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| Panniers are storage bags for your e-bike. Rear racks and pannier bags are by far the best way to transport things on your e-bike. While backpacks can work the extra weight they put on the rider can be uncomfortable and makes it slightly more difficult to ride.
| | '''Intent:''' This page is created as a guideline whether if assembling/designing your own battery pack is a viable option compared to buying a pre-made battery. |
| | Prerequisite software/knowledge (before building a pack) |
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| Rear racks come in 2 basic styles. One that mounts off the seat post alone and is generally good for up to 20lbs max and the style that bolts to the frame below the seat and just above the rear dropouts that can handle much more weight.
| | Ability to draw 2D schematics/diagrams. - you need to do this if you are trying to make a pack with a certain dimension constraint. use of CAD is encouraged. |
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| ==Mounting your rack==
| | You know how to use the [https://ebikewiki.com/index.php/Simulator|Grin simulator] - You need to know how much current your battery will be drawing. |
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| Mounting a rack to your bike is a very simple process that requires very few hand tools outside of an Allen key set and maybe a wrench. Racks mount to 2 threaded holes in the frame just behind and below the seat, as well as two threaded holes just above the rear axle.
| | Ohm's law. Since we are not going into AC power, complex number/angle is not needed. |
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| If you lack the hole on the upper part of your frame near the seat often your seat post clamp can be replaced with one that has the required mounting holes. Do note that you will have to measure your frame as seat post clamps come in different sizes.
| | Ability to read battery cell datasheet. - As the wiki page becomes older, more cell info will be added to the page; but for cells that are not on this wiki/internet in a simplified format, reading datasheet will be necessary. [https://www.batteryspace.com/prod-specs/11514.pdf LG M50LT datasheet, from batteryspace], [https://www.batemo.de/products/batemo-cell-library/lg-energy-solution-inr21700-m50lt/ Simplified datasheet of M50LT, courtesy of Batemo.de] |
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| Example seat post clamp with rack mounting holes on [https://www.amazon.ca/gp/product/B001V537I0 Amazon.ca] [https://www.amazon.com/gp/product/B001V537I0 Amazon.com]
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| If you lack the lower mounting points, P clamps or a rear rack with clamp on support tubes can be used. Please note that if you have rear suspension that you are pretty much limited to the kind of rack that clamps on to the seat post and has no side supports. Seatpost only racks generally bad to mount side panniers on as nothing stops the pannier from hitting the rear tire.
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| ==What rack is right for you?==
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| Your rack has to physically fit your bike. This means your bike must have matching mounts and at the right width apart. The rack must also clear the rear tire. Most racks are designed to be adjustable from 26" to 29" tires, but some may not. Do check the description before buying. It is also important to get the width of the rack correct. Fat bikes will require fat racks, and some bikes put the rear disk brake in a place that obstructs some racks.
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| Here are some examples of rear racks:
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| Rear rack for most mountain bikes, rated 55lbs on [https://www.amazon.ca/gp/product/B00DWKUAZK Amazon.ca] [https://www.amazon.com/gp/product/B00DWKUAZK Amazon.com] Note: might not fit all bikes with disk brakes. Won't fit fat bikes.
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| Rear rack with extra clearance for disk brakes that would be in the way of other racks. On [https://www.amazon.ca/Ibera-Bike-Rack-Frame-Mounted-Adjustable/dp/B00AA8GFSI Amazon.ca] [https://www.amazon.com/Ibera-Bike-Rack-Frame-Mounted-Adjustable/dp/B00AA8GFSI Amazon.com]
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| Rear rack designed for bikes that don't have any of the mounting points to install a rear rack: [https://www.amazon.ca/YaeTact-Capacity-Aluminum-Bicycle-Adjustable/dp/B0784W1WC3 Amazon.ca] [https://www.amazon.com/Dirza-Bicycle-Release-Adjustable-Capacity/dp/B075WS4KX3 Amazon.com] (Different product on .ca vs .com but visually seems to be same product). Note that you can not adjust the angle of the rack to the seat post on this style of rack.
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| ==What pannier bag to pick?==
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| Consider your shopping requirements when buying panniers. Make sure it is big enough for everything you plan to buy, some items like frozen pizzas won't fit in smaller panniers. Also consider you can wear a backpack as well for even bigger grocery trips for storing very fragile items like bread, or bulky items like 4L jugs of milk in the backpack while the rest goes in the panniers.
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| Here are some examples of pannier bags:
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| Large high quality waterproof pannier bags [https://www.amazon.ca/gp/product/B07T1W96N6 Amazon.ca] [https://www.amazon.com/Rhinowalk-Pannier-Shoulder-Professional-Accessories/dp/B07VX7NC7D Amazon.com] (Note different manufactures but visually seems to be same product from .ca and .com)
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| Simple medium quality pannier bags [https://www.amazon.ca/BV-Panniers-Adjustable-Carrying-Reflective/dp/B00ESLVDIU Amazon.ca] [https://www.amazon.com/BV-Panniers-Adjustable-Carrying-Reflective/dp/B00ESLVDIU Amazon.com]
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| ==Notes==
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| Note there are many other seat post clamps, racks and pannier bags available online. If you don't live in Canada/USA, consider ebay and other online cycling specific stores and your local bike shop. The local bike shop can be great as you can often test fit the rear rack by holding it up to your bike and make sure it will mount properly before buying it.
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Intent: This page is created as a guideline whether if assembling/designing your own battery pack is a viable option compared to buying a pre-made battery.
Prerequisite software/knowledge (before building a pack)
Ability to draw 2D schematics/diagrams. - you need to do this if you are trying to make a pack with a certain dimension constraint. use of CAD is encouraged.
You know how to use the simulator - You need to know how much current your battery will be drawing.
Ohm's law. Since we are not going into AC power, complex number/angle is not needed.
Ability to read battery cell datasheet. - As the wiki page becomes older, more cell info will be added to the page; but for cells that are not on this wiki/internet in a simplified format, reading datasheet will be necessary. LG M50LT datasheet, from batteryspace, Simplified datasheet of M50LT, courtesy of Batemo.de