P plate training ...not
in [Aussie Motorcycles]
|
Prev: new tv project
Next: Honda VTR coolant boiling ?
From: G-S on 6 Feb 2007 02:09 Knobdoodle wrote: > Car alternators and older large-bike alternators use a brush to power the > electromagnetic rotor. This is the 'standard' type of common alternator. > The more power into the rotor, the stronger the magnetism and therefore the > more power out. The downside is that they're more expensive to manufacture > and the brush wears out. Brushes are easy (and cheap) to change. > The new ones use permanent magnets so they run flat-out all the time. The > downside is they take more energy from the engine and turn all the unneeded > output into heat. > Very sucky design too. G-S
From: G-S on 6 Feb 2007 02:11 alxr wrote: > driving with no headlights on at NIGHT is ...um...stoopid...and dangerous > for other traffic who cannot see an oncoming car (turning from side > street...whatever..) > Driving with no headlights on at NIGHT is stoopid... but the original post clearly said 'driving of with no driving lights on'. I seldom use my driving lights either (even when my headlights are on). G-S
From: Knobdoodle on 6 Feb 2007 03:06 "G-S" <geoff(a)castbus.com.au> wrote in message news:12sg9upj9fcbc38(a)corp.supernews.com... > Nev.. wrote: >> >> My alternator keeps my battery at a full charge, which means it must be >> providing more charge than I actually use, all the time, which means that >> any charge required for accessories like lights and radio is being >> produced all the time, regardless of whether or not I'm actually using >> them, which means that no more fuel is required. >> >> How's that for logic? >> > Going well until the last bit which should read... "which means that fuel > use varies partly according to alternator output" :) > Well yessss... but I think Nev's point was that the alternator output is not affected by headlights, accessories, etc,.. so that's not something you have any control over. -- Clem (on modern bikes)
From: Knobdoodle on 6 Feb 2007 03:08 "G-S" <geoff(a)castbus.com.au> wrote in message news:12sga8p3h9gr592(a)corp.supernews.com... > paulh wrote: >> Running a headlight doesnt >> increase the load on the engine because the engine doesnt provide >> electricity based on demand, it provides the same amount regardless of >> load. > > It produces electricity based on load demand (modified by the actual > battery capacity and storage and the generators 'size'). > Alternators with brushes do but modern bikes use brushless alternators that aren't load-variable. (As far as I understand it) -- Clem
From: Knobdoodle on 6 Feb 2007 03:13
"G-S" <geoff(a)castbus.com.au> wrote in message news:12sgae8aasvp9dc(a)corp.supernews.com... > Knobdoodle wrote: >> Car alternators and older large-bike alternators use a brush to power the >> electromagnetic rotor. > > This is the 'standard' type of common alternator. > >> The more power into the rotor, the stronger the magnetism and therefore >> the more power out. The downside is that they're more expensive to >> manufacture and the brush wears out. > > Brushes are easy (and cheap) to change. > Not if you're paying your local bikeshop to do the work!! > >> The new ones use permanent magnets so they run flat-out all the time. >> The downside is they take more energy from the engine and turn all the >> unneeded output into heat. >> > Very sucky design too. > Yeah it offends me also but just like points ignition it's a thing of the past now. We've traded "runs forever with just a regular adjustment/replacement" for "runs faultlessly for 3000 hours then fails irretrievably"... Oh well..... -- Clem |