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Hi, I have a PM research #1 horizontal and #5 vertical engines. Yes you are right. I will start with low pressure boilers first. I was thinking a 3 bar boiler. But after Steamchicks calculations I think a 2 bar boiler will be much safer. regards Nikhil

Hi, Thanks for the calculations. I guess I will have to buy a 3mm copper plate and form end plates. One more thing to learn. Regards Nikhil

Hello, I am going through other sites on internet for information. What I could gleen from them is " A coal fired boiler produces a hot Sulphur bearing atmosphere that destroys joints made with copper phosphorus alloys.". So I think phoscopper rods are not used on steam locomotive boilers...

Hi, I read somewhere that rods with phosphorous should not be used for boiler construction. Then I read somewhere that these same rods were used in earlier boiler construction before advent of silver brazing. Then I read somewhere that brass should not be used due to de zincification. But I...

Hi, I am looking at many boiler designs. Mainly from www.modelengeeringwebsite.com. It has many boiler projects, independent or as a part of some other model. I am leaning towards Stuart like horizontal boiler with water tubes beneath the boiler for extra heat transfer. I was thinking of buying...

Hello, Thanks for all the suggestions. I have a 2.5"/ 65mm pipe gauge 16 or 1.6mm thick pipe. So that's the size of my boiler. It will be an all copper construction. I think I will do some practice soldering with the blue rod and my butane torch. If I am not successful I will approach a...

Hello, I am planning to built a model boiler for my PM research steam engines. I would not like to exceed working pressure of boiler more than 3 bars. I have gone through some plans on modelengineeringwebsite.com for the same. After seeing the plans I am confident that I can get all the...

Hi, W is crank throw; one half of stroke, H is Con rod length, L is the piston rod length. it is stroke + piston length + TDC clearance +BDC clearance + clearance between rod and gland. I am assuming this engine is similar to modern 2 stroke marine engine Regards Nikhil

Hi, You could think of incorporating an accumulator on the discharge side of the pump. The accumulator will smooth out/dampen the pressure pulse and will give almost continuous non pulsating flow. Regards Nikhil

Onboard an oil rig now in Persian gulf. Its summer here with temperature 45-48C and humidity in 30s. One time the temperature went to 53C in engine room. It was hell.

I had a similar problem with MEM website. First I signed up with my Indian Email address but they rejected it. Then I signed up with google address and I was allowed to join the site. But after few days I was banned from the site. Now they have banned my IP address too. I don't know why it...

Most of marine diesel engines are now dual fuel engines. Running on both oil or natural gas. Regards Nikhil

Hi, A ship or Rigs deck plating are never rigid. There is always some flexing, bending or twisting going on depending on sea condition or loading condition. The engines and propeller shaft are supported by additional strengthening frames to minimize this. Additionally there are always some...

Hi, I have a similiar lathe as yours. A Sieg C4B. I recently renewed all the bearings for this lathe. I also converted the lathe spindle to oil bath lubrication. Its an relatively easy mod to do. For seals I used generic oil seals that I got from Amazon. You can use these seals to keep the...

Hi, We recently got a new lathe installed on the oil rig where I work. The shipyard people just made a base of heavy angle plates and bolted the lathe to it. No checking of anything was done. Lathe was purchased only to fulfill some commercial requirements and to put a checkmark on some...

HI, The last time I run my lathe was about 1 month back. I made a backplate for my new 5" 4 jaw self centering chuck. The lathe was cutting the steel plate quite easily. DOC was about .3mm and rpm 200 if I remember correctly. Now after reading your post I have to plan and fix the lathe to...

Thanks, I will definetly try to contact him. regards Nikhil

Hi, This gentleman lives near to my place. I always wanted to meet him and learn from him. But I never was able to get his address or contact details. Regards Nikhil

You are in the process of making a beautiful traction engine. I am following this built from start. Inspired by you I have started to gather material for this built. I have made 2 of the PM research steam engines. The valve for those engines is not "fixed" to the spindle. Rather it is...

The displacer cylinder has to do two jobs at same time. 1. To transfer heat to the air inside it and 2. To avoid heat travelling to other cooler parts of the engine. These two jobs are totally contrary to each other. If you use glass tube which is insulator it does not do the first job...