Endless Sphere

Next up, machining the swingarm:

alignment: freshly cut:

No heat treatment planned. Material is pretty thick or in not highly stressed region...

Ready to rebuild the front triangle:
Checking clearances and functionality after spotwelding:

@ DanGT86:

• Distance from bottom bracket to top of seat tube was shortened by 4 mm when I cut the frame.

• 6 setups

• Maybe in the future ...

Did some more testing on full power. Problem did not occur once.

Seems solved. Thanks @ Pedrodemio !!

Making the part that will reconnect the frame:

stock material: Some chips later: After operation 2: A "little bit" later:

I finally got to make my next bike. I was planning on making a bike from scratch, complete frame and swingarm, but decided against (work, kids, ...). The donor bike is a kross moon, size L: kross-moon_640x358.jpg The motor I will use is a astroflight 3215. It will be a left side drive, single speed,...

Hello,

just to let you know that the problem seems to be solved. However, I did only test for a short time, and also limited the power. Tomorrow I will do some more testing and certainly in the weekend.

thanks

I belive the problem occurs when re-applying throttle, not when closing the throttle.
Anyway, I will try your suggestion and post the result.

Thank you

Hello, I have a mountainbike with a astroflight 3215 connected to the rear wheel with a 2 stage reduction. On the intermediate shaft I have a freewheel, the ratio from the motor to this shaft is 4:1. motor controller is a vesc 6.4 Battery is 12s. motor kv is 169 Phase current set to 60 A throttle co...

Or 2 times 6374 motor, or 1 time 8074

I'm now working on a more powerfull bike. Aiming for 120Nm at the rear wheel. I believe I will use a freewheel on the jackshaft.That freewheel be probably homemade as well. as for the rear wheel freewheel, maybe for a next project, if I can find a motor that can deliver enough torque so I can use on...

Hello,

I'm still using this one. working great.

could it be that the castle creations log is phase current and the watt meter is battery current?

very nice. Is the front triangle of the frame completely homemade?

I'm also very interested in the gearbox. Could you show some more details of the internals? Is it something I could duplicate (I also have a cnc).

thank you

If shipping would be done to Luxembourg, It is not so far for me to drive.

I assume it is the other way around? Nm/watt loss?
otherwise the BHT would be the better one, no?

Hello, did a new test run yesterday. I'm running only 44Nm through it for now (put too much effort in it to destroy it the first couple runs :-) ). I also added a torque ramp of 1 sec in the controller. So from 0 to full torque takes 1 second. Engagement is smooth now. It is a real pleasure to ride ...

Hello,

did you try the kemppi on microtack? I have the same machine, so if this works I would like to try the same thing.

greetings

First test run today. It was very muddy. Freewheel worked great. Opened her up after washing, I need to work out the sealing better for these extreme conditions. It was still working perfectly at the end of the ride, but the high pressure washer wasn't the best idea. a bit of cleaning and regrease: ...

The phaserunner has this option as well. Although I don't really understand what it means. The parameter is called "limit speed ramp time". I have it set to 30 000 msec, approximately the max value, but it still is not very slow. Does it need another parameter to work well? Anyway, tomorro...

First test today. Just a quick ride up and down the street. It freewheels very nicely. One thing I noticed is that the engagement is harsh from time to time (as panurge already indicated). This might be a problem for durability, and for sure does not feel nice. Does somebody now if the Phaserunner h...

Ok, first machined version is ready. Too late to test it now, but it is looking good.
I hope I can do a first test tomorrow.

First test today. It was running great with the wheel in the air. I started loading the wheel with the rear brake. When I almost reached full throttle the printed housing just broke open. I assume it very shortly survived something like 30-40 Nm. Oh well, at least I had 2 minutes or so of fun. On th...