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What’s new?
12.02.2009
There was some kind of standstill during the winter season.
To begin with, I’ve ordered 2 very interesting books from Amazon.com
I’ve posted some up-to-date pictures to stimulate you!
This is a Curtis 1221-7405 400 А controller on 120V… or at least it was All the Mosfet (BUZ 30A) transistors have burnt. I found it in Stamboliiski town in some junkyard. It’s quite impossible to fix it, but also it’s too small for my purposes. Apparently here we have an overloading process that lead to the current state of the transistors. If even one transistor should burn out, all others will follow the example. It’s interesting to know who it’s made. They used lots of electrical condensers in order to increase the area through which the electricity will flow, and that’s a foxy trick. There’s no problem with putting only one capacitor, but its pinouts won’t let enough electricity pass. The pinouts of the capacitor are put directly on the power armature and this blocks all the inductance. You can see a scheme of the controller here:
http://www.evdl.org/docs/curtis_1221b_schematic.pdf
ELPROM-EMS have released a new series of motors and I think I’ll get myself one of these very soon
Expect more news soon
The presentation of Tesla Roadster in Top Gear
16.12.2008
The presentation of Tesla Roadster in Top Gear
Something I read
13.10.2008
These days I read some books and I found out some interesting things.
Max HP = reted Hp x 4
Max torque = torque at rated PRM x 9
Max Current = full load amperage x 5
These formulas concern the engine.
MAx HP = reted Hp x 4 – the maximum power of one electric engine is equal to its nominal power multiplied by 4.
In another book I read something interesting about the tires. The pattern of the tire has a great importance. For example of a suitable tire the book suggests GoodYear Invicta GL.
http://www.goodyear.ca/catalog/products/INVGL.html
As you may notice, the tire has radial pattern and it has a very little space of contact. By choosing the right model of tires, you can increase incredibly the past distance with only one filling of the tank.
Tesla roadster
09.10.2008
Tesla roadster – for me this is the EV that will make its way into history. It’s like Tesla shouted to the world: “Look! Open your eyes!”. The batteries and the engine of Tesla produce 250 h.p. and a torgue of 380 Hm, further more the maximum torgue is available since 0 RPM. With just one charge of the accumulators you can travel for 350 km. Tesla starts and accelerates extremely quietly. And so, unconsciously, it reaches 14 000 RPM. The acceleration of 100 h.p. takes 3.9 sec, and the time of acceleration continues until the maximum speed of more than 200 km/h is reached. The whole idea of this car is to show the many advantages of this technology in regard to the already old conception of vehicles with internal combustion engine. It’s fast, powerful, economic and ecological! It’s something that none of the manufacturers can assemble in just one ordinary automobile. Here you can see some tables:
