Mission Control the maths is hurting my head - smart feature

[DuncanDoughnuts]

Ok .. so I have set my wheel size to 2000 (cause I often swap between wheel sizes - 650b) but this weekend I'm riding with my 29er wheels. (2250)

Ok, so I would like to try the smart feature on the specialised app ...

The route is 30km and 900m elevation and I want to ride it with my 500ah battery .

So there is 11.2% difference in the wheel size So does that mean to make sure I finish the ride with about 15% battery I should add say 15% extra to the 30km to compensate that I am running 29 wheels when the bike is set to 2000 ?

So on smart control ..

Distance :35
Elevation:950 (to be safe)
Remaing battery: 15%

Ok now my head hurts again .

 

[Zimmerframe]

If it thinks the wheel is smaller than it really is, then it will think you've gone less distance than you really have .. just imagine the wheel circumference laid out on the floor in a straight line ... 2meters or 2.25 meters .

So if you actually wanted to go for 11 km's as a ride. Then at the end, it would think you'd only done 10km's and it would in theory be calculating to make sure it had enough for you to go another 1km.

Therefore you could either reduce your left over battery to 5% at the end, or put in the overall distance you want to go as 10% less than it really is. 27km's for example.

 

[DuncanDoughnuts]

If it thinks the wheel is smaller than it really is, then it will think you've gone less distance than you really have .. just imagine the wheel circumference laid out on the floor in a straight line ... 2meters or 2.25 meters .

So if you actually wanted to go for 11 km's as a ride. Then at the end, it would think you'd only done 10km's and it would in theory be calculating to make sure it had enough for you to go another 1km.

Therefore you could either reduce your left over battery to 5% at the end, or put in the overall distance you want to go as 10% less than it really is. 27km's for example.

In this case the wheel size is larger than it thinks it is.... so add the 10%?