upgrade from cloth covered FLs to new gen FFL's debate

[jono]

It will almost be 1.00am when I press post on this one, but its got me...

 

when the issue arises of upgrading from the genuine fusible links covered in a clothy stuff to the newer generation Female Fusible links,

 

people ask which swap for what

 

those who have said the auto elec said just swap colour for colour, or the internet threads suggest it - all say they have never had any trouble with this

 

well I reckon if you followed this for some fuse links you just beefed up the fuses rsistance by double, just ...the rest of your system is not beefed up, and usually we dont have FLs burn out too often, mostly corrosion issues at age 23

 

let me say, if you have gone colour for colour and you do burn a FFL out, the rest of your electrics gonna be fried well and truly if our figures stack up

 

take the black cloth one for example, i think we worked out it was a 40A or protecting a circuit 'worth' up to 40A

 

The black FFL is 80A like on Toyota glow plug circuits, so they can glow red/orange hot ! Wanna see disaster on your wires glowing a safe red hot before the 80A FFL blows ??

 

We as a collective arrived at look at the cloth one in place, say green, a green FFL is rated at 40 so halve that figure and use an FFL rated at 20 to replace the green fabric ones

 

The red fabric/cloth/originals convert to FFL red is 50, so find an FFL of 25 if you can, think I went down to 20A FFL

 

I reckon safer to have a lower FFL blow than a FFL rated at double what your system was designed for

 

Now, having just busted into my gmail account since I almost carked it in July last year, I have 442 emails to catch up on!

 

Hope this theory sparks up more debate than old Subes !!

[GeneralDisorder]

A fusible link is just a short section of smaller diameter wire. You can find charts that reccomend AWG to use for a link given the circuit wire size/ampacity. 

 

Don't over think it. Figure out what gauge to use, crimp some spades on a short section - instant "fusible link"

 

GD

Edited October 24, 2017 by GeneralDisorder

[jono]

Yep, all well and god that you made comment and some advice GD, but the gist of my post was more to make people think about the upgrade to the newer style of FL's in regard to the general advice just to swap colour for colour and the fact that people say they have no issues so far. If the swap colour for colour halved the the FFL capacity people would likely have problems.

 

What I am trying to express would be say like my workmate when we were just starting to own and drive cars...his three Amp fuse in his sixties radio blew so he supposedly upped? the fuse of his delicate piece of gear to an unknown rated bit of cigarette packet foil and went on to cook his cars radio

 

A problem beyond your fusible links is gonna be less likely to blow the FFL if you have doubled the rating.

 

Every wreck I have or pass I grab the old FL's but people are finding it easier and more convenient and they look like they wont corrode - fit FFLs which are the new gen style plastic units

 

I can say I have followed our theory and calculations and swapped one of my cars to the ratings half that or close to half the colour for colour swaps and also had no problems but felt happier knowing I was running half what others were, and waiting for that one time an FFL needs to blow, if ever. I have only ever seen fabric FL's break or corrode from age