Ride went fine, but the RC LiPo has more voltage sag than the main pack.
So it doesn't accelerate as hard from a stop as with the main one.
It's only half the capacity of the main pack, too, so maybe it would be better in 3P or 4P, so I will try that later once I get more packs repaired and tested.
Anyway, I only went around the block, so here's the numbers:
1m 49s trip time
-A peak Regen
The CA odo also rolled over to exactly 2400 miles as I finished.
I forget now what the total is, but I think that's well over 3500 miles now total on the frame, though many things have changed on the bike during that time.
I recharged it using the bulk charger used for the other pack, which is the same desired terminal voltage.
Then last night I went off to work, which including all the roundabout ways I had to get around freeways and non-thru roads was a bit more than 13 miles, and took a bit less than an hour. Most of it I was able to stay at 19-20MPH, but there were quite a few stops/starts, and a couple places I had to go down to around 15MPH or less because of road conditions I couldn't see from the google maps satellite pics I used to review the route with beforehand. Some of those areas are in terrible shape, where even the patches over the potholes had partly or mostly disintegrated.
Thankfully there was almost no traffic at any point, so I didnt have to ride in the sometimes-unnavigable righthand edge of the road, and was able to mostly just take the lane. Other than the road conditions, it was pretty uneventful.
I changed my mind about battery use, and decided to use the ammo-can RC LiPo pack as far as it would take me, down to what should be 80% or so max discharge. At the ~1C rate I was typically using (~450W cruising, voltage sag down to anywhere from 56V at teh start to 50V at the end, during cruise; worse when accelerating), that would be about 49V or so, for 3.5V/cell, if I figured things right.
It ended up only taking about 69% of capacity to get there, though. So at a guess I could get ~15 miles range out of this pack, maybe a bit more, down to 80%, for a pack steady-state LVC of 49V. Due to voltage sag, the actual LVC can't be at that point, because it dropped to 48.8V even at the 69% SOC, during startup conditions. At a guess it'd have to be 44-45V actual pack LVC, or 3.2V-ish cell-level LVC.
I had some other thoughts, but was interrupted by doggies, and now I don't remember what they were.
So now trip data, outbound, using the 14s2p RC LiPo pack:
49m 50s trip time
6.931Ah / 7.0444Ah
-9.61A peak Regen
Homebound trip, using the main pack. Trip took longer because I missed a couple of turns that looked a lot different at dawn than they had at night, and had to go around some things, and backtrack a bit once. Was still pretty empty on the roads, though the road conditions were a bit better southbound than they had been northbound, and I could see better to avoid damaged parts of the roads, too, so I was able to maintain better speed.
55m 27s trip time
6.796Ah / 6.9205Ah
-9.696A peak Regen
Interestingly, even though I accelerated harder with stiffer voltage during accel, took longer, rode further and faster, I used less Ah and only a tiny bit more Wh (because the voltage didn't sag as much).
It might be the number of stops/starts, but they seemed similar. Didn't count them, though, so I don't know. Might be wind or slope, but I didn't notice much in the way of wind either way, besides that caused by riding.
EDTI: OH, now I remembered what I was thinking of earlier. The taillight wasn't working when I got home, but it had been when I left work. So somewhere in the 15 miles it stopped, but I dunno when. What I found after tracing the wiring was that the cord from the laptop adapter that's used to boost the pack voltage by 19V was cut thru, probably by the chain, as the zip tie had disintegrated that held the cord in a bundle to the frame.
It had very obviously shorted during the cut-thru, as both ends were blackened and melted, and I figured the adapter was toast...but after splicing and powering on, it still works just fine.
I guess whoever made the crappy Averatec laptops didn't also make their AC adapters!
So taillight was at least an easy fix. At least the failure happened in daylight, rather than at night, but at night I would have at least noticed it (as it is bright enough to light up stuff beside and to the rear of the bike for some distance; easy to tell if it's on or not just looking in the mirrors).