So with the old C7 what speeds did you do?The first thing that came to my mind after my first ride on my 48V/500W NCM Moscow Plus was "How can I make this bike faster?"
Throttle was maxed at 20mph(32km/hr) and the Petal Assist top speed was limited to 23mph.(37km/h)
I knew the motor was capable of much more to stay within the specs of Class 3.
So I made it my mission to try to find a hack or aftermarket hardware that would run my bike at the sweet spot of 28mph/45 kmh (Top end of Class 3)
I took to the internet to figure out my problem. After hours of digging through the interwebs I came across this thread in a german pedelec forum.
Moin, ich habe bereits im dem 'anderen' pedelec und E bike Forum meine Untersuchung und Ergebnisse veröffentlicht, hoffe aber hier zusätzlich noch weitere interessierte Leute zu erreichen. Zunächst einmal ein Dank an Arthus Dent der schon vor über einem Jahr damit angefangen hat und auf dessen...www.pedelecforum.deCode:
A member by the name of vspadrva made some interesting advances. He managed to use an oscilloscope and logic analyzer to reverse engineer the Das-Kit C7 Display and create code using a microcontroller (ESP2866) to intercept the data being sent through the bikes data cables.
Here's a translated quote of his OP on that thread.
The thread goes on and other smart programmers find a way to change the data values NCM set it place with their custom firmware. Eventually they created an open sourced project on github (which has some cool features)
After reading all of this and checking out the code on github. I had a good understanding what needs to be done to go that route and hack the display.
It wasn't something that I was interested at all to attempt to achieve. Also those german riders had 250W motor kits installed and were only trying to go as fast as my bike already could stock. (Due to speed restrictions in Europe)
So now what?
Something from vspadrva's post stuck with me.
This got me looking at Magnumbikes website.
Low and behold they run the same Das-Kit C7/i5 controller system (data protocol) as my NCM bike but can reach 28MPH!
This brought me to youtube looking up display tuning videos for Das-Kit C7 displays. MagnumBikes has a video posted there.
I watched it and saw the tuning screens (Pedal Assist/Throttle) that my NCM doesn't have in its settings menu. After watching, I starting thinking that maybe the speed restriction data is stored in the Das-Kit i5 Controller firmware. I would be SOL unless I changed the Controller and the Display. But then I saw this image attached on that same german pedelec thread.
View attachment 48098
Once I saw those chips, I knew there was firmware in the displays restricting the speed tuning options. I ordered a Magnumbikes C7 - 5 wire display.
View attachment 48108
View attachment 48099
Got it today, removed my stock NCM display and installed Magnums. Guess what? I can now go 25mph on assist and 23mph on throttle.
Here's a YT video of the new Display and the tuning options it gives my NCM Moscow Plus.
Hope this helps some of you out there wanting to go faster or tune the bike to go slower.
I would like feedback on this too as I have Moscow too.I'm assuming that any of these changes are specific for the Moscow Plus and not the regular Moscow? Any insight on how to increase the speed on the non-Plus version? Other versions of the Das L7 display on similar bikes have a max speed of 28mph. Much appreciated!
Check out the Ncm throttle thread, a few of us have used the Das kit from Australia, i have the normal Moscow and it works fine, you are just left with a spare connection which i just taped up. Here in UK the Max speed seems to be 22mph but it is still far better than the 15mph previously.I'm assuming that any of these changes are specific for the Moscow Plus and not the regular Moscow? Any insight on how to increase the speed on the non-Plus version? Other versions of the Das L7 display on similar bikes have a max speed of 28mph. Much appreciated!
Stock display in UK is limited to 15mph, that's why a lot of us buy the kit from Australia. You can change setting to 28mph but you only seem to able to get to 22mph. The kit from Aus also has a throttle which again we dont have in UK.I am able to get 22mph on my regular Moscow (I'm in the US) with the stock display with pedal assist. I was hoping to get up to 28mph but it may not be possible.
I bought a speed chip on eBay Germany. I have one setting which allows the bike to reach 22mph, which I think is the top speed.