Search found 20 matches

by Blacksword
Jan 14 2021 2:22am
Forum: Battery Technology
Topic: Daly or other BMS for 14s 52V pack
Replies: 7
Views: 199

Re: Daly or other BMS for 14s 52V pack

I’ve built several battery packs with Daly bms’s. They are a great product. Just to be clear. You are building a 14s not a 13s? Why go 8p to push only 20 amp? If it’s more range you want, I would go with a lower discharge battery with a higher capacity. 8 in parallel 25R can handle 160 amps constan...
by Blacksword
Jan 13 2021 7:18pm
Forum: Battery Technology
Topic: Daly or other BMS for 14s 52V pack
Replies: 7
Views: 199

Daly or other BMS for 14s 52V pack

Hi, I am building a 14s8p pack using Samsung 25R cells capable of 160A max. 58.8V charged, 50.4 nominal, which is going to power a 750W hub motor set at 750W ~20AMPs at the controller, nothing crazy. This is my first pack so I am trying to find a top quality BMS, something that's easy to work with, ...
by Blacksword
Jan 13 2021 7:14pm
Forum: Items for Sale - Used
Topic: QS build partout
Replies: 9
Views: 543

Re: QS build partout

Is that mounted in a 26" fat bike tire what is the dropout width.

Asking as I have an old Ice Cream Truck fat bike with 190mm rear dropout I want to put a QS 205 into.
by Blacksword
Jan 13 2021 12:54pm
Forum: E-Bike Technical
Topic: Target wattage from a motor?
Replies: 3
Views: 111

Target wattage from a motor?

Is there a rule of thumb for determining the largest wattage you could get from a motor before it starts to suffer ill effects example a motor rated at 6000w, how much could you reasonably push that 2x, 3x...? Or is it pretty much a case of trying it until things break down. Has anyone tabulated dif...
by Blacksword
Jan 13 2021 9:57am
Forum: Motor Technology
Topic: Sur-ron Motor, Battert and Controller Options
Replies: 0
Views: 47

Sur-ron Motor, Battert and Controller Options

Hi All, Assuming an appropriate battery and controller upgrade, would anyone know how many watts can the stock Sur-ron motor reasonably be pushed to? Are there any ready to fit motor upgrades available for the Sur-ron to go beyond this? How far can you push a stock Sur-ron in Wattage with an ASI BAC...
by Blacksword
Jan 12 2021 9:38am
Forum: E-Bike General Discussion
Topic: eMoto build Frame, QS Motor, choices and what to ask for
Replies: 0
Views: 58

eMoto build Frame, QS Motor, choices and what to ask for

I am moving onto my second build and want to build a emoto style bike I am thinking 10-20kw. I am looking for a US based, or highly reliable supplier of a quality frame and general frame recommendations. I also need a bit more know how on the QS motor choices. I want something to fit the dropouts. I...
by Blacksword
Sep 04 2020 2:37pm
Forum: E-Bike Technical
Topic: Need help with Cycle Analyst/Phaserunner settings, dies on longer hill climbs.
Replies: 10
Views: 199

Re: Need help with Cycle Analyst/Phaserunner settings, dies on longer hill climbs.

Roger that NCC1941. Here is what I found VShutdown was 11.0 Volts so non issue as suggested. I set the CA and Phaserunner to deliver 1800w at 29amps to promote sag . I upped Vlt Cutoff to 45 volts and definitely saw the Cycle Analyst kicking in, it brought my power consumption way down and the bike ...
by Blacksword
Sep 04 2020 2:02pm
Forum: E-Bike Technical
Topic: Need help with Cycle Analyst/Phaserunner settings, dies on longer hill climbs.
Replies: 10
Views: 199

Re: Need help with Cycle Analyst/Phaserunner settings, dies on longer hill climbs.

The plot thickens - the actual battery low voltage cutoff is 36v - I didnt make this pack but checked with my buddy who did. I've set the Cycle Analysts lvc to 42v and watching the display I can see im just about sagging into that at the point the CA shuts down, so I believe its not throttling thing...
by Blacksword
Sep 04 2020 12:11pm
Forum: E-Bike Technical
Topic: Need help with Cycle Analyst/Phaserunner settings, dies on longer hill climbs.
Replies: 10
Views: 199

Re: Need help with Cycle Analyst/Phaserunner settings, dies on longer hill climbs.

Thanks that makes sense. I did a quick experiment halfing the settings to 750w and I was able to coast up the hill. So if I can set it back to 1500w and have the CA just throttle the demand down for me that sounds awesome. Where do you set the soft LVC on the Cycle Analyst and what are relevant valu...
by Blacksword
Sep 04 2020 9:52am
Forum: E-Bike Technical
Topic: Need help with Cycle Analyst/Phaserunner settings, dies on longer hill climbs.
Replies: 10
Views: 199

Re: Need help with Cycle Analyst/Phaserunner settings, dies on longer hill climbs.

Thank you could you explain a bit more - looking to understand, thank you so much for replying. Are you saying when I hill climb I put demand on the battery - this causes a voltage sag in the pack and thus the pack needs to supply more than 30amps in order to maintain the power? How does LVC work an...
by Blacksword
Sep 04 2020 8:56am
Forum: E-Bike Technical
Topic: Need help with Cycle Analyst/Phaserunner settings, dies on longer hill climbs.
Replies: 10
Views: 199

Need help with Cycle Analyst/Phaserunner settings, dies on longer hill climbs.

I am running a Cycle Analyst, a Phaserunner and a Bafang G060.750 750w geared hub motor with a 13s8p 2.2ah lg cells 30amp bms. I set the phaserunner up for 1500w, 30 amp max battery current and 80amps phase current. The bike works swimmingly, big grins all around until I go up longer hills, short st...
by Blacksword
Jul 25 2020 12:19pm
Forum: Motor Technology
Topic: Leafmotor 2000w
Replies: 14
Views: 553

Re: Leafmotor 2000w

Well I would prefer to start with readily available cost effective batteries and voltages since I'm just learning here and will most likely be building a 52v pack. So far I've found quite a few confusing posts on windings but nothing that explains it clearly for a beginner, if someone could turn me ...
by Blacksword
Jul 23 2020 12:13pm
Forum: Motor Technology
Topic: Leafmotor 2000w
Replies: 14
Views: 553

Re: Leafmotor 2000w

Thanks yes sorry 'overclocked' that was a little for effect, I build a lot of PCs, but yes pushing high current and or voltage for the fun of experimentation. I am really not interested in speed, its a bonus 20mph on throttle only would make me happy, but its long slow hill climbing ability I want. ...
by Blacksword
Jul 23 2020 11:04am
Forum: Motor Technology
Topic: Leafmotor 2000w
Replies: 14
Views: 553

Leafmotor 2000w

When asking about fat bike hub motors this week someone pointed me at the Leafmotor and I saw some really excellent threads about leaf motors from the archives. I wondered if anyone has any experience with the 2000w direct drive version of this motor and how much this could be reasonably overclocked...
by Blacksword
Jul 22 2020 4:31pm
Forum: E-Bike General Discussion
Topic: Surly Ice Cream Truck ~132mm bottom brackets and 190mm rear dropouts, choices?
Replies: 13
Views: 748

Re: Surly Ice Cream Truck ~132mm bottom brackets and 190mm rear dropouts, choices?

Fair enough. I called around a bunch of local shops I mentioned lacing and they cringe, I guess its a rare skill around here. I can go find an online service, Id give it a shot but a bit further in scope that I want to go this go around.
by Blacksword
Jul 22 2020 2:51pm
Forum: E-Bike General Discussion
Topic: Surly Ice Cream Truck ~132mm bottom brackets and 190mm rear dropouts, choices?
Replies: 13
Views: 748

Re: Surly Ice Cream Truck ~132mm bottom brackets and 190mm rear dropouts, choices?

I like the idea of the MXUS 3000w, it looks like it may fit a fat bike a little better.

Are there any suppliers who would pre-lace these into an 80mm rim?
by Blacksword
Jul 22 2020 8:08am
Forum: E-Bike General Discussion
Topic: Surly Ice Cream Truck ~132mm bottom brackets and 190mm rear dropouts, choices?
Replies: 13
Views: 748

Re: Surly Ice Cream Truck ~132mm bottom brackets and 190mm rear dropouts, choices?

This bike will be for bikepacking maybe 40 miles a day on road and offroad, some mountain paths - so I expect long hills under load.

Speed is not necessary but a bonus.
by Blacksword
Jul 21 2020 6:35pm
Forum: E-Bike General Discussion
Topic: Surly Ice Cream Truck ~132mm bottom brackets and 190mm rear dropouts, choices?
Replies: 13
Views: 748

Re: Surly Ice Cream Truck ~132mm bottom brackets and 190mm rear dropouts, choices?

Here is the frame spec:

https://surlybikes.com/bikes/legacy/ice ... 6#spec-geo

The rear dropouts are 190mm I am going to look for a powerful hub motor 3k 72v+ that will fit that bracket. If anyone can recommend a specific rear hub motor and supplier I'd appreciate it, thank you.
by Blacksword
Jul 21 2020 1:47pm
Forum: E-Bike General Discussion
Topic: Surly Ice Cream Truck ~132mm bottom brackets and 190mm rear dropouts, choices?
Replies: 13
Views: 748

Re: Surly Ice Cream Truck ~132mm bottom brackets and 190mm rear dropouts, choices?

Thanks MadRhino - its a pf41 on the spec sheet, my caliper must be off. Looks like one of the larger hubs might work, what models can I still reasonable run at 52volts on a bike like this or do I need to go to 72v+ to even power these beasts? I am after hill climbing ability so I guess powering them...
by Blacksword
Jul 21 2020 9:55am
Forum: E-Bike General Discussion
Topic: Surly Ice Cream Truck ~132mm bottom brackets and 190mm rear dropouts, choices?
Replies: 13
Views: 748

Surly Ice Cream Truck ~132mm bottom brackets and 190mm rear dropouts, choices?

I bought an older model Surly Ice Cream Truck frame off ebay and am building it up. I am looking for a solid motor choice, speed isn't necessarily a need but I would like hill climbing ability and something to haul some weight bikepacking. The bottom bracket on this bike is ~132mm wide with a 40mm i...