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• #EV MINI BIKE KIT FREE#

Direct drive motors don't have a clutch, allowing them to do regenerative braking, but this also means that there is some motor drag while coasting as the magnets are always moving past the stator iron. They are typically between 4-9kg and over 20cm (8") diameter. This has enormous advantages in terms of simplicity with no moving parts inside, but in order to achieve adequate torque the direct drive motors need to be fairly large in diameter and heavy. The wheel RPM is the same as the motor RPM. In a direct drive hub motor, there hub IS the motor, so there is no internal gearing. For a number of reasons, almost all geared motors also include a freewheeling clutch so that the wheel will spin freely and not turn the motor over if you are coasting.

Geared hub motors usually weight between 2-4kg and are small in diameter, allowing them to remain pretty discrete on the bike. This allows for a relatively small electric motor to provide substantial wheel torque. In a geared hub, the motor spins internally at a high RPM and a planetary gear transmission reduces this to the low RPM of the bike wheel. And each of those motor types are available for either the front or the rear wheel. Please have a look at our Why Hub Motors article for a more detailed explanation on the benefits of hub motor systems, especially for commuter ebikes.īroadly speaking, there are two classes of hub motors, geared and direct drive. the hub motor will continue to propel the bike even when your legs can't. If your chain breaks, derailleur snags, cogs gets loaded in snow etc. Unlike mid-drive systems such as the Bafang BBSHD, they don't put any additional stress on your existing drivechain and operate with complete independence of your pedal transmission. Hub motors are the most versatile and easiest way of converting a bike or trike over to electric assist. Here’s a summary breakdown of the current packages that we've put together at Grin, from smallest to largest.

For a detailed list on what motors would be compatible with your particular bike frame, have a read of our Bike Compatibility Guide. The TDCM IGH kit is a unique direct drive motor with a 5-speed internal gear hub all in one package, while the G60 rear motor for fatbike conversions supports 170-195mm rear axles. In addition to these common options, we also have a number of specialized kits for niche applications such as the SAW20 with 75mm axles folding bikes, the DD45 for high power 1 speed bikes, and the Grin All Axle for Single Side trike applications. For direct drive hub motors that fit standard bike frames, both our front All-Axle hub and the more cost effective but heavier RH212 / FH212 have been equally popular. Our most popular geared hub motor conversion systems are the Mini G310/G311 or slightly larger SX motors for those wanting a lighweight and silent setup, and the higher end GMAC kits for those wanting awesome hill climbing torque and regen. We understand buying an electric bike is a significant investment so we want to make the buying process as easy as possible for you.Want to purchase a conversion kit from Grin but not sure where to start? This page is intended as a solid primer on the various options and should help narrow things down to the kit most suited to your needs.

#EV MINI BIKE KIT FREE#

We offer fast free shipping zero taxes anywhere except for Wyoming and Washington State, easy returns, personalized customer service, and a PCI compliant 128-bit secure checkout. With the lowest prices guaranteed we cut out the cost of maintaining a brick-and-mortar store and we pass the savings directly on to you. We are an authorized dealer for our suppliers and we ship directly from their warehouse. We know our bicycles inside and out so we can give you the details and knowledgeable answers to any of the questions that you might have. Large generic retailers lack the specialized knowledge to answer specific questions on assembly warranty and product benefits and features. WHAT DIFFERENTIATES US FROM THE COMPETITION IS WE ARE E-BIKE EXPERTS.