What torque do I need ?

[Palmthree]

@Grueso
@PedalUma

Hi ! Thanks to both of you. I did some maths this week and I understand a lot better what the torque is (and what is not, and even how it works mechanically). I think that, for my weight (and the bike + child + bags + basket), 50Nm will be sufficient up to slopes of 10-12% and I'm pretty okay with that. 70Nm could be useful but I think that's better to put money into other components, like the brakes or a good saddle.

 

[CanNik]

I agree with Deacon Blues, you probably want tour torque up in that 85 nm range. My Trek has a Bosc 50nm motor and on really steep hills you are working pretty hard. Throttles seem to be a love/hate thing on this forum but you might want one.

Throttles UK illegal

 

[indianajo]

Throttles UK illegal

I will postpone my trip to the UK permanently. On to Peru.

 

[PCeBiker]

,.. On to Peru.

You've Gotta Ride This Road On Your Visit !!!
Up to 17% grade !!

I don't think I could do it.
My ebike might make it, but I'd get vertigo and fall off the mountain.

 

[TrevorB]

@Grueso
@PedalUma

Hi ! Thanks to both of you. I did some maths this week and I understand a lot better what the torque is (and what is not, and even how it works mechanically). I think that, for my weight (and the bike + child + bags + basket), 50Nm will be sufficient up to slopes of 10-12% and I'm pretty okay with that. 70Nm could be useful but I think that's better to put money into other components, like the brakes or a good saddle.

While a 50nm with 9spd would probably be OK I'd recommend going for 60-70nm motor with 9spd given extra weight of child and gear. 10spd will give you extra low gear which is nice occasionally but also nicer shifting and maybe better brakes and suspension

Shimano MT200 brakes with 160mm or 180mm motors are most common brakes. Very reliable and up to most users braking requirements. If you want significant step up in performance upgrade to Shimano Deore or SLX or Magura MT4 or MT5 with 180mm rotors. They provide lot more power for less effort and are pleasure to use. The upgrade won't be cheap, but they should give 5-10 yrs good service and worth transferring to next bike. Which is good reason to hold onto factory brakes for selling old bike.

Worth spending little more on SLX compared to Deore for tool free reach adjustment, braking performance is same.

 

[Palmthree]

While a 50nm with 9spd would probably be OK I'd recommend going for 60-70nm motor with 9spd given extra weight of child and gear. 10spd will give you extra low gear which is nice occasionally but also nicer shifting and maybe better brakes and suspension

9spd ?

 

[dodgeman]

9 speeds.