Contractor's Thrashing set

trammayo

Interested in vintage commercial vehicle, trams, t
Country flag
Last year I acquired a cheapo plastic traction engine (1/24 scale) from ebay. For a plastic toy, the £5 was a bit dear but, for as a starter for a project the price was right.

Threshing Set.JPG

I had it posted to my son`s address so I didn`t get hold of it until long after it was delivered - so I couldn`t really complain about the missing chimney!

Having it in my hands, I could see it had possibilities when I could find time to do something with it.

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It had moulded-in detailing which I might be able to enhance, plus I could add things - like the steering chains etc.

The most glaring discrepancies - to me - were the flywheel alignment (directly over the back wheel which would foul a drive belt) and the `humpbacked` canopy!

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Anyway, yesterday was the time. Inbetween resting (from cutting the grass/moss - daren`t call it a lawn) and other domestiicity, I stripped it down and began pruning the plastic.

The boiler splits in half horizontally and and is held together by lugs and the front smokebox door. This then allowed me to remove a chunk of plastic to allow the flywheel to be moved inboard by about 8mm. On the opposite side, a moulded-in lever obstructed my plans to fit a train of gears so that was hacked away.

I then looked at the rear wheels. On the `drive` side, I removed a portion of the wheel`s boss to all ow the gear wheel to sit in line (with the rest of the gears. Next I thought about clutch and brake drums. These were cut from uPVC fascia board with a hole saw. Next the holes were drilled out to 9.5mm which allowed a tight push fit over the wheel bosses.

I then reassembled the wheels and axle, including the final drive gear. Next, I drilled a hole in line with the drive shaft and shoved in a piece of 2.5mm steel rod to receive the gear pinnion.

Satisfied that it looked OK, I pushed the axle in place and was able to mesh in the intermediate gear and mark where I needed to drill. The shaft was made long enough to push right through to the other side. This imparted some extra strength to compensate for all the plastic that had been removed!

I also removed another moulding which was forward of (what would be) the motion guard plate. I still have some filling to do there. Next I drilled a couple of holes in the cylinders and the plate and shoved some more 2mm steel rod in to represent the piston rods.

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I have temporaly reassembled everything - apart from the canopy - but today it will taken apart, filled where required, and given a coat of plastic primer and an undercoat.

As for the canopy, it was obviously produced with its multiplicity of compound curves as it refused to straighten out with the applied heat of the blowlamp. But, waste not want not, I went out after tea and savagely attacked the edges with a hacksaw. Both sides now have a series of apparently indiscriminate cuts and the canopy has been straightened (I hope permanently). The edges were reinforced with wood strips behind them. I have used ABS glue and loads of mini clamps so I`ll know this morning if it has worked!

to be continued ....



 
Great start, Mick.
I think £5 was worth it for the wheels alone - the boiler etc is an added bonus.
I hope the primer works OK - the plastic looks a bit oily - or is that just the photos?

Rik
 
Interesting start.... I'll follow this thread....Has all sorts of possibilities.....
 
A Good Start! I have seen these traction engines and pondered the possibilities, so I shall also follow your progress with interest.
 
Cool beans, 8)

Never ceased to be amazed at the ingenuity of individuals in circumventing a problem, have a serious admiration for anyone who takes a blow lamp to a plastic model ;)
 
Thanks for your comments all. I`m just trying to add further interest to the trailer layout - I`d love to be able to justify buying one of Summerland`s superb models (perchance to dream?).

Yesterday was a lovely day so my sojourn in the shed was short. I ended up having a go at removing Docks (and their roots) fro the goats paddock - cream crackered I was!

The ABS glue sort of worked. The saw cuts were an eyesore but I was already prepared for that - a couple of coffee stirrers. Cut to size and glued and then pinned right through. At least it`s fairly straight now. I cut off the overscale canopy supports and will use some brass rod to make new ones.

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Another fine day forecast - but I need to get on so will spend a little more "me" time in the shed (I hope) - the rest of the docks can wait!
 
PHWAAAAAR I just knew you would not accept the saw cuts. I know a chap who twisted square brass tube to make stanchions, anneal the tube fill with solder, one end in a small vice the other griped with multigrips and twist and you only need to turn 90 degrees for a fantasic effect...
Smoke? That would be enough to grab attention without creating an entire diversion....
I have been toying with a traction engine to recover broken down trams, see you're inspiring me again.
 
Yes smoke. I had thought of it after putting a new unit in my Big Hauler. Bought a few bits just need to get another 5v unit from Cornwall Model Boats.

So far, the last four hours have been dedicated to visiting the recycling centre and clearing out three or four months worth of stuff from the shed. Def need to get on!
 
Here's a few useful links....with varying degrees of helpfulness

Sort of a series of hints, but if your a thresher numpty like me a good place to start.
http://www.ntet.co.uk/sac/mamod_thresher.pdf

I knew there were some Ransomes plans somewhere. Take a deep breath before you click
http://www.myhobbystore.co.uk/product/17510/ransomes-class-a-thrasher-plan-te21

How's yer stock of coffee stirrers ?
http://www.smokstak.com/forum/showthread.php?t=65263

Inspiration (look at the price ??? )
http://www.steamworkshop.co.uk/portfolio/1-12-marshall-threshing-box/
 
Thanks John and David.

It will be a Ransome's thresher (or something that looks like one) - should be able to glean enough basic details to cobble something up. It's around fifty years since - I was nobbut a lad - when I last had anything to do one. Hard work and very dusty.

Making a little progress with the traction engine but it is more time consuming than I expected it to be ....
 
Dtsteam said:
Here's a few useful links....with varying degrees of helpfulness

I knew there were some Ransomes plans somewhere. Take a deep breath before you click
http://www.myhobbystore.co.uk/product/17510/ransomes-class-a-thrasher-plan-te21

Inspiration (look at the price ??? )
http://www.steamworkshop.co.uk/portfolio/1-12-marshall-threshing-box/

Its only money :o Thank goodness the Marshall's sold! Interesting pics though!
 
Nice to see it being modelled Mick. My grandfather had one on his property near Forbes in the 50s which was still in working order (the threshing machine, he didn't still have a serviceable traction engine although there was one out the back of the machinery shed, whcih made a great adventure toy for small boys). Not sure what brand it was, probably likely to have been a Sunshine or other colonial or US manufacture.

While he usually harvested using a Sunshine header, he would occasionally run the thresher - for barley or oats if I remember right, the wheat was always headed. He used the power take off from a tractor to run it. I'm not sure if it was for that reason or not, but his was certainly not close coupled. I have memories of a long drive belt running it but then I was a rather small boy at the time so 10 feet might have seemed long although my mental image is that it was much more.
 
Yes your'e right, they were never close-coupled. Many tractors had flat pulleys (or could be easily retro-fitted) and the Fergie had one that could be bolted on to the PTO I think.

The one I worked on was drawn and powered by an old International (can't remember what model). The baler was part of the load. When set up, the baler was driven from the thresher.

In the British Isles (at least), wheat straw had little value other than for roof thatching and was often burnt in the fields whereas barley was good for bedding cattle and oat straw was dual-purpose - bedding and food.

And the abiding memory of threshing days was the provision of bate (food and drink) for breaks, lunch and tea.
A small gesture maybe, but one that was appreciated at the time.

Happy days?
 
Well whayever my intentions, I ended up with most of my time occupied elsewhere. But I have managed a little bit.

As nearly all UK engines had chain steering, that was the way to go. I made some brackets (aluminium) from a scrap TV ariel, these were for the chain drum. The drum would have a deep spirals - left and righthand - for the chain to wind on and off. I used some 4mm wood dowel (more "glueable") and tried various ideas to form the spirals. After trying copper and steel wire, I ended up using some flexible wiring. Hopefully, paint heavily applied, will make it look more like spral grooves that a piece of dowel with flex wound round it.

The brackets were drilled to make an interference fit for some brass round headed pins. Shoved in with a pair of pliers and hammered home with a 4oz cross pein, they need nothing else to keep them firmly secured. Once the drum was in place, slices of plastic tube (ex-pump from bottle of hand wash) held it in place and simulated the bearings.

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Next I needed to make the worm and wheel to turn the drum. I had some plastic ones but when offered up, the belly tank and the geometry of the model, made placing them too unrealistic. Have searched my scrap bolts and screws for a parallel coarse thread, I found an 8 gauge brass screw that met my requirements. The screw was cut to length and drilled to accept a 2mm rod.

I had to cut a notch underneath the tank to accept the shaft (which is just located by a right-angled bend straight into the firebox) and then simulate the worm wheel on the end of the drum shaft. This was a piece of tube and a 2mm washered sel-tapper. 

The results can just be made out off-centre (left of barrel).....

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Next I had a a go at the canopy supports using some brass rod - I still need to make some cross stays. Because the holes for the original plastic supports were around 4mm diameter, I had to find a way of mounting the 1.5mm brass. In the end, I used the insulation off a 1mm single wire I had stripped off to get the copper to try and wind around the steering drum (everything as a use). All proved to be a tight fit.

For the front supports I used the 4mm wood dowel - drilled for clearance ((I tried a tight fit but this just split the wood when the brass was pushed in) - and the pieces were shoved nicely down and secured with a brass `rivet` which can be seen in the last pic.

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The most important item that was (always) missing was the chimney! I looked round for metal (to turn down) or plastic. I thought I had found someting ideal - some plastic rollers of about 15mm diameter with a 5mm bore.

I put one in the lathe chuck and got a really nice clean cut. Great I thought (and we all know what Thought did), so I continued to turn the chimney cap and then start on the taper of the stack. Yep, going really well then ...

.... the plastic began to distort and wobble. Turns out (yes, a pun) the rollers were only 5mm bore at the ends and were 10mm bore mainly. Back to the drawing board (another pun) and I searched all over the shed. I eventually found a fine point marker pen that I knew would come in handy one day.

The last pic shows it in position. Like the rest of the project it needs further work but it should fit the bill ...

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So that`s the sum total of a couple of hours I managed from the last 48!

 
Mick,

Really looks the part, coming along nicely, to be applauded for the ingenuity in recycling seemingly junk items and reusing them to good effect, well done that man............ :)
 
A couple of hours spent very productively, Mick. I think I've said before that your skills and creativity never cease to amaze, but I'll say it again - your skills and creativity never cease to amaze me.
 
You are both too kind - some of the stuff I see on this forum makes me wish I really did have some skills.

I spent a great deal of time preparing the car and trailer yesterday (for tomorrow`s outing) but I did manage to get the canopy supports made up. Brass rod, a little hammering and filing, and it was a case of soldering the bits together. I always find it difficult told bits of wire (or rod) together whilst soldering - so I used a small block of wood with the rod positions pencilled on it, laid the brass over them and held down with strips of wood (with bits of steel to add weight) as the wood doesn`t conduct the applied heat away from the job.

Then it was just a case of paring down any overdoses of solder and cleaning up prior to priming.

First pic was an attempt to show the steering worm drive (tried flash this time!) - results are down to my usual standards of photography ::)

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the others show the supports in (temporary) placement .....

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I had thought, if I didn`t manage to complete the thresher (which I haven`t even started yet!), I could always create a temporary scene with this living van I made earlier (about 50 years earlier!) ....

Living Hut.JPG

Of course it needs a repaint and makeover but, alas, I`m no way even near finishing the engine!





 
Actually, I think the van looks great, aged as it is.

Regards,
Peter.
 
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