Mr BigShot's Must See Upgrade's

[Cyslyde]

Originally posted by Mr BigShot
Here's a pic of my Big Block in my car still not done yet having a problem with when I turn my car on the servo turm s to one side and dosent work . I have to look at it later tho wife wont let me right now

did you ever fix this? I am having the same problem, but haven't had time to tear that car apart... if i know what i'm looking for will help out alot
thanx
-=Cy

[Mr BigShot]

It was a loose wire on the servo I just resoldiered it .


Cian - Yes i belive it is " my big Block " I'am also installing The 45t in a car right now"for someone " its a little smaller.

Hey 3 series takumi - What you mean about gears I'am using a 11 tooth with my BB and a 8 tooth with my buddy 45t ANY susgestions you have will be "great" I haven't been messing with RC for that long only since the Xmods came out

Today I went to the local Kar Tunes <--- car audio installation shop to get some more wire and they give me a great way to make your power cables look SWEET !! You just take one black wire and one red wireand put one end into a vice "tight" Then you take the other two ends and put them together in a drill . Hold it tight and spin it and walk towards the end in a vice It braids it up real nice

[Cyslyde]

man i havn't seen anybody twist wires like that for awile hehe your right that does work great tho. and thanx about that wire, which one was it specifically if you remember?

[Mr BigShot]

This is the diagram that I used . I got it from a guy named Chino over at xmodrc 's forum . He is a proud member of "DSR" Drunkin Style Racein. To make it eazy what this does is let you run around 5 volts to your circuit board and any where from 10 to 12 volts to your motor Oh yea and if you want to go with more Volts you can add more batt's , but I useing 8 AAA's right now and you don't want to really go any heavier.Oh yea almost forgot I have the thing all wired up and this thing flies now I just haved to get 8 cell's under a RSX body Here's some pics

[Mr BigShot]

5.30

[Mr BigShot]

10.71 also I'am using 8 IC3's just so you know you can use 8 1.5 's also to get 12 volts it wont harm the board at all

[neurokinetik]

Relays are another idea I had that I hadn't gotten around to trying yet...

[Mr BigShot]

I have so many ideas and 6 cars to mess with just don't have the time . I going to get two more relays tomarrow and relay up my Big Block cant wait to see how fast it is

[Cyslyde]

I was going to try that diragram, however, there is a guy on that board named jshwaa and he has another version of that. it's smaller and looks much simpler

[xxspeednplayaxx]

OMG MR.BIGSHOT! alright so you got the 5V relays at radio shack, just a few questions
- how do you wire them up, (please make it simple to understand, im no electronics wiz lol)
- how many relays do you need
- how do the relays work
- how many volts can be put on before the relays give out, or more that 5V is put through the pcb

over at xmodworld.com this guy did the samething using 4X 540mah lipoly cells with a total output of 14.4V!!! except he wouldnt say how, please you gotta tell me were you got those realys from, and what kind they are (if you wanna keep it quiet xxspeednplayaxx@hotmail.com is my email) o please man this so totaly rocks!

those miniz's wont know what hit em

[hoopsta1423]

ya somebody definately needs to post how exactly to wire this diagram up, i saw it and wanted to do it, but i cannot read schematics, i am as we speak looking on google for a guide to reading schematics

[10_second_supra]

hey mister big shot could you show me a pic of how the upgrade wires are atached to the baoard and tell me how you didi it. I would also apreciate a pic.

[newbitowner]

Can you sell me one of those little pieces all the way in the right?

I think RS is back ordering them. I can't wait 3 weeks!

[Mr BigShot]

This should help everone with any ?'s on how to do this upgrade . Some tools are required to do this upgrade like a soldiering gun This zip file will only work if you have print artist 8.0 . I don't know how to convert it to make it show up on the screen like the pics.

[scatmanjohn01]

it doesnt work (your download)

[hoopsta1423]

edit, didnt read your entire post?, what is print artist 8? where can i get it?

[newbitowner]

MBS, can you sell me 2 of those metal left joint cups?

[scatmanjohn01]

Hey Bigshot, did you make the axles out of those allen head bolts?

if so what size and what do i need etc.

[xxspeednplayaxx]

hey mr.bigshot, try saving it as a pdf.. when you save, select pdf as a file type

[Mr BigShot]

Here a pic of my diagram . I printed it out hope the words on it will show up . I found that if you leave the batteries in the car with it turned off over night . The power will be drained out in the morning so take your batteries out after your done useing it .

[TypeZer0]

rather than using relays (defeats the purpose of propo control) try neuro's external FET mod.

[Mr BigShot]

whats propo control ?

[xxspeednplayaxx]

im pretty sure propo is what allows you to go fast or slow and anywhere in between, (the trigger on your controller) hey mr big shot, thnx fer the pic, dose the car still function completely normally? or can you only for full power fowards or no movement (thats non prope) also how big are the relays? you dont need to put a pic, just put it in comparison to something on the xmods chassis... thnx

[scatmanjohn01]

Originally posted by TypeZer0
rather than using relays (defeats the purpose of propo control) try neuro's external FET mod.

typezero, the reason hes using relays is to run more cells AND hotter motors. If he did nero's external fet upgrade, would he only be able to run hotter motors, but only 6 cells? im prety sure..

[xxspeednplayaxx]

lol scatmanjohn01 do you now see why im confused, im being told two diffrent thing, and both ways some1 says it dosen't work... im just gunna ask the shak

[Rez]

Well, it's been a while, and this thing might work differently, but...

We built an electric car in high school. It used a speed controler (about the size of a large shoe box) that would pulsate DC current by using a relay. It didn't regulate the voltage, it just adjusted how often the circuit was on and off (more time on = more throttle). If the xmod works the same way, then the proportional throttle will translate straight through the relays. If it doesn't, then it won't. Anybody know? Am I wrong?

[neurokinetik]

Originally posted by Rez
Well, it's been a while, and this thing might work differently, but...

We built an electric car in high school. It used a speed controler (about the size of a large shoe box) that would pulsate DC current by using a relay. It didn't regulate the voltage, it just adjusted how often the circuit was on and off (more time on = more throttle). If the xmod works the same way, then the proportional throttle will translate straight through the relays. If it doesn't, then it won't. Anybody know? Am I wrong?

You are correct, sir. However, the speed at which the switching occurs might be too much for the relays to handle. It's about 300 times per second.

[Rez]

Welp, only one way to find out! lol

[Cian]

I thought relays only worked in non proprtional cars like Race Tins? If you use a relays with the big motors, you may get the mad power, but it'll still just switch on once the input voltage crosses a certain threshold, am I way off??

[Rez]

The way it works is that the relay switches on and off really really fast. If it spends more time off than on, the car goes slow. If it spends more time on than off, it goes faster. This is how the proportional throttle works, it adjusts how long the switch is on and how long the switch is off, right up till it's always on at full throttle.

As Neurokenetic said, provided the relays can keep up, you'll keep your proportional throttle, even with the mod.

So what's the word, Bigshot? Can the relays handle the frequency?

To better answer your question, the relay switches one circuit on when current is applied to another. That means the 5v from the electronics can be used to close 14v to the motor, thus the sensitive electronics can control a dangerous level of voltage. The proportional speed of your car isn't controled by variable voltage, but by variable frequency. If Bigshot's relays can operate at a high enough frequency, this mod should be entirely transparent to the driver.

[Cian]

Ahh, now I Geddit, thanks Rez for clearing that one up.

So Mr B, i guess the $64,000 Question is: Does it work?

[Mr BigShot]

This set up works , but I think it is running at FULL THROTTLE ! I un hooked all my stuff so I can rewire it with better wire and THIS !!!!!!!!!!!!!!!!!!!!!!!!!! " pic "

I think its time to make a drag car motor was $15.99 and the 20 tooth pinion was $3.50

[scatmanjohn01]

what gear are you gunna use to go with 20 tooth?

[Rez]

Bigshot, when you say you think it was at full throttle, do you mean you lost the proportional steering?

[Mr BigShot]

I have steering , even tho the car has so much power it's more like drifting every where What I was talking about was when I press the triger to go go foward it doesn't take off slowly it takes off fast.The steering works fine .

[xxspeednplayaxx]

dude my jaw just smacked the floor, lol that is the sickest thing ive ever seen!! my only doubt would be that the plastic gears will melt when attached to that monster.... thats gotta be a 540 size.. lol if i were you , buy a motor for the hpi racers (non gas) if those go 40mph+ a xmod should easily do 50 lol

i found this site and i must say wow! some of these motors are hardcore
http://www.financialsearchgroupinc.c...4061,1,ur.html
im going to my lhs with about 30bux for a motor, whats should i get (stock fets and volts arent my concern any more) what motor would the best to pop in a xmod to take advantage of a new set of powerful fets (neuro's mod) from this site i like the team orion core, tamiya dyna run and the trinity magic johnson... btw i also will be modding and screwing with my b.b.j.m (the one that was in the pix)

[Rez]

Originally posted by Mr BigShot
I have steering , even tho the car has so much power it's more like drifting every where What I was talking about was when I press the triger to go go foward it doesn't take off slowly it takes off fast.The steering works fine .

*smacks head* I ment to ask if you still had proportional throttle, not steering.

[Exaran]

This relay stuff made me have an idea for a nitrous mod...

Could you somehow rig a relay so it would require a full throttle signal from the electronics to flip on? Then you could hook your extra cells to the relay so they would only work if you were at full throttle.

In other words, you'd have full propo 4 cell power untill you floored it, then the extra cells would kick in.

This would kinda be like a "real" car nitrous setup. It's common to put your nitrous on a microswitch behind the gas pedal so it only kicks in when you and the engine are ready (already flooring it)

does anybody know for sure how the speed controler controls the motor? Is the voltage constant, with the signal just pulsing as mentioned above?

...i may start another thread

[aperson]

can i ask why you're still using stock electronics?

[spitty12]

The switch for nitrous oxide that goes behind the pedal does not automatically give you a shot of No2, when your are going WOT(wide open throttle) then you can hit the "N0S!1!" but not when it is onlt partial throttle.

Why would you want power that only comes on at high rpm's? It would disturb traction and power wouldn't be linear, it would be gay. Just wire in extra cells and pull harder when you want it to go faster

EDIT: Sorry about thread jacking, some systems do not use the tps sensor but a switch mounted on the actual throttle plate where the cable actuated spool thing will engage the switch, this is the way it is on my friends chevy. But you can mount a switch anywhere you want to. Or if you want to get technical you can get a computer controlled system that will analyze you maf, tps, egt and adjust advance.