My controler is from 2021 so is this the case. As I have written back when it was 48V I had to cut green wire to unlock it.
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Sur-Ron - New Mid drive Bike
- Thread starter Allex
- Start date
ismailkho
🧲 New user
I just entered the serial number in the space for VIN on the registration form. In the space for "special features" I put "electric".
DMV system apparently doesn't support dashes or spaces in the name so the registration shows the manufacturer as "SURRO"
When applying use SURRON for the manufacturer and LIGHTBEE for the model.
I also incorrectly stated you don't need a motorcycle endorsement on your driver's license. You do. Either M1 or M2 is required for a moped.
Maximum speed allowed is 30mph. 2hp max power. We're bending the rules a bit here but in EP mode it's pretty close. Also the power input to the controller will be quite a bit more than what you get at the wheel.
Looking for an exciting outdoor activity? Try adult-size electric dirt bikes! We've chosen the top models designed to provide you with an adrenaline rush and a thrilling experience.
DMV system apparently doesn't support dashes or spaces in the name so the registration shows the manufacturer as "SURRO"
When applying use SURRON for the manufacturer and LIGHTBEE for the model.
I also incorrectly stated you don't need a motorcycle endorsement on your driver's license. You do. Either M1 or M2 is required for a moped.
Maximum speed allowed is 30mph. 2hp max power. We're bending the rules a bit here but in EP mode it's pretty close. Also the power input to the controller will be quite a bit more than what you get at the wheel.
Looking for an exciting outdoor activity? Try adult-size electric dirt bikes! We've chosen the top models designed to provide you with an adrenaline rush and a thrilling experience.
Last edited:
AZeBikeGuy
⚡ Regular
Which state? They are all very different
Quinc
⚡ Regular
- Joined
- Apr 18, 2016
- Messages
- 346
Anyone have any tips for keeping the motor cooled? I drilled some holes in the skid plate and cleaned up the wiring in front of the motor and went with lightest tires I could find. But she still getting hot doing hill climbs. (goes into limp mode at 88c) 72v bac4000 64t sprocket and I am only running level 3 of 5 in Eggrider. Thinking maybe some kind of fairing to direct more air to the motor? Anyone make something like that? Would a 12v fan like a Spal be worth the effort? And should I have it blowing on the motor or pulling away from the motor. 
Any tips would be much appreciated!
Video from my first ride on the bike:
Any tips would be much appreciated! Video from my first ride on the bike:
Regenerative braking is great, smooth consistent and gives back some power too. Variable regen is out there, I bought it but found it less useful than expected. So I am doing something about that, here's a rough video, still a work in progress but it really performs well. Hydregen - A quick video to demonstrate my newly developed regenerative braking control system. It combines hydraulic pressure sensing for the rear lever and speed dependent switched regen for the front lever. This combination works extremely well both on and off road. It delivers a strong, smooth lever force modulated rear wheel braking by combining variable regen with friction braking. Separately, the front brake lever acts like a linked braking control, giving a momentum proportional amount of rear regen combined with conventional front hydraulic braking.
Back in 2017 when Allex first posted this thread no one had heard of SurRon. Now 8 short years later they've taken over the eBike world, and second place is miles behind. There's something very endearing about these bikes that makes owners willing to spend amounts equal to the original price of the bike for upgrades. A whole cottage industry has sprung up around them. The aftermarket for SurRon rivals or surpasses every bike I can think of except Harley Davidson. Every bike manufacturer dreams of having a hit like this. It's hard to put a finger on exactly what mades them so desirable. Besides just being a well designed, and well thought out bike, I don't think it's any one thing, but it's a combination of many. The power and speed of course. The low initial cost for sure, but that doesn't last long as most owners know. I think the small physical size is way up on the list. That seems to allow SurRon's to ride on the streets, and city trails unregistered, and unlicensed all over America judging by all the videos, and that might be the biggest factor.
JamesKHamilton
🧲 New user
- Joined
- Jul 27, 2022
- Messages
- 4
I recently had the BMS on my 2020(I think around there) LBX die, I looked online and a replacement BMS was 260$
plus shipping and tax, which seemed kind of absurd. So instead I bought this
BMS for $73 plus shipping and tax. It barely fits inside the stock battery compartment but with some squeezing it works just fine (my battery is a stock 32ah, idk about the new batteries with the upgraded capacity). There is only one problem with a new BMS, it does not talk to the Sur Ron controller the way the old one does, but apparently, it does not need to. The secondary plug NEEDS TO BE PLUGGED IN but does not need to be connected to a BMS on the inside. If the plug is not plugged in then the power is limited, but when it's plugged in it works exactly like normal but more powerful. I do not know why this is but I assume the bike has some way of identifying if it's plugged in to both plugs. Installing the new BMS took me about an hour and a half but I work on batteries a lot so I knew what I was doing, if you have any questions DM me on Reddit and I am happy to help you out. This new BMS also outputs more power (100 amps vs 90 amps), and you can customize everything: charging voltage cutoff, low voltage cutoff, power output, temperature cutoff, and you can monitor the state of charge and change these setting all via the phone app and provided Bluetooth dongle which you can leave plugged in inside the battery. I have purchased multiple BMSs from this company and they are all high quality and well built, there is no need to run them below spec, I have one that is going on 3 years of age and running at max amps on my 4kw ebike. Overall, if you have some battery skills and want to save close to $200 dollars, use this BMS instead of a replacement stock one. (The power is equivalent to a BMS bypassed Sur Ron but you get all the benefits of a BMS). I hope this helps some of y'all!
TLDR: New BMS has Bluetooth, more power, and more features, and is around 200$ cheaper then a replacement one
plus shipping and tax, which seemed kind of absurd. So instead I bought this
BMS for $73 plus shipping and tax. It barely fits inside the stock battery compartment but with some squeezing it works just fine (my battery is a stock 32ah, idk about the new batteries with the upgraded capacity). There is only one problem with a new BMS, it does not talk to the Sur Ron controller the way the old one does, but apparently, it does not need to. The secondary plug NEEDS TO BE PLUGGED IN but does not need to be connected to a BMS on the inside. If the plug is not plugged in then the power is limited, but when it's plugged in it works exactly like normal but more powerful. I do not know why this is but I assume the bike has some way of identifying if it's plugged in to both plugs. Installing the new BMS took me about an hour and a half but I work on batteries a lot so I knew what I was doing, if you have any questions DM me on Reddit and I am happy to help you out. This new BMS also outputs more power (100 amps vs 90 amps), and you can customize everything: charging voltage cutoff, low voltage cutoff, power output, temperature cutoff, and you can monitor the state of charge and change these setting all via the phone app and provided Bluetooth dongle which you can leave plugged in inside the battery. I have purchased multiple BMSs from this company and they are all high quality and well built, there is no need to run them below spec, I have one that is going on 3 years of age and running at max amps on my 4kw ebike. Overall, if you have some battery skills and want to save close to $200 dollars, use this BMS instead of a replacement stock one. (The power is equivalent to a BMS bypassed Sur Ron but you get all the benefits of a BMS). I hope this helps some of y'all!
TLDR: New BMS has Bluetooth, more power, and more features, and is around 200$ cheaper then a replacement one
I assume the original state-of-charge meter won't work with the new BMS?
It would be nice to figure out what's going on with the secondary plug. It may just be a resistor across some pins that controls the limit setting.
It would be nice to figure out what's going on with the secondary plug. It may just be a resistor across some pins that controls the limit setting.
Wattster
🔋 Established
- Joined
- Oct 31, 2022
- Messages
- 71
Thanks for the write up. Why did you chose this BMS vs a Ant or something more popular? Looking at changing the stock BMS on my batteries for something with more amps as I don't like the idea of a bypassed battery.
Some probing of the stock BMS should tell you if something is jumped inside or if there is a resistors to tell the controller it's plugged in.
Allex
📗 Minor legend
Sure, I use ant BMS with them.
Wattster
🔋 Established
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- Oct 31, 2022
- Messages
- 71
What version/ model! Thanks
3DTOPO
🚴♂️ Mega poster
- Joined
- Apr 11, 2018
- Messages
- 500
The thread will be 6 years come August.
Mine was off of Luna's 2nd shipping container of them. Hard to believe she's turning 5 years old!
I tell everyone that dollar for dollar it was the best money ever spent.
Wattster
🔋 Established
- Joined
- Oct 31, 2022
- Messages
- 71
Started a thread on my controller upgrade in case others wanted to follow along, Surron controller upgrade
Allex
📗 Minor legend
ANy will do I use different depending on the cells. mostly i Use 20s 300A version though. The thin one.
Wattster
🔋 Established
- Joined
- Oct 31, 2022
- Messages
- 71
And they all fit in the stock case? I'm looking to replace my BMS vs doing a bypass on my stock battery
SlowCo
🏍️ Giga poster
stuntmanmike
⚡ Regular
It's the Ebmx swing arm & I love it. It makes this bike so much more stable at speed, I only ride off road. Also it still wheelies very easily but its much more controllable and less prone to flip over backwards. Very noticeable when you climb steep hills or going over deep dirt bike size whoops. Bigger whoops still cause it to bottom out occasionally but nothing like before.
AGS
⚡ Regular
They get seized and crushed by the police in the UK. Too many are used for drug transportation by county lines dealers.
www.yorkshireeveningpost.co.uk
www.gazette-news.co.uk
Leeds police seize electric dirt bike and issue warning over dangerous usage
Police have seized an electric dirt bike in Leeds and issued a warning about the dangerous and inappropriate use of them.
Electric vehicles being used illegally and 'without consideration' seized by police
Essex Police's Tendring team confiscated the vehicles
boytitan
⚡ Regular
There was no competition. Theres a good number of small to medium mid drive dirt bike/ down hill bike hybrids now just a matter of if they take off or not and can meet shipping demands.
Plus sur ron is over priced now due to market share. Only thing worse of a buy in it's class is the Rawrrr mantis which is slower, has less range has worse suspension and costs more. All the other new sur ron rivals look good and I hope they do well.
Forum also had more engagement back then. No one covers new electric vehicles here anymore. Threads to bring attention to new dirtbikes, scooters, motorcycles coming to market die or get 2 replies when there used to be 100 page threads for junk ebay electric grom clones. The facebook page was also a bad idea.
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adarsh krishnan
🧲 New user
does anybody know the front suspension maximum turning angle of surron?
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