[Healeys] Fuel gauge damper's super capacitor
Kees Oudesluijs
coudesluijs at chello.nl
Thu Nov 15 06:20:09 MST 2018
I would not be to worried about that. For a spark you would need a
relatively high voltage. That would be more likely without the
capacitor. A capacitor is often used to prevent sparking (e.g in the
distributor or petrol pump). If there is a spark it will be inside the
sender unit which will eliminate problems and the mixture inside the
tank will probably be to saturated to ignite anyway.
Kees Oudesluijs
Op 15-11-2018 om 12:54 schreef John Harper:
> Simon
>
> Don't do it. Petrol will ignite if sufficient energy is applied. A
> capacitor could provide such energy.
>
> Best regards
>
> On Thu, 15 Nov 2018 at 10:15, <simon.lachlan at alexarevel.plus.com
> <mailto:simon.lachlan at alexarevel.plus.com>> wrote:
>
> Hi,
>
> Questions for the tech type super-gurus.
>
> See the attached article, something I picked up on the internet
> &/or from this list.
>
> I’ve finally got round to doing it and have bought a pair of
> super-capacitors (SC), below:
>
> https://www.ebay.co.uk/itm/2-Pcs-4-0F-5-5-V-Super-Capacitor-H-Type-Button-Smart-Capacitance-Universal/272412952404?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2060353.m2749.l2649
>
> The article infers to me, at least, that the + terminal of the SC
> is wired directly to the same terminal connection on the gauge as
> the wire from the tank sender unit. The – terminal is earthed. How
> does that system work? Won’t the tank’s fluctuating signal, for
> want of a better word, simply bypass the SC and carry on
> flickering the needle??
>
> And, assuming I ever get the wiring sorted out, will the SC get
> hot? Mine has a metal case and I’ve had to thoroughly insulate it.
> I have visions of the fuel gauge working nicely until the
> insulation catches fire………
>
> Simon
>
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> --
> Best wishes
>
> John Harper
>
> AHC UK 100 Register Secretary
>
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