Search found 1416 matches

by SlowCo
May 20 2020 5:26pm
Forum: E-Bike Technical
Topic: 2wd hub motor build
Replies: 9
Views: 217

Re: 2wd hub motor build

1263 wrote:
May 20 2020 3:12pm
Any suggestions?
Use a mid drive instead of two hubs... :wink:
by SlowCo
May 04 2020 3:45am
Forum: E-Bike Non-hub Motor Drives
Topic: Sur-Ron - New Mid drive Bike
Replies: 4930
Views: 503428

Re: Sur-Ron - New Mid drive Bike

I think (rotational) weight wise a narrow 19" tire in 2.25 or 2.5 width will work best for on road use. And that are mostly tires meant for classic mopeds as I linked to last.
by SlowCo
May 03 2020 10:48am
Forum: E-Bike Non-hub Motor Drives
Topic: Sur-Ron - New Mid drive Bike
Replies: 4930
Views: 503428

Re: Sur-Ron - New Mid drive Bike

This one might be even better: https://en.reifenwerk-heidenau.com/modules/reifenliste/view.php?lang=en&point=1&rtyp=15&PHPSESSID=hdojfj1bjlder5u21qd3dsus06&profil=2&pic=78 It's a classic 2.25-19 moped tire so will probably be lighter than the 19" motorcycle tires. If you search online for moped tire...
by SlowCo
May 03 2020 7:19am
Forum: E-Bike Non-hub Motor Drives
Topic: Sur-Ron - New Mid drive Bike
Replies: 4930
Views: 503428

Re: Sur-Ron - New Mid drive Bike

Hello everyone. Sur-ron/forum newb here. Been trying to figure out what kind of tyres I can fit on the stock rims. I ride almost 100% street, and the knobby stock tyres don't feel all that great on asphalt. Been seeing some dimensions other than 70/100 mentioned here, but not entirely sure what oth...
by SlowCo
May 01 2020 2:52pm
Forum: E-Scooter and Motorcycle General Discussion
Topic: Super Soco TS Upgrade
Replies: 10
Views: 597

Re: Super Soco TS Upgrade

Doesn't matter. As soon as you change parts on the bike the type approval (typegoedkeuring) will be void and the vehicle needs to be presented to the authorities (RDW) for an individual approval test. It's basically putting a 125cc engine in a 50cc moped and thinking it's not a problem because you r...
by SlowCo
May 01 2020 1:40pm
Forum: E-Scooter and Motorcycle General Discussion
Topic: Super Soco TS Upgrade
Replies: 10
Views: 597

Re: Super Soco TS Upgrade

For the Super Soco TCMax you will need a motorcycle drivers licence compared to the TS where a car drivers license is sufficient. :lol: So you're going to build a DIY TC Max which will not be examined by the authorities (RDW individuele keuring). That will become an electric motorcycle instead of a...
by SlowCo
May 01 2020 11:28am
Forum: E-Scooter and Motorcycle General Discussion
Topic: Super Soco TS Upgrade
Replies: 10
Views: 597

Re: Super Soco TS Upgrade

-0ckraFu8q8 Have you already removed the 45(50)km/u speed limit? Then just add a second battery for less voltage sag (stronger acceleration) and longer range. But be advised that you will be riding uninsured with the higher top speed. Or just get the Super Soco TC max: https://webshop.lucdebondt.be...
by SlowCo
Apr 28 2020 4:59am
Forum: E-Scooter and Motorcycle Photos & Videos
Topic: Suzuki GSX-R e899 K2
Replies: 439
Views: 72926

Re: Suzuki GSX-R e899 K2

The sprocket seems to be ready now … But the motor STP-file I got does not fit for 100%, there is a 1/10 bis 3/10 gap :cry: So we have to do the cut out again. The tooth profile seems to be incorrect and/or too large. How were the splines made? Laser cut, CNC ground or else? Because the way the spl...
by SlowCo
Apr 22 2020 11:02am
Forum: E-Bike Non-hub Motor Drives
Topic: Sur-Ron - New Mid drive Bike
Replies: 4930
Views: 503428

Re: Sur-Ron - New Mid drive Bike

Is there any tires in 19" range for on road use? Heidenau has some 19" road tires: https://en.reifenwerk-heidenau.com/modules/reifenliste/view.php?lang=en&point=2&rtyp=10&PHPSESSID=qtsa9ilhdfkfl50enpah1jepk4&profil=6&pic=29 https://en.reifenwerk-heidenau.com/modules/reifenliste/view.php?lang=en&poi...
by SlowCo
Apr 21 2020 3:13pm
Forum: Battery Technology
Topic: 48v lifepo4 battery only charging upto 50v
Replies: 63
Views: 1210

Re: 48v lifepo4 battery only charging upto 50v

Rassy wrote:
Apr 21 2020 2:08pm
Just to be clear, I am not advising that any batteries be abused, but the voltages for LiFePO4 are a little higher than for other Lithium chemistries, with the added plus of the chemistry not being as volatile when abused.
I hope you mean lower voltage?
by SlowCo
Apr 20 2020 10:23am
Forum: Motor Technology
Topic: KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW)
Replies: 4018
Views: 363318

Re: KT motor controllers -- Flexible OpenSource firmware for BMSBattery S/Kunteng KT motor controllers (0.25kW up to 5kW

sascha121985 wrote:
Apr 20 2020 1:56am

- I have a rear hub motor with 1000W.
Then why are you using a 500W controller? And are you using regenerative braking with that 1kW hub?
Just get a 1500W controller if your battery and BMS can handle it.
by SlowCo
Apr 20 2020 10:18am
Forum: E-Scooter and Motorcycle Photos & Videos
Topic: Denzel 72v 4-spd Gearbox Build 125cc Dual Sport
Replies: 94
Views: 9901

Re: Denzel 72v 4-spd Gearbox Build 125cc Dual Sport

skeetab5780 wrote:
Apr 20 2020 8:49am
The motor jerks the chain a bit before engaging fully, may need to tighten the chain a bit more.. but when my 230lb butt gets on the bike its pretty tight
Maybe a spring loaded chain tensioner might help?
by SlowCo
Apr 20 2020 7:53am
Forum: E-Scooter and Motorcycle Photos & Videos
Topic: Denzel 72v 4-spd Gearbox Build 125cc Dual Sport
Replies: 94
Views: 9901

Re: Denzel 72v 4-spd Gearbox Build 125cc Dual Sport

Great result so far :thumb:
Was that the police siren in the background in the last seconds? Just before you were caught... :lol:
by SlowCo
Apr 18 2020 5:50am
Forum: E-Bike Technical
Topic: how to make a proportional regen ebrake lever
Replies: 15
Views: 628

Re: how to make a proportional regen ebrake lever

That seems to be a very heavy and overkill solution to "only" get regenerative braking. I like the pressure transducer idea when put inline with a normal hydraulic brake system.
by SlowCo
Apr 18 2020 5:45am
Forum: E-Vehicles General Discussion
Topic: C Cab Hot Rod Power Advice
Replies: 397
Views: 23633

Re: C Cab Hot Rod Power Advice

Great work again and it is turning out beautiful! :thumb:
by SlowCo
Apr 14 2020 5:31am
Forum: E-Bike General Discussion
Topic: E-S LMX 64 Bike Owners
Replies: 601
Views: 65833

Re: E-S LMX 64 Bike Owners

I think the belt still has a chance. I think the 15T will make a big difference and if we can get the 14T in steel that will also help. The noise of the chain is pretty bad...I don't think I could go back TBH. I'm a stubborn guy, so I'll find a way to make the belt work. Maybe a roller/guide wheel ...
by SlowCo
Apr 12 2020 11:27am
Forum: Battery Technology
Topic: 48v lifepo4 battery only charging upto 50v
Replies: 63
Views: 1210

Re: 48v lifepo4 battery only charging upto 50v

Does the charger shut off at 50.7V? Or could it be you need to let it charge longer? Normally a CC/CV charger will charge with a constant current up to a certain voltage and then switch to constant voltage with low current. I suspect your charger is not dialed in correctly. Do you have a manual with...
by SlowCo
Apr 12 2020 10:15am
Forum: Battery Technology
Topic: 48v lifepo4 battery only charging upto 50v
Replies: 63
Views: 1210

Re: 48v lifepo4 battery only charging upto 50v

Normally a "48V" LiFePo4 battery pack is 16S instead of 15S. LiFePo4 cells usually need to be charged to >3.45V for the BMS to start balancing. If you have a 15S LiFePo4 pack your charger should have a charging voltage of around 54.8V when not connected to the battery pack. So maybe your charger isn...
by SlowCo
Apr 06 2020 3:30pm
Forum: E-Bike General Discussion
Topic: a speed electric bike, looking something with a big battery
Replies: 15
Views: 397

Re: a speed electric bike, looking something with a big battery

You need to read up on the difference between watt (W) and watt-hour (Whr) first.

Then just buy a far too expensive speedpedelec and get an extra battery pack (or two) to swap during a ride to get the desired range.
by SlowCo
Apr 03 2020 2:04pm
Forum: E-Vehicles General Discussion
Topic: Brushless controller for a vehicle (go-kart) on Europe
Replies: 2
Views: 348

Re: Brushless controller for a vehicle (go-kart)

Maybe a KT controller (3kW or 5kW) might be of interest. There is support and open source firmware for it here on E-S:

viewtopic.php?f=30&t=87870
by SlowCo
Apr 03 2020 1:56pm
Forum: E-Bike Technical
Topic: how to make a proportional regen ebrake lever
Replies: 15
Views: 628

Re: how to make a proportional regen ebrake lever

Great work and thanks for making this tutorial :thumb:
by SlowCo
Mar 31 2020 8:47am
Forum: E-Scooter and Motorcycle General Discussion
Topic: Vespa style electric scooter
Replies: 7
Views: 348

Re: Vespa style electric scooter

Just find an electric scooter/moped with dead lead acid batteries and convert it to Li-ion. I bought an almost new one that had been standing too long unused. I then put in a battery pack from AliExpress (research the best sellers) and am driving it for 2 years and >10.000km already. If you really w...
by SlowCo
Mar 28 2020 2:08pm
Forum: E-Scooter and Motorcycle General Discussion
Topic: Observed trials bike designing
Replies: 98
Views: 6038

Re: Observed trials bike designing

That looks very well built!
For what top speed is it geared?
by SlowCo
Mar 10 2020 4:49am
Forum: E-Scooter and Motorcycle General Discussion
Topic: What features do you miss in e-motorcycles?
Replies: 10
Views: 694

Re: What features do you miss in e-motorcycles?

viktorsommer wrote:
Mar 10 2020 2:40am
However, I am not sure what I should add ^^
I think an electric motor and controller to start with... :wink:

What are you planning for the drive train?