P plate training ...not

Nice one, centurion. I'm wondering if there's actually a case to be made
that any fuel consumption increase/decrease is not even detectable in
some engines.

Given the large number of variables, it may be that the variance between
any measurement of fuel used in one test compared to another may not be
reproducible. In some engines.

 

I'm not. Hammo plays stupid so well, sometimes I think it's not an act.

No, no, no. Electicity from the alternator is free power, apparently. I
wonder if I can run my house off it?

Efficiency is the whole point, isn't it. Use 1 Kw, use no extra fuel to
produce it. How much more efficient to you want. I don't understand why
Western Power keeps sending me electricity bills.

The light globe has a very accurately measured vacuum orifice, when the
switch is turned on a 60W globe sucks 60 watts of electrickery from the
wires. When all the vacuum runs out, the globe stops working and you need to
buy a new one. A good globe should last 2000 hours, meaning it initially
contains 120Kw of vacuum. If you buy one of those cheap globes from K-Mart,
you get gypped on the vacuum, this is why they don't last so long.

Theo

 

There's the Australian-made Barbarian now. Like a Boss Hoss, only better
built.

I'd love one of those with the alloy Chev donk.

I remember when I was younger you'd pay twenty grand U.S. for a bare
alloy Chev block from Keith Black. Now you get 'em in family cars off
the showroom floor...

 

That sounds like a come-on. I'm going to tell Vickers.

Theo

 

Yes, and, your point was? Big's calculations seem pretty sensible to me
as back-of-the-envelope estimates go. They agree near enough with G-S's
experiment, and if G-S repeated his measurements a few times back and
forth then it's not such a bad experiment. "The lights use energy, and
that energy has to come from the fuel" seems pretty justifiable,
thermodynamically speaking.

There's the issue of shunt regulation, still, and for a shunt regulated
vehicle having the lights on or off won't make any difference. I'm
still looking into this, I know there are modern switch-mode regulators
for bikes (the EnDuraLast generator kit used one) but I don't know when
or whether they were widely adopted.

The XLV regulator, which seems to be a pretty typical eighties Honda
design, is actually kind of a "switch-shunt" regulator, in that it seems
to shunt the phases with SCRs. This would cause 90% of the voltage
drop (and thus the waste heat) to be across the generator coils rather
than the SCR junction. This heat would be taken away by the engine oil.

The EnDuraLast one I mention is "switch-series", and when I get the XLV
running again I'll try some experiments and maybe replace the regulator
with a better one.

Anyone got one of the infamous VFR regulators handy if I can work out a
simple test to tell the difference?

Humour me. I'm feeling very stupid today, and I can't work out whether
you think you have a point or you're just trolling on.

-----sharks

 

You don't appear to understand the term 'idle' in realtion to buses. Buses,
and diesel trucks, have an 'idle' adjust under the dashboard.

Do any of those systems generate power without using any fuel?

Theo

 

Yeah mate, just to look at the pulse widths: you can't tell a hell of a
lot (especially given the +/-10% or so tolerance of the injectors) but
it should give you a nice relative figure. Rather than using a manual
CRO it'd be better to feed all the signals into labview or similar and
sum the pulsewidths from each cylinder over time.

I'll try not to post sensible bits too often so as not to confuse you!

-----sharks

 

Our friend Hambone thinks he is playing Devil's Advocate, but doesn't appear
to have grasped the point that a Devil's Advocate argues the opposite
viewpoint. Hambone thinks it means talking about something totally unrelated
to the original debate.

Theo

 

There's a couple in WA. Well, less one. Some guy managed to kill himself on
one, but surely that was expected?

Theo

 

Different music on the radio, too!

Professor G-S's experiment is actually pretty controlled, by comparison.

-----sharks

 

MacQuarie Concise Dicctionary
agreeance/uh'greeuhns/

noun agreement.Usage: This word has recently come into occasional use in
place of agreement in phrases such as in agreeance with and with your
agreeance. It actually dates back to the 16th century.

Theo

 

Hamish, you're full of shit.

big

 

Yeah, he's in one of his moods...

Can someone post up a new thread if anything interesting turns up in
this one (particularly if Hammo actuallly does any calculations that are
actually relevant to how much fuel headlights use)?

big

 

How does it go? "Look at the silly monkey."

So lets see the score.. before.. G-S and Clem were right.. and GB was
wrong. Now apparently GB and G-S are right, and Clem, (Who did the
experiment on EFI vehicles and found that the revs DID drop, completely
contraditing your latest assertion) is wrong... so that would make
Hammo right, and he agreed with me to some extent, so I must be right.

Nev..
'04 CBR1100XX

 

I can't find 'dammit' in my Pocket Oxford. Who'd you learn that from...
Robin Gray?

Nev..
'04 CBR1100XX

 

;-P to you and Theo both !

JL
damn it Janet.

 

Just covering all the possibilities Nev; no matter how unlikely!

 

[scrunches up brow]
What on earth are you Hamsturbating about now?!!?
When the engine is idling and you switch on the lights the RPM drops.
On the older car car it stays down and on the other it then returns to the
original idle speed.

 

Perhaps.
Low-wattage lights, dodgy regulators, slipping fan-belts and low-power
alternators would also contribute to it being hard or impractical to
measure.
Doesn't change the principle though.

 

Actually it's the bloke who's trying to score points by doing silly
selective quoting who's looking like the goose at the moment Nev!