Montag, 13. November 2017

eViking: Let's Wait fast

eViking: Let's Wait fast: Converting an ATV to electric is a very tricky thing. Solving one problem will cause three new ones. I started to work on a smaller version ...

Sonntag, 17. Januar 2016

Silent As An Owl

In Shanghai/China they have millions of electric scooters and kick scooters.
You have to be very vigilant, crossing the road because they are silent as an owl.
Electric drive is very popular in China and there are also more and more electric cars every day.
This is how they charge them.

Mittwoch, 22. April 2015

Full Electric

Elektra becomes a full electric super silent camera car with 3Kw "grid power" on board to go for 202+ Km or 20h Arri M18 film light, or 100 Km and 10h M18 light.

Mittwoch, 11. März 2015

Plus an Masse, das knallt klasse!

I killed my iCharger because..
One MOSFET was definitive killed by wrong polarity @40 volts.
But the new transistor could not save my charger__

Thanks Franz for the thick cold board soldering info. THAT was working.)

Samstag, 7. März 2015

No more clicks from the Ukraine

This was the only electric car in Donetsk.
I hope my "ev-friends" from the Ukraine are ok.

Я ненавиджу війну і бажаю вам миру!

Dienstag, 10. Februar 2015

Infrared View

The Flir One is an iphone infrared camera which allows me to check my battery cell connections in seconds.

Dienstag, 20. Mai 2014

Buddy Balance

I am checking and balancing 22 Calb CA60 cells for a friend.
First I am checking each cell voltage and label it. There was one cell with a higher voltage.
While I was charging the whole pack in series, I already had to balance this cell with a 0,1 ohm resistor because the voltage was going up in the sky.
At the end I had a pregnant cell.
A sure sign for a dead cell.(

Donnerstag, 6. März 2014

EVDrive 31/2013 Half Turn - Double Force (How to double the spring press...

How to double the spring pressure in a WarP9
It's long, it's tough. it's boring....but I had to figure out how to do it.
And all the failures show how it does not work.

Mittwoch, 5. März 2014

Tesla Fuse Connection

Tobias  has a battery module from a Tesla Roadster.
The 18650 batteries are connected with a small wire to the main board that works like a fuse. When the current is getting too high because of a bad cell, the wire melts and this battery is out of the pack.

Donnerstag, 6. Februar 2014

La Siesta Mexicana

Three weeks holiday. Even when it's not easy not to be electric.)
First time in Mexico.
Love it.

Sonntag, 15. Dezember 2013

High Fly

First "live" stream show from 37,000ft attitude and 407 kts speed.)

And a beer of course.

Samstag, 17. August 2013

New Electric

Today I visited EVTV Amsterdam.
Anne Kloppenborg from New Electric.
He has his shop full with stuff you need to build your electric dream.

Sonntag, 14. Juli 2013


We have seen the red balance putty flying away.
 And we have seen the yellow balance putty flying away...
Let's try the "German Green".

Samstag, 22. Juni 2013

Mittwoch, 5. Juni 2013

Swiss Job

In a six hours night shift I was able to fix the front axle.
 ...and made a good test shot four hours later.)

Dienstag, 28. Mai 2013

Serious Problem

The good news is: She made it to Switzerland, driving non stop 188 Km,
 and up to 1200 m height NN (3.937 feet NAP).
But in front of the Hotel I had to drive backwards....and then this happened.(
I am still investigating what really happened. Both steering knuckles bent completely.
First the right and than, because of 600m depth in front of me I had to drive backwards again, and killed the left side.
I tormented her into the garage and hope to fix it before the next job...?!

Donnerstag, 16. Mai 2013

Seating In Carbon Brushes Day 13

The End
46.400.000 revolutions and 312 hours runtime
But this seating was a major exception.
By accident I got the only set of H60 brushes on earth that was not angled right.
Mazel tov
Next H60 seating is running in a WarP11 and looks much much better from the beginning.

Sonntag, 12. Mai 2013

Brush Seating Service

WarP 9™ And WarP 11™ Motors In Stock

WarP 9 Series DC Motor

Double ended shaft - advanced timing, 1.125" DE Keyed Shaft* CE Keyed Shaft*, lift-eye bolt hole, thermal switch inkl. a Keyway and a Lift Eye Hook and National T300 or the Hellwig H49 RedTop split brushes. On request with brush seating service.

WarP 11 Series DC Motor

Double ended shaft - advanced timing, 1.125" DE Keyed Shaft* CE Keyed Shaft*, lift-eye bolt hole, thermal switch inkl. a Keyway and a Lift Eye Hook and the Hellwig H60 RedTop split brushes. On request with brush seating service.

As an authorized international Netgain dealer this WarP's are for sale.
Inquiries at:

Seating In Carbon Brushes Day 9

32 mega revolutions / 222h
Spring force is at about 24 Nm.

Donnerstag, 9. Mai 2013

Seating In Carbon Brushes Day 7

This is the result after 24.400.000 revolutions or seven days runtime.

Helwig Carbon H60 brushes in a WarP 9