Using Merach S29 exercise bike with Zwift but riding too slow

Bugs and Support
1

I’m using a Merach S29 exercise bike with Zwift app on my ipad. Connection is good: power, cadence and resistance. the resistance correctly auto-adjusts according to the route incline on Zwift.

My problem is that in the app I am riding way too slow - way slower than the other cyclists. I set my profile weight and height and FTP. I varied the FTP but I’m always riding too slow in the Zwift app. The values dont correspond to what I see on the Merach S29 bike. For example, I pedal hard and see 20mph on the bike but when paired with Zwift I’m barely getting 10 or 11 mph and the wattage is about 60w.

Any ideas how to resolve?

2

Looking at an online calculator it seems like 60W roughly translates to 11mph-ish for a mid-sized rider. Not sure what weight was set but it might not be too far off.

3

The real problem is that nobody knows if 60W is the right number since that bike is not capable of accurate power measurement. The speed you see on the bike is irrelevant since Zwift only uses power to determine speed and will calculate it differently compared to Merach. Without some kind of proper power measurement, you are in the dark about whether 60W is what you are doing.