Endless Sphere

Im not up on my VESC trivia. Can these be updated to the latest firmware such that it would be functionally equivalent to a VESC 4?

I agree that chain retention is easier with non shifting standard teeth and singlespeed chain. The issue I keep bringing up about tensioners and chain management is based on the design of full suspension mountain bikes. Many common frames are not single pivot. On the above mentioned supermoto applic...

Using the rear brake extends your stopping distance. The hardest you can stop is with the rear wheel just above the ground. Not challenging that statement but am genuinely curious about your source material. Do have any links or articles explaining it? Seems totally reasonable that the max braking ...

Nobody said you couldn't lock up wheels up with regen. In a nutshell, the same way ICE unconsciously encourages you to speed away from a green light. Regen, encourages you to prepare, slow down, and engage a corner half a mile away. You have NO clue. With ASI controller and left hand domino regen t...

I have not ridden a bike with variable regen but I have serious doubts about riding without a mechanical lever actuated rear brake for a variety of reasons: I like the modulation of regular brakes and the ability to lock up the wheel for trials type riding. If high end variable regen matches modulat...

Nice plan and work so far. Controllers for these large RC motors have proven challenging for bike use so far which is why you don't see a whole lot of them run to full potential. Looks like a nice compact mounting solution. Have you given any thought to using the swing-arm pivot as the jackshaft loc...

Is there a standard thread-on bike Freewheel in there? If so, is the innermost circle of 8 bolts smaller than the minor diameter of the Freewheel threads so they can pass through to the hub? Its hard to see what is going on there? Are you keeping it secret?

I love the "Heavy" sticker as if a pallet of anything that size would be tempting for a person to lift by themselves.

There a quite a few watercooled small motor options on the market. Alien power systems offers watercooled versions of the more common ebike rc motors. The design considerations for use on a bike are always the same: does the cost weight and complexity of plumbing and radiator end up diminishing the ...

Nice! They are quietly hanging on to some cool tech over there at QS. I tried inquiring about the 7kw and 10kw mid-drive motors but they wouldn't give up any info. Considering the short burst power of the 3kw motor I think a 7kw matched to one of these EM300's would be about perfect for full sized m...

Are you planning on offering the BAC4000 with a profile program for this motor?

Does anyone know the maximum safe pack voltage for the Votol EM-150? There is a screenshot from the software that shows a drop down menu with options 48,60,72,84,96v. Those are common nominal pack sizes but does anyone know the absolute safe upper voltage?

What is the belt profile for the pulley that comes on this motor? Is it something common like 8mm Gates GT? They are offering it with a splined output shaft for motorcycle sprockets as well? Does anyone happen to know if these are common spline sizes that would be interchangable with common dirt bik...

What spline size is on the shaft/axle? Looks like it is interchangeable with common motorcycle sprockets but I would like to know which ones?

When will information be available on the 7kw and 10kw mid-drive motors.

Will be interesting to see how well that thing holds up to electric motor torque. I think step one should be machining an adapter to relocate that motor above the gearbox with a belt or chain connecting the two. That assembly looks super wide. :wink: I might have missed it but which motor is that? I...

I suspect this will be a tough question to answer since there are so many experts on here with different opinions of "good enough" but I'll ask anyway. Is it possible to get a sevcon and a motor like an ME1507 purchased together as a kit and have it just work out of the box? Most of the vendors I've...

Can you estimate what the total price would be for the small motor shipped to the US?

What is the kv of the small motor?

Are you monitoring temps inside the motor? By the time the heat soaks through to the case it could be way too late for the windings.

Great job on the bike build by the way!

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...