Turbo Prototype

Steve · #1 10-24-2002, 12:09 AM

Eeegaads! What is it you say? Well, it's a turbo! Ok, so the first try was a little rough around the edges, and little big, but beta 2 is much improved.

Steve · #2 10-24-2002, 12:15 AM

Ok, so here's the deal. It's a basic timer circuit that waits a certain amount of time then closes. Sooooo, pressing forward on the controller gives you 1.5 volts to your motor, and after the timer expired it dumps another 1.5 volts until you let off the throttle, then it resets.

The thought is that with a two cell mod, tight corners and precision driving is next to impossible, but with this thing, I'll be able to navigate the S turns and then have the boost kick in for the long straights.

The thing sticking out is the adjustable timer...you can set it to no delay, through something like 10 seconds.

I still have major work to do but I'm pretty excited. I'll keep you all posted, I have a feeling I'll need a little help from you guys that have taken an electronics class or two.

Steve · #3 10-24-2002, 12:16 AM

another angle

d00kie · #4 10-24-2002, 12:32 AM

HOLYword filtered!!!

Keep us up to date on your project.

Good Luck too!

Steve · #5 10-24-2002, 12:47 AM

on a little side note....does anyone know how to make voltage bleed off slowly....so letting off the throttle isn't instant? I'd like to have the ability to slow down slowly after letting off the throttle, or the option of hitting reverse which would esentially be a hard brake.

I was thinking a capacitor of some sort, but something tells me it won't be that simple.

Ideas welcome.

Gruder · #6 10-24-2002, 01:21 AM

An RC cir. Resistor and a cap. The equation to determine how fast you want the cap to charg and discharge is determined by the following eq.

Vc(t) = V(@infintiy) = [V(@time timer is turned on or off) - V(@infinity)]e -t/T

V = Voltage
e = natural log
-t/T = exponet of natural log
-t = time it takes cap to charge or discharge
T = R/C
R = Resistor value
C = Cap value

Hope this is not to confusing.

Gruder

PT Bruiser · #7 10-24-2002, 01:44 AM

This is the coolest mod idea!! Darn that would be sweet - an "afterburner" type thing. That would be a good thing to have. I put in a 3 volt duracel battery just for kicks, and it was darn fast, but I too wondered how the heck one would control that kind of speed. I did nothing but doughnuts on my kitchen floor with 3 volts! Your mod im sure would take some time to get used to a new way of driving, but darn worth it! DO keep us informed!! I gots lots of space in the Cruiser body for extra stuff!! (why everyone is such a PT hater is beyond me!!!) I greatly thinned out the body shell, and its quick now!

MTL · #8 10-24-2002, 03:31 AM

whoa....lucklily ZZs are large...
heh id cut the sunroof off the body to make it fit...

hmmm about that driving..im guessing youll have to do alot of tapping....and dont gas it on the turns but use the momentum of the speed to make it around bends

Steve · #9 10-24-2002, 07:30 AM

Quote:

Originally posted by Gruder
An RC cir. Resistor and a cap. The equation to determine how fast you want the cap to charg and discharge is determined by the following eq.

Vc(t) = V(@infintiy) = [V(@time timer is turned on or off) - V(@infinity)]e -t/T

V = Voltage
e = natural log
-t/T = exponet of natural log
-t = time it takes cap to charge or discharge
T = R/C
R = Resistor value
C = Cap value

Hope this is not to confusing.

Gruder

LOL...ummm......2.2 JIGGAWATS!!!! Thanks Gruder. You wouldn't by chance wanna build it and then send the schematics? I'd give you some of the credit..."the Steve-Gruder Variable Turbo Module With Decay ...for only $9.95, and if you act now, you'll also get the Miracle Steak Knife that cuts lexan with ease."

Steve · #10 10-24-2002, 07:34 AM

Quote:

Originally posted by MTL
whoa....lucklily ZZs are large...
heh id cut the sunroof off the body to make it fit..

Hehe, I'm thinking I can make it quite a bit smaller...worst case scenario, I'll add some chrome, build to resemble an overgrown Hemi, and just punch it through the hood!

BLAKE · #11 10-24-2002, 10:02 AM

Wow man! That is too cool

Engineering is waaay beyond me, but I'm glad it works for someone.

Mattydiah · #12 10-24-2002, 06:19 PM

*Sigh* Its times like this I wish I paid more attention in my HS electronics class.

Cyslyde · #13 10-24-2002, 08:46 PM

SWEET! defenitly let us know on how everything is going, I would also like to see a digram if your not intending to sell this turbo kit that is

Steve · #14 10-24-2002, 10:42 PM

yes Virginia, those are goose bumps! It's starting to come together and it looks like it might just work. I re-built it tonight and crammed it all into an even smaller package. I tried to keep it long and narrow so I can put a cowling around it. I'm told there are smaller resistors that one can buy, but I haven't a clue where. If someone knows post it.

Nope, no plans to sell it, this is just for fun. The schematic I used is online at this place (no affiliation). It's a basic 555 timer circuit. I used a 100k variable resistor instead of their 1M (less delay), and connected a motor instead of their beeper. I left out the LED's and toggle switch, and I plan to run it on 3v instead of 9. For size purposes, I got rid of the board and just started soldering things as close together as possible.

Steve · #15 10-24-2002, 10:43 PM

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