The SRM Indoortrainer Basic

• The rotation speed of the flywheel is important for the cycling feeling. When the flywheel is turning fast, the feeling simulates cycling with a big gear on a flat road. When the flywheel is turning slower, the feeling simulates climbing a mountain. Normal spinning bikes only have one gear, which means that the rotation speed of the flywheel depends directly on the cadence. The flywheel only turns fast with a high cadence and it only turns slowly at low cadence.
  SRM saw this problem and uses in its Indoortrainers a seamless, gear-free shifting NuVinci®N360™ hub with a big range. So the cadence and the rotation speed of the flywheel isn´t directly proportional. That means that flywheel speed can operate independently from cadence. When combined with an almost 30 kg flywheel, the result is a much more realistic cycling experience.

• The very strong magnetic brake together with the wide range of the NuVinci®N360™ hub allows an enormous brake power. That means that with a cadence of 40 rpm and a 53 chainring a maximum brake power of about 400 Watt is possible. With a cadence of 120 rpm and a 53 chainring the maximum brake power is about 1.400 Watt. By mounting bigger chainrings and reducing the distance from the magnetic wing and the flywheel you can raise the brake power in at all cadence levels.
  In contrast, the minimum brake power with a cadence of 80 rpm is below 80 Watt. Professionals and Amateurs can train on the same tool!

• The wearless magnetic brake and the gear-free shifting NuVinci®N360™ hub are controlled by the handlebar mounted grip shifters. By using the 40 steps of the shifter for the magnetic brake, every resistance is fast and exactly reproducible. Perfect for interval training!

• In opposition to the most spinning bikes, the NuVinci®N360™ hub has a free-wheel. That´s what most cyclists are used to from their road or mountain bikes. This completely eliminates the high cadence "banking" of the crank that is a common problem for most normal spinning bikes.

• The step-less adjustment of the seat position with length and height adjustable sledges allows the SRM Indoortrainer to fit people between 165 and 200 cm tall. By using the existing scale each rider can quickly and easily find their seat position even if many people use the Indoortrainer.

• The attractive and robust steel and stainless steel construction result in a total weight of 62,5 kg, meaning the SRM Indoortrainer is extremely stable. This becomes very valuable when performing sprint training.

• On the right side of the frame there are standard water-bottle cage bosses; a cage and SRM bottle is included.

• The handlebar is a standard road bar, with brake levers, which means you can keep the same position as your road bike. Because we use a standard 31,8 mm stem you also can mount a MTB handlebar.

• The Indoortrainer uses a Standard BSA 68 mm bottom bracket shell, which means you can mount any BSA 68 mm bottom bracket.

If you order the Indoortrainer with a SRM Training System, you can have even more benefits.

• You have the possibility to use the system in winter or when it rains on the Indoortrainer and in summer on your road bike, which means you get two systems for the price of one. We recommend a SRM Training System with an integrated axle, to ease the process of changing the crank from Indoortrainer to road bike.
  If you order an Indoortrainer with SRM Training System you get a second cadence magnet, handlebar clip, and speed pod without surcharge for mounting on your road bike. This greatly simplifies the movement of your SRM Training System from the Indoortrainer to the racebike.

• The Online-Option of the SRM Training System allows the PowerControl and your PC to sync during training. With the Online-Option you´ve got the possibility to see your training file as a chart "live" on the monitor of your PC. Furthermore you have the possibility to program guidelines of your training.

• The Indoortrainer is always delivered without pedals.