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The front was enough of a noticeable difference to me not to do the back. I was also getting conflicting information from Gates about compatibility on the rear. Since, the only major update has been the electric horn that fits the instrument panel perfectly (I think it was made for Bosch but...

For sale 2018 R&M Tinker in excellent condition, 406 miles on the odometer. Upgrades include: Busch + Müller E-Bike Horn on a dedicated battery (with charging port) Busch + Müller Mirror Brooks leather handgrips Cane Creek Thudbuster seat post An incredible bike for road and trail, selling...

Ah, I see, thank you.

Did you manage to install it? I just got the B&M horn and thinking about the best way to connect it to the system.

Hoya, the front sprocket change went without a hitch. The rear sprocket turned out to be NOT the Nuvinci one, but a universal which does not quite fit--there is like a few millimeters difference that makes it incompatible (that is the spline that @Trail Cruiser mentioned above) . Thats bad news...

Another update, Gates got back to me to say that they are just finalizing the production of 22t Nuvinci. It will be available in the spring of 2019. Hawt dawg! Gates sent me the 22t Nuvinci rear. A huge thanks and a shout out to Gates.

Thank you so much for the help TC, I've learned a lot. I'll start working on the front---I think there is enough movement on the rear wheel belt tension adjuster to move the hub forward without changing the belt. Meanwhile, I've contacted Gates for advice. 8% is better than nothing for now...

Hmm, how would I go about that?

Thanks to all in this thread. I am going ahead with the change and will report back on the results. Notes: Both cranks were available at https://www.bike-components.de and much cheaper shipping than directly from Gates. Instructions found at youtube.com/watch?v=Urtjc4-LKcQ Tools needed: 9mm...

That's what I thought as well, but the front gear also has a 2.5 multiplier on the Bosch (one revolution of the crank is 2.5 revolutions of the gear). Would this not mean that the factory ratio is 26*2.5/24?

I meant this changes the gear ratio calculation. Would going two teeth up in the front and two down in the back be too much with the multiplier? So instead of 65/24 (2.7) we'd be moving to 70/22 (3.2) direct drive equivalent. Are these the right numbers? I don't have a good feel for what they...

Ok, just spoke to the dealer and he mentioned something about Bosch being at 2.5 ratio on the front cog (one spin of the crank is 2.5 spins of the cog, if I understood correctly). That might change the maths quite a bit. He is going to check with his mechanics and get back to me. I'll keep the...

Thank you, very informative! What tools would I need to do this on my own?

The gear ratio on my Bosch CX / Nuvinci with a Gates carbon belt is a bit too low for me (I believe it is 26 front to 24 back). How difficult would it be to change out the front / rear sprockets? If I am not mistaken I need something larger in the front to gain more top end speed? The bike in...

I suggest a R&S Tinker or Wallareng Tjugo. Beautiful machines from known manufactures with fat tires and sturdy frames to support the weight.

I have an R&S Tinker with many (all actually) of the same requirements. The BOSCH motor is software limited---you can use a mod to remove assist restrictions. Look for torque and wattage ratings rather than "class" designations.

Ah, thank you @rannyv! I did ride both of them and went with the Tinker as I was not a fan of the Shimano speed selector. I will likely look into gearing higher, although my commute has been pretty comfortable so far.

They don't ship to US or Canada.

Not sure why they wont ship to the USA. Scooteretti used to have them back in 2016, but no longer it seems. Anybody know where to get these in the States?

Trek and Avanti both offer 61cm XL frames. Haibike xDuro Urban goes up to 62cm. I could not find anything larger. Avanti is in your price range.