Tin Pot
Guru
You'll never know until you get outside.I just want to do 10 miles as fast as I can ,
Borrow an actual bike and do a local 10TT. it's great fun, and you *will* ride harder than you ever have indoors.
just wondered if it's better to spin , or push a bigger gear slower .
This is not the same question as choosing to measure your training by cadence or power.
As others have said, power is the best measure of your training.
Using higher cadences to achieve the target power during training does seem to make it easier to achieve and repeat. Come the time trial though, there is more flexibility in doing the cadence your body happens to want, but again, as long as the power output is right.