whereswally606
100 kW
So today i had a bit of success albeit shortlived. My project is converting an old emax scooter (proud eagle controller) to use a size 4 sevcon. The new ones use a sevcon size2 and Jonescg an Aussie endless spherite kindly sent me the DCF from a newer size 2 controller from his new version emax scooter.
I managed to borrow some software (ahem) from a kind chap i found online who had done this stuff on his chopper at mit. He has a great web page too that help you get the things talking to each other.
And a friend here also lent me use of his ixxat dongle to flash the controller. He too will be going down the same route as soon as i figure out how its done.
Anyway, after getting some 120 ohm resistors for the canbus termination and some fuses for the keyswitch i finally got my old xp box talking to the sevcon size4. Even though its the galvanic protected dongle for isolation i run the sevcon off a stepped up battery (36v b&q macallister).
So this was success stage one getting the canbus talking.
Then i pulled the old dcf file from the controller so that i can put it back if it doesnt work.
then i reflashed the controller with jonescg new dcf file.
that went ok except for a few "cant write 0 to ****, *" lines to the log.
I then pulled the same DCF off the controller to double check and they are not the same.
The new one is a few kb smaller.
I used beyond compare to compare the files and there are some obvious differences and then there are just bits missed out.
i will upload the DCF files as txt (just rename them and look at them in notepad)
View attachment emax orig.txt
View attachment emax after flashing size4.txt
My question to any sevcon experts out there was what did i lose and was it important?
There is a chance that you cant use a sevcon 2 dcf file on a sevcon 4 and there is a chance that the motor on the new emax is too disimilar to the old emax motors for this all to work however i feel that now i can at least tweak the settings in a dcf file that is 90% of the way there i might just succeed.
I managed to borrow some software (ahem) from a kind chap i found online who had done this stuff on his chopper at mit. He has a great web page too that help you get the things talking to each other.
And a friend here also lent me use of his ixxat dongle to flash the controller. He too will be going down the same route as soon as i figure out how its done.
Anyway, after getting some 120 ohm resistors for the canbus termination and some fuses for the keyswitch i finally got my old xp box talking to the sevcon size4. Even though its the galvanic protected dongle for isolation i run the sevcon off a stepped up battery (36v b&q macallister).
So this was success stage one getting the canbus talking.
Then i pulled the old dcf file from the controller so that i can put it back if it doesnt work.
then i reflashed the controller with jonescg new dcf file.
that went ok except for a few "cant write 0 to ****, *" lines to the log.
I then pulled the same DCF off the controller to double check and they are not the same.
The new one is a few kb smaller.
I used beyond compare to compare the files and there are some obvious differences and then there are just bits missed out.
i will upload the DCF files as txt (just rename them and look at them in notepad)
View attachment emax orig.txt
View attachment emax after flashing size4.txt
My question to any sevcon experts out there was what did i lose and was it important?
There is a chance that you cant use a sevcon 2 dcf file on a sevcon 4 and there is a chance that the motor on the new emax is too disimilar to the old emax motors for this all to work however i feel that now i can at least tweak the settings in a dcf file that is 90% of the way there i might just succeed.