Ordered my Magic pie KIT 17-11-2009 Netherlands

[e-lmer]

JazzJerry;

I saw a neat hack somewhere that used a magnetic
reed switch epoxied under a small steel plate.

You put the switch somewhere, then place a magnet
on a string on it to enable your "turbo mode."

Instead of a physical switch they can see, you have an
almost invisible switch that you pull off and pocket
when you dismount.

It's not a bad idea for a lock switch too.

[Jazzjerry]

Thats a good idear as well...... Might use it.

But for now this will do.

Good idear though.

[eric.nl]

29 dec 2009

Also started on some soldering. The shunt resistor from the cycle analyst is a stand alone version and needs to be positioned between the battery and the controller. I liked the idear of having the cycle anayst pluggable so I can choose to ride without or even use 1 cycle analyst on more then 1 bike. So I soldered some high Amp connectors to the Shunt resistor so I can either ride with or without the cycle analyst.

To be able to do this I bought 4 connectors. Bat wire-Connector-Connector-Shunt resistor-connector-connector-power wire going to the controller.

So now I can loose the shunt and connect bat and controller without it by simply plugging in.

Hi Jeroen,

Nice job you did there with the cycle analyst,

I have a question: where did you buy those high amp connectors you use? the are the same as the connector on the battery, or not?

[eric.nl]

Hi,

I found out that the Battery connectors are called "Anderson connectors SB50".
The are not commenly used in Europe, but you can buy them at Ebay.
Now I am looking for a local store were I can buy them 

greetz Eric

[Bikemad]

Eric,

Try local model shops first, or a Google shopping search for Anderson Powerpoles if the model shops don't stock them.

Alan
 

[Jazzjerry]

Hello Eric,

I bought them from Besli.nl they are a local shop here in Arnhem and I just went by and picked some up. They don't fit the plug from the battery but look identical though.
You should have aske on the dutch www.naafmotor.nl forum. I am on there a lot more.

[Jazzjerry]

O.k. some of my latest specs.

27 03 2010

Fastest speed I did with my 48v 12ah GM battery and the pie is 52,1 Km/h But this is downhill with wind in my back.
Typical top speed on flat is about 38 Km/h

Max load I read of my cycle analyst going uphill with a fully charged bat is 1200 + watts

I live in a hilly area and if I go flat out I can do about 25 km untill the BMS kicks in.

I pull about 10 AH from my pack when fully charged until BMS kicks in.

In my area the pie uses 1 Ah every 2, something km

Still very happy with the bike and the pie though.

Remarks......

My pedelic mode and sensor that normaly does not function and has refused to work when I want it to, suddenly kicked in while peddeling a bit. I thought my throttle got stuck somehow and this scared me a bit. But after peddeling some more I realised the pedelic sensor suddenly started working.

I don't know how and why it suddenly worked, today tried it again and does not work anymore.

Other problem I found was the idear of having a preset potentiometer as a limmiter for when I see cops. Whith the throttle closed the voltage from the throttle signal drops below its typical 1v no throttle signal when I engage the preset potentiometer switch.. This makes the controller think there is something wrong with the throttle and gives 3 beeps. From there on the throttle stops working.

So this simple speed limmiting idear is not fully functional at this point.

[Hardcore]

about that pas, have you done something with cruise control button while it kicked in? I thought you needed to press it twices or am I wrong?

[GM Brazil]

I have the same numbers!  But I got faster downhill, maybe 'cause my wight I got 58km/h max, at flat terrain the max is close to 38km/h too and 25km range. I did not tested the Ah total battery consumption yet 'cause I do not have an external battery to keet the information, when the BMS kicks out I lost the data .

I need to buy a small pack to feed the wattmeter and have a complete reading too.

[Bikemad]

Other problem I found was the idear of having a preset potentiometer as a limmiter for when I see cops. Whith the throttle closed the voltage from the throttle signal drops below its typical 1v no throttle signal when I engage the preset potentiometer switch.. This makes the controller think there is something wrong with the throttle and gives 3 beeps. From there on the throttle stops working.

So this simple speed limmiting idear is not fully functional at this point.

Fitting another preset potentiometer as shown should cure that problem:


Alan
 

[Jazzjerry]

I did use the cruise controll a couple of times before that happened yes.... But just as the normal cruise controll function. I didn't press it twice. When I press it twice I hear a beep. Which should indicate that the PAS is working. But it still does not....

Maybe I did accedently press it twice and somehow the sensor did work for a while... I don't know.

When I get the time I might try the simple throttle restrictor mod No-2

[Hardcore]

try pressing the cruise twices while pedalling on the bike going more than 5km/h maybe that should do it

[Jazzjerry]

Will try that in the coming days, and will let you know if this works.

JJ

[Hardcore]

I'm not an expert on these thing but I have had all the problems you can think of.

Throttle malfunction, cruise, regen braking, battery led gauge, short wires, broken connector, PAS problems.
You name it I have had it

[GM Canada]

So Please think along with me......



Ow NO... Just realised I need a resistor in between there as well...
But still I cant get a grip on how this will work........

What is happening here with just 1 wire diverted from the main wire feeding the controller going into the cycle analyst....
I cant bend my mind around this one......

And where do I posoition the switch to still have both options available. Throtle through cycle analyst and throttle straight up to the controller.... ?? If I would place a switch just before the diode would that do the trick?

 

Just curious what colour wire is the throttle signal wire coming from the GM throttle? I want to add the resitor and diode but not sure which colour wire to add it to.

Gary