Possible way to make the car go a LOT faster....by REMOVING a feature! - Page 3

Loganberry · #31 02-29-2004, 11:42 AM

they were se's. they mounted the batteries on the outside of the car. they had the batteries back almost on top of the motor. this site: *************.com has alot of info about this hook up. i ll try this when i get some more money for the batteries and the charger. good luck. later

Loganberry · #32 02-29-2004, 11:45 AM

dont know why that link didnt work. mircorccenter.com is what is was supposed to say. sorry about that.

clxfiles · #33 02-29-2004, 02:29 PM

Loganberry - Thanks for the info. I have been to that forum and I never saw a Lipoly on an SE. I have the batteries and charger hooked up to a regular ZZ and it screams. I have hooked one up to an SE and had the battery dangling on top but I don't care for that setup all that much. But with the lack of space in an SE, you gotta do what you gotta do I guess. If by any chance you can get a pic sith an SE Lipoy'd, either yours or if someone else would do it, that would be very cool and helpful.

Loganberry · #34 02-29-2004, 04:23 PM

i cant get any links or images up for some reason. this is the best i can do: go to search at *************.com while in the zz forum. then seach for johnk, not in the topic box but the user name box. there is plenty of info and pictures there.

Loganberry · #35 02-29-2004, 04:24 PM

i dont know why it keeps starring it out but it was *************.com

Loganberry · #36 02-29-2004, 04:26 PM

whats up with that. im not even entering as a link. its the same site i said up top.

clxfiles · #37 03-01-2004, 12:37 AM

Don't worry about it, I know the forum. I think it gets wiped out cuz these two forums are kinda competitors. They're both good but ya can't advertise the competition, ya know...

Anyway, I am way familiar with that post by JohnK but it is for a regular ZZ not an SE. I know how to make it work, I have a few Lithium cars myself, just no room to place the battery on a ZipZap SE unless you chop up the body. Is that what those guys were doing??? Chopping up the body??

Loganberry · #38 03-01-2004, 03:20 PM

the people chopped up the bodys bad in order to fit the cells in. they had to put supports on the body and everything. i know that there are lituim cells that are the size of the stock batteries in there. ill go to ebay and see. give you the scoop later.

Loganberry · #39 03-01-2004, 03:49 PM

theres button cells on there put they look a little big. some camera batteries look close.but i know that these people that put these in had to do some major work on the board in order for it to handle all those volts. they put new thicker wires everywhere. this isnt zz, its xmods, but if you go to atomic mods .com they show all the steps in puting in aaa lithium cells. xmods are a lot bigger too. they have cool videos on there to, like a gas rc jumping a house. you into anything else besides zz? i have a gas monster truck and that thing kicks. it goes over 40 mph. im into that more than zz since theres alot more stuff involed. its also more cooler since you can work on the motor, which you really cant on a zz. i can do anything on a motor, but i still cant do a whole lot on the board. i did do one mod on the motor of a zz. i rewonded the wires in the motor. that was hard work. it wasnt worth it. i only got a little more performance from it.

grimmreap3r · #40 07-15-2004, 11:43 PM

it works. take out the black cylinder thing like bewtween the battery and the plastic. the range seems fine but the moter makes a louder buzz noise

Loganberry · #41 07-16-2004, 08:25 AM

theres alot more power when ya do that isnt there. i had no probs and the thing flies. i was sick of it going so slow. glad it worked.

Azimov · #42 07-17-2004, 01:59 PM

I'm not sure I understand this mod. You are just removing a filter cap from the circuit. All RC vehicles have one to filter motor noise that interferes with the RX. I'm thinking the gain in speed would be very small if any at all.

Loganberry · #43 07-18-2004, 08:58 AM

no actually its a big increase in speed. im talking around a 60 percent speed increase. i dont know much about the electronics of a rc car but this really gives it a big speed increase. i dont know how but it does. all i did was cut it out with a pair of wire cutters. email me at loganberry89@aol.com if you have any questions. later

charliebrown · #44 07-23-2004, 01:39 AM

I'm not sure it's even a filter cap. It may be a regular capacitor. When you're going forward, the power is split between the motor and the capacitor. The capacitor is then being charged, taking some of the power being fed from the circuit board away....kinda acting like some sorta resistor or something. Maybe when you remove the capacitor, the full power can reach the motor, enhancing acceleration and speed....

this is based on some stuff from Mini-Z and Xmod science...there's a cap on the Xmod motor, some people say that they have removed it and the power increased....And for Mini-Z's, PN racing makes a 5.5 volt 4700 uf capacitor that you can install on the batteries, as long as you match the + and - polarities (VERY IMPORTANT! IF YOU GET THE CONNECTIONS WRONG, THEN YOU COULD DAMAGE THE CAPACITOR!!!), and when you turn the car on, the batteries charge the capacitor, and when you gun the throttle, the capacitor would dump all of the voltage into the system, enhancing acceleration. I'm thinking that maybe the capacitors on the Mini-Z/Xmod motors act like batteries and take some charging when current is applied to the motor terminals. if you remove them, then the motor is faster because there's no capacitor to split the power with, but range may decrease...I dunno why.

So, if the "filter" cap is there on an SE, it could possibly be taking some power away from the current given from the PCB. When you remove it, the car could go faster....

I really don't know what's going on here, this is just a theory, there's probably a 99% chance I'm spouting BS now (heh, I'm kinda famous around here for that

)

Chuckster...

Azimov · #45 07-23-2004, 02:00 AM

Well, only somewhat BS Chuck, lol. First, a capacitor is a capacitor. The one used across motor leads is called a filter cap because it filters the electromagnetic field produced by the running motor. See the brushes cause tiny little arcs in the motor that produce radio waves at a certain frequency. The filter cap filters this radio noise so it doesn't interfere with the reciever in the car. That's all it does.
Now the other arrangement you mention of putting a cap in parallel with the batteries could give you a bit of a boost out of the hole. See caps work just like batteries except for one small difference. Caps want to dump all of their accumulated current at once. Batteries release it at a constant rate pretty much until their dead. A cap hooked to the battery bank will charge up immediately when hooked up. When you hit the throttle, the cap dumps into the motor, and quickly discharges it's current until it reaches equalibrium with the batteries then your back to normal current until you let off the throttle to recharge the cap. It could be that the cap across the motor leads is too large. I have noticed it's an electrolytic cap and this may hinder motor revolutions especially in reverse. A small valued monolithic (disk) cap may work better there. But, I don't see a huge gain in forward speed simply from removing the filter cap. I may try this just to see what's going on.