Search found 424 matches

by ferret
Jul 25 2019 11:36am
Forum: E-Bike Technical
Topic: A Phaserunner-like controller with 12FETs ?
Replies: 5
Views: 298

Re: A Phaserunner-like controller with 12FETs ?

Has anyone programmed one of them with Grins Phaserunner software?

Avner.
by ferret
Jul 25 2019 6:16am
Forum: E-Bike Technical
Topic: A Phaserunner-like controller with 12FETs ?
Replies: 5
Views: 298

Re: A Phaserunner-like controller with 12FETs ?

From what I know, The phaserunner is based on ASI's 2KW controller.
They also make 4KW and 8KW models.
https://accelerated-systems.com/home/pr ... torcycles/

Avner.
by ferret
Jul 19 2019 3:15pm
Forum: E-Bike Technical
Topic: Would you be able to tell the winding rating?
Replies: 15
Views: 402

Re: Would you be able to tell the winding rating?

If you measure the resistance between the phase wires, someone here could probably tell you which winding you have.

Avner.
by ferret
Jul 08 2019 9:57am
Forum: E-Bike Non-hub Motor Drives
Topic: Should a 8S cassete be a good option for e-bikes?
Replies: 18
Views: 689

Re: Should a 8S cassete be a good option for e-bikes?

I don't think that the xt derailleur will work with 8 speed cassettes and chains.

Avner.
by ferret
Jun 01 2019 2:13pm
Forum: E-Bike Non-hub Motor Drives
Topic: 2019 ditch your rear disc brake ?
Replies: 40
Views: 1508

Re: 2019 ditch your rear disc brake ?

Hey ferret, could you find the ditch your rear brake thread, and leave your opinion, especially tell us how pedaling is better with freewheel. Thanks, Cookie. Hi Cookie, all the ebikes I've built or rode had a freewheel incorporated, so I don't know how hard is it to turn the motor while pedaling. ...
by ferret
May 29 2019 10:56am
Forum: E-Bike Non-hub Motor Drives
Topic: Astral Rune build thread
Replies: 23
Views: 3011

Re: Astral Rune build thread

Using the WUXING 108X (on the left side).
After running it stock for some time, I shortened the lever with a grinder to get less linear throw and more sensitivity.


Image

Happy with it.

Avner.
by ferret
May 29 2019 7:55am
Forum: E-Bike Non-hub Motor Drives
Topic: Astral Rune build thread
Replies: 23
Views: 3011

Re: Astral Rune build thread

Yes I did,
The Astro standard motorshaft diameter is 3/8" (9.375mm). IIRC I bought sprockets with 8mm internal diameter (http://www.staton-inc.com/store/index.p ... _str=&pg=2) and drilled them out to 3/8".

Avner.
by ferret
May 24 2019 11:59am
Forum: E-Bike Non-hub Motor Drives
Topic: Astral Rune build thread
Replies: 23
Views: 3011

Re: Astral Rune build thread

Thanks guys!
:oops:

Avner.
by ferret
May 23 2019 1:05pm
Forum: E-Bike Non-hub Motor Drives
Topic: Left side freewheeling cog with rotor
Replies: 18
Views: 766

Re: Left side freewheeling cog with rotor

I don't think there's a business case for selling it, much less making it a product. Not many diy people are interested in converting 150mm frames or retaining the disc brakes. Making an adapter cost around $250 (I had 2 versions made, one alloy and one steel). Add the price of the hub, long axle, f...
by ferret
May 22 2019 6:14am
Forum: E-Bike General Discussion
Topic: Frame Hole Drilling...
Replies: 36
Views: 1364

Re: Frame Hole Drilling...

It depends on the exact location of the holes.

It may be counterintuitive, but a small hole is more likely to start a crack than a bigger hole.

Have you considered using rivnuts? They're what some frames use to mount water bottle cages.

Avner.
by ferret
May 17 2019 12:02pm
Forum: E-Bike Non-hub Motor Drives
Topic: Left side freewheeling cog with rotor
Replies: 18
Views: 766

Re: Left side freewheeling cog with rotor

I run a similar setup in my Astral Rune build and had no brake contamination.
I'm using wax based chain lubes so the only risk is during application.

Avner.
by ferret
May 17 2019 10:18am
Forum: E-Bike Non-hub Motor Drives
Topic: Left side freewheeling cog with rotor
Replies: 18
Views: 766

Re: Left side freewheeling cog with rotor

How much machining on the hub itself? Can you share a picture of the adapter? I had to remove the boss that centers the rotor on the hub as well as modifying the end cap. I also replaced the hubs's axle to from a 150mm hub. Is there a standard thread-on bike Freewheel in there? If so, is the innerm...
by ferret
May 17 2019 1:23am
Forum: E-Bike Non-hub Motor Drives
Topic: Left side freewheeling cog with rotor
Replies: 18
Views: 766

Re: Left side freewheeling cog with rotor

The bike is a downhill bike with 150mm dropouts. 148mm is not enough. I also suspect that a plus size tire wouldn't clear the chain. NW chainrings aren't very sensitive to chain type. I ordered a generic Chinese one and use it with a 10 speed chain. It depends on the specific hub used, but it should...
by ferret
May 16 2019 11:57am
Forum: E-Bike Non-hub Motor Drives
Topic: Left side freewheeling cog with rotor
Replies: 18
Views: 766

Re: Left side freewheeling cog with rotor

It required designing and machining two adapters as well as machining to the hub.
Not many off the shelf parts, unfortunately.
IMG_20190516_212631_800.jpg
IMG_20190516_212631_800.jpg (188.17 KiB) Viewed 628 times
IMG_20190516_212722_800.jpg
IMG_20190516_213513_800.jpg
IMG_20190516_213513_800.jpg (209.51 KiB) Viewed 628 times
Avner.
by ferret
May 16 2019 11:25am
Forum: E-Bike Non-hub Motor Drives
Topic: Left side freewheeling cog with rotor
Replies: 18
Views: 766

Re: Left side freewheeling cog with rotor

I converted a 135mm hub to a 150mm hub. A little bonus is that this setup places the rim exactly between the hub flanges, which makes a stronger symmetric wheel. On the left side, a 56t narrow wide chainring is mounted on a freewheel behind a 203mm brake rotor. The planned build is a mid drive setup...
by ferret
May 16 2019 7:39am
Forum: E-Bike Non-hub Motor Drives
Topic: Left side freewheeling cog with rotor
Replies: 18
Views: 766

Re: Left side freewheeling cog with rotor

Thanks.

It's 150mm.

Avner.
by ferret
May 08 2019 12:36pm
Forum: E-Bike Non-hub Motor Drives
Topic: Index of all left side chain + brake designs ?
Replies: 16
Views: 626

Re: Index of all left side chain + brake designs ?

If the frame you are considering doesn't fit a 203mm rotor, it probably won't allow this kind of setup. Very nice build for the intended use, but that bike has a skinny frame, no rear suspension, and narrow tires, which make it easier to convert but unsuitable for the riding I do. Not to mention the...
by ferret
May 08 2019 10:17am
Forum: E-Bike Non-hub Motor Drives
Topic: Index of all left side chain + brake designs ?
Replies: 16
Views: 626

Re: Index of all left side chain + brake designs ?

The conclusion that I came to is that to fit a left side chain + brake design, a rear axle axle width (chainstay spacing) of a least 150mm is required. That will mostly limit the frame choice to Downhill and Fatbike frames. It is possible to fit the brake and sprocket in a narrower rear end, but the...
by ferret
May 08 2019 8:35am
Forum: E-Bike Non-hub Motor Drives
Topic: Index of all left side chain + brake designs ?
Replies: 16
Views: 626

Re: Index of all left side chain + brake designs ?

I've done it with custom "top hat" style adapter and caliper adatper:
https://endless-sphere.com/forums/viewt ... 28&t=82678

Avner.
by ferret
May 03 2019 12:27pm
Forum: E-Bike General Discussion
Topic: Pros/Cons of a 44t/22t vs 32t/16t on a mid drive?
Replies: 5
Views: 266

Re: Pros/Cons of a 44t/22t vs 32t/16t on a mid drive?

Both 44t/22t and 32t/16t give you the same 2:1 gear ratio.

From the issues you mentioned only the teeth engagement and maybe the Wear/Maintenance will be different.

Avner.