Connecting Muin Smart Trainer to Garmin 820

[steve@fluidcm.co.uk]

I connected my Garmin 820 Explorer today to my Elite Turbo Muin Smart Trainer with ease. After cycling for a few seconds it became clear the readings were very inaccurate. Average speed 47.3km/h and a top speed of 235.1km/h. I wish I was capable of such greatness but I know I'm not and it's very wrong. Can anybody suggest what the problem might be?
Thanks

[Elite Admin S]

Hi

You have to set the proper circumference value on your Garmin, considering the internal ratio of the trainer.
If your Turbo Muin has a serial number higher than 30000, as I think, you have to insert a value equal to your real wheel circumference divided by 13.2 (for example, if you have a 2100mm circumference wheel, you have to insert 159mm in your Garmin).

Please notice that not all the Garmin models allow to insert a so low circumference value.
If it is your case, contact Garmin directly about this topic.