Search found 538 matches

by Diamondback
May 02 2020 1:40am
Forum: E-Scooter and Motorcycle General Discussion
Topic: Lithium battery upgrade for mobility scooter
Replies: 22
Views: 2067

Re: Lithium battery upgrade for mobility scooter

Update. I spent a few hours today on the scooter. I pulled the motor and removed the armature and brushes. There definitely was some wear and dirt. I polished the commutator and polished the brushes with fine emery paper. Splashed some shellite around also to help clean out the casing and brush hous...
by Diamondback
Apr 27 2020 12:41am
Forum: E-Scooter and Motorcycle General Discussion
Topic: Lithium battery upgrade for mobility scooter
Replies: 22
Views: 2067

Re: Lithium battery upgrade for mobility scooter

I tried to get the rear wheel off today and failed. I don’t have a long enough tool to get enough leverage on the nut. And without the wheel off the motor can’t be removed. So I’ll have to see if i can get to the brushes without removing it. There is a black rubber weather proof cap on the back of i...
by Diamondback
Apr 24 2020 2:16am
Forum: E-Scooter and Motorcycle General Discussion
Topic: Lithium battery upgrade for mobility scooter
Replies: 22
Views: 2067

Re: Lithium battery upgrade for mobility scooter

Yeah. The motor is on a transaxle between the rear wheels. Looks fairly well sealed, though the rubber Boot that seals the motor is not seated properly. I’ll continue investigation tomorrow. I will plug and unplug all the main power wires going to the controller and motor and see if that fixes anyth...
by Diamondback
Apr 23 2020 9:29pm
Forum: E-Scooter and Motorcycle General Discussion
Topic: Lithium battery upgrade for mobility scooter
Replies: 22
Views: 2067

Re: Lithium battery upgrade for mobility scooter

Here’s what I’ve found so far. Leaning more and more towards motor and or brushes. Under load, to the point the scooter actually stops moving, (tested on a hill in reverse so worst case scenario) voltage drops to 25.9V. On a fully charged lifep04 ping 24V pack. Pack was resting voltage overnight. So...
by Diamondback
Apr 23 2020 6:39pm
Forum: E-Scooter and Motorcycle General Discussion
Topic: Lithium battery upgrade for mobility scooter
Replies: 22
Views: 2067

Re: Lithium battery upgrade for mobility scooter

Thanks for the tips.

I’ll be taking a close look at it today and try to see what’s causing it. I’ll start with the motor brushes. As i Suspect that’s the most likely thing, given how new the battery is.

I will report what I find.

Jason.
by Diamondback
Apr 23 2020 1:07am
Forum: E-Scooter and Motorcycle General Discussion
Topic: Lithium battery upgrade for mobility scooter
Replies: 22
Views: 2067

Re: Lithium battery upgrade for mobility scooter

Hi all. I’m back. The lithium upgrade went well with a range of around 35km on a full charge. But we have a new issue now. About a week ago, he managed to get it a little wet. Not flooded. But he did get caught in light rain. Now when starting off there is a bad shudder. Once moving it’s fine. But a...
by Diamondback
Nov 28 2019 2:33am
Forum: E-Scooter and Motorcycle General Discussion
Topic: Lithium battery upgrade for mobility scooter
Replies: 22
Views: 2067

Re: Lithium battery upgrade for mobility scooter

The battery has been installed and works great. First full charge got him just over 30km range and the battery took roughly 27ah to recharge. Plenty of range. Now all I need is to find a decent SOC meter for it. Doesn’t need to be a current shiny type. Just based off voltage would do. So he doesn’t ...
by Diamondback
Nov 08 2019 10:47pm
Forum: E-Scooter and Motorcycle General Discussion
Topic: Lithium battery upgrade for mobility scooter
Replies: 22
Views: 2067

Re: Lithium battery upgrade for mobility scooter

I didn’t know about the drop in option. I’ve already ordered the ping battery. So have to make that work. This particular scooter only uses the 2 pins on the xlr plug. It’s a cheap Chinese import. (Cheap is relative when it comes to mobility scooters) Good point about the weight. Hadn’t considered t...
by Diamondback
Nov 02 2019 7:59am
Forum: E-Scooter and Motorcycle General Discussion
Topic: Lithium battery upgrade for mobility scooter
Replies: 22
Views: 2067

Re: Lithium battery upgrade for mobility scooter

Not with the way he drives already. Lol.

I could hide a “turbo” button somewhere though ;)

Jason.
by Diamondback
Nov 02 2019 4:58am
Forum: E-Scooter and Motorcycle General Discussion
Topic: Lithium battery upgrade for mobility scooter
Replies: 22
Views: 2067

Re: Lithium battery upgrade for mobility scooter

Thanks. I like the 4 pin idea. Edit. Thinking about it, I should be able to achieve this using the current 3 pin xlr charge plug it has now. The negative side of the fan can run to the battery charger directly (scooter side) and the positive line in the charger side plug can be bridged to the 3rd (c...
by Diamondback
Nov 02 2019 12:30am
Forum: E-Scooter and Motorcycle General Discussion
Topic: Lithium battery upgrade for mobility scooter
Replies: 22
Views: 2067

Re: Lithium battery upgrade for mobility scooter

A thermo switch hadn’t really occurred to me. , but given where we are, summer often sees days much hotter than 30°c so would have to be careful that a temp switch doesn’t drain a parked up battery either. The charger we have coming is a 4A unit. And the scooter is only 400W brushless dc. So not too...
by Diamondback
Nov 01 2019 8:53pm
Forum: E-Scooter and Motorcycle General Discussion
Topic: Lithium battery upgrade for mobility scooter
Replies: 22
Views: 2067

Lithium battery upgrade for mobility scooter

Hi all. It’s been quite some time since I posted anything in the forum. Life kinda got In the way. My father (79) has a few health issues and few years ago I bought him a scooter. It’s a 3 wheeler. It has 2x12v sla 28ah (supposedly 28ah) batteries in Series for 24v. The lead is not giving anything l...
by Diamondback
Dec 28 2014 6:57pm
Forum: E-Bike General Discussion
Topic: Aussie 200 Watt Limit Thread
Replies: 1184
Views: 104597

Re: Aussie 200 Watt Limit Thread

Re 3rd party insurance.

Different states do things very differently.

If you are driving an unregistered vehicle in nsw,you have NO 3RD party insurance.
It's the way things are here.

Jason.
by Diamondback
Jul 10 2014 8:24pm
Forum: E-Bike General Discussion
Topic: Aussie 200 Watt Limit Thread
Replies: 1184
Views: 104597

Re: Aussie 200 Watt Limit Thread

We don't have any bike lanes or paths here. David That's a shame for you. Just one of my local councils has over 500km of shared paths. For example, I can ride the entire 22km trip from home to work and not have to ride on one road.Sure I have to cross a few, but I'm not riding on them. Luckily, it...
by Diamondback
Jul 10 2014 9:02am
Forum: E-Bike General Discussion
Topic: Aussie 200 Watt Limit Thread
Replies: 1184
Views: 104597

Re: Aussie 200 Watt Limit Thread

I've been running a "500" watt hub motor on my trike for a few years. Never even had a second glance. Helps that it's hidden in the small rear wheel with panniers on either side. Add to that I'm not a dick where and how I ride, and I don't have any concern at all. In reality, that little hub motor c...
by Diamondback
May 30 2014 10:07pm
Forum: E-Bike General Discussion
Topic: Aussie 200 Watt Limit Thread
Replies: 1184
Views: 104597

Re: Aussie 200 Watt Limit Thread

i have always thought that speed limits (not power limits) were the way to go. i would think 25kmh while on a shared path, and 40kmh elsewhere. then things become very simple for enforcement, and allows sensible power to be used in our bikes. 35kg limit wouldn't do for me. my trike weighs more than ...
by Diamondback
May 06 2014 5:49am
Forum: E-Bike Reviews & Testing
Topic: Cycle Analyst V3 preview and first beta release
Replies: 4561
Views: 818679

Re: Cycle Analyst V3 preview and first beta release

maybe try reducing the throttle up ramp rate ?

Jason
by Diamondback
Apr 25 2014 3:00am
Forum: E-Bike General Discussion
Topic: Aussie 200 Watt Limit Thread
Replies: 1184
Views: 104597

Re: Aussie 200 Watt Limit Thread

Rodney64 wrote: Yes it may make them think. Has anyone tried a truck horn for drivers with an extra bad attitude
i once had an Airzound. its an air horn that is pumped up to 80psi by bike pump, and it's super loud. 110DB i think from memory.

im planning to add another to my trike soon.

Jason.
by Diamondback
Apr 06 2014 6:12am
Forum: E-Bike General Discussion
Topic: System (U, Motor, Controller) Efficiency
Replies: 118
Views: 64419

Re: System (U, Motor, Controller) Efficiency

my CA calculates these numbers for me...
by Diamondback
Mar 19 2014 5:03am
Forum: Battery Technology
Topic: "Zephyr" - Finally, the "v4" Fechter/Goodrum/Hecker BMS...
Replies: 951
Views: 147458

Re: "Zephyr" - Finally, the "v4" Fechter/Goodrum/Hecker BMS.

hi George. i can't help as far as interfacing the zephyr to the DC-DC converter, but as yours (and mine for that matter) is still wired to the batteries the same way as it was originally, even with the DC-DC tripped off by those two wires, there will always be a very small draw from the batteries. t...
by Diamondback
Feb 01 2014 9:19pm
Forum: E-Bike General Discussion
Topic: Active pre-charge/inrush control
Replies: 733
Views: 91335

Re: Active pre-charge/inrush control

that circuit sounds a lot like kfong's intelligent smart switch described here..... http://www.endless-sphere.com/forums/viewtopic.php?f=31&t=32135 it has the anti spark, and LVC, and it also features a timer to shut down power in the even that the rider forgets to turn off or unplug. i have one set...
by Diamondback
Jan 29 2014 5:28am
Forum: E-Bike Reviews & Testing
Topic: Cycle Analyst V3 preview and first beta release
Replies: 4561
Views: 818679

Re: Cycle Analyst V3 preview and first beta release

speed errors are regular on my CA V3.

it's caused by contact bounce in the reed switch.
i routinely see max speeds of over 600kph :)

i think your idea that it has to be sustained for some time before being logged as a valid speed would help eliminate the error.

Jason
by Diamondback
Jan 16 2014 12:56am
Forum: Battery Technology
Topic: "Zephyr" - Finally, the "v4" Fechter/Goodrum/Hecker BMS...
Replies: 951
Views: 147458

Re: "Zephyr" - Finally, the "v4" Fechter/Goodrum/Hecker BMS.

the little relay we used is linked above, it's working fine.

there was zero voltage on these lines with the DC-DC on.
Vincent, the installer measured this.

Jason.
by Diamondback
Jan 15 2014 5:30am
Forum: Battery Technology
Topic: "Zephyr" - Finally, the "v4" Fechter/Goodrum/Hecker BMS...
Replies: 951
Views: 147458

Re: "Zephyr" - Finally, the "v4" Fechter/Goodrum/Hecker BMS.

hi george, yep, shorting those two wires from the DC-DC converter will shut it off. it's still connected to the pack, but it's only drawing milliamps or less. just he leakage current from the large caps inside it. i have updated the thread on priuschat now and the first full charge and discharge cyc...