Archive for The Unofficial Mamod and Other Steam Forum The Original Unofficial Toy Steam Forum
Established 2006
The biggest, most popular global 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 -> Technical tips, Details, Home Builds and Help Me!!
verithingeoff

Safety valves, threads and gauges

G'day guys---
1 Can anyone tell me what the size and rate of the various threads are on the Mamods [safety valve, whistle and level plug]
2 What pressure shoud the SV lift?
3 Can I screw a pressure gauge into the whistle fitting on my SR1s
TIA
johnreid

I believe there is a thread about that in the reference section, a section well worth looking through, all kinds of useful info.
verithingeoff

Thanks for the info John, I'll go down and have a dig---
verithingeoff

OK a bit of digging gets me 1 and 3, what about the let off pressure on the SV?---
Wallace

The pressure release of Mamod Safety valve is 15psi (15.something anyway).

I once tested a few, and found some didn't open until near 20psi
verithingeoff

Thanks for that Wallace, any idea where I can by a 1/4" gauge over here?---
Wallace

verithingeoff wrote:
Thanks for that Wallace, any idea where I can by a 1/4" gauge over here?---


A safety gauge mate?

The only ones I have seen are these on ebay. It reads up to 80psi, so the increments might be a bit too largel to really notice 15psi? They look good though

http://cgi.ebay.com.au/STEAM-ENGI..._Powered_Toys?hash=item3a52e5b2ac

But you'll need an adaptor. Clinton might be able to help you as he gets a model engineer place to make his whistle adaptors (I think)

Another option is try Forestclassics in the UK. I am sure they sell gauges to suit Mamods. Might not be too bad cost wise.
scorpion2nz

verithingeoff wrote:
OK a bit of digging gets me 1 and 3, what about the let off pressure on the SV?---

 I am sure someone will correct me but I thought somewhere in the 14 to 20 lbs a Square inch
Les

Forest Classics sell them and they are '0-30'

http://www.forest-classics.co.uk/pressuregauge.htm

http://www.forest-classics.co.uk/pressureadapter.htm
xlchainsaw

there is guy in sydney on ebay that has them. im unsure but i think greg at mca can get them and he is at redcliffe  (just down the road from you!!!! lol lol lol) you could email him.
http://www.modelcomponents.com.au...mid=26&vmcchk=1&Itemid=26
       The Unofficial Mamod and Other Steam Forum Forum Index -> Technical tips, Details, Home Builds and Help Me!!
Page 1 of 1