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HOn30 Electric Boxcabs
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 Posted: Sat Mar 28th, 2015 02:03 am
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Bernd
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Here's a little something I've been working on for my "to be" quarry line. A quartet of electric boxcabs.

Pants Up.



Still need to add handrails, foot boards, and the rest of the Sargent couplers. Then it's off to paint and then add the glazing. Pants are for looks only. These might be battery powered and radio controlled. Time will tell.

Bernd

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 Posted: Sat Mar 28th, 2015 02:19 am
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George W
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Wow, those are very cool. What is the chassis they are built on?
Looking to build some kind of odd engine for my project



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 Posted: Sat Mar 28th, 2015 02:38 am
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Bernd
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And another little project. An HOn30 railtruck.

 

The truck with motor and gearbox.



The rubber band drive.



Developing the trailer chassis.



Completed brass chassis.



The trailer body made from .020" styrene with battens glued on to make it look like individual panels.



Start of the truck box on the tractor frame.



Windows and top added.



Other side.



Utility door added.



Handrails and wire battens added.



Two Li-Po batteries for power.



And this is where they came from. The copter was a free-be.



Here's a video of the truck without trailer running on 1 Li-Po battery. With a fully charged battery the truck ran for a little over 6 hours. The motor is a 6 volt running through a high reduction gearbox.

https://www.youtube.com/watch?v=fl9SpuuhniA


Bernd

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 Posted: Sat Mar 28th, 2015 02:39 am
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Bernd
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George W wrote: Wow, those are very cool. What is the chassis they are built on?
Looking to build some kind of odd engine for my project


They are built on a Kato 11-103 N scale power chassis. Got them off  an E-bay vendor.

Bernd

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 Posted: Sat Mar 28th, 2015 03:42 pm
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Herb Kephart
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Bernd-

Very nice! I have had some experience with rubber band drives, but in O scale, and with as large a drum on the axle as possible, to get reduction, which you didn't need. Do you get enough drive with only the axle shaft diameter as the driven pulley?

And I love box cabs!



especially little ones--



Herb



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 Posted: Sat Mar 28th, 2015 04:39 pm
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Bernd
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Herb Kephart wrote: Bernd-

Very nice! I have had some experience with rubber band drives, but in O scale, and with as large a drum on the axle as possible, to get reduction, which you didn't need. Do you get enough drive with only the axle shaft diameter as the driven pulley?

And I love box cabs!

Herb



The rubber band that you see is just that, a rubber band. It stretched after a while and started slipping. I ordered some drive belts from Nigel Lawton in England. They work much better and don't stretch. Since only the trailer is being pulled on level track the truck has had no problems moving right along.

Thank for the compliment on the boxcabs. I now have to build a multi-truck one for the mainline to haul all those loaded cars. I plan on animating both the loading and emptying of the cars.

The sides and ends  of the boxcabs were cut out using my CNC mill, plus the curved roof line. Plus some of the small parts of the pantograph. They were a pain in the you know what. First ones I ever did. Learned a lot on how they work. Not very consistent on their build. Here's a close up.



The thing that baffled me the most the bar between the two pivot points the keeps everything in it's proper position yet pivots. The was very interesting.

I like the two axle one. Got any plans for that? What kind of chassis is under there?

Bernd

Last edited on Sat Mar 28th, 2015 04:42 pm by Bernd

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 Posted: Sat Mar 28th, 2015 08:49 pm
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Alwin
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Bernd, great box cabs! When I saw the first picture I thought they were at least 0 scale. Damn nice brass work in H0. :bow:

That panto looks great too. I think the cnc makes some parts easier but still a great job :2t:.

Keep it coming.

Alwin

(Ps, the boxcabs of Herb are great too. Show some more of your work Herb. :bg:)

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 Posted: Sat Mar 28th, 2015 10:29 pm
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Bernd
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Alwin wrote: Bernd, great box cabs! When I saw the first picture I thought they were at least 0 scale. Damn nice brass work in H0. :bow:

That panto looks great too. I think the cnc makes some parts easier but still a great job :2t:.

Keep it coming.

Alwin

(Ps, the boxcabs of Herb are great too. Show some more of your work Herb. :bg:)


Thanks Alwin. I won't have been able to do four if it hadn't been for the CNC mill. I'll post a couple of the build later.

Ya, love Herbs boxcabs too.

Bernd

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 Posted: Sat Mar 28th, 2015 11:29 pm
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Herb Kephart
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Sorry for the thread hijack, Bernd

On the boxcabs in my photos the motors are all K&D #1's--remember them?--Two in the double truck job. Only things commercial besides the motors are Bohaon chain and sprockets. bells, couplers, sideframes on the double truckers (have two identical locos) and engineers. I think that the worm and gears are ones that I cut--too long ago to be sure. all else, wheels --all brass bodies and frames-- are from scratch

Little guy is inspired by a couple units that the Hagerstown & Fredrick  (MD) had for switching in one of the terminal towns 2, 3, 4 &5-- but they had poles instead of pans.

Back to Bernd's superb narrow gauge models.--

Herb



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 Posted: Sun Mar 29th, 2015 01:11 am
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Bernd
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Hey you ain't hi jacking anything. it's on subject and I don't mind. The more the merrier.

Here's a bit of history as to how these little guys came to be born.

I'm going to build a limestone quarry. I figured HOn30 would be perfect for a quarry line. Plus I wanted electric engines with panto's. I came across some pictures on the net.



These guys gave me the idea of a four truck electric for the main line to haul the cars from the yard to the standard gauge interchange.



I came up with a design. What could be hard about drawing up a box?



I drew up some plans and converted them to G-code for the CNC mill.



And proceeded to mill them out of .030" thick brass.







In order to get a nice corner finish I mill a 45° angle on the ends





They were then welded (soldered) together with my resistance soldering rig.



The four sides soldered together sitting on the frame.





Now came the little fiddly detail stuff a CNC is great for, the louvers.

First I milled some slots.

 

Then I milled a 45° angle on that.



Soldered the individual pieces on some .010" thick brass and trimmed to fit.





Three with the louvers installed. Did a lot of name calling, throwing of tools and teeth gnashing making these.



The roof was next. I milled out some cross members.



Made some stringers.







Next I needed to figure out how large a piece of brass I'd need for the curved roof. A piece of flattened solder works great. Ted's making some adjustment to the solder.



Once I had the roof piece cut to proper size I needed to give it some form. A piece of copper pipe did the job.



Next it was soldered to the roof frame made earlier.







During this whole process I was looking at new and better CAM software. I finally got it and designed the doors. This program allowed me to mill pockets. Thus the doors.



Next up the pantographs. Small parts is the order of the day.

This is what I wanted. it's a commercial product. I used it as a template.



Next the first small parts.









Some assembly required.





Jig for assembly.



And they multiply like rabbits.



And the quartet is close to finished.



 
I'm hoping to get these finished up before tax day. Foot boards, ladders, hand rails and coupler need to be added yet.

Bernd

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