TSDZ2 - Dual Chainring - a solution that works

[@Redstonian11]

This was awesome! Thanks for making this. I'll keep an eye out for those vintage types!

[@the_geargineer]

Thanks for the nice comment. Always happy to help solving a problem!

[@maxspruit8370]

Thanks!

[@erjumbo]

Thank you for that 👍

[@the_geargineer]

You are welcome! Hope this could help a little bit.

[@alextrotman2743]

Amazing

[@pellepan2457]

Great info! Is this narrow chainrings or kind of standard for 7speed, 8speed which uses a bit wider chain?

[@the_geargineer]

I used a SRAM 34T chainring (part number B004YWGV4E ). This is specified for 10-fold but works also well with a recent e-bike build based on shimano 9-fold. I usually don't bother much about the chainrings specification besides number of teeth and holes, but always use a chain matching the number of sprockets on rear wheel (maybe not entirely professional attitude :-). Thanks!

[@AmArSiEBARS]

Doubling the gear ratio just like that! Perfect for my touring setup

[@the_geargineer]

Glad it helps!

[@SuperJohnfoster]

what size is the small ring in front

[@the_geargineer]

The small ring is 34T. This is the minimum on Tsdz2.

[@АйзекБариев]

42T с завода, но можно 42Т+52Т без переключателя

[@alexandruciobanu9434]

Hi !

[@kevinwilliams8502]

Not needed ,i fail to see the point of this

[@superwag634]

So you can reduce cadence which allows motor to apply torque. This motor reduces torque above 90 cadence so if you go fast and cadence is high, motor assistance reduces which is the opposite of intent. Capish?

[@kevinwilliams8502]

@@superwag634 52t chainring and 48/11 on the back , sorted , capish?