Ebike controller shunt mod. 5 inches - as measured from the underside of the PC board.

Ebike controller shunt mod 5 inches - as measured from the underside of the PC board. And I added 2. I am using 52V, a temp monitor and a peek gear. Does anyone have experience with shunt modding these? How much power can they safely handle? Anyone know how many fets do they contain? Edit: Opened it up, contains 12 fets. This is the original Sur Ron. You need to use a 40 watt minimum soldering iron. 99 Get it as soon as Saturday, Mar 1 Jul 30, 2024 · This comes factory-calibrated and is directly related to the motor type your e-bike has. Jan 12, 2023 · Finally attempted the shunt mod on my ebike. LCD instrument line 2. It has 2 shunts on it and i want to add some solder to make the controller do 50Amps but I am unsure if I just do 1 shunt or both and how much solder to add. I am pushing 50 battery amps and 100 phase amps through this with a shunt mod and it only gets a little bit warm. I bought all new mosfets for it, looking for someone Apr 4, 2012 · The controller was fairly cheap and I had problems from the start with it until a resisitor was soldered across the C20 which then made the bike rideable allbeit with hardly any power. I'm finding a dearth of information on medium-term reliability of shunt mods, which is kinda worrying. Free delivery and returns on all eligible orders. However the only reason I believe for it to be limited is not really based off what Amazon claimed it to go (which was max 37 mph) but just actually based off other e bikes that have similar features like the Grizzly (52v dual battery/dual motor 2000w) and a couple of other dual motor ones I added a bit of solder to the shunt. 5mohm equivalent resistance. Das Ebike und Pedelec Forum. Jul 31, 2020 · Hi guys, I have a cyclone middrive kit from Luna Cycle which came with their 40 amp motor controller. Tuning. My watt meter maxed out at 23 amps before I modded the shunt. The bike didn't even accellerate quicker. Mar 8, 2010 · Wow you got 42A without a shunt mod, that pretty good. Basically by reducing the resistance of the shunt inside the controller, you can trick the controller into putting out more current. battery + 14. If you're running a 35 amp controller now on 52v you push over 2000 watts hot off the charger. By doing this you're reducing the shunt's resistance, therefore tricking the controller to allow more current to flow through (and thus more power!). Elektrofahrrad Diskussionen. Next we are going to look for our shunt. Thank you for the ideas and infos. It takes a few seconds before the full power is available after I completely turn open throttle, like a smooth fade in. After the extra battery was installed, it now climbs the same grade over 20 mph, and is a lot more fun to ride. Since the mod I have seen a peak of 57 amps. 5V Rated Power: 500W Limit Current: 30A 48V-64V 500W controller function: 1. I've ordered a cheap 72V controller to try on it, but am thinking about modding the shunts on the 48V one I have now. Controller and LCD3 display for instance, should be less than 100 bucks. the controller has a maximum amperage rating and if you place just a bit of solder on the shunt/shunts it throws off the resistance values and allows for the controller to pull more current than it should. I need your help. Sep 7, 2011 · Regen currents are limited by the controller, but even the programmable ones I've had, just have 2 settings, high/low, but with my high speed wind motors the regen current limits didn't apply enough braking force for my taste even on high. I wanted to know if any cheap ebike controller can be modded with new FETS and the other few things that need doing Shunt etc to get the same results? If we solder the shunt, we lower it's resistance, allowing it to pass more current for a given voltage drop. It's possible to calculate other values like 45, 0r 60A. Nov 22, 2006 · The shunt mod is the same for both styles of controller. I think I will keep it at 60v for know. will the battery controller limit itself to 40A? or will it just run until the smoke comes out? Sep 25, 2024 · How to shunt mod any escooter or ebike controller as a top speed hack for every electric scooter and ebike. If the connectors don't match, you can cut the wires and solder on your old connectors. Dec 26, 2020 · Can a shunt mod be performed in reverse; as in: make the shunt thinner such that max amperage drawn by the controller is less? my controller is capable of 150Amps (DC battery current) but my current battery can only handle 70A (will upgrade in the future). It takes me 4-5 hours to do everything resulting in 18S 50+ A capable controller, a lot like the one posted in August. Mar 3, 2022 · how to decrease or increase the amount of amperage you allow your controller to use. More power translates to a little more speed because you have more power to push through the air or up a hill. run the motors at a higher voltage (needs a new battery and controller, may decrease life of motors) replace the motors ($$$) Also, keep in mind that in the state of Tennessee it is illegal for an ebike motor to provide pedal assist beyond 28 miles per hour, or on bikes with a throttle, beyond 20 mph. Jan 21, 2023 · this video is to show you how to do a shunt mod on your ebike controller for more power, a free upgrade. My son upgraded to a whole new set up and I was wondering if anyone on here could rebuild the controller so I can use it on another build. You'll need to identify each connection on your current controller, then source one that has the same connections. 8"(rear) and 3" tires (ftont). Electric speed controller shunt mod tested on a i Upgraded my e-bike and not it has 2 times the powerThis is not a tutorial video but if you would like I could make one. People report a boost in power, then they either say the controller's died or they disappear. Bafang 3000W 60A Shunt Mod In Stock Now Call us now for the best deals and service in Australia 1300809840 ⁣⁣ Bafang 52V 3000W BBSHD Mid Drive eBike Conversion Kit With eBike Battery Options⁣ Not For The Faint Hearted!⁣ Shunt Modding the KT Controller for experimentingNot a Stock jetson Controller Nov 16, 2019 · Basically this mod is like the "soldering the shunt" modifications of common shunt-current-sensing controllers; it makes the controller unable to measure what's really happening, so it can't protect itself (or other system components) from overcurrent. The difference in torque is noticable. QOONESTL Brushless Motor Tester,Electro Car E-Bike Scooter Brushless Motor Controller Tester Included 9V Battery,24 36 48 60 72V $11. 5Amp on my display but that could have been because there was no resistance. Suit yourself. This is under the mezzanine board, which needs to be removed to get access. Show a pic of the shunt you modded so we can see what/where went wrong. A shunt mod will increase the current the controller allows to flow. 25" x 0. Thanks for watc The hassle is finding a controller with the right connections and connectors. I reused a 5 mOhm shunt resistor from a dead smart-BMS, and soldered it on top of the two other on the backside of the controller. The shunt mod is done to a e-bike controller that is not progra The shunt mod just increases the amount of amps that can flow through the controller before it thinks it has reached its max. cruise 4. It has pads for 3 shunts, but only 2 are used. Everything works, so currently my BBSHD is running 15S 45A, and the boost is certainly noticeable! I Feb 6, 2025 · It seems that the simple shunt mod is for about 50A. On one hand, the electronics inside are vastly overbuilt. A "shunt mod" refers to altering a controllers ability to sense a pre calibrated voltage drop across two points. Dec 20, 2020 · Again, there are several displays, all pretty much state of the art, and they are used to set up the controller. Using a small amount of solder should be fairly safe. 5ah. Maybe I just need to upgrade the controllers for ex. 19kW Motor an Kelly KEB 20kW Shunt-Mod 220A@88,2V Controller. I made the mistake of testing the controller outside of the case just hooked to the bike, I only read . I'm hoping to bump Feb 27, 2024 · (Code Savings Changed! Down to 5%) "max10" ($125 Dollars) https://bit. In this video, I demonstrate how to "shunt mod" your ebike. Sometimes they are short, sometimes they are tall. Ask a local e-bike shop for assistance. Feb 5, 2025 · and doing “shunt mods” to their controllers in order to bump up the amperage to the hub motors, in order to get more power to the motors to produce more speed from the bike … I am hoping to speak to those here who have done a “shunt mod”, and hopefully answer my questions … Did you “bend and join”, or did you leave the shunts Jun 17, 2023 · All the shunt mod does, depending on how much you mod it (plenty often double the power) is report lower battery current to the controller than what is actually being drawn - e. Once the controller board was out it's a matter of finding the shunt (a plain metal bar) and adding some solder to it. Pulled board, soldered another 5 MOHM resistor and added some thermal paste between the mosfets and the cover plate. g with a 33% mod when you are pulling 20A it will tell the controller that you are pulling 15A so if you have 30A max set any setting that says 50% current will actually May 21, 2021 · Hi friend. They will likely send you a new controller and let you keep the old one, so you will have a free spare to experiment with. First Prev 2 of 3 Go to Oct 23, 2024 · This is great mod to do on chineese controllers and i have a 15 fet 1kw controller and done few mods like ebs and adding solder to the shunt etc but really want to try it but I dont want to cut the trace and then not be able to solder wire wire to the cut trace. DONOR BIKE is a TREK Marlin 2021 size Large Frame 29erVandervolt Conversion Kit 1500w, 52. This decreases the resistance through the shunt, which makes for a smaller voltage drop which tricks the controller to draw more current from the battery. com/dp/B07MS143 Feb 6, 2025 · It seems that the simple shunt mod is for about 50A. The motor as well but even less so. It doesn't quite have the pickup that the shunt modded controller had, especially when accelerating into corners, but it has more top end, reaching speeds of up to 36-37 mph, whereas the other controllers could only do 33-34. visforvoltage. volts give us rpm of the electric motor, the current gives us the power behind those rpms. Jul 27, 2023 · The shunt mod can be overdone, it is a judgement call. KT does make a smaller 17a controller that I believe will fit in the downtube. The shunt is located on the controller board next to where the negative battery terminal attaches. And you’re probably right. 35 x 3. 12") May 28, 2016 · the controller isn't getting too hot, i guess its just the fact that its solder and its not conducting too well by itself (i think?) so it heats more than the other parts in the controller its like the soft spot of the controller, a shunt full of solder, maybe i could just replace the shunt with a bigger piece of copper or whatever its made of? Mar 3, 2023 · But i was not satisfied with controller in the new one beacuse it cutts out pedal assist at 25kph so i swapt it out for OG one and in the process i opend the controller and thougt that i would do a quick shunt mod for some more power, but the controller does not have shunts like i am used to see. I broke down the time it took me to do it. 4 to 1. Alternatively, you could consider shunt modding that controller. Controller is running surprisingly cool. Only way to check on current draw is to fit a wattsup meter or similar in line with the battery. This was easy enough to do as the circuit board slides out of the casing and the shunt terminations are easy to access. The controller on my mini4 is so accessible that I felt the urge to mod again. Jun 14, 2011 · EBike Technical . Reducing the equivalent resistance by adding another 5mohm shunt, will mean an actual 45A limit (with 30A programmed), and you can of course, add more shunts, to further reduce the total shunt resistance (reducing the shunt value to 50% of standard, means the controller will deliver 2* the current Jul 27, 2013 · just a short video to up the amp on a cheap controller without blowing it up!!fets are 79v 80amp Jan 25, 2015 · if you buy another controller then the chance are you will have to work out the new wiring , but its not that much of a problem to do. 1; 2; 3; Next. Feb 12, 2025 · I have a controller off of my son’s VIvi e-bike. Feb 22, 2015 · The controller is very small, 3cm*5cm*(almost sure)10cm 14A controller. Paid linksHelmet :https://amzn. Look up "shunt mod". I have also a 36v 10ah mxus lifepo4 rear rack battery, and according to internet it has probably very low c rate. Shunt mods are for crude, mostly-hardware, usually six-step, usually sensored only, usually bus current control only, etc. Sep 28, 2016 · It was a blast, better than any other bafang controller I've had. How can I I show you how I shunt mod a e-Bike controller An E bike controller can be modified to pass more amps to the motor than originally designed. I would like to make the shunt in the Das Ebike und Pedelec Forum. motor 16 Mar 16, 2021 · I painted the controller flat black and mounted the controller externally to the rack brace below the seat. Oct 18, 2015 · Its a wise mod not gonna cause no harm Im glad you found a good result your happy with, My next project will still be a scooter evo citi 36v brushless hub motor overvolted to 70v with a ebike controller I found perfect for lifepo4 very wide usuable discharge voltage 72v->40 with a 20s pack good discharge rates a headway 40152 and fast as stink Sep 28, 2016 · Generally I made a plan to sell modded controllers, with all mods done except changing the FETs. STSPIN32F0B controller which outline an advanced single shunt BLDC controller. Sep 28, 2016 · 2. Shunt mods and “don’t want to ruin reliability” are at opposing ends of the spectrum lol. May 18, 2019 · I made a rookie mistake and blew zapped my BBSHD controller, what happened was I did the shunt mod and everything SEEMED fine. So 12a current. Any help would be much appreciated! Do this and your top speed will increase !! 👀 On my other video the controller shunt bypass Increases to The current draw for more torque=Faster takeo Jan 24, 2025 · This one is hard. 17. My controller had almost no thermal compound, fixed that. will the battery controller limit itself to 40A? or will it just run until the smoke comes out? This nb power 45a controller is a perfect controller to do a shunt mod to , it's going on my wife juiced bike scorpion x May 20, 2019 · Shop MAGT Brushless Motor Controller, 36V/48V 350W Stable Less Noise Brushless Speed E-Bike Controller for Electric Bicycle Scooter (Color : Silver). Right now I'm able to hit speeds of about 53-55mph when I have a full charge. It would be more expensive than Luna's 50 A / 14S though. The stock china controller was drawing 15A thus reaching the system's intended wattage and a legal speed of 25 Km/h (27 with newly charged battery but still within tolerance). battery - 15. You will need a main harness extension cable and extend the batter/power wires. org. The controller does seem to run a bit hotter but nothing crazy. Note: the * symbol means factory calibrated. Does anyone have any idea how to get the board out under these circumstances? Howto do a shunt mod on a E bike controller with solder. Unboxing and wire bre Jun 15, 2011 · I've got a 48V controller that draws about 30A and gets 25+mph using a GM 500W rear hub. One wonders if they're happy with the controller's new power so they haven't come back for further technical assistance, or if they've perished in Shunt mod is definitely the easiest mod, but still pretty risky. 05)Today I show you what I did to my Goat Power Bikes Dec 26, 2024 · Hi, I have a spare controller for my euybike s4 so i opend it up just to have a look and maybe do a "shunt mod" ;) But i did not find any shunts or resistors that i am used to see? Does anyone have a clue? I do agree with that. It's pretty great though, way more torque. 05 mm ; 0. If I do a 50A mod. Shunt mod coming up. The ebike manufacturer knows how much current the components can take and the controller is sized appropriately. I also want to give something back to you. how to mod and improve performance on brushless speed controller Jun 28, 2008 · Electric vehicle related discussion, advocacy, and information. The battery, controller and motor. a jump from a 600W to 800W will be fine but stick with a 48v controller if you dont want to alter the speeds and buy the same type of controller i. ca. So I looked into doing a shunt mod Hello everybody. Controller shunt mods Controller shunt mods. Its a fairly safe and esy process, takes less than 5 minutes, and has the potential to triple you Sep 6, 2010 · I shunt modded my controller and tested it without reassembling and literally burned up the original controller (actual flames), but the accelleration was significantly improved before it died. amazon. 99 $ 11 . to/46G2 Nov 12, 2022 · https://www. Your controller measures the voltage across the shunt as a means to regulate current. My e bike has a similar controller. This is done by adding some solder to the shunt, the more you put on the shunt, the lower the resistance, and more current to the motor. I tried to shunt it and the controller stopped working. Search Connect, Share, Learn, Buy or Sell with Ebike Enthusiasts from Around The World TV Categories - controller shunt mod procedure on a NB power 45a controller. It comes standard with a pair of 5mohm shunts, so that means 2. Adding extra conductors or solder alters the Hello everybody. This will make it easy for us to add our wires. Now my battery has a 40A continuos controller. Here are my step by step instructions for doing what has been reffered to as the "Shunt Mod" on an X-Treme XB500 Electric Bike. Basically, i soldered a small piece of coat hanger wire across the existing single shunt. Being drawn to the electrical side of anything, John likes to experience and of cours Apr 5, 2024 · In this video, I shunt mod the KT contoller of the Wired Freedom to give it more power and test the results on a hill climb. 3-speed 3. Apr 28, 2011 · Yes, a simple but good mod. In effect tricking the controller into thinking Sep 28, 2016 · Ebikes4Real, I just want to verify some info about the SMD type Shunt resistor before I pull the trigger on buying these components : 1 - The shunt resistors are of the 2512 size (6. throttle 11. e sensored/sensorless . Jan 19, 2021 · The controller has a rated amperage of 15A with a maximum of 30±1A. alarm signal 9. I recently performed a shunt-mod for my generic 1000W hub-motor controller. Tricks the controller into allowing more amps because it incorrectly reads the output level. self-learning 5. About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright Feb 2, 2017 · Re: $14. Sep 28, 2016 · Climbing the ladder! Yesterday I finally did the shunt mod. My question is, what upgrades could I make to the internals that might give me an increased level of performance/amp draw whilst maintaining safety and longevity in the controller? (for example changing to higher quality capacitors, mosfets or doing a shunt mod) Nov 21, 2021 · So as it goes I would like to do the shunt mod but can’t see how to get around this issue, I’ve tried to remove the board from the controller housing but the manufacturer has completely inundated the internals of the controller with this goop. Thread starter wesnewell; Start date Jun 14, 2011; Prev. I am happy with the mods I have made and do not have many hours of use to make the call as to whether it was worth it, but so far I'm loving it. I bought all new mosfets for it, looking for someone Sep 19, 2022 · How to mod the 48-72v Cozyel 2000w 45a Ebike controller for MORE POWER!Cozyel 48V/72V 2000W Electric motor controller 45a: https://www. I did notice that the stock caps could handle 60v, but I wanted to play it safe and replace all the 63v caps. The shunt should look like one or more bars of solder that stretch across the board. Mine (unmodified) would climb a minor grade at about 10-15 mph, after shunt mod it would climb almost 20 mph. I'd feel safe shunt-modding this thing all the way up to 70 amps. It was perhaps 40 C° so I think I can squeeze it a little more (the added solder compared to before indicate more than a little) 2nd shunt mod picture . alarm power 8. low brake 7. key lock（ battery +） 13. An E bike controller can be modified to pass more amps to the motor than originally designed and INC How to wire tuck, shunt mod and waterproof an Ebike controller, these techniques will work for most controllers not just the one shown. John Holmes as a number of electric bikes in his collection of hobbies. Oct 18, 2012 · I have a KU63 controller (3 speed switch version) that replaced the defective stoc controller on my eBike. reverse 10. But with my 14a controller my s-lcd usually showed only about 450 watts when voltage was 37v (due to sag). Front motor kits can be found at Apr 28, 2011 · After reading up on controller shunt mods, i opened her up and carried out the procedure. it's quicker of the line and can take hills faster than before. Sep 28, 2016 · I upped one of my controllers to 45A using the shunt mod and I've been running it for a month now with no issues. Really wanting to maintain that as my battery voltage/level goes down, and hopefully hit 60mph top speed one of these days lol. My method is similar to that which is described by "hyperob" on the forum www. Don’t change it if you don’t need it. hall 12. It sags about 2 volts at max amps. Due to the board being recessed in the housing, I think you'd need to completely pull the board out to tweak the shunt. When I did similar on my first kit the mod gave about 10~20% more current, to be clear this mod increases power directly not speed so I suspect what you are seeing is slightly more power given overcoming drag and wind resistance and so giving a slight increase in speed. An ebike controller sends a measured amount of current through the system. Your milage may vary: Aug 20, 2021 · MX02S shunt mod, 3 times more torque and acceleration now. Been ebiking for a years and years, I've never blown a controller that hasn't been shunt-modded. My controller could be opened by unscrewing a few screws. com/Controller-Waterproof-Contact-Rectangula-Equipment/dp/B08MPXPDKM/ref=mp_s_a_1_3?crid=1R8M1CLTKHSIH&keywords=ebike+controller&qid=16683 Oct 24, 2008 · As for whether it is worth it, I think it is very worth it if you have any even minor grades to climb. high brake 6. i probably added too much, i went from 60amps to 97. By adding conductive material to the shunt, you trick the controller into delivering more current. There are no sockets, wires or jumpers on the controller to exceed the speed limit. In my controller there are two empty solder through holes next to each point on the board. FAQ; Foren-Übersicht. 99 72v Sunwin Controller Just switched my 60v500w Sunwin controller (with shunt mod) for a new Sunwin 60v 1500w controller (also with shunt mod) and got a little disappointed: the throttle lag is terrible. Can override the controller circuitry should be provided with hall sensor input is opened and my opinion, though the speed controller on the recreation department. Prior I rode an hour long trip and took out the controller right after to check the temperature. . Nov 16, 2018 · Add a bit try it/ride it & add more if needed to max of 25/30% of shunt, typically solder the rhs leg of the shunt on the v- away from the fets side of the controller. Drill two 2mm holes, and solder in a length of coat hanger wire as described. *P14 – Current limit of the controller: set by the manufacturer; it has a range between 1 to 20Ah. Schnellzugriff. If you are using a eggrider display you can adjust the amp display in the calibration menu. The controllers are available pre wired with Bafang motor connectors - but make sure you are looking at the RIGHT one! Oct 26, 2010 · I have a 40Amp controller from e-bikes. Jan 20, 2025 · There's a lot of threads about this, the best of which is E-HP's, but controllers and displays are not generally intercompatible (different signals, comm protocols, data sent/processed, etc), so you should either verify that your display is a model that is compatible with the *specific* version of the specific controller you are buying, or buy the controller and display as a set at the same Feb 12, 2025 · I have a controller off of my son’s VIvi e-bike. I located the shunts and put solder onto them as shown in this picture: Shunts covered in solder. Did your speed increase when you added an R005 shunt resistor? My e bike is limited to 25km speed. The phase current doesn’t flow through the shunt though. locate the fault. Bbshd shunt mod. I reduced shunt resistance to fool the controller into allowing higher regen current. Search form. ebike controllers where the original shunt is often just a piece of busswire bent into a specific length. Sadly I felt no effect whatsoever. Show results from selected filters below: Sep 28, 2016 · Just getting the motor apart can be a challenge. A shunt modification disables the ability of the controller to measure the amount of current moving through the system. Sep 6, 2021 · 48-64V 500W controller can work with hall sensor/hall sensorless Rated Voltage: 48V-64V Low Voltage : 42V±0. I can increase the speed with the display, but the controller does not allow it. Sep 28, 2016 · Did the 45A shunt mod. Brand new controller mod to the Sep 18, 2022 · Loading up the shunts with solder will allow maximum current flow, just adding allot of solder to the shunt will negate its ability to adjust the current flow. That's 1. ly/48F43Zk (Final Price: $2,374. kzlu veljsrhgg ydbrzedb jvpzb zbvob sugzo prfmybv qmir tiilqw tetxpl izzlz aaanrve roele icsb uybb