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Mother Of Invention - 1:35n2
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 Posted: Sun Oct 2nd, 2011 04:37 pm
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W C Greene
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For some time, I have been thinking about yet another locomotive for the Mogollon Railway..not that the railroad actually needs another loco, or maybe I am just loco..Anyway, I have this Russian kit for a "GAZ-AA" WW2 truck which is really a copy of an old American truck, the unbuilt kit was getting a nice dust covering on the shelf. I had this "great idea" about bringing infernal combustification to the railroad, based upon 2 Bachmann On30 Davenport mechanisms which had been part of a forgotten "swap" a few years back. My friend Mopman had given me a couple of old HO diesel body shells which could be the basis for such a monstrosity. These "parts" sat on the crowded workbench and tried to lose themselves for quite some time; I would move them around sometimes and think about a future loco. Then the other day it "hit" me...why not put the Davenport mechs under the GAZ truck and make a real something or other (other is the operative word here). I love critters and unusual locomotives, so both desires came together in what will unfold here. This will not really be a "how to" but maybe a "possible project" for those in other scales with other parts to use.




Here you see the kit box, replete with unknown Russian words, for the 1:35 scale GAZ-AA and the beginnings of this model in front. But wait-there's more!




The two Bachmann On30 Davenport mechanisms, one without a motor (front truck), and the motorized rear truck. Also note that the front truck has been reduced in length (a nasty job involving a reenforced Dremel cutoff wheel), the rear truck will get the same treatment. Why just one truck powered? Well, the new loco (what I will call it) has great traction from just the one powered truck and this loco will be used for "minimal" trains-moving a water car, insulated boxcar, maybe even a crew coach. No need to "fire up" a Shay or other steam loco for just a small train.




So far, here's what she looks like. I just stuck the cab & hood together to get an idea of what will come later, this is just what I wanted! I will power this loco with a single speed r/c board from a $7 toy car and a 3.7 volt Li Poly battery, both items can be hidden under the cab and in the stake body to be added later. Now, why one speed? The battery runs the mechanism very nice & slow and has enough power to drive the loco and a car up the 10% grade on the hi-line without problem. I can imagine that the "real thing" would just run along in first gear anyway. As Hannibal Smith said-"I love it when a plan comes together". There will be more as the project continues, but I had to start somewhere.



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 Posted: Sun Oct 2nd, 2011 10:16 pm
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ddonley
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That has't to be the COOLEST locomotive/critter ever, awesome idea!:thumb::thumb::thumb:



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 Posted: Mon Oct 3rd, 2011 03:16 am
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shayboiler
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Woodie,

Just Awesome, that is going to be (as you put it on chat) one cool rail truck,critter, loco, you literally cover the spectrum with that one.
I can't wait to see this run, what a great idea, :apl: NICE!
 

 

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 Posted: Mon Oct 3rd, 2011 04:01 pm
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Herb Kephart
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Want to really blow some minds?

Figure a way to make the siderods on the front truck go backwards.

Of course, since some have already decided that RC doesn't work, they will find no problem with this.

Herbie--who goes way back with A Fords 



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 Posted: Mon Oct 3rd, 2011 05:38 pm
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W C Greene
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Herbie-interesting!!?? I ain't gonna make the front go backasswards however. Those who believe r/c don't work...well, they are under the layout with a brite boy and soldering iron. Brite boy for track cleaning, soldering iron for sticking into their eye!
Woodrow



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 Posted: Mon Oct 3rd, 2011 07:26 pm
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Huw Griffiths
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Herb Kephart wrote: Want to really blow some minds?

Figure a way to make the siderods on the front truck go backwards.

Somehow, I wasn't expecting to see the Bachmann Davenport mechs used like gear towers - I'm sure someone must have tried it, but it sounds like a load of hassle.

As for the 1:35 GAZ AA (or AAA) kit, I know that some people have also used this one for On30 kitbashes (I should know - I've already posted a link to one such conversion on another site).

I've actually been wondering about something similar myself - the ZelmerOz site includes a 1:48 railmotor drawing , which comes out very similar in size to this kit. Chances are I won't end up building this one - I'm not sure how the "4 wheel bogie + single axle" chassis would handle the sort of curves found on some On30 layouts (and then there's the little matter of a layout ...).

Probably best if I don't think too long about hoods from 2 of these kits, with a passenger car body between them (especially when I don't seem to be finding time for any modelling - never mind "new" projects)!

Certainly though, this kit looks rather interesting - and the model looks very good.

Huw.

Last edited on Mon Oct 3rd, 2011 11:06 pm by Huw Griffiths

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 Posted: Tue Oct 4th, 2011 10:19 pm
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W C Greene
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Here's an underbody view which shows the tiny toy car board. The thing fits right in between the frame members and is held in place by a bit of styrene angle stock. The white wire is the antenna, I plan on putting a "cb" type whip antenna on this later. The wiring is simple and the tiny battery fits under the hood. The hood & cab can be removed to get at the battery. I found that the tractive effort wasn't what I wanted but after an application of Pliobond to the drivers, she is able to haul 2 cars up the 10% grade. Just right.




Still much to do, the truck needs a real wooden stake body instead of the plastic one, cab interior, driver, stuff on running boards, and stuff in the bed to hide the motor. I am still thinking about a 2 tone paint job...



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 Posted: Thu Oct 6th, 2011 06:42 pm
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Traingeekboy
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Well that's cool! Do you always use toy car radios for control? Those have got to be fairly cheap these days.



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 Posted: Thu Oct 6th, 2011 07:58 pm
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W C Greene
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TGB-I only use the little toy car boards for things that only need one speed-critters, railcars, animations..My locomotives are controlled with proportional (not cheap) r/c boards. Check out the radio control threads here, there is about 5 years of information ..much more than I will post here. Who knows, you may get hooked!
Woodie



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 Posted: Sun Oct 9th, 2011 04:29 pm
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W C Greene
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UPDATE-I installed a Losi B0803 r/c board in the loco because I found that a constant speed, even slow speed, is not the best for a switcher. Photos will follow of the finished whatever it is, which is now at work handling switching and 1 and 2 car trains. The plot thickens.......



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