Groschopp offers torque arms on right angle gearboxes to provide a pivoted connection source between the gearbox and a set, 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 swiftness reducer (SMSR) during procedure of the application.
Unlike other torque arms that can be troublesome for some angles, the Arc universal torque arm permits you to always position the axle lever at 90 degrees, providing you the the majority of amount of mechanical advantage. The spline design allows you to rotate the torque arm lever to almost any point. This is also useful if your fork problem is a little trickier than normal! Performs ideal for front and backside hub motors. Protect your dropouts – receive the Arc arm! Made from precision laser slice 6mm stainless 316 for remarkable mechanical hardness. Includes washers to carry the spline section, hose clamps and fasteners.
A torque arm is an extra piece of support metal put into a bicycle body to more securely hold the axle of a robust hubmotor. But let’s back up and get some good even more perspective on torque arms generally to learn if they are necessary and why they will be so important.
Many people decide to convert a typical pedal bicycle into a power bicycle to save lots of money over investing in a retail . This is normally an excellent option for several reasons and is amazingly easy to do. Many suppliers have designed simple change kits that can easily bolt onto a typical bike to convert it into a power bicycle. The only problem is that the indegent man that designed your bicycle planned for it to be utilized with lightweight bike wheels, not giant electrical hub motors. But don’t fret, that’s where torque arms come in!
Torque arms are there to greatly help your bicycle’s dropouts (the area of the bike that holds onto the axles of the wheels) resist the torque of a power hubmotor. You see, ordinary bicycle wheels don’t apply much torque to the bike dropouts. Front wheels actually don’t apply any torque, therefore the front fork of a bike was created to simply hold the wheel in place, certainly not resist its torque although it powers the bike with the drive of multiple professional cyclists.
Rear wheels on standard bicycles traditionally do apply a little amount of torque on the dropouts, but not more than the standard axle bolts clamped against the dropouts are designed for.
When you swap in an electric hub electric motor though, that’s when torque becomes a concern. Small motors of 250 watts or significantly less are generally fine. Even the front forks can handle the low torque of these hubmotors. Once you strat to get up to about 500 watts is when challenges may appear, 
especially if we’re talking about front forks and even more so when the materials is certainly weaker, as in aluminium forks.