Mofset upgrade

MaxximumRC · Post by **MaxximumRC** » Thu May 22, 2003 7:00 pm

What is it, how does it help, and isn't that the same thing they use in ESC's

micro_Amps · Post by **micro_Amps** » Thu May 22, 2003 7:07 pm

Max, MOSFETs are high current, low resistance transistors, and yes they are used in ESCs.
Here is a MOSFET mod done in a BitChar-g.
http://www.ausmicro.com/topic.asp?TOPIC ... +Technical

uA

MaxximumRC · Post by **MaxximumRC** » Thu May 22, 2003 8:08 pm

thank you answering my question, i am asking questions like this because I am used to bigger R/C's

karl-2k3 · Post by **karl-2k3** » Sat May 24, 2003 3:25 pm

Same here , im used to either 1/10 + 1/18 electric or nitro

So im a n00by to all this stuff

Post by **CaboWabo** » Sat May 24, 2003 4:35 pm

don't worry guys, we all started out pretty much the same.
There's still a shiatload I don't know so I'm always asking questions... s'all good.

Bit-Man · Post by **Bit-Man** » Sun May 25, 2003 8:34 am

Yo what´s goin`on?

i´m a German bit racer and i just tell ya:

I´ve got a mosfet mod in my bit (thanks to microsash from www.bit-racer.de) and it`s horrible to drive.

but mosfets are must !

just try it

Post by **CaboWabo** » Sun May 25, 2003 11:24 am

welcome Bit-Man!
Is there any more information about this upgrade at bit-racer.de?

bdebde · Post by **bdebde** » Sun May 25, 2003 1:07 pm

I found some good info here

Single cell

http://www.universalhost.de/html_bit/mo ... bridge.htm

Dual cell

http://www.universalhost.de/html_bit/mo ... dge2_4.htm

A translator may help.

Post by **CaboWabo** » Sun May 25, 2003 1:25 pm

excellent find bdebde, thanks

payaso · Post by **payaso** » Sun May 25, 2003 1:28 pm

Welcome to the boards Bit-Man.. The MOSFETS mods seem to be really popular in Duetchland.. Us amis need more info..

silla

bdebde · Post by **bdebde** » Sun May 25, 2003 1:59 pm

Oh, and here is a source to find the mosfets in the US:

http://www.newark.com/

I picked up a dozen of each for the 2 cell mosfet mod. I just haven't tried it yet, gotta find smaller tip for soldering iron!

ph2t · Post by **ph2t** » Sun May 25, 2003 3:35 pm

Micro popped in the other day and picked up one of my cars. He's currently moddin it for me and I'll get it back soon. When I do I will give you pimps the low down.... In the meantime for the BEST english version of this mod check out the link Micro posted earlier in this thread.

ph2t.

bdebde · Post by **bdebde** » Mon Jun 02, 2003 10:52 pm

I did the mosfet mod for 2 and 3 cells. All I can say is WOW!!! This mod gives so much more power to wheels. Traction can become a serious problem with this mod. I tried the pcb I modified in a 3 cell car that is basicly two rear halves glued together, 4 wheel driven, no steering. I used kit racer blue gears and zip zap red motors. This thing lights up the tires. I even broke my old speed record of 11.6 mph, I hit 13.06 mph! I am gonna drop this pcb in a 2 cell car, to try and tone it down a bit. With no suspension, any little inperfection in the painted concrete floor at work, gets this thing completely airborne! You gotta try this mod. I will be sending one to micro_Amps in austaulia for the single cell mod. I attempted the single cell mod, but it was a little more difficult. Try it, you'll like it!!!

ezenterprises · Post by **ezenterprises** » Mon Jun 02, 2003 11:21 pm

From what micro_amps was tellin me there is one mosfet mod that will handle any amount of cells wether it be 1 or more...

bdebde · Post by **bdebde** » Tue Jun 03, 2003 12:02 am

The mod I did was a transistor for fet swap in same location. Due to voltage requirements you have to use 2 cell minimum. I think maybe the other mod with the fets on the other side of the board will do all, I know it will work for 1 cell, not sure on others.