Regulator Running on

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Regulator Running on

Post  Flasback on Sat 20 Apr 2013, 4:26 pm

Don't know if i have done something wrong but i am having problems with my regulator. I started today running slow and out of nowhere the engine started to run really fast and did not stop when I but it in middle position or when I shut off the regulator (has happened several times). It feels like the steam pressure is lifting the regulator body and the spring is not man enough. I have put a layer of oil on the bottom of the regulator body to help it stick as Steve has mentioned but with no luck. I have also checked the regulator arm to ensure its not moving.

ANY ADVICE most welcome.

cheers


Dwain


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Re: Regulator Running on

Post  highpressure on Sat 20 Apr 2013, 4:42 pm

Regulator is very unlikely to lift as the pressure rises is pushes it with more force onto the seat, hence why it is quite difficult to open it when near to the limit ( at least on my engine ) as the surface area of the valve is more than 1 square inch so has at least 180 pounds or more on it. Most likely cause for what you are describing is the start valve letting by, sometimes mine gets slightly held open by the rod and causes the engine to run without regulator. The best way to check is when it is doing it pull the lever to mid to stop it and take off the LP valve chest and see if there is steam entering from the start valve. If thats a no then take off the HP valve and see if steam is entering from the reg port. As long as you keep it in mid gear and be aware of the fact that there is steam around so wear gloves and eye protection you should be safe. You can also check the timing when hot to get best response.

Useful to know what you find for others nearing this point.
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Re: Regulator Running on

Post  Tim Watson on Tue 23 Apr 2013, 6:56 pm

Dwain:
Have you checked that the engine is all done up tight? I would check the horn bolts to the boiler. Frederick's became loose over the weekend and the engine went a bit lively.

You may have to re-time the valves after re-tightening. When you do this take the LP cover offend then time the HP without the LP working, I.e. running as a single with the steam exhausting straight from the LP valve chest. When happy with the HP, then time the LP.

Tim
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Re: Regulator Running on

Post  highpressure on Tue 23 Apr 2013, 9:46 pm

I would underline the horn plate bolts, mine worked loose, screwed the timing right up and the broke the gauge glass at 150 psi, not somehting you really want to try!! affraid The best way to stop this happening is to take each bolt out one at a time, clean the thread and the hole and then refit with a good blob of JB weld. Once this goes off there is no danger of anything moving. Timing as Tim describes which is easier than it sounds and when you've done it once it's not that bad. It will run very smoothly then especially when it has run in a bit and loosened up.
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Re: Regulator Running on

Post  Steam Traction World on Wed 24 Apr 2013, 8:22 am

I would not recommend that you ‘glue’ your hornplate bolts in. Part of the problem is caused by the paint on the hornplates and boiler reacting to the heat. It’s under quite considerable pressure by the bolts and when it gets hot some of it will be squeezed out, reducing the thickness and slackening off the tightness of the bolts.

You should always check the tightness of all fasteners on you engine after every steaming for the first few times. After a while, things will settle down but its still worthwhile checking everything every now and again.

Regards

Steve

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Re: Regulator Running on

Post  highpressure on Wed 24 Apr 2013, 3:14 pm

I was hoping that the JB weld would take up the shape of the thread and allow the bolt to be undone if nessecary rather than using loctite or similar. I haven't tried to undo them so wouldn't know if this is the case but I was also thinking more along the lines of taking any slack out around the bolt and hole union as well as holding it in place.
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Hello

Post  Bryanh9904 on Sat 01 Dec 2018, 9:29 pm

Hi guys
What sort of pressure do you need to run on air and where do you put the air in?
I’ve gone for the extra hole (where siren would go)
I havnt sealed the valve chest or the safety valve but thought it might move even with a few leaks?
Any advise would be much appreciated

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Re: Regulator Running on

Post  Mark the spark on Sat 01 Dec 2018, 10:11 pm

I made a adapter for my compressor to fit one of the washout holes at the bottom of the boiler and when first run it required about 50psi and its now down to 25psi after several hours running and getting better every time

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Re: Regulator Running on

Post  Simon C on Sun 02 Dec 2018, 9:02 am

Hi Bryan

Its as Mark Said around 50psi to run quite smoothly for my engine.
I put the air in the same way as you are describing through the BSP hole on the top of the cylinder block.
Once you have connected your air supply to the engine it will need to pressurise the boiler space how long that takes depends on the size of your compressor and the amount of leakage that you have. Once the pressure has risen to around 75psi on the pressure gauge then go for a run the problem comes if you wish to sustain this run.
You need quite a lot of air to keep one of these things going, along with a good sized air supply pipe to deliver it.
Any leakage that you have may result in your compressor not being able to make pressure or even keep up when it does, so putting gaskets on chest and safety valve covers to eliminate some of them may be necessary to help in achieving your goals.
the gaskets do not need to be anything special cornflakes boxes make good gasket material and as you will undoubtedly need to break the joints several more times before you are finished the price is also good.(its not good practice to re-use a gasket although some do and get away with it) Also gaskets should be put on dry, that is what our manufacturers tell us, and I have seen evidence that supports this.
I have read something on here about engines that just will not run on air it was possibly in one of Lynn's blogs about Crystal, but my engine ran OK on air the first time that I tried it out, however it ran a dam site better on steam around 25psi and it still makes me smile until it hurts when I think of that day.
hope this is of help.
Simon (a fellow full roofer)
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Re: Regulator Running on

Post  the governer on Sun 02 Dec 2018, 4:42 pm

Easiest place, is rubber hose onto blowdown pipe, think mine turned over at about 30psi. Make sure you have plenty of oil in the cylinders.
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Re: Regulator Running on

Post  Bryanh9904 on Wed 05 Dec 2018, 9:42 am

Thanks guys,
Will be back in there tomorrow so will have another try.

Still waiting on the injector so might not happen Anyway. Sad

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