Search found 430 matches

by ferret
Sep 18 2019 3:38am
Forum: E-Bike Non-hub Motor Drives
Topic: Diamondback OverDrive 27.5 "RidgeRunner"
Replies: 62
Views: 11004

Re: Diamondback OverDrive, the RidgeRunner

I applied some grease to the back side of the brake pads, as was suggested to reduce the rear brake howling. It did change, but it did not solve the problem. I use Kevlar compound pads from Discobrakes (https://www.discobrakes.com/?s=0&t=0&) on all my bikes. They are silent and don't seem to have a...
by ferret
Sep 14 2019 6:07am
Forum: E-Bike General Discussion
Topic: rear triangle seat tube
Replies: 35
Views: 783

Re: rear triangle seat tube

Probably it's for mounting a front derailleur.

Avner.
by ferret
Sep 11 2019 7:55am
Forum: E-Bike Non-hub Motor Drives
Topic: Left side drive, prevent chain from derailing?
Replies: 5
Views: 244

Re: Left side drive, prevent chain from derailing?

StinkyGoalieGuy, the Phaserunner controller has a new "virtual electronic freewheeling" feature which helps with the problem you are describing. Only 2 rides with it, but I like it very much. Avner. In addition to that, we've also changed some things around on the layout and added a few features. Fi...
by ferret
Sep 10 2019 3:21pm
Forum: E-Bike General Discussion
Topic: Will the bbshd fit on this bike?
Replies: 9
Views: 292

Re: Will the bbshd fit on this bike?

If you fit BBS to this frame in will severely compromise ground clearance.

Avner.
by ferret
Aug 26 2019 1:35am
Forum: Items for Sale - New
Topic: Compact Field Oriented Controller, ASI + Grin, limited run
Replies: 1219
Views: 214828

Re: Compact Field Oriented Controller, ASI + Grin, limited run

Went on an extended ride yesterday and discovered a small issue with the electric freewheel feature. While standing stationary, if the bike rolls backwards then the electric freewheel activates. I guess it is triggered by any movement in the motor regardless of direction. I think it should only acti...
by ferret
Aug 24 2019 11:24am
Forum: Items for Sale - New
Topic: Compact Field Oriented Controller, ASI + Grin, limited run
Replies: 1219
Views: 214828

Re: Updated V1.1 Phaserunner software to test, with Virtual Electronic Freewheeling

There have been a number of tweaks on the back-end that we are hoping will fix the random communication errors or other glitches that some people would experience during the autotune process, and we've also updated the error dialogs when they do show up to be much more informative. So if you are so...
by ferret
Jul 25 2019 11:36am
Forum: E-Bike Technical
Topic: A Phaserunner-like controller with 12FETs ?
Replies: 5
Views: 361

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: 361

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: 504

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: 873

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: 1719

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: 3194

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: 3194

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: 3194

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: 906

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: 1523

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: 906

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: 906

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: 906

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: 906

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 764 times
IMG_20190516_212722_800.jpg
IMG_20190516_213513_800.jpg
IMG_20190516_213513_800.jpg (209.51 KiB) Viewed 764 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: 906

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: 906

Re: Left side freewheeling cog with rotor

Thanks.

It's 150mm.

Avner.