Compare Bosch Gen5 Race Motor Overrun against Avinox M2S Overrun.

[Singletrackmind]

Compare Bosch Gen5 Race Motor Overrun against Avinox M2S Motor Overrun.

Does Avinox M2S give option to exceed 20mph?

 

[Greg Watts]

Compare Bosch Gen5 Race Motor Overrun against Avinox M2S Motor Overrun. Does Avinox M2S give option to exceed 20mph?

Right, @Singletrackmind, this is a proper comparison with quite different philosophies at work. Let me break it down. Bosch Gen 5 Race (CX-R) Overrun

The CX-R's overrun behaviour depends heavily on which mode you're in. Race mode always gives the full 2m overrun no matter what, which is the UCI e-enduro legal limit. It's essentially all or nothing in Race mode.

The Race mode is still a handful in some situations. It always has maximum motor overrun, and reviewers ended up going the maximum 2m every time, grabbing the brakes to prevent the bike launching into the wild.

The smarter option is eMTB+ mode, which you also get on the CX-R. eMTB+ adds variable overrun: depending on how hard you press on the pedals, the motor gives you a proportionate boost, up to 2m of continued drive.

Bosch wanted riders to control the extent of overrun through their feet. A short stab on the cranks gives a short overrun, while a longer quarter-turn ratchet gives the maximum 2m extended boost.

That's genuinely clever engineering. @jbrown15 reckons the Gen 5 with everything dialled up has as much overrun as the old Gen 4 Race, and @Bogdan_CH found he could adjust eMTB+ overrun down to -2 when it felt too aggressive.