7/7 Steering Tutorial - Page 3

dnuts · #31 02-17-2004, 12:52 AM

Hey Cyborgzero, can I have more details about your 2.2 steering motor swap? Is it just a standard yellow can motor like the ones in KitRacers, or is it a ZZ motor? Also, do you still run the stock SE battery, or have you with your superior intellect discovered something better?

dnuts · #32 02-17-2004, 12:58 AM

Hey Cyborg sorry to bother you again. But, I am currently working on a Cannonball pcb. I have completed Cartmans mosfet mod and am now looking for more power. Whats you opinion on the Laymans tricell? It seems like a good voltage shot but not enough amperage to maintain that flow. I just ordered more fets from digikey, would double stacking this pcb provide increased perfromance, and if so what power source would you recommend that I try? Tell CharlieBrown that you need to kick the football before swapping fets.

97PrizmLsi · #33 02-17-2004, 09:16 AM

I did the steering modification a while ago and it works great. The only thing is that the car seems to slow down when making a left, but otherwise it is much better and doesn't chatter. I have done it on two cars and both get a little bogged down when I make a left.

charliebrown · #34 02-17-2004, 11:52 AM

Quote:

Originally posted by dnuts
Hey Cyborg sorry to bother you again. But, I am currently working on a Cannonball pcb. I have completed Cartmans mosfet mod and am now looking for more power. Whats you opinion on the Laymans tricell? It seems like a good voltage shot but not enough amperage to maintain that flow. I just ordered more fets from digikey, would double stacking this pcb provide increased perfromance, and if so what power source would you recommend that I try? Tell CharlieBrown that you need to kick the football before swapping fets.

Ok, ok that's enough now. I meant it when I apologized, I know he is not full of BS. Why don't you stop mocking me already? cyborgzero and I are cool now, I don't think he wants you to jump at me and make a fool of yourself.

At least I use the edit button instead of bumping my post 2 times in a row.

And cyborgzero, I think I'll just send you the car, and maybe you can do the fet mod for me.....I'll enclose 5 bucks for you. Email me, we'll haggle.

(Hey, I'm stealing your smiley.

)
Chuckster...

clxfiles · #35 02-17-2004, 12:57 PM

DO NOT try the bypass in a non-fet modded SE. The transistor that is removed governs the turning on of the fwd cirquit through current. Since a fet is only voltage controlled and not current dependant it is different. REmoving the resistor or jumping the trannies WILL fry the trannies.....

charliebrown · #36 02-17-2004, 01:01 PM

Quote:

Originally posted by clxfiles
DO NOT try the bypass in a non-fet modded SE. The transistor that is removed governs the turning on of the fwd cirquit through current. Since a fet is only voltage controlled and not current dependant it is different. REmoving the resistor or jumping the trannies WILL fry the trannies.....

Thanks for sharing that with us just now....after I fried the trannies.

lol j/k! I'm sending my car to cyborgzero anyways.

Oh, and if you're reading this, Bad Company....

MAKE THiS A STICKY!!!!!

Chuckster...

clxfiles · #37 02-17-2004, 01:26 PM

Trust me, I didn't know about that until AFTER yours fried. I read your post and asked a friend to take a look and tell me what he thought. Then I just regurgitated his response to me. I would have gave him credit but I think he likes to lay low on these type of things and stays away from forums.

But thanks for finding out for the rest of us.... j/k

charliebrown · #38 02-17-2004, 07:41 PM

Quote:

Originally posted by clxfiles
Trust me, I didn't know about that until AFTER yours fried. I read your post and asked a friend to take a look and tell me what he thought. Then I just regurgitated his response to me. I would have gave him credit but I think he likes to lay low on these type of things and stays away from forums.

But thanks for finding out for the rest of us.... j/k

heh heh....*curses under breath*

Anyways, I'm copying this from a post I made on BitPimps, I have to thank ph2t for the pics and cyborgzero for the theory.

"Whoopee! Finally, I have something to contribute to this forum.

Before I start off, let me thank cyborgzero for figuring out this method, it wasn't my idea, I'm just taking his tutie and making a guide for it.

Now, as ph2t showed us in this page: http://bitpimps.lixlink.com/pages/ph...r=asc&start=45

These are the FETs to use alright, but let me point out one thing.

This picture shows the resistor that needs to be removed completely, and
put nothing there in it's place. The red circle shows the spot where one end of a seperate wire will be soldered. (Make sure the end of the wire is stripped, and the other end of the wire is stripped also, the rest will be insulated, thank you.)

Now, this next pic shows where the other end of the wire will be soldered to.

Make sure of one thing: This MUST BE DONE with the exact FETs that ph2t used. If you do it with the transistors, you will fry them and your car will be a frickin turtle, not the rocket you want it to be.

Remember, this was cyborgzero's idea. This basically increases the turn-on of the FETs. You also may want to charge the battery as close as you can to it's peak capacity."

Well, there you go.

Chuckster...

cyborgzero · #39 02-17-2004, 08:16 PM

Yep, thats EXACTLY the right idea there.

Glad to see some others are doing well with it..

And, ya, I was a bit concerned about the fets, since one of the main reasons you use them in the first place is to decrease input current ie high impedance input.

Rob

charliebrown · #40 02-17-2004, 08:26 PM

Quote:

Originally posted by cyborgzero
Yep, thats EXACTLY the right idea there.

Glad to see some others are doing well with it..

And, ya, I was a bit concerned about the fets, since one of the main reasons you use them in the first place is to decrease input current ie high impedance input.

Rob

heh heh......anyways, when you jumper a wire from one position to the other, it is basically fully turning on the FETs by sending the power from the voltage regulator straight to the FETs, correct?

P.S. cyborgzero, email me....I'm interested in those free FETs.

Chuckster...

dnuts · #41 02-18-2004, 01:40 AM

Hey CharlieBrown whats up? Let there be peace in the forums, by the way I botched my first SE also. But I am persistant, just ordered some more fets from digikey. I just went to TRU today to pick up some Kit Racers and Lego wheels, but also came home with a new red S2000 microsizer pro. I really like my SE, but for some reason I find that little S2000 more appealing. Anyways, what I mean to say is sorry for jumping in between business that does not concern me, take it easy.

charliebrown · #42 02-20-2004, 01:07 AM

Quote:

Originally posted by cyborgzero
well, you can just do one of each, it shouldn't make much difference, but, if you want to doublestack the way I did, its your choice...

I would try one of each, and, if its fast enough for you, stay with that.

Rob

cyborgzero and I were talking in AIM chat, and we came up with this.

You could stack the FETs if you wanted to, but it wouldn't help THAT much......maybe 5-10 percent at most. But, you need more voltage and power to turn these FETs on more, right? So, stack as many FETs as you want, then turn them on more with 1-3 more battery cells, you could run 6 volts through the thing, and with stacked FETs, the thing will fly! But, the SE will be tremendously obese, so be prepared for some serious dolphin action.

Chuckster...

dnuts · #43 02-20-2004, 01:57 AM

Did Cyborgzero discover something new about the se PCB? According to the research I have done the se PCB power supply is regulated. Basically, what I have read is that you could run two se cells in series making 4.8v and the regulator would drop it down to 2v.

clxfiles · #44 02-20-2004, 02:16 AM

Supposedly after a MOSFET mod the voltage regulator is no more. Now I don't know if that's any MOSFET mod or if it's just the MicroAmps mod. I have an SE modded by MicroAmps which I threw a lipoly in and it was flying. 3.6 volts!!! It was noticebly faster than just the regular 2.4 volt battery pack in the SE. It was just hanging by wires out the body so I took it off til I can figure a better way to mount but nothing fried (like someone posted before).....knock on wood.... bdebde reports that he actually has 2x SE battery packs so that's basically a quad cell 4.8 volts going to the motor. He hasn't posted anything lately but I been dying to see it.
Just a warning guys, I don't know if I would put more than 5 volts through the PCB. Maybe the FETs won't fry but something else in the board just might.

dnuts · #45 02-20-2004, 02:52 AM

Hey clxfiles, very interesting info. I have not received my fets from didikey yet, so I have not had a chance to play with batteries. How is your run time with the stock battery? Does your microamps pcb have the fet bypass wire also? I was at my local Target the other day and saw a charger that looked promising. I believe it was a Tyco product. It was labeled as a NMHD battery charger. It was a small wallplug charger that came with a battery apparantly as an upgrade for one of their own products. Although the battery is useless, the charger would probably work great if it were a true peak charger.