Endless Sphere

Don't bother, get yourself ACS Crossfire freewheel.
You need a bearing puller to get current one off with it's bushing to gearbox shaft. Getting freewheel off the bushing is trickier but you'd need to do it any case.

jonnydrive wrote: ↑

Apr 12, 2018 1:38 am

What do you think it is the cause of the broken? The low quality of the components, the absence of a rear suspension or something else?

No suspension, high tire pressure and heavy bike (about 35kg: 15kg bicycle, 5kg motor+controller, 15kg battery). Oh, and high speed and bad roads.

I have a hardtail, about 1400km since conversion (250-300km in winter). I wish I had full suspension, even when riding only streets.
During winter I broke rear axle riding local forest biking/skiing/jogging trail - which had quite smooth, worked up surface.

If not suppose I put a 24T sprocket on the motor shaft and then that connect to the 14T sprocket on the bicycle hub would that affect my torque capability to go up hills drastically? You would have about 1,7 times less torque than in 14/14 setup. I know that sizing is for speed and I am wondering i...

Mounted as seen on picture, it will stick out nearly 150mm to one side. That "side mount" would be doable with less protrusion if motor sits above rear wheel, well behind seatpost to clear rear frame arm. Making mounts to withstand the motor torque is a challenge as the motor will sit too far away f...

yep, mee too, the chain without the standard front derailleur jumps sideways, but with two front chainring it is difficult to build a good chain tensioner because the chain needs to move up and down and left and ride to follow the gearings . I built a handmade prototype version, testing will came s...

Great work with the mount! Nearing the motor to the crack requires to pay attention to two things: do not make the engine the lowest thing after the bike wheels (like the bafang) hitting a rocks with the motor may damage it limiting the chainring size I would append to this list: driving sprocket (c...

Thanks. At the front/lower corner is M10 hole for tensioner swingarm. CAD picture has swingarm covering that hole. 3x M6 holes for (future) chain guard. At the bottom, 2x counterbored holes (for M8) on both sides for support block connecting both mounts together, reinforcing against lateral forces. ...

I got fed up with motor chain tensioner, so I designed my own. With new motor mounts to install one. CAD: Cyclone assembly.JPG Mounts designed around 150x10mm 6063 aluminum bar As you can see from cad, left side mount cuts into motor shell. Well, it's supposed to: 20180325_105737.jpg Mounts complete...

Which sensor did you order - 150 or 200 one?

Thanks for helping to clear that.

Now another one - seems like the price difference between ordering one and ten PCB's can be up to five times.
So reasonable would be to cooperate (maybe even with parts). Anyone interested in taking this on?

Any suggestions for replacing, it's out of Digikey stock:
supply cap 270uF 3 565-4018-ND ?
Is ripple current important or are the basic parameters enough (capacitance, voltage and dimensions)?

BTW, ACS770-150B is pretty hard to find from other shops (Digikey stocks 2+k)

I got ACS Crossfire Freewheel from ebay. So far it has not blown up.

DingusMcGee wrote: ↑

Feb 06, 2018 8:22 am

To begin with the above assertion by minimum is false. Thru bolts do add stiffness to the floppy hinge setup in which the motor is fastened to the motor frame side plates.

I thought we were talking about stock ("new style") cyclone mounts.
On your mounts the difference is obvious.

Left side (that thin bent one) mount needs to be between two nuts (large thin toothed one) on BB. I used one from my old BB that came off when installing Cyclone. That way you can control how far the mount sits on BB and keep it flexing under load. In theory it controls angle between motor and BB ax...

Thank you for the prompt response. I will try to add spacers at point 1.the alignmrnt is straight. I think I will stiffen the motor mount If sprocket and motor cog line up and it still throws off the chain then I can think of another 3 reasons: 1. Chain tensioner is not aligned or loose (laterally)...

Good way to check motor chain(-rings) alignment is with the chain off. Press ruler to the side of chainring and check whether there will be a cap between ruler and freewheel cog or between ruler and front edge of chainring. In first case, there's also possible to make small adjustments by releasing ...

progrock wrote: ↑

Jan 30, 2018 9:35 pm

EDIT: ok, after 100 pages of the cyclone thread, finally found it, looks like it's a 6 pole, which is what I was expecting...

That cyclone motor has 8 magnets on rotor and 12 stator slots, which should make 4 pole pairs.

Solderable "dummy pins" (from 2.54mm male-male SIL headers) to conserve PCB space?

Gate drivers on separate PCB, on top (or underneath, depending on the POV) of FET PCB?

Look for 3D printer parts stores - some bed heaters for printers are paper thin. 12 VDC version are most common, 24VDC less common and 240VAC are rare. They come with thermistor attached and should have some kind of additional regulation or it will cook your battery. https://www.robotdigg.com/produc...

Amec Thermalsol makes really "cool" flat heat pipes, originally intended for LED lights. They are really flat (from 1,2 up to 2,5mm), quite easily bendable and have ridiculously low Rth ( thermal resistance ). Farnell used to carry these for decent price but they seem to have discontinued and now a...

DrkAngel wrote: ↑

Dec 18, 2017 7:47 am

LEDs are 20% efficient, so 80% heat.

If light gets trapped inside glove then it eventually will be converted to heat as well. So 100% efficient in this application.

Usually for these controllers there's to-92 case voltage regulator which is capable of putting out up to 100mA.
Technically it is possible to replace it with to-220 one which are usually capable 1-1,5A with cooling.

whereswally606 wrote:page one post one

I guess it was too obvious. But thanks.