Search found 5779 matches

by Ykick
Nov 14, 2017 6:56 am
Forum: E-Bike General Discussion
Topic: Source for Q128 motors
Replies: 7
Views: 406

Re: Source for Q128 motors

I looked at the Aikema web site and couldn't determine which motor was which. There also, doesn't seem to be any ordering or price information. I may try communicating with them to see if they sell directly. I tried to talk BMSbattery into using a slower, cheaper shipping method but they only use D...
by Ykick
Nov 02, 2017 5:48 pm
Forum: E-Bike Technical
Topic: Mean-Wells
Replies: 13
Views: 432

Re: Mean-Wells

Rockin' tip.

If you have a moment could you share the measured highest/lowest voltage that model outputs adjusted maximum? Specs show 27-54VDC so if it reaches 54.6V it could be useful solution for 48V pack charging?
by Ykick
Nov 01, 2017 6:26 am
Forum: E-Bike General Discussion
Topic: More ebike questions
Replies: 39
Views: 1259

Re: More ebike questions

s4turn wrote:interesting, battery charges to 54v?
is that normal for a 48v battery?
Li-ion/poly 13S (48V) fully charged = 54.6V Practically empty = about 40V
by Ykick
Oct 31, 2017 12:29 pm
Forum: General Discussion
Topic: Dogman Dans E bike burns his house.
Replies: 172
Views: 11980

Re: Dogman Dans E bike burns his house.

Happy for you Dan! Enjoy, the new'ish digs....
by Ykick
Oct 31, 2017 12:25 pm
Forum: E-Bike Technical
Topic: Mean-Wells
Replies: 13
Views: 432

Re: Mean-Wells

Safe travels road dog… Yeah, this stuff is reaching roughly 1lb per 100Wh and fairly well protected via BMS. Good times! But I would still treat ANY battery pack with care due a large amount of stored energy. Think about where you charge? Avoid messy, flammable areas as much as possible. RC Lipo can...
by Ykick
Oct 30, 2017 4:47 pm
Forum: E-Bike Technical
Topic: Mean-Wells
Replies: 13
Views: 432

Re: Mean-Wells

Other than storage don't mess with 80-90% SOC on any BMS equipped pack. Most BMS will never balance unless charged 100%. In practice, the main thing to avoid is sitting full SOC for more than couple days at time. If you know you won't use a pack for a few days or longer, merely charge to 80%. Do a q...
by Ykick
Oct 26, 2017 8:50 am
Forum: E-Bike General Discussion
Topic: Criminalizing e-biking
Replies: 52
Views: 2167

Re: Criminalizing e-biking

So it's ALL still Obama's fault? Precious, just absolutely precious, ROTFLMAO.... +1 eBike GWB... Bill de Blasio, born and raised Warren Wilhelm, is your standard issue left wing Democratic which has overrun my formerly great party in the last 10 years and ran it into the ground. It should come as n...
by Ykick
Oct 23, 2017 3:11 pm
Forum: E-Bike General Discussion
Topic: Criminalizing e-biking
Replies: 52
Views: 2167

Re: Criminalizing e-biking

Cellphones are more dangerous to the public than eBikes...

de Blasio's a bum and tool for caving to the likes of Jessica Lappin and her cronies with their misplaced irrational vendetta against eBikes.
by Ykick
Oct 22, 2017 11:13 pm
Forum: E-Bike General Discussion
Topic: how about this instead of a bms?
Replies: 7
Views: 393

Re: how about this instead of a bms?

Balance only not for protection.
by Ykick
Oct 21, 2017 10:10 am
Forum: Battery Technology
Topic: Is it OK to replace 40ah scooter batteries with 35ah?
Replies: 27
Views: 759

Re: Is it OK to replace 40ah scooter batteries with 35ah?

SLA capacity ratings when used for EV purposes should be divided in half. In other words, 40Ah labelled SLA capacity is only about 20Ah in the real world. That's why someone mentioned going to Lithium 20Ah and it would deliver the same range as the original 40Ah SLA.
by Ykick
Oct 21, 2017 10:05 am
Forum: E-Bike Non-hub Motor Drives
Topic: Most travelled BBSHD ?
Replies: 8
Views: 867

Re: Most travelled BBSHD ?

Over 2k miles each on both a BBS02 and BBSHD and never greased anything. The 02 got a new controller after getting wet but that’s been the only work I’ve done to either system. I hear some freewheel noise in BBSHD when it releases but until it becomes nastier I’m not gonna bother opening it up. The ...
by Ykick
Oct 20, 2017 11:22 am
Forum: General Discussion
Topic: Any Auto AC Mechanics Here?
Replies: 9
Views: 382

Re: Any Auto AC Mechanics Here?

My shade tree trick to determine if an AC system is undercharged is blocking some air flow from a portion of the condenser coil. If the evaporator air goes colder while some of the “capacity” has been reduced then it can probably use a little more Freon. I learned this by accident on my home AC. Ear...
by Ykick
Oct 07, 2017 8:53 am
Forum: E-Bike Non-hub Motor Drives
Topic: Voltage reading in Display Cable, please advise. BBS02B
Replies: 7
Views: 331

Re: Voltage reading in Display Cable, please advise. BBS02B

Some people use the USB programing cable for troubleshooting display/dashboards. It connects to the display plug and jumpers power ON pins without the risk of applying B+ to the comm wires.
by Ykick
Oct 01, 2017 9:05 pm
Forum: E-Bike Non-hub Motor Drives
Topic: BBSHD 21h error code and its "5 minute ride"....
Replies: 7
Views: 464

Re: BBSHD 21h error code and its "5 minute ride"....

doubledipsoon wrote:Voltron, so if I choose to run this baby in this inconvenient manner, and keep re-turning it on, over and over and over again, am I doing it any harm?
No harm and if you want to prevent it from powering OFF disable the "auto-off" feature under display/dash settings.
by Ykick
Sep 30, 2017 9:23 am
Forum: E-Bike Technical
Topic: Rear Wheel Battery
Replies: 2
Views: 268

Re: Rear Wheel Battery

I believe hub mounted battery pack is one of the dumbest things ever attempted for eBikes. Give 'em credit for trying but seriously, what a mess when something goes wrong.
by Ykick
Sep 28, 2017 10:07 am
Forum: E-Bike General Discussion
Topic: Ebike brakes
Replies: 33
Views: 1300

Re: Ebike brakes

One trick I've learned over the years is that it's often possible to cut open the supplied levers, remove brake switching guts and somehow rework them to whatever levers we need to use.

Hot glue to test positioning of the components and then seal the deal with some Epoxy.
by Ykick
Sep 28, 2017 10:02 am
Forum: E-Bike General Discussion
Topic: What soldering iron do you use for soldering ?
Replies: 18
Views: 622

Re: What soldering iron do you use for soldering ?

Don't need Watts/heat as much as Mass/amount of heat. Hammerhead tips are much harder to find nowadays but check these images to get an idea of large tips (some DIY) which allow soldering heavy gauge wire, connectors and battery tabs: https://www.google.com/search?q=soldering+iron+hammer+head+tip%5B...
by Ykick
Sep 28, 2017 9:52 am
Forum: E-Bike General Discussion
Topic: Differences between different 1000w 48v hub motors
Replies: 4
Views: 403

Re: Differences between different 1000w 48v hub motors

It also depends on the calibration of your speedo. But 35 mph, no wind, maybe even slightly downhill but not enough to see it, is plausible when your battery is full, and 58v with low sag, and if your controller is a 30 amps controller. 58v x 30 amps is 1500 amps after all, with sag very likely you...
by Ykick
Sep 27, 2017 9:03 pm
Forum: E-Vehicles General Discussion
Topic: Dyson EV
Replies: 21
Views: 965

Re: Dyson EV

We recently bought Dyson cordless vacuum - wife and I very impressed and totally satisfied. If they ever do EV's we'll take a serious look. Is there Dyson "hype"? Of course, but the product we bought is actually pretty well thought out and a much better cordless vacuum than the Bissell cordless Swiv...
by Ykick
Sep 23, 2017 6:44 pm
Forum: E-vents
Topic: Interbike 2017, Las Vegas, Sept 18-22 (Mon-Fri)
Replies: 52
Views: 2337

Re: Interbike 2017, Las Vegas, Sept 18-22 (Mon-Fri)

Thanks for the video Luke - enjoy your trip!
by Ykick
Sep 23, 2017 11:57 am
Forum: E-Bike General Discussion
Topic: How do you carry groceries on your ebike?
Replies: 52
Views: 2546

Re: How do you carry groceries on your ebike?

In addition to carrying groceries I can stuff up to 2000Wh battery under the tub and ride crazy distances….
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by Ykick
Sep 23, 2017 11:14 am
Forum: Battery Technology
Topic: What is the "Light Weight" go to "Hobby" Lithium packs
Replies: 43
Views: 1940

Re: What is the "Light Weight" go to "Hobby" Lithium packs

Good to see you Tommy L, ‘wondered what you were up to? Sorry about the missus - I hope your touring gig doesn’t take you too far for too long? I still use combinations of 20C 5Ah RC Lipo with a cheap/small eBay BMS installed for charging only. While discharging the bike LVC will probably catch anyt...
by Ykick
Sep 11, 2017 10:12 am
Forum: E-Bike General Discussion
Topic: 800W Q128c commuter build
Replies: 72
Views: 8065

Re: 800W Q128c commuter build

if the clutch is sticking, I'll guess/predict one of the roller springs ground down and became wedged between roller/drum. Akiema used springs more suitable for ballpoint pens than a bicycle motor, IMO. I eventually found some much hardier, heavier gauge springs which slowed this problem down but ev...
by Ykick
Sep 08, 2017 10:35 am
Forum: Battery Technology
Topic: How can I discharge a 36v battery pack
Replies: 11
Views: 401

Re: How can I discharge a 36v battery pack

Take the element out of an old 2000w heater and dump the power into that. it'll probly run near 6-700w (assuming you're on 110v) if that's too high choose a lower wattage one. Put it in a bucket of water if it needs cooling or blow it with a seperate fan. Old school kettle would probly work too. Pl...
by Ykick
Sep 06, 2017 12:03 pm
Forum: E-Bike General Discussion
Topic: Kit recommendation for hilly commute
Replies: 15
Views: 700

Re: Kit recommendation for hilly commute

BBSHD is the tool for this job, IMO. I see "measurable" chain wear/stretch around 1000 miles. New chain ($12 8spd) at 1st sign of wear to save the more expensive sprockets. Yes, carry a chain breaker and couple master links in case of chain suck and it damages the chain plates and breaks. Very rare ...