Frame Details For what appears complicated to work on, the G3’s aluminum frame is surprisingly easy to service, however, there are some specifications that are pointing out.
The rear hub uses the older standard of non-Boost with a width of 142mm and a 12mm diameter axle. The Pinion belt cog also runs on a single speed driver to maximize the hub flange, so finding a replacement wheel in a pinch will be less likely than the common sizes of 148 and 157mm of today’s standards.
Zerode has also kindly allowed for the rear brake line to be run neatly into either side of the top tube, depending on which side you prefer to run your rear brake on. If you opt for the frame kit, you will want to pay attention to the 203 mm post brake mount. The wire runs through the downtube to the gearbox and battery while the cable actuated version exits just above the crankset.
Adjustments on the G3 are limited. There are no alternate chainstay lengths or shock progression flip-chips, however, the reach could be increased by using an aftermarket +/-10mm headset in the full ZS56 head tube. The built-in bumpers are substantial in thickness and even limited the turning radius of a Fox 40.
Zerode covers their frames with a lifetime warranty for the original owner and has tons of literature available on their website that explains how to care for the gearbox and belt.
DrivetrainThe 6-speed Pinion C1.6 gearbox is standard equipment on the G3, however there’s a choice between mechanical or electronic shifting. The 6-speeds give a 295% range with ratios starting at 2.86 and ending at 8.44. Each step is said to be a 24.3% change.
One of the largest deterrents to the mechanical system is the need to stop pedaling in order to change gears. The second is the twist shifter. The C1.6i Smart.Smart gearbox upgrade takes care of both of those drawbacks.
A sensor in each of the 165mm long crank arms takes care of the semi-automatic shifting by changing gears at the 6 and 12-o’clock crank positions when the torque instantaneously hits zero. The ergonomic dual push button shifter has rubberized paddles that take little effort to tap through the gears. The Pinion app connects by Bluetooth, allowing for quick calibrations, shifter direction and further tuning to be personalized.
Pinion says the battery nestled inside lasts 20,000 shifts, or 100 hours. In less than 3 hours, the battery can reach full charge. The connector is located next to the shifter and runs parallel on a wire, but is wrapped together with the shifter wire. Regarding the Gates carbon belt, those should last 30,000km, roughly three times as long as any chain.
The Gates carbon belt has a molded central ridge to hold it in line with the middle of the grooved cogs. Removing the rear wheel requires unbolting the rear axle and then lifting the belt off of the lower pulley to give enough slack in the system.
As for the efficiency, Zerode acknowledges studies on their website
here that state there can be efficiency loses in gearboxes and drivetrains, however, those were tested again chain and derailleur drivetrains in ideal conditions. We’ll weigh in about how that stacks up in the real world later in the ride impressions.
All of Pinion’s C-Line gearboxes are covered by a 2-year (optional to upgrade to 3) warranty and require an oil change every 10,000km. Their detailed FAQ page with even more info can be found
here.
I don't know about Pinion's, but for Rohloff hubs this takes a few 1000 km
I wonder if reviewers are receiving relatively new gearboxes?
You can shift under load. Only 3-4, and 6-7 are not possible to shift under load.
So if you know that you get used to it in the most difficult conditions without any problems.
What do other Zerode owners think?
A derailleur looks WAY more Rube Goldberg! Push a lever that turns a wheel that pulls a cable that pulls a lever that moves a parallelogram that moves a clutch and holds a cage that hold wheels that push a chain into shapes machined into a stack of gears so that the shapes catch the chain and move it up and down the stack of cogs. Yeah, simple!
So, just like on a bike.
It's definitely the high pivot, this was the way I described my experience on a Druid years ago.
It depends a lot on where the high pivot is located, on my Kavenz VHP Gwagon, it's not a problem:
kavenz.com/blog/gwagon
The extension under bob should waste more energy then just the bob alone. Also, the old DW link design found 135 percent to eliminate most bob while still tracking bumps under pedaling. Bump tracking shouldn't be an issue with high pivots, so maybe Kavenz found a new sweet spot.
Also, I though Gates didn't recommend sprockets as small as those idlers?
A HG driver can be set up singlespeed.
My commuter Pinion P1.18 has been OK, apart from a catastrophic failure four years in (warranty service took about a week total). I'm sure a chain drive would've been far more problematic in that use case (10 miles per day in any weather with little maintenance since 201 .
Assuming the shifters are unindexed like Rohloff gripshift(?), they are so simple it shouldn't be hard to make them durable
I have a Comotion Rohloff dropbar shifter that I rekon is near indestructable
Hopefully the G3 leads to a revamp of the Taniwha and Katipo. A geometry update (Flip-chip options wouldn't hurt) plus that electronic shifter would get me back on a Zerode!
Unlike a derailleur based system, which requires pedal pressure in the "power stroke" to force the chain onto a new gear, you need to retrain your brain to shift in the "non power stroke" which reduces pressure on the pedals, which allows the gearbox to change gears.
I have no issues shifting my Pinions while pedaling.
I'd be quite interested as to why they came to that decision over more common hub spacing.
1. Since the G3 runs on single speed drive, the 142mm hub improves the spoke bracing angles, which are also symmetrical, so there is no need to dish the wheel.
2. That also allows the width of the dropouts to be narrow for increased ground clearance.
3. Has a marginally lighter unsprung mass than a 148 hub.
4. Single speed hubs are more common in 142 than 148.
5. It's the same hub used on their enduro bike, the Taniwha, although that bike uses a 29" rear wheel.
I like Zerode, I rode one for the past two years, but their trail bikes are too conservative for enduro use even when using the LT link and a long travel fork, plus they really need to ditch the 142 hub spacing and give up on belts.
…I ride my bike on [ zee-road ] ?
or
…while at the convent, nuns get [ zero- dee] ?
Traditional? High and low levers?
My levers are long/short, close/far, or front/back, not top/bottom or up/down. Traditional to me would be long/close/front lever moves to low gear, short/far/back lever moves to high gear. And even if I look at it from a lower angle, like along the top tube instead of from where my eyes would be when riding, the short/far/back level is definitely _lower_, and that's the one that shifts to _higher_ gears, while the long/close/front level is _higher_ and that shifts to _low_ gears.
Not sure where this idea of "traditional" being low/low and high/high comes from.
Also in my book small/boutique/weird companies get judged differently for cost.