Calibre Bossnut with Tongsheng TSDZ2

[Peter.Bridge]

@Peter.Bridge I am out of my depth here - I thought the bike cam e with a 73mm screw fit BB - why would I need a press fit adaptor? Sorry I'm confused as hell over this...

Sorry, I was trying to answer this post

I have read that this bike has a press-fit Bottom Bracket and the motors all work with screw fit - if this is the case did you have to use an adaptor and has that proved to be a stable fit? Any adaptions needed to get the chainline right?
Any info would be most gratefully received - I don't want to get the bike and find I can't fit the motor.
Many Thanks

For a press fit bottom bracket you need an adapter - if yours is a BSA bottom bracket you don't

 

[theWoosh]

I assume that since this will be just a 350w motor, torque should not be an issue on a threaded BB so won't need any extra bars...?

 

[theWoosh]

Thanks guys - sorry for my confusion. Thanks @saneagle that picture (and oyur explanation really helps) and @Peter.Bridge sorry - I got mislead about the BB type and only had that clarified later.
I think I will be OK

 

[saneagle]

I assume that since this will be just a 350w motor, torque should not be an issue on a threaded BB so won't need any extra bars...?

Answered in post #20.

 

[theWoosh]

I have ordered a toSeven DM02 from China - looks pretty similar to the Tongsheng, so I don't anticipate any major problems. @Paultig did you use the stock chainring supplied with the kit? It' s not narrow-wide so if so, have you had issues with chain slip? Narrow-wide chainrings with the right sort of offset to keep the chainline for these motors are hard to find, even though they take standard 110BCD. I have identified a couple of suppliers that make 9-10mm offset 40/42T narrow-wide chainrings but will see what exactly I need when I have it fitted.
The only potential other issue I can see, is that there is a redundant wireguide on the underside of hte downtube that might need grinding off if it gets in the way and the angle of the frame means that the motor will hang pretty low to the ground...