced technologies. This rebuild is intended as a testing bed for small-EV technologies as well as my way of getting around town faster.<\/p>\n

The design has exactly two<\/strong> moving parts – the front wheel and the rear wheel. Propulsion is provided by a custom-built in-wheel electric motor (a hub motor<\/em>) that is mounted inside the rear wheel. No mechanical parts protrude or rotate externally, and the standard fender friction brake still works.<\/p>\n

Batteries are housed in an aluminum frame extension under the scooter body. The entire scooter weighs under 14 pounds and can propel a 150 pound person at speeds up to 12 miles per hour on level ground.<\/p>\n

The epic saga of the RazEr, including a full engineering history, can be found in its build report category<\/a>.<\/p>\n

If you are interested in building your own hub motors, I have prepared an Instructables page<\/a> detailing some of the underlying principles behind RazEr’s motor.<\/p>\n\n\n\n\n\n\n\n\n\n\n\n
Vehicle<\/strong><\/td>\nRazor A3-125<\/td>\n<\/tr>\n
Drivetrain<\/strong><\/td>\nDirect drive in-wheel
\n125mm polyurethane wheels<\/td>\n<\/tr>\n
Mechanical<\/strong><\/td>\n6061 Aluminum structure
\nSteel forks and folding joint
\nCushy handlebars<\/td>\n<\/tr>\n
Motor<\/strong><\/td>\nCustom BLDC<\/td>\n<\/tr>\n
Controller<\/strong><\/td>\n100 amp HV Brushless airplane ESC
\n5K potentiometer-to-RC interface<\/td>\n<\/tr>\n
Battery<\/strong><\/td>\n5.0Ah 29.6 volt lithium polymer battery<\/td>\n<\/tr>\n
Top Speed<\/strong><\/td>\n12MPH<\/td>\n<\/tr>\n
Range<\/strong><\/td>\n4 to 5 miles<\/td>\n<\/tr>\n
Curb Weight<\/strong><\/td>\n13.5 pounds<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
\n","protected":false},"excerpt":{"rendered":"

As a followup to Snuffles The First, I have actually decided to down-engineer something (can you believe it?) while adding tweaks and more advanced technologies. This rebuild is intended as a testing bed for small-EV technologies as well as my way of getting around town faster. The design has exactly two moving parts – the […]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":943,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-133","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.etotheipiplusone.net\/index.php?rest_route=\/wp\/v2\/pages\/133","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.etotheipiplusone.net\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.etotheipiplusone.net\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.etotheipiplusone.net\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.etotheipiplusone.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=133"}],"version-history":[{"count":8,"href":"https:\/\/www.etotheipiplusone.net\/index.php?rest_route=\/wp\/v2\/pages\/133\/revisions"}],"predecessor-version":[{"id":5102,"href":"https:\/\/www.etotheipiplusone.net\/index.php?rest_route=\/wp\/v2\/pages\/133\/revisions\/5102"}],"up":[{"embeddable":true,"href":"https:\/\/www.etotheipiplusone.net\/index.php?rest_route=\/wp\/v2\/pages\/943"}],"wp:attachment":[{"href":"https:\/\/www.etotheipiplusone.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=133"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}