Gearing on 2016 Haibike trekking

[naddy]

Hi

I'd like to do some gear calculations on the sduro trekking RC and the xduro trekking RX

Can anybody tell me how many teeth are on the chain rings of these two bikes. The sduro has two and there's one on the xduro. I'd also like the crank length please.

Also is it correct that on the xduro the chainring size should be multiplied by 2.5 to get the effective size?

Thanks in advance

 

[(NoLongerRegistered#15675)]

The Bosch CD chain ring does travel 2.5 x crank rpm..so for any gearing calcs yes you are correct.
The yam chain ring spins same speed as crank, so easier calcs and possibility to run double chain ring.
Afraid cant help on figures...mine is sduro ( ie Yam)

 

[naddy]

Thanks Flud

I gather Haibike use different chainrings on MTB vs Trekking models with a Bosch cx motor, which makes sense but I've not been able to find out what size.

Thanks for confirming the 2.5 x crank rpm on a Bosch. Do you know the Yam chainring size on 2016 trekking?

 

[(NoLongerRegistered#15675)]

Sorry I don't but at dealers Wednesday so will have a look. I assume its different to mine ( hardseven) ??