waterloo traction engine .29 scale

[sawyer massey]

Thanks

 

[sawyer massey]

2 nd govener castings straight from the sand

 

[sawyer massey]

2nd set of governor castings

 

[sawyer massey]

To day's castings
Connecting rod cross head eccentric and strap steam chest cover

 

[dgcarlson12]

What kind of government regulations do you need to adhere to regarding safety concerns i.e. boiler explosion/certification etc?

 

[sawyer massey]

What kind of government regulations do you need to adhere to regarding safety concerns i.e. boiler explosion/certification etc?

In Ontario you are allowed so much heating surface
A boiler barrel under 16 inches
An run 100 psi or less
Can't be over on any on thing
We are running at the max heating surface allowed
Hope this helps

 

[HMEL]

What kind of government regulations do you need to adhere to regarding safety concerns i.e. boiler explosion/certification etc?

It depends on who has jurisdictional authority. In the U.S States retain that authority and there are a few States who have no standards. In addition to the Sates cities may also claim jurisdiction. Many simply state in law follow the ASME standards. Europe and Canada set their own standards DIN is one. Technically the ASME has on average higher safety factors. Inspectors are often certified and work for insurance companies.

The ASME for instance has a section on Miniature boilers in which the parameters are defined. To qualify in this category its less then 16 inches in shell diameter, less then 20 square feet of heating surface, less then five cubic feet of gross volume, and less then 100 psig allowable working pressure. The testing standards are less but require a hydo static pressure test at three times the working pressure while big boilers its 1.5 times. Now I am retired so some of this may have changed. Your jurisdiction will tell you what hoops you will have to jump through to get a boiler certified.

Now I know many of these boilers are not certified and if you build one make sure you are confident in the design. I prefer a hydro test done with water. (always with water) I have found its the most reliable test and is accepted and sometimes preferred. Remember you will be the one standing along side of it as you pressurize it with firing.

There can be two types of explosions. One from fuel mismanagement and one from structural failure. I have only seen one structural failure and it was as bad as any fire explosion I have seen.

You may have to spend a few coins to get it certified but its worth every cent you spend.

 

[sawyer massey]

It depends on who has jurisdictional authority. In the U.S States retain that authority and there are a few States who have no standards. In addition to the Sates cities may also claim jurisdiction. Many simply state in law follow the ASME standards. Europe and Canada set their own standards DIN is one. Technically the ASME has on average higher safety factors. Inspectors are often certified and work for insurance companies.

The ASME for instance has a section on Miniature boilers in which the parameters are defined. To qualify in this category its less then 16 inches in shell diameter, less then 20 square feet of heating surface, less then five cubic feet of gross volume, and less then 100 psig allowable working pressure. The testing standards are less but require a hydo static pressure test at three times the working pressure while big boilers its 1.5 times. Now I am retired so some of this may have changed. Your jurisdiction will tell you what hoops you will have to jump through to get a boiler certified.

Now I know many of these boilers are not certified and if you build one make sure you are confident in the design. I prefer a hydro test done with water. (always with water) I have found its the most reliable test and is accepted and sometimes preferred. Remember you will be the one standing along side of it as you pressurize it with firing.

There can be two types of explosions. One from fuel mismanagement and one from structural failure. I have only seen one structural failure and it was as bad as any fire explosion I have seen.

You may have to spend a few coins to get it certified but its worth every cent you spend.

Thanks
I have bin around and running steam engines for over 45 years my dad and his dad were to we still own my grandfathers engine
I was certified to weld high pressure pipe up to 40 inches in diameter
Let that laps did not use it any more
I have built three other boilers 2 for the Sawyer Massey I built one for a goodision I made .......and yes you are more then right design right and know what you are doing around steam boilers
Thanks
Todd

 

[sawyer massey]

This a picture of my Sawyer Massey
And a 21 up Robert bell I own .....not my grand fathers...that engine is in the north still

 

[sawyer massey]

Slowly coming along
Just drilled the crank to check clearances
On ecentrick and strap complete the other 90%

 

[sawyer massey]

A few more castings
Valve guide
Ecebtric and strap
D VALVE
CRANK SIDE BEARING CAP
Seems I forgot to take a picture of the bearing cap

 

[sawyer massey]

Bit more finished ......The valve guide took way longer then I thought it would lol

 

[sawyer massey]

Some castings for the second engine
And the progress on the first

 

[sawyer massey]

Poured a 3 cylinder lost some sand but usable
And some more work on the connecting rod

 

[johnmcc69]

That's looking great!

John

 

[sawyer massey]

Connecting rod ......done finely lol

 

[sawyer massey]

Back to pattern making ........still another 12 hours to finish I think
Bondi and sanding ...so much fun lol
It 11.75 in diameter and 3.25 thick

 

[sawyer massey]

Hope to cast it this weekend hope it pulls from the sand clean

 

[sawyer massey]

Comes out clean
Raining here .......might have to weight

 

[sawyer massey]

Comes out clean
Raining here .......might have to weight

S