A new diesel draisine/critter is going to be built ...

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mad gerald
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A new diesel draisine/critter is going to be built ...

Postby mad gerald » Sun Dec 21, 2008 1:16 pm

Discovering that my aimed radius will be too tight for the diesel draisine I contructed pulling a wgon without difficulties, I decided to finish the styrene version later on and build a new one instead.

The new one will be much the same like the original version, but approx. 2 cm shorter and probably without "luggage compartment" in front of the driver because in lack of place, so it could be, it will look more like a boxcab!?

I started with the chassis yesterday:

Image

I still intend to use coupling bars - and am no longer afraid to use even some longer coupling bar (like Simon Moore suggested) than a usual one ...

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mad gerald
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Postby mad gerald » Thu Jan 01, 2009 9:18 pm

Moin everybody,

(moin is a typical north german greeting, used every time of the day, but with different meanings, i.e. "good morning" in the morning, "good evening" in the evening, just "hello" during the day. The origin of "moin" is a shortened form of "morning").

I have been working on the short version of my diesel draisine/critter again:

Therefore I used the circuit board of the Bachmann Street Car for head and backlight, glued it to the ground plate (right term?) and glued also some strips of styrene on the left and right to reach the same level.

Image

Then I did draw the left and right part of the frame with the lower part/edge towards each other and drilled some holes to form the "round" sections of the frame part and did - at last - cut it right in the middle to get 2 equal parts of frame sides

Image

Image

The little holes will be filled with rivets. I'm now working on the axle bearings (please, what is the correct term?), front and back side will follow soon.

In case you are interested - and you don't mind reading some german language, I write about the construction in the BBF, where some more pictures are available, because my website still ain't ready:

http://www.buntbahn.de/modellbau/viewtopic.php?t=8175

There can also be seen a picture of that laser cut acryl model kit (coming soon!) based upon the diesel draisine develloped by me, adapted by Michael Saettler of the Lasergang. ...

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mad gerald
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Postby mad gerald » Sun Jan 04, 2009 8:18 pm

Moin,

today I finished the short version of the chassis ...

Image

... and gave some dirty greyish colour to it:

Image

This is, how the long and short version look, being compared:

Image

In the background you can see my wagon for the transport of small amounts of agricultural products.

And stupid me: Of course I CAN run the long version on my tight radius (and finish it) - without wagons being coupled. But what kind of construction should I put on the short chassis then?

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mad gerald
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Postby mad gerald » Sat Jan 10, 2009 12:39 pm

Hi to all,

I'm still in doubt what kind of construction to put on the shortened chassis ... so I pulled out my old card board draisine (prototype) and a very very raw/simple prototype (card board) of my mack switcher adaption and placed it on the short chassis to check size and proportion ...

Image

... but I'm not quite sure if it looks a little bit whymsical?!?!

As suggested I intend to build some taller construction, because my wagon(s) (in the background) seems to be fairly high - but "tramway/boxcab" look like my draisine or "cab-and-hood" look? Any further suggestions?

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Postby Oztrainz » Sat Jan 10, 2009 10:52 pm

Hi Gerald,
I wouldn't be too worried about the high cab,
This one is on 2' gauge - 8 ton Simplex with cab attached to the rear ballast weight. Cab was added at the mill to keep the tropical rain off the crew.
http://www.ilrms.com.au/simplex.htm
It is a "stand up to drive" as there is no room in the "cab" for a seat.
Yes there really is a prototype for everything :D
John Garaty
Murphy was an optimist

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Postby mad gerald » Mon Jan 12, 2009 8:32 pm

Ray,

the guys are PREISER ones, the company has a webshop:

http://www.preiser-figuren.de/group,E85 ... alung.html

They are availbale at several online shops and/or specialised dealers too, but hard to get (means: out of stock most of the time). There are two versions available: coloured first class - or simple (mine are "the simple minds" :P )

And there are several characters too, some of them are modified to match the american style of railroad folks ...

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Postby Gerry Bullock » Mon Jan 19, 2009 2:59 pm

Hi Gerald,
Returning to cab heights - yours at 85mm is just within the loading gauge for a 15" railway. As far as standing drivers are concerned very few known in UK with Diesel power and usually with no cab. Most diesels will have need of a clutch pedal and that is much easier to operate when seated.
Both Hunslet and Bagueley had a standing driver Loco (around WWI) though they tended to brace themselves against the top of the Backpanel. Take-off was similar to that seen from Car Learner Drivers, sudden and if Driver not braced strong chance that he parted company with machine. :lol: :lol:
So little time, so many ideas!!!!! GerryB.
http://gn15gnutt.blogspot.com/

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Postby mad gerald » Mon Jan 19, 2009 8:48 pm

Hi Gerry

thank you very much for this relevant information:

Gerry Bullock wrote:Hi Gerald,
Most diesels will have need of a clutch pedal and that is much easier to operate when seated.


I should have known that there is another catch to it, apart the cab construction itself and the shape of the windows! :cry:

So I probably have to think it over again (oh, that terrible feeling of deja vu :P ): Cutting down the cab and/or change the way of drive from diesel to storage battery. :!: :?:

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Postby mad gerald » Wed Jan 28, 2009 8:12 pm

Moin all,

because I am not able to work on styrene at the moment, I made some progress typing my website - and I did some simple card board job for a proportion check:

Image

The platform in front of the cab can be used for transportation (i. e. a toolbox, boxes).

I found out, that a diesel critter also can be driven standing upright - without being hazardous for health and engine :P

BTW: I recognized, that my former aim was to build a layout similar to an estate railway or at least to show some rural scene with a kind of "Feldbahn", but it seems I'm drifting away to an industrial scene ... (>> input overdose ... :P )

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mad gerald
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Postby mad gerald » Thu Jan 29, 2009 9:22 pm

... and now for something completely different: a Gn15 boxcab ...

Image

Made another card board mock up using again MS PowerPoint® for drawing, but I think, the chassis is not big enough for a boxcab - it seems more whimsical than I expected ... :?

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Postby mad gerald » Tue Feb 03, 2009 9:17 pm

Hi all,

I built several card board mock ups to check out, what kind of construction I would like to mount on my chassis ...

Image

... and finally I created another one:

Image

Now it is a mixture between a DIEMA GT 10/2 (the driving unit) and a supersized SIMPLEX on a MACK chassis ... with a cab - Should I call it "draisine", "critter", "locotracteur"? ... I don't know ...

Image

I guess I have to check the proportions again, but finally I think I will choose/build this type, I had another thought for an "open air" version - with a roof of corrugated iron.

It's purpose wil be, as a heavy duty loco, to push or pull some wagons on an industrial layout.

BTW: The other versions are only "out of sight" - not out of mind! :lol: :lol: :lol:

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Postby Oztrainz » Wed Feb 04, 2009 9:21 am

Hi Gerald,
If you swap the engine compartment for a battery box on the front deck you could wind up with something as heavy and industrial as this battery-electric:
Image

Some other industrial loco links for you (but not necessarily narrow gauge)
http://industrialrail.5u.com/images/new-york-mining--mfg.jpg
and the top 2 photos on right at
http://industrialrail.5u.com/photo_67.html
John Garaty
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Postby mad gerald » Wed Feb 04, 2009 10:13 am

Oztrainz wrote:... and the top 2 photos on right at
http://industrialrail.5u.com/photo_67.html


Thanks, John!

Your link (2 upper right photos) REALLY matches my thoughts ... too :)

This whole bunch of opportunities drives me mad - that's because i'm with Gn15 ... :lol: :lol: :lol:

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Postby mad gerald » Thu Feb 05, 2009 9:27 pm

Hi all,

I don't want anybody to be annoyed, presenting another card board mock up.

But this time I created a critter, which is unique and mad enough, that I am going to finish in styrene:

Image

Image

Image

A kind of reling on the front part will be added and the appearance is rather "modern" - there is the possibility, to give that critter an "old fashioned" outfit too. The diesel driving unit in the back part can also be swapped for a storage battery ...

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Postby Oztrainz » Thu Feb 05, 2009 9:58 pm

Hi Gerald,
Your loco looks good. 8) Go for it :!:
I'll shut up now and stop distracting you :lol:
John Garaty
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Postby mad gerald » Wed Feb 11, 2009 8:31 pm

... in the meantime I made a little progress, but look at this comparison between UE and my diesel critter ...

Image

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Postby Nick Ellingworth » Wed Feb 11, 2009 8:32 pm

That is quite a major difference. :lol:
*Insert witty signature here*

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mad gerald
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Postby mad gerald » Fri Feb 20, 2009 2:39 pm

Hi all,

I made a little progress:

Image

The front and back part of the chassis is new, because I had to broaden the chassis itself to approx. 53mm. I gave the chassis this dirty greyish colour (which was partly still wet when I took the photograph) and mounted some Ozark L&P couplers. In the background there can be seen the front and back part of the new cab - still on the styrene sheet, because I first have to drill all that tiny holes ...

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Postby mad gerald » Sat Feb 21, 2009 8:31 am

Unfortunately my drill broke so I had to finish the whole thing with that tiny little top of the drill:

Image

Hopefully I get lucky today and find a shop which stocks 1mm drills ...

The big holes where necessary to form the round shapes of the window "corners".

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Postby Dallas_M » Sat Feb 21, 2009 5:21 pm

Wow, Gerald -- If you kept drilling with only that tiny piece of drill bit, you really are .... well .... quite mad! :lol:

In this case, "madness" must mean the same thing as extreme determination. I certainly hope you'll find a replacement drill bit soon ...

The frame modifications look good ...

But I wonder why you're going to so much trouble making Swiss cheese out of styrene ... don't they have real Swiss cheese at the markets there? :lol: :lol: :lol:

Just kidding ... looking forward to more of your new critter!
Cheers,
Dallas

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mad gerald
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Postby mad gerald » Sat Feb 21, 2009 8:31 pm

Dallas_M wrote:Wow, Gerald -- If you kept drilling with only that tiny piece of drill bit, you really are .... well .... quite mad! :lol:

In this case, "madness" must mean the same thing as extreme determination. I certainly hope you'll find a replacement drill bit soon ...


... mad ... quite mad ... I like these words ... 8)

And I GOT lucky and found some new drill bit today ... so I can get on with drilling madness ... :lol:

Dallas_M wrote:But I wonder why you're going to so much trouble making Swiss cheese out of styrene ... don't they have real Swiss cheese at the markets there? :lol: :lol: :lol:


Your comparison is quite good 8) even the swiss locotracteurs like the TM 68 gave me additional inspiration for my frist draisine/critter #1 and especially the new one #13

Here's another photo I took, when I had finished (cut out) the window holes and got my new drill bit (on the left) ... :lol: :lol: :lol:

Image

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Postby mad gerald » Wed Feb 25, 2009 8:36 pm

... and another little progress:

Image

I built a kind of reling in the front. Therefore I drilled two holes in the groundplate and squeezed 2 (square) styrene rods (2 x 2mm) into the holes (almost down to the bottom of the chassis). Then I mounted a styrene sheet to the rods and glued some 1mm square rods on the styrene sheet.

As you might have recognized, the cab will probably look a little bit different than my last sketch ... :P

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Postby Dallas_M » Wed Feb 25, 2009 11:38 pm

Hi Gerald --

Glad to see some progress! I finished adding rivets to my critter and did some prep on the air tank ... no new photos yet ... but it's fun when some progress is made. :D
Cheers,

Dallas



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mad gerald
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Postby mad gerald » Fri Feb 27, 2009 7:15 pm

Dallas_M wrote:... but it's fun when some progress is made. :D


Yes, it is ... even progress means only a couple of rivets ... :P

So the driver of the Little Red Tractor (in Germany he is called "Jan") and his neighbour, the guy with the Big Blue Tractor (in Germany he is called "Herr Junker") came along for a short visit ...

Image

... and had a look ... :shock:

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Postby Dallas_M » Tue Mar 03, 2009 12:38 am

Hi Gerald --

More about 8-wheel (B-B or Bo-Bo) mechanisms, like the one I'm using on my Limit, Pick & Shoehorn RR critter ...

My chassis is a Life-Like Proto-2000 Alco S-1 ... I don't think they're currently in production, but Train World in New York has them listed at $29.99/$39.99 on clearance. Nice, smooth mechanism ... better than the old Athearns. Not sure of the exact minimum radius, but mine will run on 12" radius curves ... and that's probably close to the minimum. If you do a web search for "Proto 2000 Alco S-1" you will find some available.

In that thread, Prof K mentioned some other locos:
-- The old Athearn SW-7 units are a bit hard to find now, but they'll run on 10" radius, maybe less. A bit tricky to convert to DCC if that's an issue.
-- The Bachmann 44-tonner and 70-tonner require roughly 15" minimum radius, but can be modified to run a little tighter ...


The new Bachmann 45-tonner is a compact 8-wheel loco that will run on tight radius. Russ Haigh (a regular on Carl Arendt's site!) has reported that it will run on 7.5" radius. I'm working on an On30 conversion for this mechanism. Once that's worked out, I'm going to "tear in" to the mechanism ... I "think" :idea: :?: that it might be possible to swap the small wheels for larger ones ... since the axles run THROUGH the wheels into the cranks.

Generally, Bachmann uses 2mm diameter axles ... so it's likely that the wheels can be pulled from the axles (or half-axles, I have to look!) ... and larger wheels with the same axle opening can be fit in place ... it will be necessary to check clearance regarding the mounting of truck side frames, pick-up wipers, etc. to make the final determination. BUT ... I'm very interested in this question, so I'll post some notes (eventually). First, I have to finish my On30 project before I "destroy" the sample mechanism! :wink:
Cheers,

Dallas



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Boulder Valley Models

www.bouldervalleymodels.com


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