The Unofficial Mamod and Other Steam Forum

mogogear · Posted: Mon Mar 24, 2008 4:09 pm Post subject: A top funnel for my stack

I am looking for a funnel cap to top the stack on my Modeen /Crompton boiler. The stack is plainly made of copper and is shade over 1" I.D. and 1 1/16"O.D.

I am looking for a nice pronounced "fluted " type .. Is there any sources for one that resembles a original Bowman 135? I am unsure what size their stacks are////

Thanks ( I have checked a few known resources to me but I am sure I do not know all the right ones!!)
_________________
regards,

Mo

This week I are His Most Noble Lord Mo, the Apocalyptic of Old Tonbridge Wafers

johnreid · Posted: Mon Mar 24, 2008 4:14 pm Post subject:

The stack on my 135 is .9725 inches

I think it would be so easy if one had a lathe. Do you know anyone who is a machinist?
_________________
Your life is an occasion...Rise to it

Nick · Posted: Mon Mar 24, 2008 4:16 pm Post subject:

I think he does.

Les · Posted: Mon Mar 24, 2008 4:51 pm Post subject:

Bowman chimney sizes:-

101 chimney, 8 1/2" long, exhaust pipe hole 2 5/8" from bottom.
101 chimney slots 3 1/4" from bottom, 3/4" long.

122 chimney, 6 3/4" long, exhaust pipe hole 2 3/4" from bottom.
122 chimney slots 3 1/4" from bottom, 1/2" long.

135 chimney, 5" long, exhaust pipe hole 1 1/2" from bottom.

All chimneys are made from 1" brass tube
_________________
Les - Old age isn't so bad when you consider the alternatives.

www.freewebs.com/lesmarsh

mogogear · Posted: Wed Mar 26, 2008 4:57 am Post subject:

Bogstandard · Posted: Wed Mar 26, 2008 7:40 am Post subject:

Mo,

Show me one similar, or do a quickie sketch and post it here, to get the shape that you want.

Borrow a vernier and get the exact in and out dimensions. Near enough isn't good enough if time is to be spent on it.

I will see what can be done from the recycle box.

Postage costs only required for this one

This isn't a worldwide offer, otherwise I would be making chimney caps forever.

John

If you can get that done, I might be able to show on here how easy they are to do, and anyone with a small lathe can churn them out by the dozen.
_________________
If it looks right and feels right, then it is right.

mogogear · Posted: Wed Mar 26, 2008 5:31 pm Post subject:

Thanks John- I didn't expect you to reply here- I thought Nick or somebody had a lathe just waiting to be used...

I know my Modeen will run even better with a "Bogstandard" cap on top of the stack!!

O.D of copper stack pipe=28.02mm

I.D. of pipe=26mm

Height from top of stack- Ok with 20mm-25mm what I am aiming for or scan a quick sketch .. back with an edit soon..

Thanks again for your kind offer..
_________________
regards,

Mo

This week I are His Most Noble Lord Mo, the Apocalyptic of Old Tonbridge Wafers

Bogstandard · Posted: Wed Mar 26, 2008 5:50 pm Post subject:

Do you want something like the funnel cap on Odilons new steam plant in his new boat?

John
_________________
If it looks right and feels right, then it is right.

mogogear · Posted: Wed Mar 26, 2008 6:34 pm Post subject:

That would be just dandy!! Please feel free to interpret with what material you have available..

A beggar is not a chooser!!

I bow as I leave the room!!
_________________
regards,

Mo

This week I are His Most Noble Lord Mo, the Apocalyptic of Old Tonbridge Wafers

Bogstandard · Posted: Wed Mar 26, 2008 7:49 pm Post subject:

Mo,
No problems, I will see if I can squeeze the article out of myself tomorrow, but no promises. I have a long appointment tomorrow.

John
_________________
If it looks right and feels right, then it is right.

mogogear · Posted: Wed Mar 26, 2008 8:21 pm Post subject:

I have a long way to go before t he cap on the stack holds me back from steaming the pond....

At your convenience..
_________________
regards,

Mo

This week I are His Most Noble Lord Mo, the Apocalyptic of Old Tonbridge Wafers

johnreid · Posted: Wed Mar 26, 2008 9:04 pm Post subject:

A true act of kindness and generosity. A good thing to see. Compliments to both of you, isnt this place great?
_________________
Your life is an occasion...Rise to it

mogogear · Posted: Wed Mar 26, 2008 10:18 pm Post subject:

You are Oh, so right John. He ( and others ) is way too kind... I do not have a lathe- and I thought Nick was fishing for a small custom job.. which I was glad to pay someone for things needed..

I sure didn't expect John to respond..

..

A kind group indeed... I am going to have to figure out a name that rolls off the tongue that pays homage to this T. U. Mamod & other S. F. crew with a name on the stern of a boat...TUM&OSF just doesn't do it justice....

_________________
regards,

Mo

This week I are His Most Noble Lord Mo, the Apocalyptic of Old Tonbridge Wafers