Has anyone installed the Bosch 'small crank' firmware on their bike?

[Akelu]

I'm thinking about dropping from 170 to 165mm cranks, and was wondering if anyone else has done that, and then gone to their LBS to have their motors software changed over to the short crank version?

Would just like to get any feedback about the change and how you felt it changed the bike. I know it changes how fast you reach max engine output for the pedal input, but was just wondering if a) you used short cranks with the original long crank version and how that felt vs using the short crank with the short crank firmware.

Thanks!

 

[KenX]

Don't think you'll need it, went from 165 to 155 on my Decoy, and 170 to 152 on the wife's Lapierre, aside from it feeling a bit different, from a motor assist viewpoint nothing needed tweaking......

 

[stefan7]

I unfortunately can't help with the original question but I am curious which 155 crank arms @KenX is using for the Decoy. I have a hard time finding shorter crank arms (155/150) for the CX4.

 

[Tonycube]

I unfortunately can't help with the original question but I am curious which 155 crank arms @KenX is using for the Decoy. I have a hard time finding shorter crank arms (155/150) for the CX4.

Hope do 155 cranks for borsch cx gen 4.
I got them on mine and i did not update the software.
Just had to adjust seatpost a little.
Hope this helps from Tony

 

[rod9301]

I have 155 cranks, updated the software, can't feel any different

 

[jerry]

I have 155 cranks, updated the software, can't feel any different

this means it worked. Does exactly what its supposed to do then.

 

[Tonycube]

Does what it says on the tin lol

 

[IMeasureStuff]

My LBS did did the short crank update even though it has the original 165 cranks installed on one of our 2020 Trek Rail 7. The other 2020 Rail 7 has the standard software update. When I get a chance I will compare the two to see if the difference is noticeable.