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       The Unofficial Mamod and Other Steam Forum Forum Index -> Locomotives and Railways
scobby12

2 1/2" gauge live steam locomotive build Now 4 boiler

this is a loco im building will post pics during the build





more pics later
please comment  
Sandman

Interesting.

I'll be following this.
dampfmaschinenjoe 1967

Another one with a 2 1/2 " Loco !   Nice project ! I will watch it !

cheers Joe  
John Richards

Re: 2 1/2" gauge loco build

scobby12 wrote:
this is a loco im building will post pics during the build
[url=http://gallery.myff.org/gallery/680081/plan.jpg][img]

more pics later


Good Morning Scobby,

First up, Happy New Year!.

Now, in case your interested I have a "Sprung Trailing Truck"
including Wheels and Axle, plus two Drive Axles fitted with
Cranks for Pump Drive if your interested, from a dead Project
that will never happen!.

I would like $50.00 Au` Postage is Yours for the lot, If your interested give me a P.M. for some Photo`s of them. I`ll watch your Project along
the way!.

Best Regards,

John
scobby12

2 1/2" gauge loco build

now this engine is a bit odd for its size but i wanted to keep it simple so its got osolating engines double acting with a boiler at 50 psi i should think it will have enough power to pull itself around  here is some pics of the cylinders so far next i will be cuttting some steel for the wheels and turn them. Then make the axle. And get some bronze for the bearings

Graham-Jilly

great project
dampfmaschinenjoe 1967

Very interesting ! I think the frame looks very sturdy ! In case of building the other parts like the frames youŽll need big bore/stroke cylinders to move her ! I like that project and the things to come ! Happy new year with a happy new loco !  

cheers Joe
scobby12

2 1/2" gauge loco build

the cylinders have 3/4" bore and a 1" stroke I should think that will be enough what do you think?
Rob

Re: 2 1/2" gauge loco build

have a look at this link

http://www.sidestreet.info/locos/loco114.html

scobby12 wrote:
the cylinders have 3/4" bore and a 1" stroke I should think that will be enough what do you think?


i would go bigger than that, my edrig has 1/2" x 3/4" cylinders and that is 32mm

i have the book for the project loco which is a single cylinder gauge 1 loco (45mm track, standard gauge scale loco's) , and its cylinder is 3/4" x 1 7/16"
Rob

also another 2 1/2" loco, from station road steam

http://www.stationroadsteam.com/stock%20pages/3986/index.htm
scobby12

2 1/2" gauge loco build

might have to do a bit more studie i think i might leave it i think it will be ok the first pic  of the drawing thats to size might see    
scobby12

2 1/2" gauge live steam locomotive build

here are the wheels i am yet to machine them i will do that tomorrow

scobby12

2 1/2" gauge live steam locomotive build

the wheels are machined and done

Thank god for that!
Rob

coming on nicely
scobby12

2 1/2" gauge live steam locomotive build

made bronzes bushs and the axles next to press fit the wheels


SlideValve

Looks great so far! I am not really familiar with loco's, but i think 2 3/4 in double acting cylinders at 50 PSI will be fine for pushing along a 2 1/2 gauge  

Connor
scalex

looking good Reece    
scobby12

2 1/2" gauge live steam locomotive build

yea getting there hope to have some of wheels pressed on tommrowdont know yet
scobby12

2 1/2" gauge live steam locomotive build

i have made the crank pins on wheels and press fit them on iv got a 3ba thread on the end of each pin with a nut to hold every thing in


scobby12

2 1/2" gauge live steam locomotive build

here is some more pics these are the face plates the two with the 5 holes in it will be soldered onto the frame  and the two with one hole will have the cylinders on soldered on them

Les

Looking good so far.
scobby12

2 1/2" gauge live steam locomotive build

here is all the parts for the chassis i have made so far more pic of the chassis  later
scalex

thats coming along well it wont be long and it will be up and running
scobby12

2 1/2" gauge live steam locomotive build

have soldered face plate now it's time for a clean up



please comment
scobby12

2 1/2" gauge live steam locomotive build

here is the locomotive chassis just before panting

and the axle bush bearings are soldered in. So after it is painted i can press fit the wheels on then i can make the con rods then the piston and piston conrod do a little bit of plumbing and we have a working chassis

will update soon

Reece


SlideValve

Because of the angle of the first picture it looks like a very tiny lathe is on the chassis   Anyway, looks great!  
scobby12

2 1/2" gauge live steam locomotive build

haha yea it does    
newsteamer123

great progress
coming along very nice
steam4ian

G'day Reece

Thanks for the photos. I have little loco in progress and you idea of siver soldering the face plates to the frames is good. I was going to bolt mine but SSing would be better in the long run.

My model is a gauge 1 Coffee Pot. (Look up Pichi Richio Railway.) The project has stalled because I have a 5" Gauge loco which as of last weekend needs significant boiler repairs or a new boiler.  

Regards
Ian
bessytractor

I'm hoping to get an On30 Coffee Pot from Ixion Models in Oz when they bring it out, I have no idea how to justify running it on an American logging line  

This project is really good, enjoying reading it!
dampfmaschinenjoe 1967

DidnŽt RISHON Loco Works a live steaam version of the "Coffepot" ???

cheers Joe
bessytractor

http://www.sidestreetbannerworks.com/locos/loco113.html
dampfmaschinenjoe 1967

Thanks for the answer, bessytractor !

cheers Joe
scobby12

2 1/2" gauge live steam locomotive build

here are the buffers need to got the primmer on then will paint black these buffers will have spings in them. just the like the full size brittish locomotives

PCLR

keep then bare metal and poish them
scobby12

loco

here are the buffer beams on the loco

PCLR would love to keep polish but i like to paint them black and the buffer beam red

but i will be making a brass dome and a brass crown to go on top
of the chimmey and will not be painting them

need some thing to polish    

Les

I would paint them white, they will stand out better then.
scobby12

loco

well the draw bar will be red  and the buffers black like this
PCLR

most of that colour is the grease on the buffer to stop buffer lock
scobby12

loco

owell i will still have it black i think it looks good
Roly Williams

PCLR wrote:
most of that colour is the grease on the buffer to stop buffer lock

In the real world, buffers are rarely painted any colour, because no paint would survive the first use. They usually leave the workshop as naked steel. In practice, the colour is usually a mixture of grease, rust and general grime; unless, of course, somebody has gone out of their way to polish them (sometimes done on ceremonial occasions).
PCLR

some lacker them after polishing or chrome them
Keith S

The guy wants to paint them black. They're his buffers.
Rob

most of the loco'se at the great central are painted black, but some of the more famous loco's such as oliver cromwell and sir lamiel have bare steel finish but have to be oiled to prevent rust

you will get a big blob of black grease from rolling stock so doesnt matter what finish they have
scobby12

loco

if these buffers were made of steel i proberbly would not have painted then but because is bronze and steel it would look odd besides buffers will nut be used it is just a detail so the paint will not be touch. At are club we just use steel flat bar for the coupling rods so all good
scobby12

loco

the painting is done

PCLR

very nice is the paint pink or just the photo
scobby12

loco

it the photo the paint is a nice dark red paint looks great
bessytractor

all my big locos buffers are the same colour, dirt and more dirt, shows the engines being used  

looking good, have you decided what boiler your using yet?
scobby12

loco

yes im yet to design it but the idear is to have 5 or 6 fire tubes 3/8" dia in a 2" dia boiler which will be coal fired posabily superheated when i draw it up i will post it here
Reece
scobby12

loco

here is how i am going to set the wheels at 90 degress. The brass is to set the 1st wheel at 180 degress. And the 2nd wheel having a pin coming out the center with the end turned down to the same dia as the crank pin then with the bit of tin on a right angle you put the flat bit of tin anganst the two pin and dead flat steel sheet and that sets them 90 degress a part.

if that makes any sense  


scobby12

loco

rolling chassis yay all going well BUT... is is under gauge it will go on two and a half inch track but it derails so lucky there is another guage 2 1/4" 570meters of it so all good


Tobias

love it
PCLR

very nice what fuel will it be fired on
Les

PCLR wrote:
very nice what fuel will it be fired on


scobby12 wrote:
yes im yet to design it but the idear is to have 5 or 6 fire tubes 3/8" dia in a 2" dia boiler which will be coal fired posabily superheated when i draw it up i will post it here
Reece


It's quite easy to miss posts.



18400
PCLR

[quote="Les"]
PCLR wrote:
very nice what fuel will it be fired on


scobby12 wrote:
yes im yet to design it but the idear is to have 5 or 6 fire tubes 3/8" dia in a 2" dia boiler which will be coal fired posabily superheated when i draw it up i will post it here
Reece


It's quite easy to miss posts.



Thanks  
kno3

Nice work! It's so interesting to watch your loco take shape.
27ace27

the engine block is awfully close to the wheels, or at least to my untrained eye...
scobby12

yes it is but not close enough for it not to work  
scobby12

loco

the clyinders are on just starting to make the conneting rod heres a pic to show the size

Graham-Jilly

how did I miss this thread
great work there
scobby12

loco

here are the coupling rod will have finshed today
PCLR

very nice
scobby12

loco

coupling rods are done yay!!!!!!!!!!!!!!

SlideValve

Nothing more satisfying than building your own engine and parts   Looks great
PCLR

looking good
kno3

Why is the coupling rod articulated in the middle?
bessytractor

if it wasn't on a full size loco then the locos suspension wouldnt work!  Its referred to as a knuckle joint.

Its not really necessary here because the wheels run in fixed bushes and therefore don't require articulated rods as they can't actually move vertically, but hey ho it still looks good!
scobby12

Quote:
if it wasn't on a full size loco then the locos suspension wouldnt work!  Its referred to as a knuckle joint.

Its not really necessary here because the wheels run in fixed bushes and therefore don't require articulated rods as they can't actually move vertically, but hey ho it still looks good!


yes you are right i was going to make it one rod but because the wheels can move up and down i thought id play it safe    
bessytractor

scobby12 wrote:
Quote:
if it wasn't on a full size loco then the locos suspension wouldnt work!  Its referred to as a knuckle joint.

Its not really necessary here because the wheels run in fixed bushes and therefore don't require articulated rods as they can't actually move vertically, but hey ho it still looks good!


yes you are right i was going to make it one rod but because the wheels can move up and down i thought id play it safe    


sensible chap!  

I'm really enjoying this thread.  This is industrial strength loco building!
scobby12

made the pistons but cannot seem to get pics on
scobby12



there we are  
dampfmaschinenjoe 1967

That looks fine!  I think in the near future we can see a chassis  running on air !

cheers Joe
scobby12

in a couple of weeks theres not much to do to get to that stage now  
scobby12

pistion and con rods are now complete



scobby12

loco

the cylinders are done will do the pipe work get it going an d post a vid    

Tobias

good work scobby  
PCLR

that going to be powerful i wonder what chuff is going to be like  (a big one)
great work mate!!!
Keith S

Hey, that's damn good work there. I was wondering how this was going to turn out, now I can see that this is going to turn out very well indeed. I'm excited to see the next step. I'm particularly impressed with the articulated side rods. I wouldn't have thought of that.
kno3

Cool. But how do you remove the pistons from the cylinders for service?
bessytractor

I'm guessing that, much like a mamod loco, you don't!
scobby12

haha yea you can take the end cap off just heat it i could not put bolt on there is not engoh room so i just soldered it
scobby12

loco

hi all decided to get started on the boiler just cut the barrel out marked hole for claks steam dome ect... i need to get some hardwood so i can make formers and we are away!

scalex

looking good Reece    
scobby12

loco

hi all its been a while done very little due to school but i have done some work iv made the throat plate ,back head and smoke box tube plate oh and the barrel so here is some pics...


can only seen two get one pic up will try later.
scobby12

just an update got all parts of the boiler made but need to make a new smoke box tube plate then solder together

i have the chassis working on air but can not seem to be able to get vids or pic on here so once that is sorted will post pic.
Keith S

Excellent, I was wondering what the status of this project was. I can't wait to see the pictures and video.
steam4ian

G'day Scobby

I must say your project is quite audacious.

One thing. I trust you are silver soldering the boiler and not using soft solder.

Have you looked at the AMBSC Code Part 3 for subminiature boilers? Will yours comply?

Next thing is that somebody will come up with a loco like that for 5" gauge or even 7-1/4". Very tempting, if only to see the look on the faces of the officionados.

Regards
Ian
scobby12

hi Ian yes i have been show are local boiler inspector the boiler though its stages i would never use soft solder only sliver i have to get the boiler certified so i can use it at the club track  


Reece
scobby12

right i downloaded the vid on YouTube



http://www.youtube.com/watch?v=KbxN8KmnRIk
Keith S

This is turning out to be one of those epic, satisfying threads, like BK's "big jim". That chassis runs smoothly; a little breaking in and you'll have a nice runner there. I've never seen a coal-burner with wobbly cylinders before, but I think it's great! This is steam heroism on a "Big Jim" level! Well done!
scobby12

thanks  alot Keith S

i just hope that the will be enough draft as air does escape from the face plates we will just have to wait and see
bessytractor

steam4ian wrote:

Next thing is that somebody will come up with a loco like that for 5" gauge or even 7-1/4". Very tempting, if only to see the look on the faces of the officionados.



*cough*

http://www.stationroadsteam.co.uk/stock%20pages/3130/index.htm
scobby12

hi can somebody help i can not seem to get any more pics on this thread
scobby12

Re: 2 1/2" gauge live steam locomotive build Now Boiler

right i have not been able to get pics on this thread so thinking about starting another one

any way i have been not doing much on the loco but i found some time to start brazing so i have so far soldered the inner firebox and the tubes i'm going to start making bushes soon so i can drill were they are going to go then i can solder the rest of the boiler together.
scobby12

can finally get pic on so here were are


scobby12



scalex

looking good Reece      
Dr. Rog

That is a disconcerting lot of pipes.
Tobias

any progress?
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