06-09-2003, 04:16 PM
|
|
TinyRC Pro
|
|
Join Date: Apr 2003
Location: NJ USA
Posts: 57
|
|
ARE YOU INSULTING MY SOLDERING SKILLS YOU YOU YOU NONSOLDERING PERSON!!!!!!!!!!!!!
AHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH
lol i can solder great man 
plus im not wasteing 20 bux on this lol
so does anyone know how to hardwire this part?
__________________
trc
My microsizer:
   
:  
Duel cell two 80 NICd
i have 40ft range without a telescopic
|
06-09-2003, 04:26 PM
|
 |
Registered User
|
|
Join Date: Feb 2003
Location: Melbourne, Australia
Posts: 90
|
|
hehehe, I'm sure no offence was intended Rcmaniac.
The hardwiring instructions are in one of the links earlier in this thread.
Goodluck, let us know how you go.
uA
|
06-09-2003, 04:47 PM
|
|
TinyRC Pro
|
|
Join Date: Apr 2003
Location: NJ USA
Posts: 57
|
|
|
yes no offense lol hahaha
__________________
trc
My microsizer:
:
Duel cell two 80 NICd
i have 40ft range without a telescopic
|
06-09-2003, 04:57 PM
|
|
TinyRC Pro
|
|
Join Date: Apr 2003
Location: NJ USA
Posts: 57
|
|
i cant find hardwireing on that website  can you find it and give me a link ?thanks
my dream is
  
no body(just wings lol)4 cells and phast motor Droollllllllll
is it possible?
__________________
trc
My microsizer:
:
Duel cell two 80 NICd
i have 40ft range without a telescopic
|
06-09-2003, 06:10 PM
|
|
Registered User
|
|
Join Date: Feb 2003
Location: Melbourne, Australia
Posts: 90
|
|
Yeh sure, here is the link to the german site that published the mod, its a bit tricky to understand but all the info is here
uA
|
06-09-2003, 06:25 PM
|
 |
Chief Propeller Head
|
|
Join Date: Jan 2003
Location: Melbourne, Australia
Posts: 269
|
|
RC, I'm the muth#$%^ solder king! hehe, lol!
That's cool dude if you can solder no sweats....But trust me, be very careful, those SMD FETs are awfully tricky......
ph2t.
|
06-09-2003, 09:04 PM
|
 |
That's all folks
|
|
Join Date: Nov 2002
Location: Washington (in a van down by the river)
Posts: 419
|
|
Quote:
Originally posted by ph2t
RC, I'm the muth#$%^ solder king! hehe, lol!
That's cool dude if you can solder no sweats....But trust me, be very careful, those SMD FETs are awfully tricky......
ph2t.
|
I second that!
__________________
That's all folks!
|
06-10-2003, 05:03 PM
|
|
TinyRC Pro
|
|
Join Date: Apr 2003
Location: NJ USA
Posts: 57
|
|
Quote:
Originally posted by micro_Amps
Yeh sure, here is the link to the german site that published the mod, its a bit tricky to understand but all the info is here
uA
|
i said hardwiring not replacing with other mosfets lol
never mind
__________________
trc
My microsizer:
:
Duel cell two 80 NICd
i have 40ft range without a telescopic
|
06-10-2003, 08:58 PM
|
|
That's all folks
|
|
Join Date: Nov 2002
Location: Washington (in a van down by the river)
Posts: 419
|
|
Quote:
Originally posted by Rcmaniac246
i said hardwiring not replacing with other mosfets lol
never mind
|
Dude, you can't "hardwire" the transistors. If you remove them or jumper across them, your circuit board will not work. Maybe you are thinking of the resistor jumpering mod that "some" people have had success with. The mosfet mod removes the high resistance transistors, and replaces them with low resistance mosfet transistors.
__________________
That's all folks!
|
06-10-2003, 09:25 PM
|
 |
Registered User
|
|
Join Date: Jan 2003
Location: baltimore,md
Posts: 1,061
|
|
|
well if you completely bypass them they would go even faster wouldnt they?
|
06-10-2003, 10:11 PM
|
|
That's all folks
|
|
Join Date: Nov 2002
Location: Washington (in a van down by the river)
Posts: 419
|
|
Quote:
Originally posted by BabyKiller
well if you completely bypass them they would go even faster wouldnt they?
|
If you completely bypass them, you would be hooking the battery straight to the motor. You could only get one direction, and it would start running as soon as you start charging. You would have no control over throttle, it would always be running.
__________________
That's all folks!
|
06-10-2003, 11:01 PM
|
|
Chief Propeller Head
|
|
Join Date: Jan 2003
Location: Melbourne, Australia
Posts: 269
|
|
BK, you need the mosfets to be able to control the motor. As bde said, bypassing them completely is the same as just hooking a motor straight to a battery, might as well through the chassis away....
The circuit that controls the direction of the motor is called a H-Bridge. It was given this name 'cause of its looks, see below.
The bottom two transistors, labeled Q4 & Q5 connect to Fwd and Rev signals on the receiver chip (which is not part of this picture).
Depending on which of these two transistors is activated, they change the direction of the current traveling through the motor.
If Fwd is on the motor turns one way. If Rev is on the current flows in the opposite direction, causing the motor to spin the other way.
This is what gives you forward and reverse!
The problem with this setup is two things:
1) The voltage is small, 1.2V.
2) The transistors drop the voltage further.
In the end (as stated in many threads here) the actual voltage that goes to the motor is nowhere near 1.2V.
Replacing the transistors Q4 -> Q7 with mosfets provides more voltage to the motor because these mosfets have very little resistance. They (the fets) also increase the current going to the motor which gives you that insane torque boost, as seen in my video posted in this thread earlier.
Using ohms law V=I/R. In this case the R hasn't changed, that's the motor. V has changed, it has increased. Re-arranging ohms law to I=V/R shows that V is getting bigger and R isn't. Given that reasoning I (current) has to increase!
Hope this helps....
ph2t.
|
06-12-2003, 09:29 PM
|
|
That's all folks
|
|
Join Date: Nov 2002
Location: Washington (in a van down by the river)
Posts: 419
|
|
|
I got my new Perfection 4.2 motors the other day. They are FAST! Now I can't wait to get my mosfet modded pcb back from micro_Amps! These motors should be incredible with the mosfet mod!
__________________
That's all folks!
|
06-13-2003, 04:51 AM
|
|
Registered User
|
|
Join Date: Feb 2003
Location: Melbourne, Australia
Posts: 90
|
|
They sure are fast. I got my 4.2s in the mail this afternoon and have been screaming around the house for the last hour with a single cell fet booster and a dual cell fet booster. THEY FLY !!!
Heaps faster than a perfection 3.8
uA
|
06-13-2003, 09:22 PM
|
|
That's all folks
|
|
Join Date: Nov 2002
Location: Washington (in a van down by the river)
Posts: 419
|
|
|
Boy, I sure wish I had a fet booster to try mine in!
micro_Amps did my booster car show up there yet?
__________________
That's all folks!
Last edited by bdebde; 06-13-2003 at 09:24 PM.
|
Posting Rules
|
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
HTML code is Off
|
|
|
All times are GMT -5. The time now is 04:07 AM.
|
|
+ 
Linear Mode
