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I am curious to know if anyone has attempted to use the technic motors
and gears to build their own train motor.
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In lugnet.trains, Wayne Jackson wrote:
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I am curious to know if anyone has attempted to use the technic motors
and gears to build their own train motor.
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Brickshelf user swoofty built one
not too long ago.
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In lugnet.trains, Wayne Jackson wrote:
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I am curious to know if anyone has attempted to use the technic motors
and gears to build their own train motor.
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I did one too, to show at a BeLUG event last november, but never got around to
do decent pictures or post them here. The train isnt as nice as Swooftys, but
the principle for driving the wheels appears to be the same:
Which is pretty straightforward. Doing a nice train around it is, to me, more
difficult, so I just redid it the 7740 way, which is my idea of a train.
What I did to get it funnier was stuff two medium PF motors in there, and couple
them with a differential so that I could get 4 different speeds in both
directions - as the current PF remote doesnt do PWM. (And I didnt know the
receiver could at the time)
Well, more pictures there if youre interested; maybe Ill do more about it
someday (it seems that moving requires a tremendous amount of non-LEGO time):
http://www.meltingbricks.net/pictures/galleries/power_function_7740/
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In lugnet.trains, Jean-Marc Nimal wrote:
> In lugnet.trains, Wayne Jackson wrote:
> > I am curious to know if anyone has attempted to use the technic motors
> > and gears to build their own train motor.
>
> I did one too, to show at a BeLUG event last november, but never got around
> to do decent pictures or post them here. The train isn't as nice as
> Swoofty's, but the principle for driving the wheels appears to be the same:
>
> <<http://www.meltingbricks.net/pictures/galleries/power_function_7740/slides/IMG_3597.JPG>>
>
> Which is pretty straightforward. Doing a nice train around it is, to me, more
> difficult, so I just redid it the 7740 way, which is my idea of a train.
>
> What I did to get it funnier was stuff two medium PF motors in there, and
> couple them with a differential so that I could get 4 different speeds in
> both directions - as the current PF remote doesn't do PWM. (And I didn't know
> the receiver could at the time)
>
> Well, more pictures there if you're interested; maybe I'll do more about it
> someday (it seems that moving requires a tremendous amount of non-LEGO time):
>
> <http://www.meltingbricks.net/pictures/galleries/power_function_7740/>
anyone care to chime in on how this setup does with pulling power?
ondrew
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In lugnet.trains, Ondrew Hartigan wrote:
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anyone care to chime in on how this setup does with pulling power?
ondrew
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Well, bear in mind Im no train expert myself - and that this setup was thrown
together a bit hastily; in particular, one gear train was too loose and would do
an horrible noise when tortured.
That said, I used it to pull a few of Ludo Soetes Belgian railcars, which are
quite heavy, and it seemd to bear the load without trouble. It probably wouldnt
take more than 10 regular cars, but I honestly dont know.
Another issue is the friction on the rails - the standard bands provided with
the RC wheels arent too good. I tried some alternates in Brasschaat that
someone else had made, but it wasnt better. Didier Enjary was kind enough since
then to point me to a standard LEGO rubber belt
(x71) which works like a charm, but I
didnt try it in real conditions.
Id happily do more tests, but thatll have to wait as Im busy for the moment.
Ill probably take that model, or a better one, to FanaBriques in Rosheim and
see what kind of speed I can get from such a setup.
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In lugnet.trains, Jean-Marc Nimal wrote:
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In lugnet.trains, Ondrew Hartigan wrote:
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Another issue is the friction on the rails - the standard bands provided with
the RC wheels arent too good. I tried some alternates in Brasschaat that
someone else had made, but it wasnt better. Didier Enjary was kind enough
since then to point me to a standard LEGO rubber belt
(x71) which works like a charm, but I
didnt try it in real conditions.
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Hi,
On the subject, be sure to check Steve Bariles RailBricks #2 article about the
PFS train. (page 6-7) - http://www.railbricks.com.
Ive been able to point this at Jean-Marc but thats (AFAIK) an original idea by
Steve.
Lot of friction on the rails can be a goal.
But some slip can also be a lot of fun - for instance when driving a steam
engine : to see the wheels and rods alive while the train is gaining speed
only slowly makes the whole experience more realistic. Yes, the real stuffs have
also some friction issue :-)
Didier
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Matt Hamann wrote:
> In lugnet.trains, Wayne Jackson wrote:
> > I am curious to know if anyone has attempted to use the technic motors
> > and gears to build their own train motor.
>
> Brickshelf user "swoofty" built one
> <http://www.brickshelf.com/cgi-bin/gallery.cgi?f=301135 not too long ago.>
I saw that one during a random scrounge through Brickshelf, but I
thought it was a mock-up, but now I see it is a scratch built motor.
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Jean-Marc Nimal wrote:
> In lugnet.trains, Wayne Jackson wrote:
> > I am curious to know if anyone has attempted to use the technic motors
> > and gears to build their own train motor.
>
> I did one too, to show at a BeLUG event last november, but never got around to
> do decent pictures or post them here. The train isn't as nice as Swoofty's, but
> the principle for driving the wheels appears to be the same:
>
> <<http://www.meltingbricks.net/pictures/galleries/power_function_7740/slides/IMG_3597.JPG>>
>
> Which is pretty straightforward. Doing a nice train around it is, to me, more
> difficult, so I just redid it the 7740 way, which is my idea of a train.
That is exactly what I was/am looking at. Using the current line of PF
modules to power a train.
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In lugnet.trains, Jean-Marc Nimal wrote:
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In lugnet.trains, Ondrew Hartigan wrote:
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anyone care to chime in on how this setup does with pulling power?
ondrew
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Well, bear in mind Im no train expert myself - and that this setup was
thrown together a bit hastily; in particular, one gear train was too loose
and would do an horrible noise when tortured.
That said, I used it to pull a few of Ludo Soetes Belgian railcars, which
are quite heavy, and it seemd to bear the load without trouble. It probably
wouldnt take more than 10 regular cars, but I honestly dont know.
Another issue is the friction on the rails - the standard bands provided with
the RC wheels arent too good. I tried some alternates in Brasschaat that
someone else had made, but it wasnt better. Didier Enjary was kind enough
since then to point me to a standard LEGO rubber belt
(x71) which works like a charm, but I
didnt try it in real conditions.
Id happily do more tests, but thatll have to wait as Im busy for the
moment. Ill probably take that model, or a better one, to FanaBriques in
Rosheim and see what kind of speed I can get from such a setup.
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What Id like to know about this set-up is how it copes with going over points.
Ive taken track power up into a mechanism through the pivot-point of a bogey,
but I havent powered a truck down through the pivot point like this.
I can see that that would put some torque on the bogey, causing it to favour
turning to one side. This could cause trouble going over points (switches)
since these operate primarily by guiding only one side of the wheelset.
Jason R
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David Koudys wrote:
> In lugnet.trains, Wayne Jackson wrote:
> > I am curious to know if anyone has attempted to use the technic motors
> > and gears to build their own train motor.
>
> I tried using pneumatics to make my train motor--
>
> http://sandysparky.net/gallery/20061026_pneumatic_train_1
>
> http://www.youtube.com/watch?v=Y1gQWdWjTmc
>
> :)
>
> Eh, it was a valiant effort!
>
> Dave K
That is pretty good. I noticed that someone pasted a comment on using
more cylinders. I was thinking perhaps emulating a bag-pipe might help
keep the air pressure up.
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