Recent content by cg_ebiker

Just thought I'd post this here incase anyone else is having similar issues with an 'Abnormal start' error on an ANT BMS... For context, I have a 24s ANT BMS protecting a 14s2p C020B cell pack and powering a SVMC72150 controller. The bike itself is going to be put through the UK MSVA scheme so...

I'll try these suggestions at the weekend but I've already maxed out the current settings and was only drawing 133A not the full 150. As I have no way of measuring the phase amps I can't verify that but didn't feel like it was giving everything. I also contacted the seller and they've sent me a...

Well I don't actually have the motor sensor wired up and the setting is disabled so that shouldn't cause an issue. I might as well try it for good measure though :)

I tried out the new throttle today, and no difference immediately so I can rule that one out. On the ride however, decided to muck around with the controller temp limits by setting them well over 100. I don't know if this was luck or what, but suddenly I had a lot more power. There's still...

There are two types of hall sensors, analogue and digital. The digital ones are in the motor to provide blips but the analogue ones provide a variable output for the throttle. I believe potentiometers are used in higher end throttles but as I said, I've had hall sensor throttles working before...

Hi Myles, The cheap throttles I have use hall sensors not potentiometers so I can only measure the output voltage, not the resistance. I'll try measuring the output with my meter and see if there's anything weird there, but I have a new throttle on the way today to see if that fixes it. It...

I tried the previous value of 167, and no luck. The motor still spun but still only 60A of current. I also downloaded an older version of the software that has more options for current limiting as I heard someone else solved a simialr issue through that but that didn't help unfortunately. I...

I set them both to 0v, tried both throttles and still no luck. I'm really scratching my head as I can't think what it could be. Only things I can think of are: 1. Bad hall test reading - if I can find my previous value, would it cause any dammage putting this in to try it out? 2. Faulty...

I redid it and got 192. Before however, I had around 170 or so and have even got 5 when running the test before so not sure what's going on there! Would it work to manually put in whatever my previous value was if I can find it?

Ok, got a strange issue here. I've gained a few months experience with Sabvoton controllers whilst building my current ebike (8kw enduro style) and taking it out down the road on test rides. Long story short, my first SVMC72150 died because of my stupidity with the phase wiring but I now have a...

I was going to get Tektro HD-E710 levers for my road legal MSVA build, but there have been production delays and the seller gave me a refund. The only other brake levers I have found that meet the criteria of having ball-end levers and an oil gauge are the Sur Ron LB L1E levers. I already have...

I would use the KTY83 but they've been discontinued so I've done some more testing and found the resistor value should be around 16kΩ but will use a pot to fine tune it. I've found a similar PTC (same as the KTY83) sensor which I will try out soon. Thanks for confirming my theory

I'm trying to add a temperature sensor to my motor to work with a Sabvoton. Does anyone know how the sabvoton temp input works, whether it takes a voltage reading or measures the resistance directly? I've tried connecting it to my bench psu, but 0˚C is at 0.24v and 100 is at 0.48v which seems...

Also wondering what size tyre to get. The seller lists it as 85mm across but as you can see it isn't actually. I have up to 4" clearance in the dropouts so was thinking of some 90/90 tyres like these https://www.tyretectrading.co.uk/cst-c6501-magsport-90-90-18-front.html ?

Oh well, I've bought the spokes now but I'll remember that for the future. There's loads of clearance between the spokes and the spoke holes so that isn't an issue, I just need to redo it so that the angle of the spokes matches the angle of the rim hole. As I've started tensioning the spokes...