Rothar1 said:
windburner said:
The v0.19.0 OSF eliminated my over voltage issue with the 48V battery, but, being highly tune-able, it brings its own baggage, and, I strongly prefer the pedal assist onset performance of the factory FW
Could you explain baggage please?
I'm not sure if you are asking for my definition of baggage or what I meant my its use, so, I give both.
By baggage, I meant extra, not always necessarily desirable, stuff. (If that was all you wanted to know, sorry for the wordy remainder.)
We needed the OSF primarily for the previously mentioned voltage issue of our 48V system which required the fully charged voltage to be lowered by ~0.2V in order to eliminate the over-voltage reaction. Secondarily, the original VLCD6 display only displays whole number increments for the odometer and trip meters, thus, from the display you can't properly answer the question: "How far back was X?". Our physical install space is limited (why the VLCD6 was selected), so when the SW102 became available, offering fractional distance units, I decided to try the OSF with it, and this provided relief for both concerns.
Now for the 'baggage'. The original performance of the factory firmware (FFW) fit our riding needs quite nicely with the four assist levels of the VLCD6. The onset of pedal assist, when needed, is smooth and quick, especially from a 'standing' start, and the walk mode has an equally smooth onset. Assist Level 1 was used for solo and Assist 2 for dual, except when more power was needed for hill climbing. Thus, once converted to the OSF, significant time was committed to tuning back to levels/performance similar to the FFW. Unfortunately, settings are reset with each update to the SW102 OSF FW, so, you can imagine the fun there. While the power output of the assist levels can be quickly matched,
the nice smooth and quick onset of the pedal assist and walk mode, could not be achieved with v0.19.0 FW, to which the SW102 is currently limited. By enabling 'Power Assist w/o Cadence" a quick onset can be achieved for Pedal Assist, but the mere act of mounting the feet to the pedals often resulted in activation, so this is best left disabled, unless a torque threshold for activation setting is available (which I think I read is now available in v0.20.x, as well as the eMTB mode which eliminates the need to switch assist levels), but again, the SW102 is currently limited to v0.19.0.
So, don't take my use of 'baggage' as a hard knock on the OSF, as, it is still installed! We just have to work harder longer when starting out from a cold start as compared to the FFW, and I don't use the walk mode as it sounds like it puts more of a strain on the unit/drivetrain. Both of these are of higher importance interacting with traffic at 4-way stop intersections, especially when mild hills are involved. I am waiting patiently :lol:/looking forward to evaluate the v0.20.0 OSF with the SW102, which promises the capability to eliminating most, if not all, of the 'baggage'.
Our use case demonstrates the capability of the 48V 750W TSDZ2 to handle significant loads, given our
moderate to heavily loaded tandem trike, two up. We have not yet had any heat issues with either the FFW or the OSF, but we are still building our stamina for longer rides. The compact, near hidden nature of the TSDZ2 has shown itself by the fact that we have been stopped for a chat about the 'unusual' trike several times and on three occasions the parting words were something like, "That thing would be even better if you had a motor on it!" :wink:
Lastly, I just received an email from our local bike shop saying that Terra-Trike will offer an e-assist unit for the Rover starting next year for only $2495US+installation. I got a good laugh out of that one!!! I guess we'll buy a whole new unit instead of replacing sprang clutches and torque sensors.
