mfj197 wrote: This is also rear drive so doesn't mess with the forks.
That is why they make vanilla and chocolate. Personally all other things being equal I prefer a front hub motor over a rear hub motor. One of the reasons is that I also prefer an IGH to a Derailleur setup. I was surprised to learn the that the IGH could be as light as the 2x8 Derailleur. I will grant you that it has a much smaller range but that range can 'moved' by simply changing a sing rear cog (16-22 teeth). I suspect that a BBS02 and a Shimano 8 speed Alfine IGH would make a very nice pairing ... it would also be about 1.1 Kg (2.5 pound) heavier than the BBS01 and Nexus Inter3 IGH.
mfj197 wrote: I suspect the 1kg quoted by EM3EV for the 10s2p pack does not .... include mounting weight.
I figured to put it in a small bag under the seat. My thoughts are that if I need or want more range then I simply use a seat post rack to temporarily hold my HEAVY Golden Motor 36 Volt 12 Ah battery pack and move the connector cable. The 4.9 Ah pack under the seat then becomes a reserve. Than could make for a very good range.
mfj197 wrote: ... a Shimano Sora double chainset / bottom bracket at 855g total (compared to the Sunlite in the spreadsheet at 1,600g) ...
OK, I admit it. Between all the marketing hype and acronyms I was getting frustrated trying to sort out which FSA crankset and BB combinations would fit in a standard 68 mm wide British treaded frame. The Sunlite was a convenient
alternative somewhere between the ultra expensive featherweight FSA Carbon fiber crankset and the ridiculously heavy Sunlite steel option (and I knew it would fit
). I think that the FSA Gossamer Pro might be a valid alternative as well. Both it and the Sora come in closer to 900 grams with the matching bottom bracket.
mfj197 wrote:However the weight of a Q75 front hub is only 1.2kg
I rejected the Q75 because it is a sensorless and only 200 watts.
mfj197 wrote: ... use Vittoria Voyager Hyper 32mm tyres) ...
I like the low resistance tread pattern as well. I used the Kenda because I just happened to have new one near my scale. Thank thee
mfj197 wrote: Take off the mirror and you'd save another pound on that.
One has to make allowances for self preservation and in my neighborhood the mirror is an absolute necessity.
mfj197 wrote: (By the way, I'm not sure what your "Remove outer chain Ring from Crank set)" saving 100g is - and it's on all versions, including the Bafang which doesn't have an outer chainring)
It was intended to be a lazy way to get to a single speed crankset for the IGH. It is included in the BBS01 version because I screwed up.
mfj197 wrote: ... a BBS02 (which needs 48V batteries).
Actually I believe it is available as a 36 volt unit as well.
Seems that I need to do some work on my spread sheet.
Does anyone know what the actual weight for 36 volt 15 Amp Square Wave controller is?
Recommendations would be appreciated.