Endless Sphere

So is an extra 6FET $50 cheaper than the first?

Is the cost for multiple controllers always $100 cheaper than the initial cost of the first or is that just for the 12fet?

Do all the controllers work in tandem?

The watt ratings in all if these parts are suggestions not absolute limits. You can run a 250watt motor at 2500 watts but it will get hot right away. If you keep a motor cool and its wires are thick enough there really isnt a true limit to rate the power at within reason. If your motor is 250 watts ...

What is this "good solder" you mentioned when you were working with the tiny halls?

Looks like the whole 5v bus is 4.33 everywhere I check. I rebuilt the hall connector with fresh pins and good crimps. That one hall in question wont read a good signal with the scope in auto. The other 2 will. When I manually set the time in the scope they all read nice and clean with the caps. I'm ...

Hard to see it clearly but it appears there are 3 spoke holes per every brake rotor screw hole. Based on that it would have to be 36.

That also assumes the pic is for the actual product.

What is the distance between the spoke flanges?

Is there any shipping option to the US?

Caps worked out well. In my original test a few posts back I had the leads reversed at the meter so my noise was in fact in the off state. :oops: If the controller threshold is .8v then I can see where this noise was easily getting there. I started with just one cap from the pos to neg feed shared b...

Halls are external so they are reading through the motor can using one of these boards. I routed the wires away from the phases and main power input wires just as an added measure. That didn't seem to change anything. http://e0designs.com/documentation/hall-effect-sensor-board-adapter-installation/ ...

So basically just add the cap like the one outlined in red on this diagram? What is the math used to determine the value of these caps and pull up/down resistors in this circuit below? Is there any harm in adding the bypass cap between output and ground as well? Also just to check my understanding h...

Overall the signal seems to avg 5v if im reading this correctly. The on and off time looks about the same and the upper left reading is around 2.5v. Im assuming that is the avg between 5 and zero. Its just the shakey oscillations around the 5v line that im wondering about. How flat should that line ...

I have an external hall board on my 80100 motor. I get some weird skips in power delivery when I hold a steady rpm under load. I finally got a chance to hook a scope up to them and get some idea of what the signal looks like. I'm spinning the motor with a hub motor mounted to the same swingarm that ...

Isn't the hole in most frames a smooth bore with the threads being part of the hanger?

Thanks. That's exactly the type of answers I was looking for. I'll try again with better contacts and thicker discharge wire. During the test I was adding more alligator clips in parallel with the main discharge leads to see if the displayed voltage increased and it didn't make much difference. I re...

About 4 years ago I bought some 10Ah LiCoNiMnO pouch cells. I have kept them stored in a cool dry environment at about 3.7v. I pulled them out of storage and ran a discharge test with my Hyperion 1420 charger to see what kind of capacity and sag they had under load. Unfortunately the charger doesn't...

I would think Fusion has a sprocket generator as well. This online calculator will generate DXF files you can open in other cad systems based on chain specs. I don't think it builds in any clearance though. http://www.idleamusements.com/?page_id=367 I'm in the same boat trying to learn fusion 360 at...

Moto, have you tried the sprocket generator in MasterCam? Just going from memory here but I think you plug in roller dia, pitch, and number of teeth and it generates a sprocket. I did notice the generated sprocket root radius is larger than the roller dia. i gave it so its building in some standard ...

Had some time to mess around with this project this past week. I am currently having the best results running the motor with a lyen 12FET EB3xx generation controller. It seems to work really well accelerating but has a weird stumble under load that is very apparent when trying to maintain a consiste...

I had been storing my Lipo in an old oven in the basement. The thinking was if there was a fire at least the oven is made to contain hot stuff so the rest of the house might survive. The oven is right by my basement door so I could wheel the smoke bomb outside if it caught fire while I was home. Las...

You have some serious riding skills!!!

Awesome build. I think we would all like to see some more detailed info on the conversion. What makes you want to swap the motor for the 75-5?

There are jackshaft mountable versions and motor mountable versions. I believe the idea is that the ice needs to be able to idle but engage as soon as the revs increase. I think these fancy ones are very adjustable and have multi disks to hold high powered 2 stroke motors compared to the small non a...

Got it. I think you are correct that you will need a clutch of some sort to achieve that level of control. When most people start talking about clutches on here they are usually thinking of them in terms of rev up and dump like a gas bike. Electric motor torque is amazing but zero rpm is still zero ...

LFP, from what you have seen on this bike with your high power testing, would you consider the motor a good candidate for a non Sur-Ron conversion or is it just impressive for the stock hardware on that bike? Basically, if someone were doing a full size MX bike conversion at say 20-30kw would this b...

Have you been able to do any tuning of the controller. The zeros are de-tuned from the factory down low to preserve reliability. Even an underpowered electric drive system should be able to tear a bike in half or flip you over. You may want to look into unlocking and tuning the controllers for a ste...

I've considered a small geared hub as a reliable and easy solution but I havent seen them used here lately. As for RC motors, I actually have an 80100 drive unit I made and considered mounting but I dont think its reliable enough for the kids to be crashing. It has a gates belt primary reduction and...

Anybody have an extra brushless mid-drive motor laying around? Something small is fine like a motor rated at 500-1000watt like this: mot small.png Trying to power a kids motorcycle and not looking for huge power but I plan to play on it too so its tiny brushed unit has to go. :twisted: Looking to st...