E-CRANKS Electric Bike Cranks
Product Information
The E-Cranks are a set of crank arms designed for bicycles. They
are available in three variants: Alloy, Alloy HD, and Carbon. The
package includes one left/non-drive crankarm, one right/drive
crankarm, and two protective carbon crank boots (for MTN Carbon
variant only). The product is manufactured by Praxis Works,
LLC.
Required installation tools for the E-Cranks include a torque
wrench and an 8mm Allen adaptor.
For more information on warranty policy and instructions for
completing a warranty claim, refer to the Full Warranty Policy
available on the Praxis Works website at www.praxis-works.com.
Product Usage Instructions
- Identify the left and right crank arms by looking at the back
of each arm. - Using an 8mm Allen torque wrench, tighten the Crankarm bolt.
Then use the torque wrench to tighten it to 48-55 Nm. - Spin the crank to ensure it moves freely.
- Your installation is now complete.
Note: Make sure to use a torque wrench for
proper installation.
E-Crank Removal
To remove the E-Crank, follow these steps:
- Use an 8mm Allen wrench to loosen the crank arm bolt by turning
it counterclockwise. Initially, the resistance will increase, which
is normal. Keep turning until the crankarm is completely
removed.
Note: Only an 8mm Allen wrench is required for
crank arm removal.
Spare Parts – Main Bolts
If the main bolt breaks or strips, you can replace it with one
of the following options:
- M24 Main Bolt/Extractor (Pre-Installed)
- M30 Main Bolt/Extractor (Pre-Installed)
- ETOR Main Bolt/Extractor (Pre-Installed)
Note: Use grease or Loctite as necessary during
installation.
For any further assistance or inquiries, contact Praxis Works
at:
Praxis Works, LLC
207 McPherson St. Suite E
Santa Cruz, CA 95060
Website: www.praxis-works.com
E-CRANKS
ALL E-CRANKS – GENERAL MANUAL
SAFETY INFORMATION – READ BEFORE RIDE
Since specific tools and experience are necessary for proper installation, it is recommended that the product be installed by a qualified bicycle technician.
Read these crank service instructions carefully before installing it. Loose, worn or damaged parts may cause riding problems and serious injury may occur as a result. If installation and adjustments are not performed correctly, the chain may come off and this may cause you to fall off the bicycle which could result in serious injury. Read these instructions carefully, and keep them for later use.
· Be careful not to let your clothing get caught in the chain while riding, otherwise you may fall off the bicycle. · Check that the chain tension is correct and that the chain is not damaged. If the tension is too weak or the chain is
damaged, the chain should be replaced or else it may break and you may fall off the bicycle. · Use a torque wrench to check the final tightening torque of the main crank bolt. Furthermore, after riding
approximately 60 miles (100 km), use a torque wrench to re-check the tightening torques, including the chainring bolts. Main Crank bolt = Torque 48-52nm. Chainring Bolts = Torque 8-10nm. · If the frame bottom bracket shell is not parallel, shifting performance will be affected and performance will drop. · Check that there are no cracks in the crankarms before riding the bicycle. If there are any cracks, the crankarm may break and you may fall off the bicycle. · Before riding the bicycle, check that there is no play or looseness in the bottom bracket connection. Also, be sure to retighten the crank, chainring bolts, and pedals at periodic intervals. · If you feel any looseness or `play’ in the bearings, the bottom bracket should be inspected/replaced. · To ensure the designed performance, only use 10 or 11sp chains.
· Parts are not guaranteed against natural wear or deterioration resulting from normal use.
· For any questions regarding methods of installation, adjustment, maintenance or operation, please contact a professional bicycle dealer or call Praxis Works.
· Praxis Works assumes no responsibility for damages or injury related to improperly installed components.
READ THE STEP BY STEP INSTALLATION INSTRUCTIONS PROVIDED ON THE OTHER SIDE.
WARRANTY
· Praxis Works products are warrantied to be free from defects in materials or workmanship for two years after original purchase. The warranty is non-transferable and valid to the original purchaser of the product only.
· Any attempt to modify the product in any way such as drilling, grinding or painting will void the warranty. · This warranty is not valid for “abused” or neglected products, or products that are damaged by improper installation. · If a defect is found, our entire liability and your sole remedy shall be, at our option, free repair or replacement of the
Praxis product. · Except as expressly required by law, Praxis Works shall not be held liable for any indirect, special, or consequential
damages.
THIS WRITTEN EXPRESS WARRANTY IS IN LIEU OF ALL OTHER WARRANTIES, IMPLIED OR EXPRESSED. This warranty gives you specific legal rights, and you may also have other rights which vary state to state. For more information on warranty policy and instructions for completing a warranty claim, check out the Full Warranty Policy found at our website. www.praxis-works.com
Note: specifications are subject to change without notice. ©APR 2023 by Praxis Works
Rev G
Part
Qty
1
LEFT /Non-Drive Crankarm
1
2
RIGHT/Drive Crankarm
1
3
Protective Carbon Crank Boots*
2
L & R
SEE BACK OF CRANK!
ALLOY
ALLOY HD
CARBON
REF PHOTOS ONLY
* Rubber Boots for MTN CARBON ONLY!
Any E-Motor
Required Installation Tools
One torque wrench and an 8mm Allen adaptor
Praxis Works, LLC 207 MCPHERSON ST. SUITE E. SANTA CRUZ, CA 95060 www.praxis-works.com
E-CRANK INSTALLATION
1 Look on BACK of each crank arm to identify the LEFT and RIGHT arms. Use an 8mm Allen torque wrench and tighten the Crankarm bolt. Then use Torque Wrench to tighten to
2 Spin crank to make sure it moves freely
8mm
3 Your installation is now complete
TORQUE WRENCH
USE TORQUE WRENCH!
INSTALLATION TORQUE SPECS
Main Crank Bolt 48-55 Nm
“ETOR” Crank Bolt
40Nm
8mm
* E-CRANK REMOVAL *
ONLY an 8mm Allen wrench is used to remove crank arm. Insert Allen wrench, and turn wrench counterclockwise to initially loosen the bolt. After it loosens the resistance will increase, which is normal. Just keep turning to complete removal of the crankarm.
E1xt6ramctmorAllen ECxatrsascetttore tool
SPARE PARTS – MAIN BOLTS If main bolt breaks/strips, these are replaceable
M24
MAIN BOLT/EXTRACTOR
(Pre-Installed)
M30
MAIN BOLT/EXTRACTOR
(Pre-Installed)
ETOR
MAIN BOLT/EXTRACTOR
(Pre-Installed)
GREASE LOCTITE
LOCTITE
GREASE
GREASE LOCTITE
Praxis Works, LLC 207 MCPHERSON ST. SUITE E. SANTA CRUZ, CA 95060 www.praxis-works.com
PRAXIS | Bicycle components for discerning riders like you.
