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Gallery, Projects and General => Gallery => Topic started by: flyingtractors1 on February 04, 2012, 10:56:05 PM

Title: Rail Road Pump Trolley on tracks
Post by: flyingtractors1 on February 04, 2012, 10:56:05 PM

This is a 1/32 scale Rail Road Pump Trolley I've been working on.  Now I'm training the Guinea Pigs to work it.   :lol:  Ralph     (http://i1050.photobucket.com/albums/s405/flyingtractors1/RRTrolleyTrack074.jpg) 

Title: Re: Rail Road Pump Trolley on tracks
Post by: Bernd on February 05, 2012, 08:48:39 AM

Neat.  :thumbup:

You must be into the model railroading hobby?

Me too. I work (play) in the HO, HOn3, On30 & O scales.

Bernd

Title: Re: Rail Road Pump Trolley on tracks
Post by: Stilldrillin on February 05, 2012, 10:32:33 AM

That's really nice!  :thumbup:

David D

Title: Re: Rail Road Pump Trolley on tracks
Post by: wd on February 05, 2012, 12:00:51 PM

Great looking model Ralph wonder if you could offer a snap shot of the under side.Looks mechanistic.

Thanks
wd

Title: Re: Rail Road Pump Trolley on tracks
Post by: Rob.Wilson on February 05, 2012, 12:33:46 PM

Nice one Ralph  :bow: :bow: :bow: :bow:

Rob

Title: Re: Rail Road Pump Trolley on tracks
Post by: flyingtractors1 on February 05, 2012, 02:21:40 PM

? ?   :palm:

Sorry.  Try again.  Ralph

 (http://i1050.photobucket.com/albums/s405/flyingtractors1/Trolletunder027.jpg)

Title: Re: Rail Road Pump Trolley on tracks
Post by: flyingtractors1 on February 05, 2012, 02:50:58 PM

Another view of the platform and mechanism.  I'll try to post an action video soon as I can figure out how.   :loco:  Ralph   (http://i1050.photobucket.com/albums/s405/flyingtractors1/Trolleyplatform003.jpg)

Title: Re: Rail Road Pump Trolley on tracks
Post by: wd on February 06, 2012, 11:36:50 AM

Ralph

I'm a bit confuse how are the axles attach to the frame? Would like to make one myself.Is the model made from a plan?Or was it made off the cuff kinda thing .

Thanks
wd

Title: Re: Rail Road Pump Trolley on tracks
Post by: flyingtractors1 on February 06, 2012, 06:18:04 PM

Hi WD.  Thanks for your inrerest in the trolley.  Sorry, I don't have any plans for this model.  I just built it as I went along using simple tools.  The axle that you see in the picture is a hollow tube soldered onto the rails, and the wheel shaft rides in the tube which was notched to accomodete axle and drive gear. Same with the crank and the other set of wheels.  I'll try to draw up and post a sketch.  It was a fun and simple build.  Ralph

Title: Re: Rail Road Pump Trolley on tracks
Post by: flyingtractors1 on February 06, 2012, 07:54:24 PM

Hi All.  We've got the trolley in motion on a short track. :thumbup:  Ralph   (http://i1050.photobucket.com/albums/s405/flyingtractors1/th_Trolletaction1.jpg) (http://s1050.photobucket.com/albums/s405/flyingtractors1/?action=view&current=Trolletaction1.mp4)

Title: Re: Rail Road Pump Trolley on tracks
Post by: Stilldrillin on February 07, 2012, 02:26:25 AM

That's great Ralph!  :clap: :clap:

Short, (very), but sufficient for the grin factor....... Well done!  :thumbup:

David D

Title: Re: Rail Road Pump Trolley on tracks
Post by: Divided he ad on February 08, 2012, 01:28:25 PM

Blink and you missed it! That thing is fast!!!  :lol: 



Very nice looking model Ralph  :thumbup:


I have just one thought. Not trying to learn all your secwets but.... How does the crank mechanism ratchet?

I'm just guessing it has to pump then freewheel?  Never really thought about it till I saw your model!

I have some small needle roller clutches that would work that way. But they're 1/2" far too large for such a machine.




Ralph.

Title: Re: Rail Road Pump Trolley on tracks
Post by: flyingtractors1 on February 08, 2012, 08:04:43 PM

Thanks.  It really isn't that fast -it's a product of the video host. Just play the "previous" frame then play "next" again and it slows down some.  I'll try to post a more worthy video.  Yes, it pumps half of the cycle then freewheels the other 180degrees.  A racheting mechanism would be ideal, interesting and challenging.  Ralph

Title: Re: Rail Road Pump Trolley on tracks
Post by: DaveH on February 08, 2012, 08:36:30 PM

Great stuff Ralph :clap:

 :D :D :D
 :beer:
DaveH

Title: Re: Rail Road Pump Trolley on tracks
Post by: Bernd on February 09, 2012, 09:51:49 AM

Hey Ralph, it works on the same priciple as the "finger machine" Bog's built, except it (pump trolley - intersting name) has no flywheel.

Here's a video. It's hard work.  :D

Bernd

Title: Re: Rail Road Pump Trolley on tracks
Post by: flyingtractors1 on February 09, 2012, 01:42:53 PM

Thanks Bernd.  Yes, it is the same principle as the "finger machine", but the wheels of the cart serve the purpose of the flywheel and allow it to scoot along as they turn.  Ralph

Title: Re: Rail Road Pump Trolley on tracks
Post by: Divided he ad on February 09, 2012, 05:08:42 PM

Ahh! A crank I see  :thumbup:


I see it a bit slower now Ralph. looks fun with the little guy on there too  :ddb:





Ralph.