Okay chance for John to say I told you so. My stair grip tape let go mid ride.
This was about 11km into a shake down ride in 32 deg-C heat. For the first time I heard the motor slip, and thought that weird. Then a sort of flapping sound. Hmmm wonder what that is. Then after riding up a couple more hills, the flapping sound got worse. Better pull over.
Looks like there was too much power, combined with too much heat for the grip tape glue. Resulting in the grip tape trying to take all the shear load itself, and it just let go. Better go seach for John's recommendation for the belt sander material, plus some you beaut glue tape stuff.
Apart from that everything went really well. Motor got warm, but didn't melt. ESC was cool. Bike felt nice and light, and you really don't notice the added weight of the Commuter Booster + batteries. You do occasionally notice that the motor touches the tyre briefly when jostling over bumps.
I rode with two 5s5000mah 20C LiPo's, in a little frame bag. Here is the pic.
Here are the stats from the Watt Meter, for this little 11km ride which is a part of m normal commute to work, including the worst couple of hills.
2179.1 Wp - Peak Power
Here is what the GPS tracked, so you can see average speed, and the sort of terrain.
The good thing about the grip tape letting go, was it provided a nice contrast to having the assist and not, as the last leg home I had to do on my own and included a half decent hill. For the previous hills I was still pedalling, and working up a light sweat but wasn't uncomfortable, even though it was a hot day. But the last hill without the assist definetely had me mopping the forehead.
Ebikes are cool. This system really doesn't have much down sides. It hardly adds any weight to the bike, it has zero impact on the rolling resistance, your bike just feels like it always did. Then when a hill comes up, a little push of your thumb and it flattens out. It makes a bit of a whine to let you know it is working, but the pedestrians I passed didn't turn heads trying to find out what it was. Once I iron out a few more bugs, and bolt this on to my road bike, I think this may just become my main ebike.