juicy classic modernisation

[mick the confused]

i have bought a 2020 juicy classic, at least that's what the frame number suggests. it has a led screen with three assist levels. i find the bottom assist too low and the middle assist too high. i am used to the finer adjustments of a five level assist and full power throttle on my 2014 biocycle folding bike. i have attached a photo of my controller,
i have read that compatibility with them is difficult. do i need to buy a new lcd display and matching controller. i look at what is for sale and get confused. please help an old man with his cycling. i do not understand electronics but am practical and can solder and will get a new battery for my meter, so i need simple instructions i can follow.
juicy have quoted £180 just for a display and hundreds and hundreds for the whole job which i don't think they want to do.
36v 10a/h battery at the moment, might go to 13a/h. update, now have 13a/h battery and has been sent off for reincarnation
help and advise please
one company has told me that i would need the whole kit including the back wheel " You can't mix and match parts " is this true???

 

[saneagle]

i have bought a 2020 juicy classic, at least that's what the frame number suggests. it has a led screen with three assist levels. i find the bottom assist too low and the middle assist too high. i am used to the finer adjustments of a five level assist and full power throttle on my 2014 biocycle folding bike. i have attached a photo of my controller,View attachment 64187
i have read that compatibility with them is difficult. do i need to buy a new lcd display and matching controller. i look at what is for sale and get confused. please help an old man with his cycling. i do not understand electronics but am practical and can solder and will get a new battery for my meter, so i need simple instructions i can follow.
juicy have quoted £180 just for a display and hundreds and hundreds for the whole job which i don't think they want to do.
36v 10a/h battery at the moment, might go to 13a/h. update, now have 13a/h battery and has been sent off for reincarnation
help and advise please
one company has told me that i would need the whole kit including the back wheel " You can't mix and match parts " is this true???

Labels don't mean very much. You should show a picture of the bike and what's on the handlebars, so that we can be sure that any recommendations fit.

There is plenty you can do to update your electronics to get what you want. You don't need to know anything about electronics, but you would need to know how to solder, change connectors and do a bit of wiring.

Can you show us the wires attached to your present controller as well?

 

[Nealh]

It has a Lishui control system and being three assist levels most likely speed control, one best route is to opt for KT controller kit conversion.

 

[mick the confused]

thinking about attacking this from a different direction. is it possible to fit an lcd or something similar and adjust the settings. if so what one would work
could it be conected to an ipad???

 

[Nealh]

thinking about attacking this from a different direction. is it possible to fit an lcd or something similar and adjust the settings. if so what one would work
could it be conected to an ipad???

Not with a LIshui, typically one needs a matched pair of controller /display as the software differs.
Lishui aren't as easy to pair up like KT . Most KT are generic and a one fits all, where one can mix and match controller /display. The only time KT tend to fall down is when a seller uses custom setting /firmware units or differing connectors.

With other displays they do tend to switch on and one may get PAS 1 to work , sometimes other features may work maybe a speed reading but generally there is an incompatibility issue due to software/programming factors or simply differing wiring sequence.

 

[saneagle]

thinking about attacking this from a different direction. is it possible to fit an lcd or something similar and adjust the settings. if so what one would work
could it be conected to an ipad???

No and no. You need a new controller with an LCD.

 

[Nealh]

I remember many years ago we tried to help out a guy with an issue with his lishui system to no avail so I think he decided to buy another controller from Aliexpress, he hooked everything up but had no joy in the bike working.

As I have mentioned one has to buy a matched pair from the same seller or opt for a KT , 99% of KT stuff is generic and will work.

 

[mick the confused]

" the only time KT tend to fall down is when one uses custom setting /firmware units. "
now there's a sentence that i don't understand

so are you saying that if i buy any KT display and controller they will connect to and drive my back wheel
or would you recommend one that would suit my simple needs that include a throttle

 

[Nealh]

Over the years of much perusing the forum we have learnt that Woosh much prefer lishui, the reason being there is no end user fiddling with the settings .
All programming is done by them using the supplied software programmes they use. these aren't available to the public.

 

[Nealh]

" the only time KT tend to fall down is when one uses custom setting /firmware units. "
now there's a sentence that i don't understand

so are you saying that if i buy any KT display and controller they will connect to and drive my back wheel
or would you recommend one that would suit my simple needs that include a throttle

A company can use KT products on their OEM bikes , there is an option for them to opt for KT custom units which have differing software /features to std generic third party KT units.
Custom software ties the buyer to the OEM seller to buy spares which invariably come at a very inflated price. Sometimes it also means they will reverse the M/F connectors so they also don't fit generically bought items.

 

[Nealh]

Any paired system will drive the motor wheel , all one will have to check is that PAS & speed control device wire sequence of the existing fittings matches that of the new wiring or one simply buys the complete controller kit with all peripherals included. Things like PAS , speed control devices are a few pounds and makes sense to buy them as part of a plug and play system.

Typically the only thing one may need to solder or change connectors is the battery to controller supply wiring.

 

[saneagle]

" the only time KT tend to fall down is when one uses custom setting /firmware units. "
now there's a sentence that i don't understand

so are you saying that if i buy any KT display and controller they will connect to and drive my back wheel
or would you recommend one that would suit my simple needs that include a throttle

I've fitted so many controllers to different bikes and motors that I can't count them, but somewhere around 50. They all worked except one that was an Ezee motor that would only run backwards. Juicy bikes don't have Ezee motors. Instead, they use a standard Chinese motor that will work with any appropriate controller. I told you that we need pictures to ensure compatibility. That's where you should start.

 

[Waspy]

Typically the only thing one may need to solder or change connectors is the battery to controller supply wiring.

Yes but there are many types of adaptors on eBay etc for converting XT60 to bullet connecters (for example). No soldering required. We've never had it so good!

 

[Sparksandbangs]

Some controllers determine the assist level for each step and the display sends a 1 to 5 signal to them to switch between them.

The Lishui dies it differently. The display controls the assistance level sending a number between zero and 255 mapped to output. This can be different for different displays. For example one display may send 30 for level 1 another may send to for level 1.

Some of the displays have settings that allow to change from 3 assist levels to 5 or 9. Yours may have this. It also may work with a different display with the same communication protocol but it also may have been locked down by the manufacturer.

It is one of those things that may or may not work. You might be throwing money away or not.