Groschopp offers torque hands on right angle gearboxes to supply a pivoted connection origin between the gearbox and a fixed, stable anchor point. The torque arm is used to resist torque developed by the gearbox. In other words, it prevents counter rotation of a shaft installed velocity reducer (SMSR) during operation of the application.
Unlike various other torque arms which may be troublesome for a few angles, the Arc universal torque arm enables you to always position the axle lever at 90 degrees, giving you the the majority of amount of mechanical advantage. The spline style lets you rotate the torque arm lever to almost any point. This is also convenient if your fork condition is a little trickier than normal! Functions ideal for front and backside hub motors. Protect your dropouts – acquire the Arc arm! Made from precision laser slice 6mm stainless steel 316 for superb mechanical hardness. Includes washers to hold the spline section, hose clamps and fasteners.
A torque arm is an extra piece of support metal added to a bicycle framework to more securely hold the axle of a powerful hubmotor. But let’s again up and 
get some more perspective on torque arms generally speaking to learn when they are necessary and just why they happen to be so important.
Many people decide to convert a standard pedal bicycle into a power bicycle to save lots of money over investing in a retail . This is definitely a great option for a number of reasons and is remarkably easy to do. Many manufacturers have designed simple transformation kits that can certainly bolt onto a standard bicycle to convert it into an electric bicycle. The only difficulty is that the poor dude that designed your bike planned for it to be utilized with lightweight bike wheels, not giant electrical hub motors. But don’t worry, 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 a power hubmotor. You see, typical bicycle tires don’t apply much torque to the bike dropouts. Front wheels basically don’t apply any torque, therefore the the front fork of a bicycle is made to simply contain the wheel in place, not really resist its torque although it powers the bike with the pressure of multiple professional cyclists.
Rear wheels on normal bicycles traditionally do apply a small amount of torque on the dropouts, but not more than the typical axle bolts clamped against the dropouts can handle.
When you swap in an electric hub engine though, that’s when torque turns into an issue. Small motors of 250 watts or fewer are generally fine. Even front side forks can handle the low torque of the hubmotors. Once you strat to get up to about 500 watts is when concerns can occur, especially if we’re discussing front forks and much more so when the materials is usually weaker, as in metal forks.