Search found 30 matches

by Slipstream
Apr 26 2021 12:34pm
Forum: EBike Build Threads
Topic: Claude Butler Hardtail / DIY Hoverboard Mid Drive ...
Replies: 4
Views: 308

Re: Claude Butler Hardtail / DIY Hoverboard Mid Drive ...

@technotony007 ... yes its a nice frame ... ally though ... bending the dropouts out for a wide rear axle would be nervewracking. Bafang / ebay / chinese mid drive stuff a long way out of my budget for this. @HrKlev ... Hi ... no idea on weight yet ... will let you know when I get one... Possibly so...
by Slipstream
Apr 22 2021 11:45am
Forum: EBike Build Threads
Topic: Claude Butler Hardtail / DIY Hoverboard Mid Drive ...
Replies: 4
Views: 308

Claude Butler Hardtail / DIY Hoverboard Mid Drive ...

Sooo... Bought this on an impulse the other day - it was sitting in a garden I pass by regularly with a broken derailure hanger and the guy sold it to me for £50. IMG_20210417_104038.jpg Replaced hanger. Reset brakes. Oil and rag. There seems to be some sort of problem with the forks (could well be ...
by Slipstream
Apr 22 2021 4:52am
Forum: EBike Technical
Topic: [SOLVED] Balance Discharger... or is there anything else?
Replies: 43
Views: 1464

Re: [SOLVED] Balance Discharger... or is there anything else?

Hi Lew ... sorry ... yes ... edited above with correct info.

I ended up with the ISDT Q8.

: )
by Slipstream
Apr 16 2021 6:30am
Forum: Electric Aircraft
Topic: Blackfly AEV
Replies: 10
Views: 1853

Re: Blackfly AEV

@Opener (for_solarsail) ... Thanks for the Video! Sorry for the time it has taken for me to spot your post! Inspirational work ... novel design ... certainly. Disruptive (in a good way) to the model of air transport (outside of GA) that is currently available? Not yet due to range limitation. More r...
by Slipstream
Apr 16 2021 3:55am
Forum: EBike Technical
Topic: [SOLVED] Balance Discharger... or is there anything else?
Replies: 43
Views: 1464

Re: [SOLVED] Balance Discharger... or is there anything else?

A few charges done now. The ISDT Q8 charger has my rows within 0.01 of a volt of each other so no need for further balancing. This is a bit of a miracle, actually, because my packs are made up of second hand cells, and a pretty good mix at that. In fact ... this has solved my problem. Niggles remain...
by Slipstream
Apr 02 2021 7:08pm
Forum: EBike Technical
Topic: [SOLVED] Balance Discharger... or is there anything else?
Replies: 43
Views: 1464

Re: Balance Discharger... or is there anything else?

Thanks Lew ... I hadn't seen anything like this up until now.

As things stand the m8 seems to be doing ok... I have yet to try the "calibrate" function which may improve matters.
by Slipstream
Apr 02 2021 5:50pm
Forum: EBike Technical
Topic: Volimart 1500w wheel doesnt stop spinning
Replies: 3
Views: 188

Re: Volimart 1500w wheel doesnt stop spinning

This is what happens in the rain with those throttles from Voilamart... thing gets wet (short) and PoW! full WOT powah!!!

There may be a problem with that throttle ... try another.
by Slipstream
Apr 02 2021 5:38pm
Forum: EBike Technical
Topic: [SOLVED] Balance Discharger... or is there anything else?
Replies: 43
Views: 1464

Re: Balance Discharger... or is there anything else?

Thanks LewTwo ... thought I had bought a sealed unit there so good news it CAN be dismantled. A balance lead header is a good idea on the basis that if you balls up the connector it is a cheap and easy fix ... not so much if you break the cable header on the box itself! Issue: On my 8s batteries the...
by Slipstream
Mar 31 2021 3:29am
Forum: EBike Technical
Topic: [SOLVED] Balance Discharger... or is there anything else?
Replies: 43
Views: 1464

Re: Balance Discharger... or is there anything else?

Thanks for the feedback, John. The ISDT Q8 unit... First problem ... non standard balance port header... standard JST cable won't fit. My solution ... burn out the non standard blocks with a hot probe... then add a standard male/female cable so the port itself takes less abuse when the balance cable...
by Slipstream
Mar 28 2021 8:13am
Forum: EBike Technical
Topic: [SOLVED] Balance Discharger... or is there anything else?
Replies: 43
Views: 1464

Re: Balance Discharger... or is there anything else?

Here is the replacement: isdt-q8.jpg ISTD 8Q https://www.isdt.co/qseries.html?lang=en Input voltage: 10-34V - DC voltage Input current max: 20A Output voltage: 1-34V Charging power: 500W (from 27V input voltage) Discharge power: 15W Charging current: 0.1-20A Discharge current : 0.1-1.5A Balancer cur...
by Slipstream
Mar 17 2021 3:36am
Forum: EBike Technical
Topic: [SOLVED] Balance Discharger... or is there anything else?
Replies: 43
Views: 1464

Re: Balance Discharger... or is there anything else?

ToolkitRC M8 charger blew up (tiny pop noise then no function) yesterday. Am now using the XL6019 board ^^ above + diode + voltmeter to charge the batteries. Oddly quicker than charging with the now dead M8 ... approx 1/2 the time to 70% ish which brings me to about 4-5 hours for a charge for all 4 ...
by Slipstream
Mar 03 2021 2:48am
Forum: EBike Technical
Topic: [SOLVED] Balance Discharger... or is there anything else?
Replies: 43
Views: 1464

Re: Balance Discharger... or is there anything else?

+1 ... wish I knew more. DIY ebikes are a steep learning curve - beyond my initial skill set by some margin. Initially ... as the motor was 48v I went for 2x6s6p, with a pair of chinese BMS 6s. The result was so bad it only went out once. Removed the bms... went to 7s... still fairly poor. 2x8s prov...
by Slipstream
Mar 03 2021 1:56am
Forum: EBike Technical
Topic: [SOLVED] Balance Discharger... or is there anything else?
Replies: 43
Views: 1464

Re: Balance Discharger... or is there anything else?

I never leave the packs charging un-attended, and do not charge >75%. Also an alarm clock set on 1/2 or 1/4 hr intervals so I regularly check the thing manually. Also a fire blankey. Also charge area is on a metallic sink. Problems? Push it into the sink, cover in fire blankey, extractor on, and eva...
by Slipstream
Mar 02 2021 3:52pm
Forum: EBike Technical
Topic: [SOLVED] Balance Discharger... or is there anything else?
Replies: 43
Views: 1464

Re: Balance Discharger... or is there anything else?

Thanks for the comment D.

12 hour charge time here currently. Will probably buy one and try it.
by Slipstream
Mar 01 2021 5:07am
Forum: EBike Technical
Topic: [SOLVED] Balance Discharger... or is there anything else?
Replies: 43
Views: 1464

Re: Balance Discharger... or is there anything else?

Nice solution Bob ... thanks. So these little gizmo boxes can balance larger batteries! I was hoping that someone here was using the Overlander (8s) box ^^ above and could tell me how well it was. On that note ... anyone using one of these below? Cellpro PL8 PL6 308/3010/4010 2~8S Battery Charger Ba...
by Slipstream
Feb 27 2021 4:25am
Forum: EBike Technical
Topic: [SOLVED] Balance Discharger... or is there anything else?
Replies: 43
Views: 1464

Re: Balance Discharger... or is there anything else?

:) Wired myself into a corner hehe In defence the 4x 8s6p design was trial and error --- simply kept adding rows and batteries until performance was acceptable. The m8 charger was the cheapest out there (a year ago) that managed 8 cells in series. The fans wore out in month 13 ... pretty noisy now. ...
by Slipstream
Feb 26 2021 12:27pm
Forum: EBike Technical
Topic: [SOLVED] Balance Discharger... or is there anything else?
Replies: 43
Views: 1464

Re: Balance Discharger... or is there anything else?

Many thanks guys ... will look into your suggestions.
by Slipstream
Feb 26 2021 3:29am
Forum: EBike Technical
Topic: [SOLVED] Balance Discharger... or is there anything else?
Replies: 43
Views: 1464

[SOLVED] Balance Discharger... or is there anything else?

Problem: 8s6p lithium diy battery balance charger fails to bring rows to balance. Currently using: ToolKitRC M8 300W Charger Does not actually manage to balance a battery ... for me anyway. Overlander 3250 8S Battery Capacity Meter, Balance Discharger, Servo Tester £14 ... Would this help me flatten...
by Slipstream
Sep 26 2020 5:59am
Forum: Electric Aircraft
Topic: Blackfly AEV
Replies: 10
Views: 1853

Re: Blackfly AEV

Have linked them this thread. Maybe they will comment.
by Slipstream
Sep 18 2020 3:48am
Forum: EBike Technical
Topic: [SOLVED] Stuttering hub motor ... n..n..nooooo!
Replies: 12
Views: 572

Re: [SOLVED] Stuttering hub motor ... n..n..nooooo!

The connectors appear to have fused solid from the short so I will probably have to cut them off and replace with something suitable. I will post some pictures later.

Exeter, eh? I hesitate to say it ... Exeter Chapter of ES?

:)
by Slipstream
Sep 16 2020 12:44am
Forum: EBike Technical
Topic: [SOLVED] Stuttering hub motor ... n..n..nooooo!
Replies: 12
Views: 572

Re: [SOLVED] Stuttering hub motor ... n..n..nooooo!

It's worse than you think ... I still haven't found a fuse holder I like so ... fuseless!

:? :oops: :shock:
by Slipstream
Sep 15 2020 4:48pm
Forum: EBike Technical
Topic: [SOLVED] Stuttering hub motor ... n..n..nooooo!
Replies: 12
Views: 572

Re: Stuttering hub motor ... n..n..nooooo!

So... a look at my wiring in daylight revealed scorches around the three phase wire (UVW) connectors from controller to hub. It seems the insulating sleeve on one of these had ridden down allowing one to short, heat up and melt the rest. Totally not what I was expecting. A bit of tape around the sco...
by Slipstream
Sep 14 2020 12:01pm
Forum: EBike Technical
Topic: [SOLVED] Stuttering hub motor ... n..n..nooooo!
Replies: 12
Views: 572

Re: Stuttering hub motor ... n..n..nooooo!

:) thanks guys - recharging batteries now will let you know tomoz how it is.
by Slipstream
Sep 14 2020 6:07am
Forum: EBike Technical
Topic: [SOLVED] Stuttering hub motor ... n..n..nooooo!
Replies: 12
Views: 572

Re: Stuttering hub motor ... n..n..nooooo!

Thanks Tom - it developed yesterday and, yes, I rode a further 10 miles or so after I first realised (up some very steep hills!)

:oops:
by Slipstream
Sep 14 2020 4:56am
Forum: EBike Technical
Topic: [SOLVED] Stuttering hub motor ... n..n..nooooo!
Replies: 12
Views: 572

Re: Stuttering hub motor ... n..n..nooooo!

Thanks John ... I think you n...n...nailed it ... had n..n..not considered it could be a problem with electrical dimensions! Yes... I will check the bearing by your method this morning but I see n..n..now it is most likely a hall sensor fail from symptoms described elsewhere here. Arse. 1) check the...