Groschopp offers torque arms on right position gearboxes to provide a pivoted connection resource between the gearbox and a fixed, stable anchor point. The torque arm is used to resist torque developed by the gearbox. Put simply, it prevents counter rotation of a shaft mounted velocity reducer (SMSR) during procedure of the application.
Unlike various other torque arms which can be troublesome for a few angles, the Arc universal torque arm permits you to always position the axle lever at 90 degrees, giving you the many amount of mechanical advantage. The spline design permits you to rotate the torque arm lever to nearly every point. This is also handy if your fork scenario is a little trickier than normal! Functions great for front and backside hub motors. Protect your dropouts – get the Arc arm! Created from precision laser lower 6mm stainless 316 for wonderful mechanical hardness. Includes washers to hold the spline section, hose clamps and fasteners.
A torque arm is an extra little bit of support metal put into a bicycle body to more securely hold the axle of a powerful 
hubmotor. But let’s backside up and get some good more perspective on torque hands on the whole to learn if they are necessary and just why they are so important.
Many people choose to convert a standard pedal bicycle into a power bicycle to save lots of money over investing in a retail . This is usually a great option for a number of reasons and is surprisingly easy to do. Many makers have designed simple change kits that can easily bolt onto a standard bike to convert it into a power bicycle. The only issue is that the poor guy that designed your bike planned for it to be utilized with lightweight bike tires, not giant electrical hub motors. But don’t be concerned, that’s where torque arms can be found in!
Torque arms are there to help your bicycle’s dropouts (the part of the bike that holds onto the axles of the wheels) resist the torque of an electric hubmotor. You see, typical bicycle wheels don’t apply much torque to the bike dropouts. Front wheels essentially don’t apply any torque, so the entrance fork of a bike is made to simply contain the wheel in place, not really resist its torque although it powers the bike with the force of multiple professional cyclists.
Rear wheels on typical bicycles traditionally do apply a little amount of torque in the dropouts, however, not more than the typical axle bolts clamped against the dropouts can handle.
When you swap within an electric hub electric motor though, that’s when torque turns into an issue. Small motors of 250 watts or less are generally fine. Even front forks can handle the low torque of these hubmotors. Once you start getting up to about 500 watts is when complications may appear, especially if we’re talking about front forks and much more so when the material is definitely weaker, as in metal forks.