Search found 1804 matches

by SlowCo
Dec 02 2021 4:49pm
Forum: Electric Watercraft
Topic: Getting Into Electric Power Catamarans
Replies: 84
Views: 3955

Re: Getting Into Electric Power Catamarans

Very good speed!
by SlowCo
Dec 02 2021 3:56pm
Forum: EScooters/EMotorcycles
Topic: Optimum Battery set up for my EV scoot Spec?
Replies: 28
Views: 371

Re: Optimum Battery set up for my EV scoot Spec?

Big thanks -675 is the one. I just watched an excellent You tube video on battery building by Lee Wright and realised I had screwed up on the battery count! If you want to read about battery pack building here on E-S, then look in these threads: https://endless-sphere.com/forums/viewtopic.php?f=14&...
by SlowCo
Dec 02 2021 3:23pm
Forum: EScooters/EMotorcycles
Topic: Optimum Battery set up for my EV scoot Spec?
Replies: 28
Views: 371

Re: Optimum Battery set up for my EV scoot Spec?

Ah, I thought you meant 375 cells. Either way, the OP should understand that the number of cells in series gives the total voltage (27S @ 4.2V = 113.4V) and the number of parallel cell groups (27 cells in series) gives the maximum amps (25P @ 15A = 375A, 25P @ 20A = 500A). And that a 27S25P battery ...
by SlowCo
Dec 02 2021 2:57pm
Forum: EScooters/EMotorcycles
Topic: Optimum Battery set up for my EV scoot Spec?
Replies: 28
Views: 371

Re: Optimum Battery set up for my EV scoot Spec?

dominik h wrote:
Dec 02 2021 2:45pm
25x15=375😉
Where did you get the 15 from when the OP states 27S25P...?
by SlowCo
Dec 02 2021 2:30pm
Forum: EScooters/EMotorcycles
Topic: Optimum Battery set up for my EV scoot Spec?
Replies: 28
Views: 371

Re: Optimum Battery set up for my EV scoot Spec?

I have gone with the following battery set up; ....27S25P.... I will use 18650's Samsung 30Q, 3000 mAh, 3.6v, Discharge 15A. That calc's to 1125A..think that will do! 52 batteries comes in at 2.4 Kg, which does not seem too bad- I will save that weight in changes I'm making to the Lambretta panelli...
by SlowCo
Dec 02 2021 10:02am
Forum: Items for Sale - Used
Topic: [EU, Germany] [740€] Super Soco 2,5 kWh battery
Replies: 2
Views: 68

Re: [EU, Germany] [740€] Super Soco 2,5 kWh battery

c.wagner wrote:
Dec 02 2021 4:26am
Selling an original Super Soco battery from a sharing-CUX e scooter.
How did you get that battery if it's from a sharing scooter? Hope it wasn't stolen?
by SlowCo
Dec 02 2021 9:12am
Forum: Large EV General Discussion
Topic: Electric kart
Replies: 246
Views: 53289

Re: Electric kart

Hello In 2018-19, we built a children's kart, on which we installed a modified 6 kW AC motor, a 24-felt controller of our own design and a Nissan Leaf 36v battery. Great work and nice project :thumb: Could you start a thread about your build especially the controller and motor you used for this kar...
by SlowCo
Dec 02 2021 7:02am
Forum: EScooters/EMotorcycles
Topic: RE Class full sized scooter
Replies: 10
Views: 155

Re: RE Class full sized scooter

Niu MQi GT Evo.png
Niu MQi GT Evo.png (448.64 KiB) Viewed 39 times


https://www.niu.com/en/product/mqi-gt-evo
From 2:25 min. in this video:





Is that the kind of big "125cc equivalent" scooter you're looking for?
by SlowCo
Dec 02 2021 1:55am
Forum: EScooters/EMotorcycles
Topic: RE Class full sized scooter
Replies: 10
Views: 155

Re: RE Class full sized scooter

Sounds like a great plan to commute with a scooter on the highway at 100km/h in a dress... Having done it myself, its not as breezy on the nethers as you would expect. The big front fairing stops all but the most vigorous crosswinds. Yes, it's the crosswinds that you should be worried most about. N...
by SlowCo
Dec 01 2021 3:45pm
Forum: EScooters/EMotorcycles
Topic: RE Class full sized scooter
Replies: 10
Views: 155

Re: RE Class full sized scooter

Sounds like a great plan to commute with a scooter on the highway at 100km/h in a dress...
by SlowCo
Nov 29 2021 10:39am
Forum: EScooters/EMotorcycles
Topic: Optimum Battery set up for my EV scoot Spec?
Replies: 28
Views: 371

Re: Optimum Battery set up for my EV scoot Spec?

Thanks for alot for the info & Thread tip.Really appreciated. If you haven't found it yet, this sub section of the forum has many threads with scooter and motorcycle builds with lots of valuable info: https://endless-sphere.com/forums/viewforum.php?f=12 Especially this thread: https://endless-s...
by SlowCo
Nov 29 2021 7:13am
Forum: EScooters/EMotorcycles
Topic: Optimum Battery set up for my EV scoot Spec?
Replies: 28
Views: 371

Re: Optimum Battery set up for my EV scoot Spec?

I'm building a EV scoot from scratch and looking for the optimum battery set up, I have plenty of package space for the batteries but a bit stuck on what set up to go for to get the best out of hub motor and controller. Look in Ripperton's scooter thread as he is building a serious battery pack: ht...
by SlowCo
Nov 29 2021 7:10am
Forum: EScooters/EMotorcycles
Topic: Optimum Battery set up for my EV scoot Spec?
Replies: 28
Views: 371

Re: Optimum Battery set up for my EV scoot Spec?

Here's an electric scooter for you: https://www.walmart.com/ip/Razor-Black-Label-E90-Electric-Scooter-Kids-Ages-8-120-lbs-Up-10-mph-40-mins-Ride-Time-90W-Power-Core-High-Torque-Hub-Motor/590441042 In Europe this is a scooter: Electric scooter.jpg https://www.motorcyclenews.com/bike-reviews/niu/nqi-...
by SlowCo
Nov 25 2021 8:35am
Forum: Electric Watercraft
Topic: Getting Into Electric Power Catamarans
Replies: 84
Views: 3955

Re: Getting Into Electric Power Catamarans

There must be higher pitch/faster (aftermarket) props from different manufacturers that can be made to fit? In the trolling motor world there are guys making their own props or using model aircraft props with surprising results (higher speeds @ less amps so longer trips): QfNWmJ2DbgM hIXckCOSuWg
by SlowCo
Nov 21 2021 6:11pm
Forum: E-Vehicles General Discussion
Topic: DIY OpenSource display for EVs, TSDZ2 EBike motor and Xiaomi scooter
Replies: 18
Views: 639

Re: DIY OpenSource display for EVs, TSDZ2 EBike motor and Xiaomi scooter

Very nice development :thumb:
Thanks for all your open source design work.
by SlowCo
Nov 20 2021 5:28pm
Forum: EBike Build Threads
Topic: Aluminum frame for QS120 (illegalbike) ??W / ??kg
Replies: 13
Views: 575

Re: Aluminum frame for QS120 (illegalbike) ??W / ??kg

I will follow your thread. Hope it turns out as good or better than your previous builds :thumb:
by SlowCo
Nov 20 2021 5:22pm
Forum: EBike Build Threads
Topic: First timer. Ultra green.
Replies: 16
Views: 413

Re: First timer. Ultra green.

Are those bikes for people with disability (very short legs and very long arms...)?
The ergonomics look awful to actually pedal them.
by SlowCo
Nov 19 2021 3:00pm
Forum: Battery Technology
Topic: APL's Pressure Contact Battery box
Replies: 139
Views: 3766

Re: APL's Pressure Contact Battery box

Your very labor intensive way of building a battery pack is a good reminder that spot welding is the best DIY way to go... :mrgreen:
by SlowCo
Nov 18 2021 12:40pm
Forum: Battery Technology
Topic: APL's Pressure Contact Battery box
Replies: 139
Views: 3766

Re: APL's Pressure Contact Battery box

Would DIY nickel plating be doable? First flatten the dimples on flat surface with sandpaper and then nickel plate them.
by SlowCo
Nov 18 2021 1:55am
Forum: EScooter/EMotorcycle Build Threads
Topic: '91 Suzuki DR 250S
Replies: 18
Views: 532

Re: '91 Suzuki DR 250S

The placement of the motor sprocket seems to be much higher than on ICE engined bikes. I think it should be lowered 5cm (or more) and checked with compressed suspension when on the ground with all the weight including rider on it.
by SlowCo
Nov 17 2021 8:11am
Forum: General Discussion
Topic: Eternal outskirts of Moscow and beyond (LOTS of pics!)
Replies: 438
Views: 26091

Re: Eternal outskirts of Moscow and beyond (LOTS of pics!)

That is some serious mud riding :shock:
Great photo's again :thumb:
by SlowCo
Nov 16 2021 3:56pm
Forum: Battery Technology
Topic: APL's Pressure Contact Battery box
Replies: 139
Views: 3766

Re: APL's Pressure Contact Battery box

After the layer of solder you could flatten the dimpled strips on a flat surface with sandpaper on it.
by SlowCo
Nov 16 2021 7:50am
Forum: EBike Build Threads
Topic: 4kW? Axum 29er Cyclone Build
Replies: 10
Views: 313

Re: 4kW? Axum 29er Cyclone Build

Indeed a very nice build.
But I would suggest placing the battery pack in the triangle for much better weight distribution.
by SlowCo
Nov 16 2021 5:57am
Forum: Electric Watercraft
Topic: Getting Into Electric Power Catamarans
Replies: 84
Views: 3955

Re: Getting Into Electric Power Catamarans

The cavitation would indicate that a different prop could bring even higher top speed without the ventilation and be more efficient. I would hook up a watt meter to see how much amp draw there is at different intervals/speeds. And try an even larger/higher pitch prop to see the difference.