Battery relocation problem

[Georgecheng]

Like to check any bro here do a battery relocation to rear before? How many gauge cable you all used for the main line? I currently using 4 gauge cable, is that enough? Apart from that, I put a fuse near the batt. The fuse will blown sometime when I crank the car. How much value of the fuse should I put? Even I use ANL 150A fuse also blown. Is there any problem?

[Yeobh]

If the 4 gauge cable didn't heat up after cranking then it is ok. Normally it is best to increase the size to 2 gauge as the run from battery located in the booth is about 5m and therefore the voltage drop will be much higher as compare to the orignal arrangment.

To kick start the engine requires very high torque and to do this the starter can easily draw up to 400amp for a split second - this hgih draw will blow your fuse. Basically there is not need for a inline fuse, for saftey you can install a cut-out switch on the battery terminal like those use in racing cars.

[Georgecheng]

That mean the crank up load can hit up to 400Amp that high? BTW, anyway to get 2 gauge cables and the price? Thanks

[Boyboy]

why relocate to the rear? is it to prolong batt life due to reduced heat exposure from engine? or for some performance reasons?

 

this may be a noobish qn, but i'm learning (we all shd).

[Georgecheng]

Shifting batt to rear can be of several reason, apart of what u mention, some do shift for car weight distribution or to create oversteer or understeer due to weight, for space up engine bay to do other thing, or to put dual batt setup, and believe a few more to go.

[Jonbummer]

my guess is that

1. yes prolong the battery life with mush less heat exposure

2. getting a MUCH bigger battery that the batt tray cannot

hold at the front.

 

dun think it's much of performance gain

but if one is into ICE then it could be

a must else car sure cannot take it!

 

but i gathered there's this one brand of batt

that provide 120Ah (if i recalled correctly)

with fast charging ability. quite small size relatively

can use up to 10years, i heard.

BUT.... it's ~$500 a pop!

 

cheers

Edited November 18, 2006 by Jonbummer

[Boyboy]

weight distribution? i thot the battery less than 10kilo.. but i guess to die hard trackies it will make a diff

 

thanx to u n jonbummer for the info

[Georgecheng]

Wooooo, 500 buck, think I rather keep changing the battery, will be much more realiable.

[Jonbummer]

that's wat i thot too!!!!

but the battery is always out of stock!

so wat can i say

 

but it's sold mainly to bros/sis who have some

monsters of a ICE in their ride

so bo bian, have to use this battery

the good of it is the fast charging ability

that make the battery very unique and sellable, i think

 

cheers

[Jonbummer]

 

me learning as u too

so share info lor

 

 

anyway my sentiment is like yours of weight distribution

but also like u mentioned a trackies or drifters will feel

the differences in it..

 

so qnn is, wat's your ride bro Georgecheng????

 

[Georgecheng]

Maybe what u mention is right. Maybe changing a higher rate alternator and with dual batt setup also not enough for these monster ICE. I seen malaysia van with Alien ICE setup that it is using about 8 battery setup for it. Too bad that time didn't have camera to take down to show, a very nice done up job.

[Yeobh]

Companies or shops that deal with arc welding equipment should have them.

[Yeobh]

Set up another DC parallel system with deep cycle ( traction ) batteries for your ICE. Charge the batteries externally as car alternator charging amp is just too high and overtime will cause pre-mature failure..Deep-cycle batteries are normally charged at very slow rate of not more than 1.5 amp. Depending on the amp/hr, the charging time from 0 to 100% charge can be as long as 72 hrs.

 

PS Deep-cycle ( traction ) batteries are commonly used in golf caddy, wheelchairs, electric scooters, sweeper etc.

Edited November 18, 2006 by Yeobh

[Boyboy]

well, some pple change bonnet to carbon fiber. i think weight savings also similar to batt relocation?

 

but to prolong battery life is a very practical reason imho

[Jonbummer]

8 batteries????

 

but i'm quite sure, he cannot hear any

drivers horning at him!

[Jonbummer]

yes prolong the life of the battery

and having the battery working at its best

do make very good reason to relocate.

 

 

bonnet to CF is well subjective

some bonnet can be real heavy in some rides

and if a CF bonnet can shave off say some

significant weight off, then it's worth

 

well, looking Fierce can increase BHP too mah

[Xclang]

Suggestion maybe need supercapacitor (ezstab, pivot..) up front for vehicle cranking then?