hillzofvalp wrote:With this size wheel high voltage doesnt make a lot of sense... Especially with 9.3kv motor. I don't want to go too fast and I don't want to deal with hIgh voltage in general. There is also maybe enough room for a single 26650 cell.. I have 100 cells in there.
zombiess wrote:OK, here is the data I collected at the different voltages. I think this is about as clean of data as I'm going to get without using a cycle analogger. I reprogrammed the controller so position 3 was 100% throttle which is where all my testing was done. What I did was make a pass in one direction in a mild tuck until the amps stopped dropping, then turned around and made the pass coming back staying in the same tuck position and averaged the 2 results to help eliminate error from any grade on the road. After each pass I added another 6S 17AH pack in series to the ones already there, that's why you see the voltage dropping a little each time. I didn't want to do a full recharge for this and figured the data was still relevant since the start voltage was given.
It's hard to tell exactly how much sag I had once I was at speed because of the surface charge of the cells burning off but typically on a 125V pack that settles down to 123V I'll see around 3-4V of sag going 55mph. On the 49.9V pull I saw about 0.3V sag at speed I think, it might have just been the surface charge dropping.
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volts Unloaded MPH Unloaded Amps Loaded MPH Loaded Amps
49.9 28.0 1.7 24.5 18.5
74.5 41.7 2.3 36.1 32.6
99.0 55.4 2.9 45.9 44.6
123.5 ??? 3.3 54.8 60.1
I need to do the cap mod to get the CA to read higher MPH for the unloaded speed but you can probably predict what it is from the previous data points, based on the data it should be 69.1 MPH since there is a 13.7 MPH difference in unloaded speed between the other 2 data points.
Wheel size is programmed for 1612mm which is what I had to enter to get it to match my GPS speed to within 1mph. Bike plus me weighs in at 270lbs.
hillzofvalp wrote:. I'm very sorry if someone publicly scolded you about how to behave.
nicobie wrote:hillzofvalp wrote:. I'm very sorry if someone publicly scolded you about how to behave.
No worries hov, John is just being John (which is fine by me).
I get this all the time, and could care less about it. Gotta have a thick skin.
gensem wrote:If it was me with a "problem" that was found not to be a problem I would also clean my posts to avoid confusion later bogging down Zombiess sales.
Hillofzval sometimes John tone looks a little harsh but he is really a nice person.
hillzofvalp wrote:Im only getting to about 40mph on this setting. Idk if thats in line it's what you'd expect.
I will work on zombies thread this weekend when i have a moment.
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