If it's got belts in it, I'm very, very skeptical of it. The Levo gen 2 & 3 motors used belts and most of their failures...
If it's got belts in it, I'm very, very skeptical of it. The Levo gen 2 & 3 motors used belts and most of their failures (of which there were/are a LOT) were caused by the belts wearing down (especially along the sides).
It will almost certainly have belts in it... from an engineering perspective, it's too simple of a solution to not go after it here. That would...
It will almost certainly have belts in it... from an engineering perspective, it's too simple of a solution to not go after it here. That would have weight, packaging and service cost advantages that will seem like value adds to the consumer in the white paper phase. One of them could wise up and devise a rekluse style clutch system... but I believe that will be too complicated to keep running properly with the tolerances and the fact that these motors aren't just spinning at a semi-consistent RPM to create forward drive.
IIRC, the belts on the levo's were cogged belts more akin to a timing belt on a car/motorcycle. I found it interesting that those failed in the brose motors as they have a pretty decent service interval in cars and motorcycles (ducati's not withstanding).
The problem with belts is that they are subject to stretching and tension issues. It's something that you will chase persistently with belts. I've built a few forced induction cars, turbo and supercharged. On the supercharged cars, I was constantly chasing belt tension and replacing belts mid track day at times. Very annoying.
Yeah they are saying they are ecvts. So no belt. Like the cvt in a Prius or a maverick.
In cars ecvts are extremely reliable (Prius). In part this is because there is no shifting as such. There’s basically one gear (in the sense that you don’t have a moving belt or forks or selector or some other such mechanical contraption) and the ratio is controlled by a secondary electric motor.
So eCVTs have 2 electric motors, and because electric motor control is basically down to a science now, we should expect extremely smooth “shifting” which is why they are saying it can just maintain whatever set cadence you want, or simulate whatever gears you want. Likely far, far better than like ERG mode on your trainer.
Yeah they are saying they are ecvts. So no belt. Like the cvt in a Prius or a maverick.
In cars ecvts are extremely reliable (Prius). In part this is because there is no shifting as such. There’s basically one gear (in the sense that you don’t have a moving belt or forks or selector or some other such mechanical contraption) and the ratio is controlled by a secondary electric motor.
So eCVTs have 2 electric motors, and because electric motor control is basically down to a science now, we should expect extremely smooth “shifting” which is why they are saying it can just maintain whatever set cadence you want, or simulate whatever gears you want. Likely far, far better than like ERG mode on your trainer.
GCN's day 2 - roadie stuff (which, even though i don't ride road, is quite interesting)
In case anybody tries to sell you a Hope V6ti with the serial number 0001 (or filed off), let us know so we can tell Hope about it:
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