The common answer to this question is “
yes, you must always have a torque arm installed with any hub motor setup
…” The reality is that for many years torque arms were pretty rare in ebike conversions, without issue.
Do you need two torque arms?
it’s designed to bend in case of a wreck, so that the frame isn’t damaged. Sort of a frame fuse. As for the torque arms,
Two is better, but with a good one, only one may be needed
.
Do I need a torque arm?
500 watts is about the limit you’d want to put in rear aluminum dropouts without a torque arm. If you have a 500 watt motor in the front, especially if you have an aluminum fork, you’ll want to use a torque arm.
750 watts or above should almost always use a torque arm
, even in the rear of the bike, even in steel.
How does a torque arm work?
By controlling pinion rise and axlewrap, the torque arm allows the springs to perform their intended function of supporting the vehicle
. Since it’s centrally mounted in the chassis, the torque arm allows the rearend to articulate through its arc without any binding.
What is torque on an electric bike?
In the ebike world, torque (rotational force) is measured in
newton-metres
, while power is measured in watts. Most ebikes have around 50 or 60 newton-metres of torque, while some deliver 80 or 85 newton-metres of torque.
Is one torque arm enough?
One good torque arm can be enough
. My dirt bike has a superb pinch dropout, but only on one side. At some point, I expect I’ll crush or twist an axle, as it’s on the wire side. Good tight nut on the other side.
What is torque rod?
Torque rods are
suspension links that are meant to limit the movement of the axles without limiting suspension articulation
. Torque arm suspensions are very common on medium and heavy-duty trucks and trailers. Torque rods can be longitudinal (running forward and aft), or they can be transverse (running side to side).
What is a motor torque arm?
A torque arm is
available to support the reaction torque of hollow shaft gear units in the shaft-mounted version
. The torque arm can bear tensile stress as well as thrust loads. The length of the torque arm can be adjusted within a certain range.
How do you install torque arms?
Where is the torque arm?
The torque arm is a suspension component that mounts
on a rear-wheel drive vehicle’s rear-drive axle
. This arm allows the vehicle to accelerate in a straight line without rotating the rear axle. This arm also assists the vehicle in braking by applying force to the braking system.
What is the purpose of a torque arm suspension?
What is a Torque-arm, anyway? It’s a long suspension arm that attaches between the rear axle housing and the chassis. Its primary job is
to control axle housing rotation
. It has to be used with a lateral location device such as a Panhard Bar.
Which eBike has the most torque?
| Manufacturer Model Torque [Nm] | Shimano EP8 (Click for review) 85 | Specialized SL 1.1 (Click for review) 35 | TQ HPR 120 S (Click for review) 120 | Yamaha PW-X2 (Click for review) 80 |
|---|
How do I increase the torque on my electric bike?
Is 40 nm enough for an eBike?
General eBike Motor Size Recommendations:
City Bicycles: 250 W / 40 Nm minimum
. Cruiser/Cargo Bicycles: 350 W / 50 Nm minimum. Mountain Bicycles: 450 W / 60 Nm minimum. Speed Bicycles: 500 W / 65 Nm minimum.
