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A 12V LA battery sits at 14.5 only when it=E2=80=99s been freshly =
charged with no load applied. As soon as electrons start being =
rearranged it drops to 12.9 and heads lower quickly. Race cars runniong =
total loss suffer from the low voltage of LA (lead acid) batteries under =
loads. Pertronics poops out, other stuff works marginally. The easy fix =
is a lithium battery. Not only are they much lighter, they also have a =
much flatter discharge curve and higher nominal voltage Li-ion is =
typically 14 V, Li
FePO4 (caled LiFe geneerally) is 12.8. They work extremely well, last a =
very long time, and are zero maintenance other than charging them. Other =
than in endurance races opr an time you need lights I think alternators =
in race cars are nothing but trouble, take horsepower to turn, have =
belts, and die at lousy times. Other than that they=E2=80=99re great.
> On May 20, 2025, at 3:35=E2=80=AFAM, Rich Hahn via Fot =
<fot@autox.team.net> wrote:
>=20
> Had the same thing happen to me at Put In Bay with my braided clutch =
line!! At least I could stop!!
>=20
> On Monday, May 19, 2025 at 10:24:19 PM EDT, Mark Bradakis via Fot =
<fot@autox.team.net> wrote:
>=20
>=20
> Back in the days of IVR running events at Wendover, I switched to a=20
> single wire alternator in the Killer Spit. I had to fab some brackets=20=
> to make it fit, but it worked well. The first event I ran at Wendover=20=
> went very well, I was pleased.
>=20
> The second event was a bit different. First race I was doing fine,=20
> getting passed bt the Mustangs and Corvettes and RX-7s as usual. I =
came=20
> to the hairpin before the main straight, hit the brakes and nothing=20
> happened. Well, it seemed the car doubled its speed when the brakes=20=
> failed. I of course missed the hairpin entirely, and coasted along =
the=20
> concrete for quite a ways. Got back to the pits, popped the bonnet =
and=20
> immediately saw the problem. The single wire between the battery and=20=
> the alternator had come undone from the alternator. The wire was tied=20=
> to the chassis with a nylon tie a foot or two from the alternator. =
The=20
> O ring on the end of the wire had limited range of movement. What =
kept=20
> it from shorting out on the chassis was the brake line to the left=20
> front. It bounced around. Ever hear of EDM, electric discharge=20
> machining? Well, the wire was still attached to the battery on the=20
> other end. Every time the O ring bounced on the brake line, it =
sparked.=20
> And soon enough the sparks had eaten through the brake line, and all=20=
> the fluid drained out of the system. No fluid, no brakes!
>=20
> mjb.
>=20
>=20
> _______________________________________________
>=20
> http://www.fot-racing.com <http://www.fot-racing.com/>
>=20
> Donate: http://www.team.net/donate.html
> Archive: http://autox.team.net/archive =
http://www.team.net/pipermail/fot
> Unsubscribe/Manage: =
http://autox.team.net/mailman/options/fot/putinbaytr3@yahoo.com
>=20
>=20
> _______________________________________________
> fot@autox.team.net
>=20
> http://www.fot-racing.com
>=20
> Donate: http://www.team.net/donate.html
> Archive: http://autox.team.net/archive =
http://www.team.net/pipermail/fot
> Unsubscribe/Manage: =
http://autox.team.net/mailman/options/fot/bill@ponostyle.com
>=20
>=20
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charset=utf-8
<html><head><meta http-equiv=3D"content-type" content=3D"text/html; =
charset=3Dutf-8"></head><body style=3D"overflow-wrap: break-word; =
-webkit-nbsp-mode: space; line-break: after-white-space;">A 12V LA =
battery sits at 14.5 only when it=E2=80=99s been freshly charged with no =
load applied. As soon as electrons start being rearranged it drops to =
12.9 and heads lower quickly. Race cars runniong total loss suffer from =
the low voltage of LA (lead acid) batteries under loads. Pertronics =
poops out, other stuff works marginally. The easy fix is a lithium =
battery. Not only are they much lighter, they also have a much flatter =
discharge curve and higher nominal voltage Li-ion is typically 14 V, =
Li<div>FePO4 (caled LiFe geneerally) is 12.8. They work extremely well, =
last a very long time, and are zero maintenance other than charging =
them. Other than in endurance races opr an time you need lights I think =
alternators in race cars are nothing but trouble, take horsepower to =
turn, have belts, and die at lousy times. Other than that they=E2=80=99re =
great.</div><div><br =
id=3D"lineBreakAtBeginningOfMessage"><div><br><blockquote =
type=3D"cite"><div>On May 20, 2025, at 3:35=E2=80=AFAM, Rich Hahn via =
Fot <fot@autox.team.net> wrote:</div><br =
class=3D"Apple-interchange-newline"><div><div><div =
class=3D"ydpf0ad7e93yahoo-style-wrap" style=3D"font-family:Helvetica =
Neue, Helvetica, Arial, sans-serif;font-size:13px;"><div></div>
<div dir=3D"ltr" data-setdir=3D"false">Had the same thing happen =
to me at Put In Bay with my braided clutch line!! At least I could =
stop!!</div><div><br></div>
=20
</div><div id=3D"ydp7ee3b2eyahoo_quoted_8118597061" =
class=3D"ydp7ee3b2eyahoo_quoted">
<div style=3D"font-family:'Helvetica Neue', Helvetica, =
Arial, sans-serif;font-size:13px;color:#26282a;">
=20
<div>
On Monday, May 19, 2025 at 10:24:19 PM EDT, Mark =
Bradakis via Fot <fot@autox.team.net> wrote:
</div>
<div><br></div>
<div><br></div>
=20
=20
<div><div dir=3D"ltr">Back in the days of IVR running =
events at Wendover, I switched to a <br clear=3D"none">single wire =
alternator in the Killer Spit. I had to fab some brackets <br =
clear=3D"none">to make it fit, but it worked well. The first event =
I ran at Wendover <br clear=3D"none">went very well, I was pleased.<br =
clear=3D"none"><br clear=3D"none">The second event was a bit =
different. First race I was doing fine, <br clear=3D"none">getting =
passed bt the Mustangs and Corvettes and RX-7s as usual. I came =
<br clear=3D"none">to the hairpin before the main straight, hit the =
brakes and nothing <br clear=3D"none">happened. Well, it seemed =
the car doubled its speed when the brakes <br clear=3D"none">failed. =
I of course missed the hairpin entirely, and coasted along the <br =
clear=3D"none">concrete for quite a ways. Got back to the pits, =
popped the bonnet and <br clear=3D"none">immediately saw the =
problem. The single wire between the battery and <br =
clear=3D"none">the alternator had come undone from the alternator. =
The wire was tied <br clear=3D"none">to the chassis with a nylon tie a =
foot or two from the alternator. The <br clear=3D"none">O ring on =
the end of the wire had limited range of movement. What kept <br =
clear=3D"none">it from shorting out on the chassis was the brake line to =
the left <br clear=3D"none">front. It bounced around. Ever =
hear of EDM, electric discharge <br clear=3D"none">machining? =
Well, the wire was still attached to the battery on the <br =
clear=3D"none">other end. Every time the O ring bounced on the =
brake line, it sparked. <br clear=3D"none"> And soon enough the =
sparks had eaten through the brake line, and all <br clear=3D"none">the =
fluid drained out of the system. No fluid, no brakes!<br =
clear=3D"none"><br clear=3D"none">mjb.<div =
class=3D"ydp7ee3b2eyqt5752381792" id=3D"ydp7ee3b2eyqtfd17206"><br =
clear=3D"none"><br =
clear=3D"none">_______________________________________________<br =
clear=3D"none"><a shape=3D"rect" href=3D"mailto:fot@autox.team.net"; =
rel=3D"nofollow" target=3D"_blank">fot@autox.team.net</a><br =
clear=3D"none"><br clear=3D"none"><a shape=3D"rect" =
href=3D"http://www.fot-racing.com/"; rel=3D"nofollow" =
target=3D"_blank">http://www.fot-racing.com</a><br clear=3D"none"><br =
clear=3D"none">Donate: <a shape=3D"rect" =
href=3D"http://www.team.net/donate.html"; rel=3D"nofollow" =
target=3D"_blank">http://www.team.net/donate.html</a><br =
clear=3D"none">Archive: <a shape=3D"rect" =
href=3D"http://autox.team.net/archive"; rel=3D"nofollow" =
target=3D"_blank">http://autox.team.net/archive</a> <a shape=3D"rect" =
href=3D"http://www.team.net/pipermail/fot"; rel=3D"nofollow" =
target=3D"_blank">http://www.team.net/pipermail/fot</a><br =
clear=3D"none">Unsubscribe/Manage: <a shape=3D"rect" =
href=3D"http://autox.team.net/mailman/options/fot/putinbaytr3@yahoo.com"; =
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target=3D"_blank">http://autox.team.net/mailman/options/fot/putinbaytr3@ya=
hoo.com</a><br clear=3D"none"><br clear=3D"none"><br =
clear=3D"none"></div></div></div>
</div>
=
</div></div>_______________________________________________<br>fot@autox.t=
eam.net<br><br>http://www.fot-racing.com<br><br>Donate: =
http://autox.team.net/archive =
http://www.team.net/pipermail/fot<br>Unsubscribe/Manage: =
http://autox.team.net/mailman/options/fot/bill@ponostyle.com<br><br><br></=
div></blockquote></div><br></div></body></html>=
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http://www.fot-racing.com
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