Changing battery/inside connectors

[psycho_fling]

hi all

i am about to change all my connectors to bullet ones from tamiya, basically because tamiya keep failing on me!

any way is it ok to to put the on the batteries, and charger? im not sure if they can be soldeered but if yes is iytok to solder them the
bateries?

thanks alex

[ewan]

Changing battery/inside connectors

Yes yes yes. Though bullets arent that much of an improvement either. http://www.gimsonrobotics.com/shop_power-connectors.htmlhttp://www.gimsonrobotics.com/shop_p...onnectors.html

[psycho_fling]

Changing battery/inside connectors

also i am soldering the speedo wires and other wires to create 4wd, but if i cant solder the wire, would it be ok i to use copper wire? as i find this easier to solder, it would of cause be covered. but like i say i have yet to try my first method of wire

thanks alex

[woody]

Changing battery/inside connectors

Some types of wire are more difficult than others to solder.

Get some flux if you havent already.

Heres a guide that might help.
http://www.teamnovak.com/tech_info/how_to/solder/index.html#Anchor-ATTACHING-35326http://www.teamnovak.com/tech_info/h...-ATTACHING-353 26

[psycho_fling]

Changing battery/inside connectors

thanks woody

i saw above that about splitting wire, if this proves difficult could i use this technique and on need to solder one wire to each motor terminal?

thanks alex

[woody]

Changing battery/inside connectors

Yes.... Making A +1>Y from the wiring is probably easiest.

[psycho_fling]

Changing battery/inside connectors

i think ill take the Y option , if i get it done today ill post some pics check ive got it right

thanks alex

[psycho_fling]

Changing battery/inside connectors

just had a though on how to increase the speed of PR, could i just have two wheel drive and then have the other 2 wheels free wheeling? if yes would i need the other two wheels to be untapped? i.e. grub screws taken out

alex

[aliboy]

Changing battery/inside connectors

Well 2wd might give you more speed you will probably have less torque.
And the idea about have the other 2 wheels free wheeling is useless because if i am right on what your thinking is just having all 4 drill in the robot and then just undoing the bolts on 2 and having the wheels spin freely . That is just wasted space and weight if you have the drill in you may aswell use them. If not just take out the 2 sets of drill you arent going to use and just put casters on the undersided

[ewan]

Changing battery/inside connectors

I dont see why youd want two wheel drive like that. Why should you get more speed?

[psycho_fling]

Changing battery/inside connectors

well surly you should, instead of 4 motors running on 14.4v 2 are instead, there fore more for those wheels wont you?

alistair the thats also an option but it woud probably only be a tempoary thing

[ewan]

Changing battery/inside connectors

Nope. You do not understand the way that power is distributed in a parallel circuit. All four motors should get 14.4v. The overall current demands of the circuit may be higher leading to temporary voltage drops from the battery but nothing else. Theres a reason why others dont do as youre suggesting.

[typhoon_driver]

Changing battery/inside connectors

I like to use a mixture of ring crimp connectors with a bolt holding them together (just make sure that the bolt and connectors are insulated) or anderson connectors like the ones that ewan suggested for connections that shouldnt be permanent.

[psycho_fling]

Changing battery/inside connectors

right, thanks ewan for straightening that out,

at the last event my battteries once chargered werent fully charged as i had to put them on again, is there anyway roung this?

thanks alex

[psycho_fling]

Changing battery/inside connectors

also will a 2wd robot on 14.4v be faster than a 4wd? or would they be the same?

i apoligise if some has already hinted at this but just want to be sure

alex