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[derekwarner]

Red……just thinking & see a few potential issues with the current gas regulator pilot source

1.   If you were to open the boiler steam discharge valve @ the lighting of the boiler you would fill the steam line to the lubricator with condensate during boil up
2.   You could also have an issue where the condensate displaced the lubricator steam oil at a high rate at the cracking of the engine steam distributor valve
3.   If you kept the steam discharge valve closed @ boiler lighting until the boiler relief valve cracked, by opening the steam discharge valve would immediately send the pressure signal to the regulator to go into low flame mode
4.   Certainly 1. & 2. are not acceptable, however 3. is not necessarily a sound change in system functionality considering the critical time where you need to clear condensate & ensure stability of the gas regulator flame height & hence pilot signal
5.   Cotton string insulation will certainly assist with minimizing condensate from the boiler steam discharge valve………..to the lubricator

Bernhard…….would you like to comment on the advantages of insulation on the discharge side tube from the engine to the separator? ....Derek

[Circlip]

As an observation and NOT a critisism, going with Dereks point No.2 why have a steam through flow of the displacement lubricator?? They still  work on a "Leg". Despite having a control valve, I would expect a venturi effect. Many roads to Rome.

  Regards  Ian.

[gondolier88]

Circlip is completly correct- should you find condenstae is a problem regarding displacement of oil issues then you could;

1- put it on a dead leg- just 'T' into the main line and place it 1" or so away from it.
2- As Derek suggests put a steam stop valve on top of the boiler, or as he also suggests,
3- Insulate the line to minimise the problem.

However, that said TVR1's work at such low pressure that the saturated steam would lubricate the cylinders without oil with no detrimental effects anyaway, so you could just choose to ignore all of us and leave your lovely pipework as it is!

Greg

[kno3]

Guys, give the man a break and look more carefully at his pictures: the steam pipe to the gas regulator is not closed by the steam valve for the engine. They just share a common T-connector.

[Circlip]

You're looking at the wrong pipe Kno3, the one we are seeing is the one connected to the Displacement Lubricator and as far as giving the guy a break, both Greg and I have stated "An Observation"

  As it stands, he can run out of lube far quicker than desired.

  AGAIN, Many roads to Rome.

  Regards  Ian.

[derekwarner]

Gents....maybe I have to eat 1/2 of my hat.... ......[please keep the  @ bay] 

When I review forest .jpg I see the boiler discharge steam isolation valve is outboard of the supply [of the pilot signal] to the gas regulator....& it is an assumption that the needle valve controls only the steam supply to the lubricator

It is lucky we have ten thousand members looking over our shoulders 

Sorry Red for any false assumptions  ......Derek   

[Circlip]

Hmm, Double indemnity to shut off the steam supply to the engine, wonder why??

  The Steam dome take off has a globe valve that can turn off the supply to the lubricator/engine and another globe valve to turn the steam supply off at the lubricator.

  Refill the Lubricator while the boiler is in steam??? 

  Regards  Ian.

[red_noir]

wow ! keeping up with you guys is tiring ! 


There is no mystery in how I set up my pant. The lubricator I used had a shut off, that's all!
 
I was hoping to modify it, and use it as a crude throttle valve instead of paying 45 pounds for a throttle valve.

I use what I have.

Anyhow ! 

I bought the boat this is going in today, some of you might recognize another member has that same boat ! should be fun seeing how mine will differ !

[mogogear]

Nice choice on the boat RED...



I know Bernhard will approve also..

I have one of those in my sites for future project too!!

[Bernhard]

hi..............Great boat.........and the your ide ,with strip it down it real good...i didnt do that ,,,so i have to lack,,,it many times...it whas not easy to do it water tight,,,,,,,,,,,,

Regards Bernhard

[red_noir]

hey thanks Bernhard, Ill strip the paint down for sure and epoxy the hull !

I was just wondering if you could post a pic of the prop shaft to engine setup you have on your boat?

Red

[red_noir]

UPDATE !

Boat arrived today, and after about an hour of tearing a good boat apart this is what I'm left with !

I also came to the realization that my steam plant setup has to be revised so that it fits in the boat.

Ahh well ! 

RED

[derekwarner]

  ...Red...it's only a few more lengths of K&S beautiful brass or copper tube & will look great...I also see the whistle is installed...however a few observations

1. you may need to angle the engine down say 5 degrees
2. have you considered the major surgery to provide prop clearance?
3. you may need to revise the scale effect & remove the ore rowlocks & things

If I were building such a vessel I self admittedly would go back & study the many .jpgs posted by Bernhard in his threads on similar looking vessels .....Derek

[derekwarner]

Just thinking Red...... @ my age......this is a perfect time to complete displacement trials & inclination tests 

1. get the bathroom scales out & confrim the dry weight of the hull
2. whist in the bath room 1/2 fill the bath [with water] add the basic hull ....gauge the draft....add the engine+boiler [filled with water]+the condensor+gas tank+4xAA sized batteries+3x servos ...then gauge the draft
3. from here you can reasonably accurately calculate the mass of ballast required to bring the vessel to correct operating draft
4. if luck is on your side  ...you could consider a full  length of 1.5 mm thick galvanised plate with up turned sides....this would enable all of the components to be installed on the bench top out of the hull & the tube spools  created , bent & installed as one complete engine/boiler assembly...all you need to do is loosten 1/2 of the engine to shaft coupling to install/remove  ......

I am sure many Mayhem members would be interested in the displacement trial results............ Derek

[red_noir]

Ore locks are all gone, I had planed to remove them anyhow before I snapped the pics ! As for calculating draft, It will have to wait. Unfortunately the Lapstrake construction of the hull on a desk top model, doesn't lend itself well to water tightness !

Multiple coats of finishing epoxy will be applied to water tight the hull !

I have a question in regards to paint, what type do you guys use? and do you spray it with a clear coat of any sort after the final painting is done?

my idea for this model is my own loose rendition of a small wooden fishing vessel, something like a Monterrey clipper.

Tomorrow work begins on working out a way to make the steam plant removable from the boat for  easy maintenance.

[MONAHAN STEAM MODELS]

Hey, that lake looks familiar! And the boats too. The photo must have been taken on one of the rare sunny days too.

[Bernhard]

Hi........ here is another one....... http://cgi.ebay.co.uk/Model-Live-Steam-Launch-Fully-Working-/200480484547?cmd=ViewItem&pt=UK_ToysGames_ModelKits_ModelKits_JN&hash=item2ead916cc3

[benjaml1]

Stunning work as always... 

[Bernhard]

Hi......Thanks........Bot it is not mine........it is on Ebay i did see it,,,,,,,,,,,

[Bunkerbarge]

Lovely model but I think the price is a bit ambitious

[red_noir]

Bernard ! I do like your boats better, your attention to detail is incredible !

Well I grabbed the camera and snapped a few pics, sorry for the grainy photos but the battery went dead on my DSLR so I had to use my point and shoot ! none the less this is where I'm at. The hull got some planking done on the aft and fwd decks using coffee stir sticks as decking and applied some stain and a coat of epoxy. As for epoxy the entire boat has had two coats and I'm quite confident its water tight now ! The bathtub test is soon to follow ! I also now have an occupant for my boat !( hes held on temporarily by tape )  The neat thing is his r\h arm is attached to the rudder so when it moves so does his arm giving the illusion he's steering the boat !   anyways enjoy !

Red

[MONAHAN STEAM MODELS]

Nice work! She's starting to take shape now.

[Bernhard]

Hi.. .........where the skeleton sit....there i have made a sit..and under there the batteries is,,,,,
Regards Bernhard

[red_noir]

Thanks Guys !

Bernard I'm going to house the servos and radio gear in small crates around the inside of the model, something along the lines of what you do with your servos in your boats. I have high torque metal gear micro servos looking for a home at the moment, so the should work fine as-well as a micro receiver.

also here's a pic of the re-work I did to the hull, its not done but you can see the section I removed to house the 5 blade 50mm prop !

[gondolier88]

Hi Red Noir,

Just a little point about the cutout you have done- you may find it blocks the prop quite a bit- it might be worth looking into making it taper more onto the prop.

Greg