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I'm completely new to home trainers but have recently bought an Elite Direto. I was vaguely aware of the need to calibrate the unit and ran the calibration function in the Elite MyEtraining App and assumed that the job had been done.
However, I've just stumbled across a calibration video from Elite which shows a calibration method manually tightening the trainer belt to match the resultant calibration offset value with an offset value written on the underside of the trainer (I haven't looked to see if I have one).
Is this what I need to be doing to calibrate the Direto successfully?
You need to compare the offset value from the calibration process to that on the sticker. If they are close then no further action is needed. The video above is if they are a way out or if you have changed the belt.
Cheers, I'll have a look tomorrow and see. It's new so hopefully it'll be close.
Not if it is close to the sticker number.
If they deviate then contact elite and they might, at that point, direct you to that video. But their current policy is that it's a procedure you should only do under their instruction, which is rarely needed.
I once checked my Direto against my PM pedals and there was a 20W difference. I think the numbers from the calibration app were within 10 of the printed value. Contacted Elite about it and as above they just said don’t do the tightening calibration unless under their advice and not to do it.
They also said I could expect a difference compared to pedals as measuring at different parts of the drive train. Would be nice to get that difference added on to the power to be on terms with those using crank/ pedal systems !
I think I read somewhere the newer Diretos were self calibrating ?
Iirc measuring power at hub on a fairly clean drivetrain should be ~3% lower than power from cranks/pedals.
Gets more complicated if you have a left crank meter and you have a power balance stronger on your right leg.