Archive for The Unofficial Mamod and Other Steam Forum The Original Unofficial Toy Steam Forum
Established 2006
The biggest, most popular steam forum around! Accept NO imitations!
We have a growing community of regular posting members who chat about all aspects of toy and model steam.
 


       The Unofficial Mamod and Other Steam Forum Forum Index -> Locomotives
Mamodman123

Rosa pressure guage

Right I had an idea to include a pressure guage on Rosa. The mamod ones are 3/4 of an inch diameter so its perfecto for the cab. Here is my original idea for attaching it to the loco. With the safety valve above that.

I think it should work...In theory



Picture courtesy of Jimberino cheers mate!
James

No problemo, Boblemo
SPOKESMAN

HOW DOES the whole lot look, schematically when its all plumbed in ie lubricators, pipes pistons and gauges . . . .
Mamodman123

SPOKESMAN wrote:
HOW DOES the whole lot look, schematically when its all plumbed in ie lubricators, pipes pistons and gauges . . . .


ITs a totally different system Mike

The pressure guage will take the steam from the whistle thread and into the cab. The safety valve will then screw on top of that "chamber" like the picture. The steam pipe, lubricator pipe will remail untouched
SPOKESMAN

Aye, I know that - how does it all look? Draw me a diagram!
James

Mamodman123

Aye Jimbo thats how it'll work and the loco pipework is as follows:

SPOKESMAN

Thats better - but surely the d/lubricator has one pipe in and one pipe out? thence onto the steam chest/speed control?
Mamodman123

SPOKESMAN wrote:
Thats better - but surely the d/lubricator has one pipe in and one pipe out? thence onto the steam chest/speed control?


the pipe goes right through to the top of the lubricator sorry
SPOKESMAN

Mamodman123 wrote:
SPOKESMAN wrote:
Thats better - but surely the d/lubricator has one pipe in and one pipe out? thence onto the steam chest/speed control?


the pipe goes right through to the top of the lubricator sorry


Aye! thought so -
Chris

Watch out spokesman, the will be after your graphics job.

James

Thanks Chris

Mamodman123

Chris wrote:
Watch out spokesman, the will be after your graphics job.





Quality design by Jimbo and MM
James

SPOKESMAN

Im not going to loose any sleep just yet!
James

I can see it now:

Jim and Him drawers Co. LTD
Mamodman123

James wrote:
I can see it now:

Jim and Him drawers Co. LTD


LMAO
bessytractor

sound theory, possibly tricky to put into practice
James

Not too hard
Mamodman123

bessytractor wrote:
sound theory, possibly tricky to put into practice


Should be ok.....Rosa is nut and bolt so I can take the cab off and do it
bessytractor

Mamodman123 wrote:
bessytractor wrote:
sound theory, possibly tricky to put into practice


Should be ok.....Rosa is nut and bolt so I can take the cab off and do it


well there you go then!
Mamodman123

bessytractor wrote:
Mamodman123 wrote:
bessytractor wrote:
sound theory, possibly tricky to put into practice


Should be ok.....Rosa is nut and bolt so I can take the cab off and do it


well there you go then!


Good job I was thinking ahead when i re-built
tmuir

Looks not to hard MM as long as you can get someone to make you the threaded adapter.
SPOKESMAN

WIll be good to see some pics of thsi MM, Im quite interested in how it all fits together!
Mamodman123

SPOKESMAN wrote:
WIll be good to see some pics of thsi MM, Im quite interested in how it all fits together!


The loco or the pressure guage arrangement?
Graham-Jilly

all of the above
SPOKESMAN

Mamodman123 wrote:
SPOKESMAN wrote:
WIll be good to see some pics of thsi MM, Im quite interested in how it all fits together!


The loco or the pressure guage arrangement?


All of it!
Mamodman123

SPOKESMAN wrote:
Mamodman123 wrote:
SPOKESMAN wrote:
WIll be good to see some pics of thsi MM, Im quite interested in how it all fits together!


The loco or the pressure guage arrangement?


All of it!


Well as soon as I've got the parts I can do some pictures
SPOKESMAN

Good, just that I got some ideas how to plumb it all together differently . . .
SillyBilly

Couldn't you ask I.P Engineering to supply a 'T' piece as they make one for the regulator kit?
Chris

PPS also list steam fittings under the accessories menu.

Says they are for 1/8" pipe. A tee is £5.40.
Mamodman123

SillyBilly wrote:
Couldn't you ask I.P Engineering to supply a 'T' piece as they make one for the regulator kit?


Would they sell me it separately?
James

Probs not. Dunno. Let me know before I start getting it made!
Mamodman123

James wrote:
Probs not. Dunno. Let me know before I start getting it made!


Aye lad
James

If they can and it ain't stupid price let me know and I'll buy 2. One for me and I'll buy you one. instead of paying for the other thing to be made.
Mamodman123

James wrote:
If they can and it ain't stupid price let me know and I'll buy 2. One for me and I'll buy you one. instead of paying for the other thing to be made.


Ah yes! isn't it part of the sender thing aswell?
James

Aye boy, old man's on with it. Don't threat lad!
Mamodman123

James wrote:
Aye boy, old man's on with it. Don't threat lad!


Good ol boy that Sturrock!
James

Eee's rate!
Mamodman123

James wrote:
Eee's rate!


I saw him with my very own eyes!
James

You can't miss him
SillyBilly

You'd have to ask the I.P bloke about the fitting.
Mamodman123

SillyBilly wrote:
You'd have to ask the I.P bloke about the fitting.


Maybe...
James

I'll knock you one up lad.
Mamodman123

James wrote:
I'll knock you one up lad.


Whatever is easiest matey!

I would like to avoid I.P if poss!
James

Aye cock I'll try.
Mamodman123

James wrote:
Aye cock I'll try.


Nice one Jim bob
James

Jimbob Bigknob
Mamodman123

James wrote:
Jimbob Bigknob


Titan

Sorry I took a little while to get the photo sorted, but this is the arrangement on Titan:



Just a pipe soldered straight in to a thin ring and put under in this case the filler valve. Washer above and below. Only modification required is to file a verticle groove through the threads of the filler valve so steam can pass up between boiler bush and valve threads.

Although in this particular case it is showing the steam supply for the dynamo, (because it was easier to photograph!) the principle is the same for the whistle/pressure gauge. It also has the advantage that the height of the whistle is only increased slightly, so the lever on top will still fit through the slot in the cab.

You might find on the whistle that it is necessary to cut off the ring part of the upright on the whistle and solder that directly to the banjo fitting instead to lower the whistle a bit more - it should only sit a couple of mm higher then.

This also has the advantage that it does not matter how far you need to screw the valve in to get it to seal - with your arrangement if the washer needs replacing you may find that when tightened again the pipe does not line up anymore due to the new washer being slightly thicker than the old one and needing 1/8 turn less to tighten, which might tempt you to overtighten to get the pipe to line up again.
Titan

Actually after typing all that the photo actually shows the arrangement on the whistle for the pressure gauge reasonably well too - you can just make out the pipe going through in to the cab.
Mamodman123

Wow thats so simple Titan! I think ive got some brass tubing the correct size aswell!

I never thought about the washer either! This Way i can remove it easily too! I don't have a whistle on Rosa just a safety valve and water top up.

So all you do is file about half way up to let steam into the "ring"? Any chance of a picture of this Titan?
Titan

Dunno, my camera is not all that great at taking close ups.

You actually need to file virtually all the way up, you have to provide a path past the bottom washer, then the steam can find its way around the remaining threads above and because of that it does not matter if the filed groove does not line up with the pipe!
steamyjim

im hoping to 'titanise my new SL1'

we should send off to oxford dictionary people the new word 'titanise'

i can see it now

TITANISE: the act of converting ones mamod locomotive
Mamodman123

Titan wrote:
Dunno, my camera is not all that great at taking close ups.

You actually need to file virtually all the way up, you have to provide a path past the bottom washer, then the steam can find its way around the remaining threads above and because of that it does not matter if the filed groove does not line up with the pipe!


I see Titan! Very clever idea!
SillyBilly

Titan,
Have you tryed putting your camera on the 'flower' setting?
Titan

Yes, previous picture of Titan was on flower setting, Might have a go tomorrow night and see what I can do.
SPOKESMAN

Titan wrote:
Sorry I took a little while to get the photo sorted, but this is the arrangement on Titan:



Just a pipe soldered straight in to a thin ring and put under in this case the filler valve. Washer above and below. Only modification required is to file a verticle groove through the threads of the filler valve so steam can pass up between boiler bush and valve threads.

Although in this particular case it is showing the steam supply for the dynamo, (because it was easier to photograph!) the principle is the same for the whistle/pressure gauge. It also has the advantage that the height of the whistle is only increased slightly, so the lever on top will still fit through the slot in the cab.

You might find on the whistle that it is necessary to cut off the ring part of the upright on the whistle and solder that directly to the banjo fitting instead to lower the whistle a bit more - it should only sit a couple of mm higher then.

This also has the advantage that it does not matter how far you need to screw the valve in to get it to seal - with your arrangement if the washer needs replacing you may find that when tightened again the pipe does not line up anymore due to the new washer being slightly thicker than the old one and needing 1/8 turn less to tighten, which might tempt you to overtighten to get the pipe to line up again.


Clever and simple!
       The Unofficial Mamod and Other Steam Forum Forum Index -> Locomotives
Page 1 of 1