Endless Sphere

that will be a very nice ride when it's done!

I suspect it is mostly your username that gets some people worked up so much that they pick on any detail...

This bike is getting better and better

I'm not a trail rider but it reads like it would be beneficial to have a "flywheel motor" with a clutch on a trail bike. Basically a QS205/50H hub motor with a thicker outer ring (not lathed down in the middle like normally to create the spoke flanges) and a clutch between the (stronger/reinforced) ...

I suspect a Thermo Nucular 24F would do great. In many cases the Nucular makes a motor run cooler at the same amp input. I would suggest to up the voltage of the battery and system to 20S at least and increasing the Ah capacity for a "stronger" (less sag) pack. That automatically gives you a higher ...

I don't know if you use the top speed a lot? If not maybe shorter gearing might help?
The Nucular controller might be a good upgrade indeed.
How hot does your motor get while riding?

A lot of hard work is going into this motor

Braking and breaking power is strong in this one...

Don't worry: nobody cares about your feelings.
You just come across as a di..

That looks like a beautiful trip!
And great to read that your very nicely built bike did so well.

They seem to be from November 2014 so 5 years old. Do you have a possibility to test the remaining capacity? That would give a clue to their health.

Balmorhea wrote: ↑

Dec 02 2019 2:02am

Next time perhaps you will remember to use a U-lock. Even the shabbiest of those would not have given it up so easily.

Does anyone make a high quality electric throttle? Or does this cable pull adaptor work and of decent quality? https://cart.electricscooterparts.com/productdetails_popup.asp?productcode=THR%2D99 Domino throttle is the best, it will make even the stock controller usable with the right settings, but ...

Then I'll call them to do an unsuccessful trial in my area

Good luck building the bike up like you want.

That looks really bad for ergonomics...

Doesn't an abandoned rental bike stay property of the rental company? It looks almost new. Sounds sketchy...(hope it's not)

It seems like your front suspension design has no trail or even a little lead on the front tire contact patch. But the angle of the photo is not good enough to see it clearly. Is your scooter not too nervous when riding higher speeds?

Great work!
I'll be following this thread.

bzhwindtalker wrote: ↑

Nov 30 2019 12:11pm

Hi guys, report from the belt testing,

Great result!
And very well executed. The wrapping so far round to almost 9 O' clock is a bonus to not getting stuff caught between belt and pulley.
But it looks like the bolt of your rear shock is missing or is that just my imagination?:

:thumb: Yes that seems a very smart way to replace the lost strength that the removed engine provided. If you build the battery box/frame out of metal tubes or plate and integrate (welded or bolted) that as well into the total frame structure it will probably stiffen it up even further. Did you cont...

Good idea and worth trying!
It seems to counter the unsprung weight of the rear wheel so the shock will "feel" less weight compressing but more in rebound. So you might have to change or revalve and respring the rear. Is the room left in the frame enough to house the battery pack?

Please be more clear. I was only trying to help and advise this OP to use the motor on the crank and not directly to the wheel as aiding the pedaling through the gears seems more efficient. And makes the most of the road legal 250W he is aiming for. I wasn't trying to get in a discussion about the ...

They use a potentially 2kW motor with a 1:10 gearing on the crank. That means that it can only deliver roughly 200W continuous an around 400W peak power. It means nothing of the sort. Watts is torque times RPM. Reduction decreases RPM while increasing torque. Provided you have enough volts and ampe...

Just lock the clutch in a geared hub motor for regen braking.