hillzofvalp
100 kW
argghhhhhhhh jealousy
hillzofvalp said:argghhhhhhhh jealousy
hillzofvalp said:could I borrow it?
But seriously take a caliper to that thing to confirm the dimensions. I want to have my swingarm modified whenever I have the moment. ANd verify the axle flats are not coincident.
hillzofvalp said:Shit you scared me when you said 1.4meter wheelbase. The mb-5 stock wheel base is 1.21m. I had planned to extend it 60-90mm. Think ill be okay with all the 70lb battery weight up front? At 20kW?
gensem said:but get a stop and go flooded trafic in summer...
Here the CA V3 can help you out - upgrading to a thermistor hooked to the V3 will allow the V3 to increase current limiting with increasing temperature to prevent Bad Things from happening... As you say - it's best to avoid having things get to the point where this feature would cut in, but...John in CR said:If you do a lot of heavy traffic stop-n-go riding be sure to connect the thermistor switch to some kind light or audio alarm, and if you ever trip it, then consider swapping out that thermistor for one that can give you temperature.
...
While bogging a motor down to a stop or very low speed on a hill is the worst thing you can do to a motor, it's quite obvious when you do it and easy to avoid. Hill climbing itself is quite easy, and as long as you aren't already pushing the stator into saturation, then all you have to do is know the minimum speed you need to be able to maintain.
teklektik said:Here the CA V3 can help you out - upgrading to a thermistor hooked to the V3 will allow the V3 to increase current limiting with increasing temperature to prevent Bad Things from happening... As you say - it's best to avoid having things get to the point where this feature would cut in, but...John in CR said:If you do a lot of heavy traffic stop-n-go riding be sure to connect the thermistor switch to some kind light or audio alarm, and if you ever trip it, then consider swapping out that thermistor for one that can give you temperature.
...
While bogging a motor down to a stop or very low speed on a hill is the worst thing you can do to a motor, it's quite obvious when you do it and easy to avoid. Hill climbing itself is quite easy, and as long as you aren't already pushing the stator into saturation, then all you have to do is know the minimum speed you need to be able to maintain.
gensem said:John do you think you would be able to get the motor parameters from the manufacter so we can play with ebikecalc simulator?
Im asking because the simulator is telling me that I ll reach 90kmh in under 4 seconds (19" wheel using 24s lifepo4 and 160 amps) is that close to real?
Are you making sure to include losses? What do you have for efficiency of the motor at those power levels. If its 94% at 7kw then its WAY less then 94 at 20kwgensem said:Haha... i found what was wrong... (the results were too good to be truth).
I filled the weight like It was kilograms not lbs..
Right values now:
for 275lbs it predicts 0-90km/h in 6.5sec
for 385lbs it predicts 0-90km/h in 9,4sec
I think we only need motor resistance and no load current to have a somehow accurate result.
gensem said:Haha... i found what was wrong... (the results were too good to be truth).
I filled the weight like It was kilograms not lbs..
Right values now:
for 275lbs it predicts 0-90km/h in 6.5sec
for 385lbs it predicts 0-90km/h in 9,4sec
I think we only need motor resistance and no load current to have a somehow accurate result.
Arlo1 said:Are you making sure to include losses? What do you have for efficiency of the motor at those power levels. If its 94% at 7kw then its WAY less then 94 at 20kwgensem said:Haha... i found what was wrong... (the results were too good to be truth).
I filled the weight like It was kilograms not lbs..
Right values now:
for 275lbs it predicts 0-90km/h in 6.5sec
for 385lbs it predicts 0-90km/h in 9,4sec
I think we only need motor resistance and no load current to have a somehow accurate result.
Did you add wind resistance?
Im excited to see this motor ripping and I have a feeling its going to be fast but I would like to see more building and less bench racing. I know Im one to talk but Im to buisy/pour to order this motor.
gensem said:Haha... i found what was wrong... (the results were too good to be truth).
I filled the weight like It was kilograms not lbs..
Right values now:
for 275lbs it predicts 0-90km/h in 6.5sec
for 385lbs it predicts 0-90km/h in 9,4sec
I think we only need motor resistance and no load current to have a somehow accurate result.
John in CR said:I'm not going to put too much effort into it, because what I say is often doubted around here, because it seems too good to be true. That's why I posted the cash prizes offer, to reward those who show faith early and share their results, and prove that I haven't stretched the truth or overstate expectations.
John
xenodius said:John in CR said:I'm not going to put too much effort into it, because what I say is often doubted around here, because it seems too good to be true. That's why I posted the cash prizes offer, to reward those who show faith early and share their results, and prove that I haven't stretched the truth or overstate expectations.
John
I think that if I do end up using a sinusoidal controller like I hope to, Minimonster will live up to it's name and more. A well built motor and a smart controller is a great recipe for efficiency-- and power!
gensem said:Had to come home and a take a snap... it looks so tinny near my older wheel.
I think it ll look awesome in mate black.
hillzofvalp said:mmmmm that is the one. Should I vent it before running it at 20kW with a 180lb bike 195lb rider?