Are you sure about that???
If the wattage is the same, and assuming both bulbs are radiating (mostly) visible light - wouldn't the same wattage be absorbed as heat?
The resistance of the 220V bulb may be less to get the same wattage, and the current would be less. But I would expect the heat product to be the same per watt - regardless of the voltage driving it.
By the same logic, I would expect 2kw driving a 24V motor to result in roughtly the same thrust as 2kw driving a 48V motor. In this case, you're pulling less current from the batteries per unit time, so you'd get a better discharge curve from the batteries. But I would hope/expect the prop to be feeling the same thing.
John
From: danbollinger <no_reply@yahoogroups.com>
To: electricboats@yahoogroups.com
Sent: Monday, November 26, 2012 12:26 PM
Subject: [Electric Boats] Re: Paint for ME0913
To: electricboats@yahoogroups.com
Sent: Monday, November 26, 2012 12:26 PM
Subject: [Electric Boats] Re: Paint for ME0913
Keep in mind that if both bulbs are rated the same wattage, the 220 volt bulb will put out 25% of the heat that the 110 volt bulb does. The reason is that Wattage = Volt(2) / Ohms.
--- In mailto:electricboats%40yahoogroups.com, <VE7YID@...> wrote:
>
> My goodness....after all these years. What a good idea! Thanks..Erik
>
> --- On Sun, 11/25/12, Bob Noble <bnoble@...> wrote:
>
> > From: Bob Noble <bnoble@...>
> > Subject: Re: [Electric Boats] Re: Paint for ME0913
> > To: mailto:electricboats%40yahoogroups.com
> > Date: Sunday, November 25, 2012, 7:54 PM
> > If you really don’t need the light,
> > try a 220 volt light instead in the 110
> > volt socket. These will give you half the watts or so in,
> > and should last
> > forever.
> > Here is one place to get them.
> >
> > http://www.buylightfixtures.com/220-volt-light-bulbs.aspx
> >
> > Bob Noble
> > Blog: http://bnoble.users.sonic.net/wordpress/
> > Website: http://www.sonic.net/bnoble
> > -----Original Message-----
> > From: VE7YID@...
> > Sent: Sunday, November 25, 2012 12:52 PM
> > To: mailto:electricboats%40yahoogroups.com
> > Subject: Re: [Electric Boats] Re: Paint for ME0913
> >
> > good post, I have been using the old lite bulb in a stove
> > pipe on a block of
> > wood to chase moisture...Would u know the life span of these
> > ceramic
> > (Exo-terra-40 watt) bulbs? Most of the bulbs I
> > have been using burn out
> > quite quickly. Thanks
> >
> > --- On Sun, 11/25/12, Reid <axius@...>
> > wrote:
> >
> > > From: Reid <axius@...>
> > > Subject: [Electric Boats] Re: Paint for ME0913
> > > To: mailto:electricboats%40yahoogroups.com
> > > Date: Sunday, November 25, 2012, 11:34 AM
> > > I think you will find this is gives
> > > you 40W of heat instead of 10W heat from a 60W bulb?
> > >
> > > http://www.ebay.ca/itm/EXO-TERRA-CERAMIC-HEAT-EMITTER-WAVE-HEATER-REPTILE-40W-/400218656258?pt=LH_DefaultDomain_0&hash=item5d2ee40e02&_uhb=1#ht_2399wt_1135
> > >
> > > JWID
> > >
> > > --- In mailto:electricboats%40yahoogroups.com,
> > > m riley <mkriley48@> wrote:
> > > >
> > > > zinc only protects steel because it is higher on
> > the
> > > galvanic scale than steel. The white metal used for
> > electric
> > > motors has zinc as one of its major components so no
> > > protection.
> > > > wooden boats are damp, best effort would be to
> > reduce
> > > it, as it is attacking
> > > > all the components in the motor not just the
> > case.
> > > > Old time remedy is to put a 60watt light bulb in
> > a
> > > water tight fixture next to the motor and leave it
> > plugged
> > > in at all times.
> > > > the heat dries out the motor if you have
> > > ventilation.
> > > > mike
> > > >
> > >
> > >
> > >
> > > ------------------------------------
> > >
> > > Yahoo! Groups Links
> > >
> > >
> > >Â Â Â Â mailto:electricboats-fullfeatured%40yahoogroups.com
> > >
> > >
> >
> >
> > ------------------------------------
> >
> > Yahoo! Groups Links
> >
> >
> >
> >
> >
> > ------------------------------------
> >
> > Yahoo! Groups Links
> >
> >
> > Â Â mailto:electricboats-fullfeatured%40yahoogroups.com
> >
> >
>
--- In mailto:electricboats%40yahoogroups.com, <VE7YID@...> wrote:
>
> My goodness....after all these years. What a good idea! Thanks..Erik
>
> --- On Sun, 11/25/12, Bob Noble <bnoble@...> wrote:
>
> > From: Bob Noble <bnoble@...>
> > Subject: Re: [Electric Boats] Re: Paint for ME0913
> > To: mailto:electricboats%40yahoogroups.com
> > Date: Sunday, November 25, 2012, 7:54 PM
> > If you really don’t need the light,
> > try a 220 volt light instead in the 110
> > volt socket. These will give you half the watts or so in,
> > and should last
> > forever.
> > Here is one place to get them.
> >
> > http://www.buylightfixtures.com/220-volt-light-bulbs.aspx
> >
> > Bob Noble
> > Blog: http://bnoble.users.sonic.net/wordpress/
> > Website: http://www.sonic.net/bnoble
> > -----Original Message-----
> > From: VE7YID@...
> > Sent: Sunday, November 25, 2012 12:52 PM
> > To: mailto:electricboats%40yahoogroups.com
> > Subject: Re: [Electric Boats] Re: Paint for ME0913
> >
> > good post, I have been using the old lite bulb in a stove
> > pipe on a block of
> > wood to chase moisture...Would u know the life span of these
> > ceramic
> > (Exo-terra-40 watt) bulbs? Most of the bulbs I
> > have been using burn out
> > quite quickly. Thanks
> >
> > --- On Sun, 11/25/12, Reid <axius@...>
> > wrote:
> >
> > > From: Reid <axius@...>
> > > Subject: [Electric Boats] Re: Paint for ME0913
> > > To: mailto:electricboats%40yahoogroups.com
> > > Date: Sunday, November 25, 2012, 11:34 AM
> > > I think you will find this is gives
> > > you 40W of heat instead of 10W heat from a 60W bulb?
> > >
> > > http://www.ebay.ca/itm/EXO-TERRA-CERAMIC-HEAT-EMITTER-WAVE-HEATER-REPTILE-40W-/400218656258?pt=LH_DefaultDomain_0&hash=item5d2ee40e02&_uhb=1#ht_2399wt_1135
> > >
> > > JWID
> > >
> > > --- In mailto:electricboats%40yahoogroups.com,
> > > m riley <mkriley48@> wrote:
> > > >
> > > > zinc only protects steel because it is higher on
> > the
> > > galvanic scale than steel. The white metal used for
> > electric
> > > motors has zinc as one of its major components so no
> > > protection.
> > > > wooden boats are damp, best effort would be to
> > reduce
> > > it, as it is attacking
> > > > all the components in the motor not just the
> > case.
> > > > Old time remedy is to put a 60watt light bulb in
> > a
> > > water tight fixture next to the motor and leave it
> > plugged
> > > in at all times.
> > > > the heat dries out the motor if you have
> > > ventilation.
> > > > mike
> > > >
> > >
> > >
> > >
> > > ------------------------------------
> > >
> > > Yahoo! Groups Links
> > >
> > >
> > >Â Â Â Â mailto:electricboats-fullfeatured%40yahoogroups.com
> > >
> > >
> >
> >
> > ------------------------------------
> >
> > Yahoo! Groups Links
> >
> >
> >
> >
> >
> > ------------------------------------
> >
> > Yahoo! Groups Links
> >
> >
> > Â Â mailto:electricboats-fullfeatured%40yahoogroups.com
> >
> >
>
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