Russ, there are switches for automatic shutdown of the engine if there is a
loss of oil pressure. I had one on my drag boat. SImple to wire into the
coil loop:circuit is closed with pressure, opens at something above zero
(like maybe 10 or 20 psi). As to not fusing, yeah I agree but burnig down
the harness has exactly the same effect of blowing the fuse: disaster. Oh, I
never saw the "little" graph, can you send it directly to me?
mayf
----- Original Message -----
From: "Russel Mack" <rtmack@concentric.net>
To: <land-speed@autox.team.net>
Sent: Saturday, January 25, 2003 3:08 PM
Subject: RE: Dry sump
> Mayf:
> glad you are interested in this.
>
> yeah, as you realized, it does appear (from the graph I found) that not
only
> does the horsepower required to drive the "parasites" (including oil pump)
> go up with rpm-- it seems to be a (slightly) exponential increase-- I
> suspect due to the less-than-100% efficiencies of the parasites,
> themselves. Graph is very small, however, and not meant for us to derive
> really accurate data. Maybe I'll be able to find something better.
>
> For some (rough) numbers, see my reply to Glenn.
>
> I agree that electrical system management would become a critical issue,
> but-- like Glenn, I don't think I'd want to fuse the oil pump circuit;
> rather burn-down a harness than an engine! I'm thinking in terms of
> circuitry that would not allow any other engine systems to work until the
> oil pumps are turned on (by separate switch). That way, the oil could be
> circulated before the engine is cranked, and the oil flow could be
> maintained when you "kill" the engine for a plug-check coast down-- adding
> even more engine protection benefits to the dry-sump system.
> Russ, #1226B
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