Search found 148 matches

by HrKlev
Oct 20 2020 12:37am
Forum: Battery Technology
Topic: Charging a 12V lead battery from a 18s system
Replies: 17
Views: 372

Re: Charging a 12V lead battery from a 18s system

Yes, that Victron unit looks like exactly what I could need. It is a little out of budget atm, unfortunately. Would this aliexpress controller do the trick at the moment, you think? https://a.aliexpress.com/_mOxiKFj Im thinking I could just keep the original 12v system on the ATV including the 12V b...
by HrKlev
Oct 19 2020 11:43am
Forum: Battery Technology
Topic: Charging a 12V lead battery from a 18s system
Replies: 17
Views: 372

Re: Charging a 12V lead battery from a 18s system

Thanks, but I dont think this would work by itself...? I actually have a 10A version here after another project. When the winch is used, the 12v battery will sag a lot, so if this is connected to the battery without some kind of current limiter it would go into overload...? And 20A is not enough to ...
by HrKlev
Oct 19 2020 10:36am
Forum: Battery Technology
Topic: Charging a 12V lead battery from a 18s system
Replies: 17
Views: 372

Charging a 12V lead battery from a 18s system

Hi! I've been searching a bit, but havent found quite what I am looking for.... Is there a device out there that doesnt cost a fortune, and can safely charge a 12v lead acid battery from lets say a 18s system? I want to keep 12v battery on an ATV conversion because of a 12v winch that demands a lot ...
by HrKlev
Oct 17 2020 2:15am
Forum: E-Bike General Discussion
Topic: How do I size the proper mid-drive for off road use?
Replies: 21
Views: 677

Re: How do I size the proper mid-drive for off road use?

Until there's a reliable system for DIY torque sensing power assist, I'm going to recommend against that. It would be nice. What we actually have is either fussy, fragile, expensive, complicated to install torque sensing enhancements for the Cycle Analyst, or TSDZ2 which is a flaming bag of turds. ...
by HrKlev
Oct 16 2020 12:34pm
Forum: E-Bike General Discussion
Topic: How do I size the proper mid-drive for off road use?
Replies: 21
Views: 677

Re: How do I size the proper mid-drive for off road use?

If you're building a bike for exercising and like pedaling, why not build something lightweight with proper torque sensing assistance to keep the bike feel?
by HrKlev
Oct 04 2020 6:33am
Forum: E-Bike Technical
Topic: Cycle Analyst/Baserunner limits motor power at random
Replies: 11
Views: 278

Re: Cycle Analyst/Baserunner limits motor power at random

You could perhaps plug in the programming cable in the baserunner, and assemble everything witht the USB plug easy accessible. Then go for a ride till it is cutting out, and plug your laptop in. I think the controller temperature is available in the dashboard view in the baserunner software. Then yo...
by HrKlev
Oct 03 2020 2:47am
Forum: E-Scooter and Motorcycle Photos & Videos
Topic: KTM 200 exc goes electric
Replies: 162
Views: 22558

Re: KTM 200 exc goes electric

How is the front sprocket and motor axle holding up? Still tight afer some abuse? I ended up with a 11T JT sprocket and bigger rear sprocket myself on the ATV. The 10t sprocket that came wit the motor had a ton of slack. So I appreciate the info where I could get a new sprocket :thumb:
by HrKlev
Oct 03 2020 2:27am
Forum: E-Bike Technical
Topic: Cycle Analyst/Baserunner limits motor power at random
Replies: 11
Views: 278

Re: Cycle Analyst/Baserunner limits motor power at random

Whats the temperature on the baserunner? If it goes into thermal rollback it will cut the power without showing it on the cycle analyst screen. If it is accessible, try to get a temp reading of the metal part on the baserunner, or at least a feel with your hand. Not sure how much it would take, but ...
by HrKlev
Oct 03 2020 2:13am
Forum: Motor Technology
Topic: QS 3000w midmotor
Replies: 598
Views: 78089

Re: QS 3000w midmotor

The loose fit is in the sprocket. I saw j bjorks thread and also ordered a JT sprocket (for some suzuki 85cc dirt bike, was it?). It fits perfectly. On mine, the wear was on the old sprocket for most of the part after 1000km, motor was fine. But yeah, I agree it is definately not hardened like it sh...
by HrKlev
Oct 01 2020 4:58am
Forum: E-Bike Build Threads / Photos & Video
Topic: My attempt at lightweight, torque based EMTB
Replies: 33
Views: 2693

Re: My attempt at lightweight, torque based EMTB

It sounds a bit like a walk mode that is always running, is that the general idea? Do you feel any motor pull or overrun when you stop pedalling, or will it eventually coast to a stop? Is there just the single stall time setting that times out after you stop pedalling, or does it require the speed ...
by HrKlev
Oct 01 2020 2:38am
Forum: E-Bike Non-hub Motor Drives
Topic: PaulD's lightweight mid drive development
Replies: 168
Views: 28869

Re: PaulD's lightweight mid drive development

The CYC pro kit has a torque sensor and a freewheel that plays fine together with a CA. Its available as a spare part on their webshop, for 100mm, 63mm and even BB92 bottom brackets. I think it is a erider with a modified flange. Its not as nice as PaulID's solution where the freewheel sits outside ...
by HrKlev
Sep 29 2020 6:53am
Forum: E-Bike Reviews & Testing
Topic: Cycle Analyst V3 preview and first beta release
Replies: 4617
Views: 856684

Re: Cycle Analyst V3 preview and first beta release

Yes, actually more to the point I'm strongly considering in the next update that we just drop the watts/Hwatt scaling factor and have it instead be Watts/Nm. This is actually the original implimentation of the CA3 way way in the early beta/alpha firmwares. It was switched over to being W/HW because...
by HrKlev
Sep 29 2020 5:53am
Forum: E-Bike Build Threads / Photos & Video
Topic: My attempt at lightweight, torque based EMTB
Replies: 33
Views: 2693

Re: My attempt at lightweight, torque based EMTB

With the electric freewheel enabled, it is using around 15-20W to keep the motor and chain spinning, so I can just set assistance to zero to get absolute no extra drag at all. Not that I feel much of a difference. So when you start pedalling it gives you a flat ~20W assist? Or does it vary up to th...
by HrKlev
Sep 29 2020 2:03am
Forum: E-Bike Reviews & Testing
Topic: Cycle Analyst V3 preview and first beta release
Replies: 4617
Views: 856684

Re: Cycle Analyst V3 preview and first beta release

Is there any reason why the "electric freewheel" feature that is inlcuded in the Phaserunner controllers is not implemented in the Cycle Analyst? This is a great question and was actually on the CA3 roadmap for a while, but we decided to pull it from the list. As NCC1941 pointed out, the ...
by HrKlev
Sep 29 2020 1:51am
Forum: E-Bike Build Threads / Photos & Video
Topic: My attempt at lightweight, torque based EMTB
Replies: 33
Views: 2693

Re: My attempt at lightweight, torque based EMTB

Fantastic work there and I'd love to see a video of it in operation and some more close up photos. Having those CYC parts available sure helps. What is the drag like when pedalling with the motor off, does the freewheel totally disconnect the drive system? I'm looking for something like that to ext...
by HrKlev
Sep 23 2020 5:05am
Forum: E-Bike Build Threads / Photos & Video
Topic: My attempt at lightweight, torque based EMTB
Replies: 33
Views: 2693

Re: My attempt at lightweight, torque based EMTB

It was hard enough finding nylon gears for this one, so I dont think anyone makes metal for it. I think its a quite new design on this motor, it has been a q75 motor that looks similar on the market for many years, but that was sensorless. This one has sensors, and a two-stage planetary reduction wi...
by HrKlev
Sep 22 2020 9:07am
Forum: E-Bike Build Threads / Photos & Video
Topic: My attempt at lightweight, torque based EMTB
Replies: 33
Views: 2693

Re: My attempt at lightweight, torque based EMTB

Thats a cool build, havent seen it before! I need at least 500w for 15-20 minutes more or less continiously to keep up with the normal "250w" storebought ebikes in the ascends, though, so I think it would fall a bit too short. The motor Im using is only ~400g heavier (torquesensored BB, mo...
by HrKlev
Sep 21 2020 12:50pm
Forum: E-Bike Build Threads / Photos & Video
Topic: My attempt at lightweight, torque based EMTB
Replies: 33
Views: 2693

Re: My attempt at lightweight, torque based EMTB

Cool! Just let me know if you want more details of something. I've got a lot more, but trying to keep the thread readable as well 😬
by HrKlev
Sep 21 2020 6:04am
Forum: E-Bike Build Threads / Photos & Video
Topic: My attempt at lightweight, torque based EMTB
Replies: 33
Views: 2693

Re: My attempt at lightweight, torque based EMTB

Thanks! Im not really sure how how the effiency curve looks like, but it is rated for 201rpm, so I guess it should enjoy life around there... It is spinning 264 rpm unloaded on full charge, and I am currently running a 19-42t sprocket-chainring setup. I like to keep around 85-90rpm when I ascent on ...
by HrKlev
Sep 18 2020 1:58am
Forum: E-Bike General Discussion
Topic: Is DIY dying?
Replies: 40
Views: 1600

Re: Is DIY dying?

Lightest.bike seems to come out quite soon with a very lightweight mid drive.

Also, hooking up a small hub motor as a mid drive is a really easy way to get a light, silent, low power setup with decent torque. IMO better in many aspects than the mid drives that are on the market now. Thats DIY :D
by HrKlev
Sep 17 2020 1:04pm
Forum: E-Bike Build Threads / Photos & Video
Topic: My attempt at lightweight, torque based EMTB
Replies: 33
Views: 2693

Re: My attempt at lightweight, torque based EMTB

Thanks! Yes, Im very happy with the Liteville. Its my first "proper" full suspension, so I dont have much to compare it with, though. Im quite amazed how much gnarly stuff these shocks can take up. Its all rocks around here, so just need to be brave enough 😁 Today I found a 10K resistor an...
by HrKlev
Sep 16 2020 2:52pm
Forum: E-Bike Technical
Topic: Unable to connect baserunner to computer
Replies: 6
Views: 318

Re: Unable to connect baserunner to computer

Not sure if you know how to test the halls without using the controller, but I found this that I will attempt myself, once I can get a hold of a 10K resistor: https://electricbike.com/forum/forum/ki ... and-wiring
by HrKlev
Sep 16 2020 2:45pm
Forum: E-Bike Build Threads / Photos & Video
Topic: My attempt at lightweight, torque based EMTB
Replies: 33
Views: 2693

Re: My attempt at lightweight, torque based EMTB

So I cant get the halls figured out. Starting to think its the controller that is the problem. Its the blue hall that is not responding, and if I plug in the brand new bafang motor, I get the exact same error. When I was messing around with trying to make the sensorless startup smoother, the last ha...
by HrKlev
Sep 16 2020 4:44am
Forum: E-Bike Technical
Topic: Unable to connect baserunner to computer
Replies: 6
Views: 318

Re: Unable to connect baserunner to computer

Oh, and unless you have plugged in a cycle analyst, there are some hidden wires in the throttle connector that needs to be shorted or connected to a switch, to get the baserunner to turn on. Cant remember the colors, but it is in one of the info pages on ebikes.ca