Hi Guys,
another question due limited previous knowledge -
Let's say a bike normally needs one MP in normal drive and it's enough for nice driving in flat areas, perhaps with some hills, too.
But now we have big hills as well...and we need more power.
What if we have one MP in rear and one in front - not linked, meaning there is two batteries and two throttles, one for each hub? We drive normally with rear, let's say, and when you get in trouble with big hills you then use front hub as well..? Like in cars, normally two wheel drive, but in difficult conditions four wheel.
Is all this logical, or is there some reasons why this scenario would not be sensible..?
Thanks for opinions or experiences!
I would consider using only one throttle and two batteries with two pies..
Why?
The max current draw of two Pies exceeds may exeed
BMS limit of a single GM pack under a high load. End of story.
A thumb throttle and twist throttle could take too much concetration away from the riders road awarness. The twist throttle and the thumb throttle will be in reverse on the other handle. This may cause cramps and when slowing fast the rider movement opposes the direction of slowing if the throttle is on the left.
EG. I slow down my weight shifts to front and left hand is twisting the throttle to go faster where the right twist the throttle slower.
Very confusing to both slow and speed up with different twisting actions on both sides Im getting dizzy thinking about it. simulate this experience
The American Indian bike has a left hand throttle no one would dream of using a right hand throttle in the same place.
Two with throttles the rider needs to apply both throttles equally to get the right balance on hills.
Your idea is perfect with one throttle as the resistance upon both wheels will balance more evenly on hills than on level grades.
Use the cruise controll button to link Pie 2 to your throttle. It is a simple on off switch that can pass through the throttle signal to your additional hub.
Do join the two battery ground (black) wires as this is the base point of all current.
No need to join the two red controller throttle wires as volatges may vary slightly creating load between each, after the black battery terminal have been joined current origin is achieved and resistance on the white is fine.
Two batteries two MP's and one throttle.
One only needs to connect the two black battery pack wires one black throttle controller wire, one red controller throttle wire and one white controller throttle wire to the throttle harness wires and Split the white throttle output wire and feed the through the cruse controller button to the other pie white wire. at least .6v needs to enter pie 2 to remain on and active. I am not sure whether the Pie 2 can reinitialise after throttle failure or it needs to be switched off and on and again.
This is complicated here.
One voltage supply, one ground relative to two packs and one throttle signal to two MP hubs. Cruise button disconnects Pie two (front pie). And connect both brake positive brake wires can connect to one ground brake wire when batteries grounds are are connected but regen maybe a little much.
So!
You can make the throttle side brake switch be the default switch so when you reach for the brake you naturally release the throttle, the controller switches off on pie 1 and regen for pie one kicks in. The other brake switch can be regen for the other pie if its activated, But his pie should not be active because it will beep three times and induce throttle failure to pie 2.
Oh dear.
Gime a day and I will come up with a circuit and we will get Allan to give us his wisdom here too.
