Endless Sphere

I was going to use a center lock to 6 bolt adapter the mount off the back side. Not sure it will be strong enough though.
Your adapter is beautiful, makes my manual machining look very rough.

I've seen batteries mounted in the space where the radiators were. More of a modular setup though.

Any plans for a suspension version? How is the noise level?

It fits around the spline created by the brake mounting fixture correct? I've had something similar in mind and another design using a centerlock hub to get it bolted behind that area.

Batteries and motors can't be almost anywhere unless you don't mind having the handling of a forklift. Batteries need to be low and centralized, which is also where the people want to be. You can make them part of the structure but only if you are confident they will never need replacement. Motors e...

Would you sell that adapter? It's exactly what I've been looking for.

With the larger rear sprocket you may be able to get away with a higher front sprocket since you should have a fair amount of anti-squat.

You keep describing exactly the situation where gearing works exceptionally well.

I now have a Velocity hub with excellent bearings. I always buy extra bearings because they may stop making them. Since when? Most bearings used in cycle components are industrially standard parts that will be available long after the parts they go into are out of production. Some of the weirder be...

I mean how you run both a brake disc and sprocket.

Zeurus wrote: ↑

Dec 07 2019 2:05pm

SlowCo: thx

Grantmac: squat wasnt that bad, but my brother had problems with his clothes getting in the chain XD

Yes that would be a bit too exciting!

Any chance of a hub picture? These are amazing builds.

100mph isn't happening with an EEB or 18kw for that matter.

Increasing voltage will allow you to lower gearing without losing top speed. Also changing controllers for higher phase amps and faster response should make a difference. Additionally I believe that Emotion offered an electronic clutch which allows you to dial the throttle then "engage" it by releas...

Look at the Lightning Rods LHD setup. Either as a complete option or inspiration.

Keep in mind one person's "offroad" is another's walking path. So be careful which advice you follow. Me personally I want it under 5" at top tube height, perhaps slightly more on the downtube but not much. Be careful to take into account suspension travel if you are going to do any real offroading....

150x12mm DH hub will clear 3" tires depending on the rim.

I'll be interested to see if there is much of an efficiency reduction especially with that much wrap around the idler.

On the other hand with that much wrap you almost don't need teeth on the rear sprocket so wear should be very low.

That rear hub will not be a good choice on rough terrain. Put the money into more battery and controller for the cyc, it can take it.

Compared to a repurposed washing machine motor its a doodle. The stock mounting just needs some help.

I think by the time you buy all the accessories to make a salvage motor run as a mid-drive the Cyclone will seem like a reasonable price. It isn't great but it works and so long as you aren't running it full tilt it's reliable (I commute one).

Rather than driving the cranks via a separate chain and chainwheel you could look at a "chain puller" style. Depending on wattage you might still need a freewheel. Also you'd need a gearbox but at that wattage they are easily found in the robotics field for reasonable prices or could be done with mu...

Given that dB is a logarithmic scale that is a HUGE noise decrease. My thought is going for the large amount of wrap around both sprockets should allow slightly less tension and also keep rocks out of the drivetain. My one concern would be replacing a custom on-off rear sprocket. I have an idea for ...

Have you considered the Gates split belt design? It seems to make for lighter pulleys which also shed dirt.

The 1kw isn't out of the question, look at CYC pulling +5kw out of a motor weighing perhaps 3x that much not to mention the Tangent builds. I'm sure that keeping it spinning is part of the equation so gear selection will be important. I'm interested to see how much reduction it has and what sort of ...

Replace with a Meanwell. Then you have both waterproof and fanless.