009 Society Members Forum

Modelling => Rolling stock => Topic started by: danny on May 31, 2013, 22:18

Title: Mine tubs
Post by: danny on May 31, 2013, 22:18
Does anyone know if their are any kits for small 9mm gauge mine tubs? I am making a small mine and am currently using a u-skip. I am thinking of switching to a mine tub because it would be more accurate, but the Roco mine hoppers are too big for my layout, which is a very small drift mine.
Title: Re: Mine tubs
Post by: derrickn on June 10, 2013, 18:45
Try using the mine tubs from the tramway collection from Blackdog mining.Although designed for 09,the small size makes them ideal for 009.I will post a picture as soon as Photobucket come back online.
Title: Re: Mine tubs
Post by: ECMT on June 11, 2013, 07:10
Or the Side Tipping Cement Hopper Wagon - Roco 34601 - may be of use.
http://www.gaugemaster.com/_upload/imgs/lrg/34877/RC34601.jpg
Title: Re: Mine tubs
Post by: derrickn on June 11, 2013, 08:59
Black dog mine tub.

(https://forum.009society.com/proxy.php?request=http%3A%2F%2Fi1079.photobucket.com%2Falbums%2Fw517%2Fderricknoble%2FDSCF1105.jpg&hash=d5cb080907f578787fffb83291be5a4e1c380da5) (http://s1079.photobucket.com/user/derricknoble/media/DSCF1105.jpg.html)
Title: Re: Mine tubs
Post by: derrickn on June 11, 2013, 09:27
Here is a better picture of the Black dog tubs.
(https://forum.009society.com/proxy.php?request=http%3A%2F%2Fi1079.photobucket.com%2Falbums%2Fw517%2Fderricknoble%2FDSCF1029.jpg&hash=ddf262a754649b9624ca9b5201744bcc1edebe2c) (http://s1079.photobucket.com/user/derricknoble/media/DSCF1029.jpg.html)
Title: Re: Mine tubs
Post by: rod335 on June 11, 2013, 10:18
I too would dearly love to see a generic mine tub in 009 but I don't think it will happen. The truth is these things are in reality so small that a 4mm model would not work. If made in resin/plastic it would be too light, if white metal, too thick and clumsy looking and then probably too heavy, the short wheelbase would make them unstable in use, rather like the otherwise excellent PD Hudson skips, inside frames as per the common prototypes would mean a loss of pin point bearings with consequent loss of free running and the physical size of the things would require a rethink of couplings. Whew! That's all pretty negative but I honestly can't see a way round those points.

Rod
Title: Re: Mine tubs
Post by: B.Meldon on June 11, 2013, 12:32
I think Brian Clark (Saltford Models) at one time in the 1980
Title: Re: Mine tubs
Post by: rod335 on June 11, 2013, 14:28
Unfortunately, there is a law of physics which applies here. I don't know the exact figures but in principle, the ratio between the wheelbase (distance between the axles) and track (distance between the wheels on the axle) is critical. When this ratio is less than, say, 1.25 : 1, then the vehicle becomes unstable. If you've ever driven something like a short wheelbase Japanese 4 x 4 you will be familiar with this formula! So, in theory, whilst it would be possible to regauge the Busch tubs, whilst they will happily pull along the track, pushing them will be problematical. If you don't believe this try it with some of the RT rubbish or slab wagons. And at
Title: Re: Mine tubs
Post by: Sven on June 14, 2013, 12:24
There is an "Escher" effect going on with the three tubs on that Busch Picture.  ;D The designer must have been in a hurry.
Title: Re: Mine tubs
Post by: danny on July 31, 2013, 22:12
Quote from: ECMT on June 11, 2013, 07:10
Or the Side Tipping Cement Hopper Wagon - Roco 34601 - may be of use.
http://www.gaugemaster.com/_upload/imgs/lrg/34877/RC34601.jpg

These are what I am currently using. I suspect the Black Dog ones would be too long and high, as I think the Roco hoppers are. Does anyone have rough dimensions for any of these?

(Also forgot to say in original post: the mine has a very tight loading gauge and is accessed by a cable-worked incline. None of this layout is loco-worked, it is really a diorama with movement. Even a Roco/Minitrains v-skip will not fit in as there is an overhanging piece of plaster/rock, but a u-skip will because the profile of the skip is narrower. This is the same reason why they are used in real mines instead of v-skips. The length of wagons is also important as the 'mine' isn't really any longer than the wagon I am using; I have had to remove the coupler loop from one end to make it fit into a shorter space. When the layout is properly finished I will improve the look by making the mine blend into the backscene and so not look like it ends abruptly, but it already takes up the very small base of the layout. I also need to be able to weight the wagons or they don't go down the incline properly; the u-skip I am using is full of lead sheet.)

As for the Busch tubs, they are expensive to mess about with, but there are those Narobahn ones, which are similar but cheaper, and I already have some. Perhaps you could make a 9mm gauge wagon by fixing two Narobahn tubs together side by side. I wouldn't know what to do about the running gear though.
Title: Re: Mine tubs
Post by: Graeme Dunbar on August 01, 2013, 12:53
Is "hacking" one of the RT Models (ex-BAL Models possibly) wagons worth considering?

http://www.rtmodels.co.uk/rt_models_014.htm (http://www.rtmodels.co.uk/rt_models_014.htm)

(https://forum.009society.com/proxy.php?request=http%3A%2F%2Fwww.rtmodels.co.uk%2Frt%2520models%25204mm%2520scale%2C%2520009%2520gauge%2520maenofferen%2520slate%2520rubbish%2520wagon%2520kit.jpg&hash=c8b50be6d3790cc40995c89d6363af3c25ec34aa)

(There are others on the same page that may be more suitable.)

The weight of whitemetal would be of benefit in your application.
Title: Re: Mine tubs
Post by: Krizzy on August 01, 2013, 15:27
Those whitemetal rubbish wagons may be a little heavy. An alternative what about trying the Meridian Penrhyn 'Fullersite' wagons. They are dropside wagons and being light weight plastic could easily be hacked and weathered into hard working mine tubs.

Roger
Title: Re: Mine tubs
Post by: danny on August 01, 2013, 19:09
Quote from: GraemeD on August 01, 2013, 12:53
Is "hacking" one of the RT Models (ex-BAL Models possibly) wagons worth considering?

http://www.rtmodels.co.uk/rt_models_014.htm[/url
(http://www.rtmodels.co.uk/rt_models_014.htm)

Even though the body's not quite right, definitely worth it to get a good inside-framed chassis.

Here are some examples to see what they look like:

http://www.internationalsteam.co.uk/uk/haywooddrift2012.htm

http://www.ingr.co.uk/images/canop01_news.jpg

(They are both in the Forest of Dean as my layout is based on the mines there.)
Title: Re: Mine tubs
Post by: rod335 on August 01, 2013, 20:38
Instead of using the RT Models rubbish wagon without the body, use their 'Generic Slab Wagon' which will give you a whitemetal chassis (weight where you need it) and metal wheels. You can then build a lighter-weight body of your chosen design without having to cut away a cast body.

Rod
Title: Re: Mine tubs
Post by: JulienW on August 02, 2013, 10:30
Might be worth contacting Robert Thompson ('Mr. RT Models" and a Society member afaik) to see if he would supply the chassis on their own...
Title: Re: Mine tubs
Post by: Hedzer on August 03, 2013, 18:28
If you have drawings and or photos of the mine tubs someone can make a printable cad model.
I'm happy to do that for you (it may take some time though, im very buzy at the moment....).

Hedzer
Title: Re: Mine tubs
Post by: tebee on August 04, 2013, 22:08
Here is a drawing I have, not sure how typical it is though.

Been meaning to do it myself, but my list of possible projects is also far too long.

(https://forum.009society.com/proxy.php?request=http%3A%2F%2Ffarm3.staticflickr.com%2F2844%2F8783749992_f83c7132df_o.jpg&hash=67439090852c258f4fcf0a4d3aa3e668d20f2d62) (http://www.flickr.com/photos/28798775@N02/8783749992/)
034-vagonetto-cassa-bilico (http://www.flickr.com/photos/28798775@N02/8783749992/) by tebee (http://www.flickr.com/people/28798775@N02/), on Flickr

Tom
Title: Re: Mine tubs
Post by: Hedzer on August 07, 2013, 20:26
Thats a pretty clear drawing, i can work with that. Some pictures would be nice for some details.
A big BUT, I am typing this message with plaster on my hands, I'm renovating my home...

It may take a month or two, to be continued.

Hedzer
Title: Re: Mine tubs
Post by: gallopingalice on August 25, 2013, 15:05
Danny
There are several Minitrains short wheel base wagons that might provide a suitable chassis for a DIY mine tub. For example the Trash/Log car nos. 5104/3 whose wheel base is about 11.5mm. They have outside frames though.  The 009shop might have some at about
Title: Re: Mine tubs
Post by: danny on August 30, 2013, 18:59
Quote from: gallopingalice on August 25, 2013, 15:05
Danny
There are several Minitrains short wheel base wagons that might provide a suitable chassis for a DIY mine tub. For example the Trash/Log car nos. 5104/3 whose wheel base is about 11.5mm. They have outside frames though.  The 009shop might have some at about
Title: Re: Mine tubs
Post by: gallopingalice on September 01, 2013, 09:15
You could perhaps choose any RTR wagon that took your fancy and reduce its length/wheel base, by removing a slice from the centre and gluing the two bits back together again?
Title: Re: Mine tubs
Post by: Hedzer on October 08, 2013, 15:00
I have had some time to make a quick sketch of the model.

(https://forum.009society.com/proxy.php?request=http%3A%2F%2Fi104.photobucket.com%2Falbums%2Fm165%2Fdurksz%2FScreenHunter_02Oct081550_zpsf95dd7b3.png&hash=7b987d4dd4fdcceba8febde19cd154b7578393eb) (http://s104.photobucket.com/user/durksz/media/ScreenHunter_02Oct081550_zpsf95dd7b3.png.html)

(https://forum.009society.com/proxy.php?request=http%3A%2F%2Fi104.photobucket.com%2Falbums%2Fm165%2Fdurksz%2FScreenHunter_03Oct081550_zpsc48334d8.png&hash=9edf15d275962f50c5afc9022a997612681dd788) (http://s104.photobucket.com/user/durksz/media/ScreenHunter_03Oct081550_zpsc48334d8.png.html)

(https://forum.009society.com/proxy.php?request=http%3A%2F%2Fi104.photobucket.com%2Falbums%2Fm165%2Fdurksz%2FScreenHunter_04Oct081551_zpsb2bd080b.png&hash=31b8010cb779fda20e02e37e79d8bcb28fcef2f5) (http://s104.photobucket.com/user/durksz/media/ScreenHunter_04Oct081551_zpsb2bd080b.png.html)

virtually behind my Deutz omz122:
(https://forum.009society.com/proxy.php?request=http%3A%2F%2Fi104.photobucket.com%2Falbums%2Fm165%2Fdurksz%2FScreenHunter_05Oct081557_zpsb994f4ad.png&hash=cc671c1fedbfee35da5aae3bddeb32c8ff398732) (http://s104.photobucket.com/user/durksz/media/ScreenHunter_05Oct081557_zpsb994f4ad.png.html)

I changed the dimensions a bid, well quite a bit, increasing the size of the mine tub by af factor of 1,5 compared to the origional drawing. if not this would happen:
(https://forum.009society.com/proxy.php?request=http%3A%2F%2Fi104.photobucket.com%2Falbums%2Fm165%2Fdurksz%2FScreenHunter_01Oct081332_zps4c118fd0.png&hash=daf808ef980ba3e55cce8e35c45d05be1caab1fa) (http://s104.photobucket.com/user/durksz/media/ScreenHunter_01Oct081332_zps4c118fd0.png.html)
These are the smallest wheels that i know of (the roco wheels used for its H0e stock).

Please be patient, it wil take a while before this model will be available!!!!! Time is still in short supply :-(.

Hedzer