Search found 133 matches

by HrKlev
Oct 21 2020 3:22pm
Forum: Battery Technology
Topic: Charging a 12V lead battery from a 18s system
Replies: 17
Views: 314

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

Yeah, I would think so. I'll try to leave it connected when winching, so I guess I will find out. Just need to get on with the conversion and do everything else first :) Think all parts are on their way now, this was the last major piece of the puzzle.
by HrKlev
Oct 21 2020 3:15pm
Forum: E-Bike Non-hub Motor Drives
Topic: Mid Drive Off Road Only BBSHD or TSDZ2
Replies: 6
Views: 177

Re: Mid Drive Off Road Only BBSHD or TSDZ2

My first ebike was a rear geared hub motor and that's pretty much how I rode the trail system. I would pedal all around until I got to a technical section or huge uphill and then just use throttle to get me out of tough spots. Or when I got tired I would just use throttle. I didnt mind that at all....
by HrKlev
Oct 21 2020 11:53am
Forum: E-Bike Non-hub Motor Drives
Topic: Mid Drive Off Road Only BBSHD or TSDZ2
Replies: 6
Views: 177

Re: Mid Drive Off Road Only BBSHD or TSDZ2

I dont have experience with the bbshd, but I have tried to make cadence PAS work for technical trail riding with a cycle analyst. This is my opinion: Forget it. I tried to tweak it a lot, but theres just no way when it gets tecnical. It works great on fireroads, etc, but for the tecnical stuff I jus...
by HrKlev
Oct 21 2020 12:48am
Forum: Battery Technology
Topic: Charging a 12V lead battery from a 18s system
Replies: 17
Views: 314

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

OK, I see. I'm away for work for a couple weeks, so I cant test it right now, and I want to order parts so I can start when coming home. Experience from another winch I have, I would guess at least 100A max. I will find out what happens. It would surprise me if the Victron unit doesnt have some sort...
by HrKlev
Oct 21 2020 12:37am
Forum: E-Bike General Discussion
Topic: Been away a while... how dumb would it be to buy this?
Replies: 7
Views: 241

Re: Been away a while... how dumb would it be to buy this?

Using a small hub motor to climb steep trails very slow is a quite dumb idea, to be honest. If you are mounting it in a wheel, that is. Mount it as a mid drive, and it will climb whatever you like. Its a little more diy, though.
by HrKlev
Oct 21 2020 12:23am
Forum: E-Bike Technical
Topic: Cycle Analyst throttle ramping
Replies: 6
Views: 113

Re: Cycle Analyst throttle ramping

I would just use power mode, and raise the WGain until you get the desired effect, or power starts to oscillate. I think the manual states max recommended 25, but I have ran it way higher to get the response I wanted. Then you can use different V/S setting in different presets to switch between rela...
by HrKlev
Oct 21 2020 12:13am
Forum: Battery Technology
Topic: Charging a 12V lead battery from a 18s system
Replies: 17
Views: 314

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

[ The "real" limit is that the SC will not **output** much over 15A, so really there is no point in feeding much more power than what is required to get to that point (depends on the output voltage you set) V = W/A Alright, I see. Thats how I was hoping it would work. So in a worst case scenario it...
by HrKlev
Oct 20 2020 4:29pm
Forum: E-Bike Technical
Topic: Cycle Analyst throttle ramping
Replies: 6
Views: 113

Re: Cycle Analyst throttle ramping

Have you played with AGain (if you are using current mode) or PGain (if using power mode)? They play a huge role in the behaviour.
by HrKlev
Oct 20 2020 8:49am
Forum: Battery Technology
Topic: Charging a 12V lead battery from a 18s system
Replies: 17
Views: 314

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

OK, I think I will order a 100/15 version. I dont think the lights and other accesories will draw more than 4-5 amps, so 15 amps on the charger should be plenty to top up the battery after some winching. I will use a 3A fuse on the high voltage side. I found a datasheet that says "max PV short circu...
by HrKlev
Oct 20 2020 1:00am
Forum: Battery Technology
Topic: Charging a 12V lead battery from a 18s system
Replies: 17
Views: 314

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

Actually the small Victrons was a lot cheaper than I expected. If I can keep the 12V battery in the system to take care of the power surge, I could get away with the 100/15 version I would think. And feeling a lot more safe than using the no-name aliexpress version. Just to be sure; If I connect the...
by HrKlev
Oct 20 2020 12:37am
Forum: Battery Technology
Topic: Charging a 12V lead battery from a 18s system
Replies: 17
Views: 314

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: 314

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: 314

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: 18
Views: 402

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: 18
Views: 402

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: 9
Views: 240

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: 152
Views: 20808

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: 9
Views: 240

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: 575
Views: 75112

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: 20
Views: 1508

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: 28281

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: 4608
Views: 847952

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: 20
Views: 1508

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: 4608
Views: 847952

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 CA3 only s...
by HrKlev
Sep 29 2020 1:51am
Forum: E-Bike Build Threads / Photos & Video
Topic: My attempt at lightweight, torque based EMTB
Replies: 20
Views: 1508

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...