safety valve drawings

This type of safety valve would be fine if you have a Gresley pacific or a Lord Nelson , but I don't think you will ever see an industrial fitted with this pattern of Ross pop valve. Miles too big and the release is pretty violent when it happens.

 

Just another thought on this subject. The NRM have the Peckett collection of drawings in their archives. Whilst Peckett's generally had their own design of safety valves, it is quite possible that there are some drawings of Ross valves amongst all of these. The NRM also have plenty of other drawings to go at. it is quite possible that some of the smaller LNER & LMS locos had the standard 2½" Ross valves fitted and they have the drawings. It would need a visit to the Search Engine, though and there's a long list of drawings to wade through.....

 

If the valves are the same as those on Chislet, then why not ask the owners to loan the valves to a company/organisation that they would trust, say Hunslet, MHR, Bluebell etc who would then copy the valves for your loco. No risk to the owners of Chislet and you get your valves - everyone is happy!


Keith

 

Suggest you try these guys if you can't find any original drawings of the correct valves .... http://www.steam-loco-design.co.uk/pages/safety_valve_design.html

Looks like they might have the ability to start a design from first principles.

 

the nrm is one source we'd considered the only problem i'd guess would be the fact that we'd have to sort through hubdreds if not thousands of drawings. the mining museum have a set but again they are amongst thousands of other drawings that could take years to sort through.

 

At the NRM the ex LNER Doncaster drawings are catalogued and are quite comprehensive. Also the ex LMS Derby and Crewe drawings are catalogued, but there are a massive number missing.It is just a question of looking through the catalogues to see what they have. These catalogues on on the public side at Search Engine, so you do not have to make an appointment to view them. There are also a number of other catalogues of drawings there, maybe some are of companies that built Industrial locos.

 

please bear in mind peeps that we've only got til the end of feb to get the drawings find a pattern maker and foundry and permission from our funding source so time is very tight. like i said if anyone has some actual working safety valves that they may be willing to sell that would solve a lot of problems.

 

As I mentioned earlier, the Peckett drawings at the NRM are catalogued. It's just a question of scanning a lot of pages of listings and noting down any drawing that looks promising! Take plenty eye-drops. If you've only got till the end of Feb, you need to be knocking on the door of the NRM at opening time on Monday and have a pattern maker on standby.

 

Notwithstanding that Steve, I'd be ringing "Chislet"'s owners. When I failed to get drawings for my steam roller's safety valve assembly, I borrowed a complete assemblage from the owner of one of the other 6 of this type and a month or two later had a complete brand new set - and an empty bank account!

 

hi anthony. we have been onto the owners of chislet and understandably are a little reluctant to lend their valves to us as they dont know us from adam and as far as they know we would just have them away. they've offered us the chance to go and see them and get measurements/photo's etc but even this requires logistics on a major scale as we'd need to take the pattern maker with us and ideally he'd need to take them to his workshop etc etc. like i said i can understand the reluctance of the owners as they dont know us.

 

and hopefully hunslets will have a set of drawings.

 

As I said, I think you're right. Clearly it all depends, rather a lot.

 

who said railway preservation was simple?

 

How about Embsay and York No.1? Perhaps even if you went to Quainton to see what sort of thing was needed, it might convince the owners of your reliability and integrity. Print out this thread and show them how seriously you need assistance. Offer them a deposit even or a donation to their fund for the borrowing of a valve - if you can show them you're serious, it may help. Or is there someone on here from Quainton who could help by photographing and measuring. I can't remember away from my desk where the YEC drawings are...

 

If you don't mind me asking then, what's the score here?

Are you looking to hand this off as a project, or are you project managing it?
Do you have to have spent the money on a fixed price job before the end of February, or do you have to have the actual valves in hand by the end of Feb?

I would have thought, if the price is right, it wouldn't be too hard to find someone "reputable" to take the job as a whole on.

I doubt you can expect delivery by the end of Feb, but I would have thought that you could get someone to cost it (research, design, manufacture) and fix a price.

The down side is that short time-scales are naturally expensive.

 

its like this the source of funding is available or has been indefinitely but we only found out about the source of funding recently and have been told that due to budget cuts the money is "likely" to disappear by the end of feb. we dont have to go for safety valves the money could be used for anything but as the loco is missing its safety valves we saw this as an ideal opportunity to try and sort this problem. this is one of the reasons why we are looking at the hunslet option. i'm glad anthony mentione the loco at embsay as i had completely forgotten about that loco. will search out that idea. award yourself a house point. cheers guys

 

I will check with folks at Foxfield and see if anyone has anything in the way of spares available

 

cheers nigel

 

Nothing suitable I'm afraid, what there is would be too small. However did you see these when they were up for auction on Ebay? http://cgi.ebay.co.uk/Railway-safet...temQQimsxq20100117?IMSfp=TL100117224002r14201
They didn't get bid on so might still be available. A colleague got some more info on them and they are stamped 200psi and have 71/2" dia flanges.

 

UPDATE. thanks to everyone for their help. have spoken to the owner of chislet and she is going to send us some drawings. a few strings at quainton were pulled so i'd like to thank the guys and gals down there. just spoken to the owner of chislet and she's going to get them in the post. also may be a development with the YEC 0-4-0 at embsay with regards to their safety valves. questions are being asked at the moment so we may be able to borrow theirs and i will check out those on e bay. thanks people. most appreciated. dont you just love it when a plan comes together!