Technical question [chainring size]

[TonTonUB]

Hello,

I'm here to ask a stupid / noob / paranormal question.
What are the maximum and minimal chainring size , that can be mounted on E-mtb ?
And of course, what are the limits on each motor (mainly shimano / bosch / brose / yamaha).

I ask this because on my regular MTB, on steep climbs, i'm used to use a bigger chainring than usual, making laugh most of other bikers. But it works for me, heh. The only downside is that the chain doesnt like it much.

Thank you,

 

[Varaxis]

Depends on chainstay clearance usually.

Too big and the teeth touch the chainstay at 9 o'clock.

Too small and the chain might not clear the top/bottom of the chainstay.

Then there's anti-squat to worry about if you have rear susp.

 

[TonTonUB]

Oh, thank you for those precisions. I didn't even think about them !