A Girder to Far #2

 Continuing the bridge project along, it became apparent I had mucked up a step or two. Although the curves where nice its not ideal for this setup. The new pier was cemented into a 2ft hole unlike the old pier which was able to be pulled out after a bit of effort. The top deck is has been removed eliminating that issue.

3d Printed Pier still warm from the printer, a lick of paint and test fit. Still need to concrete in a pad for it to sit on and more weathering. Very close to finishing the bulk of the printing for this project, The material being 2.7kg of UV resistant ABS Plastic (Acrylonitrile Butadiene Styrene is a very tough, very durable plastic used in a wide variety of manufacturing) & more than a few bottles of rustoleum spray paint. The parts screwed into the wood frame.

Old and new Piers

3d printed Pier test fitting

Much better alignment

1:24 El crane

First Pier Wrapped up

A much straighter run 

Breakdown Crane

It runs!

 The 1:24 EL crane is spotted in the wild, looks like big job dismantling the remains of the dam after last weeks storm overwhelmed and caused it to give way. I was going to be prototypical and just rent a road crane but due to location had no choice and use the EL rail crane. 

A quick video of it running and some pictures of the crane in various positions.

Showing the newly rebuilt clay dam with 3d printed water wheel spinning away doing nothing useful yet. I'd say I could power a few LED's that would illuminate the surrounding area or maybe mechanically transfer via axle and chain to a model of an old oil pump etc.

 

1:24 60 Ton Breakdown Crane EL class

1:24 60 Ton Breakdown Crane EL class. 

http://www.nzrcranes.org/

http://www.nzrcranes.org/

On suggestion from Grant M, I sourced motors from a website called www.banggood.com, or more specifically http://www.banggood.com/Wholesale-Motor-c-3792.html

For the extending jib, im using a T8 300mm Stainless Steel Lead Screw Set with Shaft Coupling and Mounted Ball Bearing 

And a range of DC12V 100,150 & 300RPM motors roughly $6 each.

1:24 3D Printed 60 Ton Breakdown Crane EL class

Printer - UP PLUS 2
Quality - Fast
Internal honeycomb structure - second smallest size

1a 126.0g 06hr 11min Res0.2
1b 120.0g 05hr 20min Res0.2
1c 106.9g 04hr 35min Res0.2
1d 060.5g 02hr 34min Res0.2

2a 087.2g 03hr 39min Res0.2
2b 065.8g 02hr 56min Res0.2
2c 109.9g 04hr 34min Res0.2
2d 071.6g 03hr 13min Res0.2
2e 102.7g 04hr 18min Res0.2
2f 000.0g 00hr 00min Res0.2
2g 022.7g 01hr 15min Res0.2

3a 029.3g 01hr 20min Res0.2
3b 048.3g 02hr 08min Res0.2
3c 051.1g 02hr 16min Res0.2
3d 046.7g 02hr 07min Res0.2

4a 012.2g 00hr 51min Res0.2
4b 025.5g 01hr 18min Res0.2
4c 024.7g 01hr 16min Res0.2
4d 023.9g 01hr 03min Res0.2

Total Print Time 56hr 54min
Material Cost 729.8g (less 2 bogies & 2 weight bogies)

1:24 EL crane thus far, completion of the weight bogies & their connection bits overnight. Painted & attached. Nzr couplers & bachmann wheels added.

1:24 El Crane sporting a new jib, Weight truck slowly receives detailing. 

Note the access panels removed on top of the jib.

1:24 El Crane After more work.

After printing a Hook, pulleys & a simple gearbox for manual operation until the motors arrive.

'

Playing around with a spreader bar.

Even Ms Daisy having a look.

Dbr gets a rear lift.

Really need another crane to pull this off

NZ120 EL Crane arrives

NZ120 EL test print arrives

After the usual cleaning up process I primed all the parts separately. The outriggers required a bit of sanding as did the extending jib & lifting ram. Rubbing chalks/powders on these parts to colour will help keep the parts moving.

To connect the end bogies I used very fine brass wire, didn't need to even drill out the holes. I bent the wire off at both ends and it seems to work well.

The main hook is next, also adding a few more details to the body & chassis.

Individual parts primed.

Travelling mode.

Lifting mode

New Designs, NZ120 EL 60 Ton Breakdown Crane & NZ120 Dh Class

2 Weeks later & new designs emerge from the cooker. The first being the EL 60 Ton Breakdown Crane, as inspired by the recent Steam Crane project.

The crane will need to be assembled and additional parts sourced. For instance this crane will need 10 wheels! Or 8 if you cheat & leave the center wheel out on the 2 x 6 wheel trucks. The coupling clips for the relieving bogies are included but 2 couplers will be needed too.

The main hook will be available separately, so brass will be the preferred material.

A test print was ordered, but had to be done in 4 separate files..

Note that the outriggers are extended (Red), The coupling clips (black) & two relieving bogies at either end (grey)

Travelling mode.

All the pieces involved.

To make the counter weights travel stiff wire will need to be installed (red)

The prototype, Visit nzrcranes.org for more!

The second design is the NZ120 Dh class,

Designed on the DH as it originally came in service. Bogie side frames are intended.

Update, I've decided to make a portion of the reference material available, to hopefully give more background to the EL crane. The photos were excellent reference material!