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Author Topic: Maxwell Hemmens Steam Plant  (Read 24707 times)

kno3

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Re: Maxwell Hemmens Steam Plant
« Reply #25 on: October 26, 2009, 10:19:36 am »


 One final question before I depart where on the plant would I find the boiler number generally


As far as I know, Wilesco boilers don't have any numbers. Wilesco safety valves are set to blow between 1-1,5 bar, which you shouldn't exceed.
Otherwise, running the plant is straightforward. Don't forget to lubricate all moving parts and to add steam oil to the cylinder oilers before running. And before starting check that the safety valve is clean and in working condition.
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BlueWotsit

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Re: Maxwell Hemmens Steam Plant
« Reply #26 on: October 26, 2009, 01:59:10 pm »

As far as I know, Wilesco boilers don't have any numbers. Wilesco safety valves are set to blow between 1-1,5 bar, which you shouldn't exceed.
Otherwise, running the plant is straightforward. Don't forget to lubricate all moving parts and to add steam oil to the cylinder oilers before running. And before starting check that the safety valve is clean and in working condition.

Thanks for this good guidance.

Reference the boiler number question, is that I have found amongst the paperwork that came with it all, a Boiler certificate from 1991, ok I know its out of date but it is for a Maxwell Hemmens boiler which all seems mighty weird.
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BlueWotsit

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Re: Maxwell Hemmens Steam Plant
« Reply #27 on: October 26, 2009, 02:01:18 pm »

You asked for more information about it and thats what you got, you where told it was not what you thought it was . which is important because if you tried to run it at the presure a mawell Hemmens runs at it would have gone Bang as it is a brass boiler and will not take the same pressures

Peter

Hi Peter - dont get me wrong Im grateful for all guidance I just felt that a couple of responses and I mean a couple, didnt feel quite right in context to my original enquiry - then again perhaps it was just that Monday morning feeling

cheers
Andrew
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Colin Bishop

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Re: Maxwell Hemmens Steam Plant
« Reply #28 on: October 26, 2009, 02:08:25 pm »

Maybe the documentation inadvertently got swapped with that from another boat - after all it's 18 years ago.

Colin
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handlebar

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Need Advice on a Steam Engine Purchace
« Reply #29 on: October 30, 2009, 05:59:30 pm »


I am currently building a 48 inch Stern Wheeler that will have a build weight of about 24.5 pounds with fuel and water.  I have an opportunity to bid on a Maxwell Hemmens Canton Steam Marine engine and Boiler with twin 3/8" engine.  Will this have sufficient power for my boat or do you have any suggestions? 

This is my third steam engine build.
Thank you for your help.
Bob

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Bunkerbarge

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Re: Maxwell Hemmens Steam Plant
« Reply #30 on: October 30, 2009, 07:10:23 pm »

I would say that the Caton twin would provide plenty of power for a boat of your size.  I have a twin Richmond, which is a small oscillator and it pushes a 48" model that displaces about 32 lbs at way over scale speed so you should have plenty of reserve.
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Bunkerbarge

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Re: Maxwell Hemmens Steam Plant
« Reply #31 on: October 30, 2009, 07:30:47 pm »

Andrew, I'm afraid you have to accept that paperwork supplied with a model means nothing as at some point in the models life the paperwork has become lost and the wrong ones attached to your plant.  You may have even bought it from someone who genuinely believes that he has sold you a Hemmens Caton but the bottom line is that it isn't and I'm afraid a Caton twin is worth a lot more than a Wilesco so you have to now be honest when considering what to do with it.

If you decide to use the model, and why not it's a perfectly good model to cut your teeth on as regards a first steam plant, then you should do a bit of reading as regards how to look after and operate such a plant and then enjoy yourself at the pond.  As I've said above the engine should be run in first and then you can go onto putting some steam through it.  The safety valve must be tested long before you even consider doing this so I would firstly put a bit of time into running in the engine and getting to know how it all operates.

I'm afraid a lot of people buy a steam plant and expect it to be as simple as an electric motor but unfortunately you need to put a lot more into it than that.  Having said that the rewards to me anyway are far greater so well worth the effort but you do need to have an idea of what you are doing because at the least you could damage the plant and at worst you could hurt yourself.

The articles I wrote for Model Boat Magazine are all aimed at the first time steamer so give just the sort of guidance you are looking for.  If you subscribe you can access all six articles on line so it's a pretty useful thing to do.

I get the impression that you are trying to run before you have learnt to walk and are now getting impatient with the model.  I can assure you that is normal and you have to reajust your thinking from electric to steam and slow down a bit!  Run the engine in, test the boiler and test the safety valve, test the engine on steam on the bench and only then, when you are confident in the fact that it is all going to work, do you put it in the water.  You need to then get a feel for how much water the engine is going to use, how much gas it's going to consume and how often the engine lubricator needs filling before you venture too far away from the bank.


If after all this you decide to give up on it you will have missed out on a very satisfying and rewarding aspect of model boating, which is a shame, but you will have to sell it on as a Wilesco plant and not a Hemmens Caton.  You may as well advertise the instructions seperately as they are of no use to this model at all.  I would stay with it because when you see the point of it all the bug will bite and you will start to really enjoy it, although of course youmight have to accept that you may never see the point!
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BlueWotsit

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Re: Maxwell Hemmens Steam Plant
« Reply #32 on: October 31, 2009, 09:04:16 am »

Peter has it right, Its the Krick Brass Marine Engine from the "The Patricia" model boat kit It has a brass boiler which does not like gas fireing, There were a couple of them around here a few years back and they all leaked. I have the Wilesco D48 set and it has the same style cylinder covers (the original boiler with it leaked too).
Regards,
Gerald.

Hi Gerald

The guy who sold me the boat as part of a job lot has now finally got back to me, after speaking to the original owner - apparently the boat had spent the last 15 years or so in a glass case and has probably never ever seen water !! - The price I paid was fine for the boat in the context of the job lot so not worried about that - just not quite the bargain I hoped for but good all the same

The proper original paperwork has surfaced and as you correctly surmised, it is the Patricia - no one knows why the Boiler certificate was inside the model though..........good that Ive got the Krick build instructions for the boat as well.

Off now to read Bunkerbarges articles on the Model Boats website and to go from there

Thanks to all, and if anyone has knowledge of this exact boiler (other than potential leaking) can they let me know - unless of course they also know how to stop leaks if they start  :embarrassed:

cheers
Andrew
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sheerline

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Re: Maxwell Hemmens Steam Plant
« Reply #33 on: October 31, 2009, 10:17:55 am »

Hi Andy, just saw this thread for the first time and noted your question about the boiler. I would say it is definately a Wilesco boiler.  I used to have the single cylinder, vertical boiler, stationary engine and without a doubt, this looks exactly the same, as do the cylinders for the engine itself and this is something the other chaps have noticed too.
The boiler is constructed of very thin walled brass and is silver soldered, they were usually chromed or brass plated. If you ever sprung a leak, you will have to adopt a very careful technique for repair because you will need to remove the plating from the offending area before you can actually get any kind of material to 'take' to the surface. I would be wary of your gas burner, if it were too fierce, the small safety valve may not cope and excessive pressure may build in the boiler itself. These were only designed to be run using pellets or meth burners. Perhaps this unit had a gas burner fitted to generate extra steam since this boiler was originally inteded to run only one of those cylinders in it's original stationary engine form.
In ignorance, I put some de-scaler in one of these boilers many years ago and it ate through the thin walled vertical tube and turned it into a pepperpot!

I think it's a nice little steam plant arrangement you have there and it should work very well by the looks of the setup. It won't be particularly powerful but treat it gently and don't push it too hard and it should run for years, giving you loads of pleasurable sailing.

Enjoy!
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BlueWotsit

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Re: Maxwell Hemmens Steam Plant
« Reply #34 on: October 31, 2009, 12:41:56 pm »

thanks for this, reading the paperwork it seems that Krick utilised a lot of Wilesco parts in their boilers, but it implies not 100 percent.

Nonetheless your comments will prove very useful for me to remember


cheers
Andrew
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steamboatmodel

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Re: Maxwell Hemmens Steam Plant
« Reply #35 on: October 31, 2009, 03:57:55 pm »

Hi Andrew,
The problem with my boiler leaking (Wilesco D48 also butane fired), I fixed by removing the plating around the leak with fine sandpaper until I could see the brass. I then fluxed the area and silver soldered the hole closed. I used a small hot flame and just played it on the leak area. I then cleaned and rinsed the boiler out with citric acid. The final step was to hydro test the boiler to 50psi (twice working pressure).
Regards,
Gerald.
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BlueWotsit

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Re: Maxwell Hemmens Steam Plant
« Reply #36 on: October 31, 2009, 04:59:47 pm »

thanks for that Gerald Ive printed the tip off and put in with the paperwork

Andrew
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ROSYTH

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Re: Maxwell Hemmens Steam Plant
« Reply #37 on: November 01, 2009, 07:47:43 pm »

Hi Andrew, welcome to the forum where you will receive top quality guidance (with no bells and whistles ) {-) on running your steam plant, which is as you have now found a Wilseco!!

On your original thread you say this launch came as part of a job lot, is this the only one to have had a steam plant or are there more yet to surface? If so we would welcome some more
images posting of the other models you aquired.

Once again welcome to the fold and may you have many happy hours learning and steaming.......... :-))

Cheers
Rosyth
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BlueWotsit

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Re: Maxwell Hemmens Steam Plant
« Reply #38 on: November 04, 2009, 05:13:23 pm »

Hi - this was a one off - Im going to give it a go and see if its for me or not, Im keeping an open mind on this as I was watching a guy at our lake the other week with one and it was good to see


Andrew
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HandlebarBob

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Re: Maxwell Hemmens Steam Plant
« Reply #39 on: November 07, 2009, 01:24:27 pm »



Thank you so much for all your answers, much appreciated.

I am waiting for it to arrive now and will probably have a lot more questions.
I just found my original Log In once I was a member again.  I thought I had signed up.
Oh well.

Bob
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HandlebarBob

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Re: Maxwell Hemmens Steam Plant
« Reply #40 on: November 19, 2009, 04:54:51 pm »

I recently bought a Maxwell Hemmens Canton steam set from 1983 in unfired condition. The first run was very good, but on the second run the Super Heater Coil blew a hole in itself.  The motor is an upright 2 Cycle with a 3/8” bore.  It is a complete set up with water pump and displacement lubricator and auxiliary water tank. The original disposable bottle and a refillable gas tank with adapter also was included with my purchace.

The tubing appears to be about 1/8” or 4mm and appears to be brazed on both ends to a nut. What type of copper tubing should I use? Should I use another metal?  Will silver solder withstand the heat?

Does Anyone know if there is a place I can send the blown out piece to have a new one made?

Thanks
Bob

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HS93 (RIP)

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Re: Maxwell Hemmens Steam Plant
« Reply #41 on: November 19, 2009, 07:56:17 pm »

did you turn the steam off on top of the boiler at any time ?? that line must stay live when the burner is running , some plants seem to have to many valves on them have you got a picture of your plant as you need to sort the problem out before you re fire with a new heater.

peter
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Bunkerbarge

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Re: Maxwell Hemmens Steam Plant
« Reply #42 on: November 19, 2009, 09:26:32 pm »

Are you sure it's an auxilliary water tank?  I ask because the Caton plant I have has a seperator tank fitted.

As for the superheater you could simply run the plant on the bench without the superheater fitted, just replace it with a straight piece of copper tube.  You can remove the brass fitting from one end, cut the pipe short and then resolder the brass fitting back on the shortened pipe.  Silver solder is fine for this job but make sure you clean up the pipe thoroughly before refitting the brass nipple.

Then you simply need to get another length of copper pipe of the same diameter from either a hobby outlet or on the internet and make up your own easily.  Make sure you anneal the copper very regularly during the bending process and stop bending as soon as you feel it stiffen.  I wouldn't put the nipples back on either until you have bent the pipe to the required shape.  There's a good chance you will kink the pipe before you get more experienced with it.
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gondolier88

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Re: Maxwell Hemmens Steam Plant
« Reply #43 on: November 19, 2009, 09:51:08 pm »

You could silver solder a patch of copper over the hole, but I doubt that the integrity of the rest of the pipe is adequate.

Greg
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Don't get heated...get steamed up!

derekwarner

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Re: Maxwell Hemmens Steam Plant
« Reply #44 on: November 20, 2009, 05:06:39 am »

Bob...correctly selected copper tubing from original manufacture even in a super heater application should not decay or loose mechanical properties over the years, where as brass tubing certainly could 

As Peter suggests...best to post a few .jpg images prior to making any rectification attempts ...... O0 ....Derek
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Derek Warner

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