Forgive me if this is covered elsewhere, but I’ve looked in the obvious places and can’t find it mentioned.
I just bought a new Zwift Hub and can connect to it without a problem. But the resistance on either a ride or a workout feels WAY too low.
I tried some ramp tests by:
- Using my Mac connected the normal way
- Using my Mac connected via the Zwift Companion app (on my phone)
- Installing the Zwift game on my iPhone 13 Pro and connecting to the Hub
None of these made any difference. Here’s what I’m experiencing:
I select Workout, then the full ramp test, and a flattish course. I run the test in ERG mode (selected by default)
I complete the first 5 mins of free riding. When pedaling at 80rpm I reach about 7-11mph and am producing only ~50W. It doesn’t matter which gear I’m in, but that’s correct for ERG mode, right?
When I pass through the arch for each 1 min interval, the resistance increases to what I guess it should be, but only for a few seconds. I don’t rush at this point, I just keep pedaling steadily. But the resistance then drops right down and to get anywhere close to the required watts for the interval (even only 100W) I have to spin at very high rpm - maybe 140rpm. The game tells me to target a steady 80-95 rpm
I tried continuing steadily at 80rpm (at about 50W) through several more 1 min checkpoints. Again, the resistance goes up for a very short time as I pass through each arch, but almost immediately drops right down again.
I’ve also tried spinning like crazy (~150 rpm) to reach the target interval watts, but it’s not sustainable. If I wanted to do this, I’d join a spinning class!
On a couple of the tests I got a message saying that ERG had disconnected. Then the resistance goes way up for a few seconds and it connects again, but is back at very low resistance. I think this happens when I try to increase cadence to match the target watts, then reduce cadence again.
Any ideas what I could be doing wrong? Or does this sound like a fault?
Thanks for your help.
I updated the firmware of the Zwift Hub trainer and it’s now saying up to date when I check
I performed a spin-down calibration
I tried deleting Zwift preferences and restarting the game, plus forgetting and reconnecting to my Hub.
I’m using a 14" MacBook Pro with M1 silicon, running Monterey
My iPhone is a 13 Pro running the latest iOS
Zwift game Version 1.1.2 (1)
I just installed Zwift Companion and Zwift app on my phone, so assume they are the latest versions