[Healeys] Fuel gauge damper's super capacitor

[Kees Oudesluijs]

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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