- Joined
- Mar 1, 2010
- Messages
- 866
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An eventful weekend. During the week the first sections of the new track had been delivered after being galvanized. Saturday morning I was in a small working party installing the six sections
They look pretty smart, its only 36 meters at the moment but gives a clue what its going to look like when its all done. I can't wait to get running on it.
Also arriving during the week were some #15 jets from Polly Model Eng. This was to replace the #5 jet I had been using. The #5 allowed allowed me to raise steam but there wasn't enough heat to get to full pressure. Theoretically on propane a #5 jets at 30psi gives 4,160 BTU/hr and #15 jet at 10psi gives 7,355BTU/hr (here http://ronreil.abana.org/BTU_Calculator.xls
Using the #15 jet the safety was blowing in less than 5 mins from cold. Conclusion, the burner I presented in the previous posts with a #15 jet and propane at 10psi is adequate to run this loco. If you need more heat try a bit more gas pressure. You'll need to use an external blower although with care its possible to use a lower pressure bring it up to heat slowly get some pressure and get the loco blower going, then slowly bring up the gas pressure. An external blower is quicker.
With this now working it meant I was in a position to do the boiler accumulator test. Running hard on the safety valve and no increase in pressure. That worked fine so I arranged to meet the boiler inspector for the boiler test.
That went well and now I have a certified boiler!!!!
So what next.....................
Am I a happy chappy? ;D ;D ;D
Pete
They look pretty smart, its only 36 meters at the moment but gives a clue what its going to look like when its all done. I can't wait to get running on it.
Also arriving during the week were some #15 jets from Polly Model Eng. This was to replace the #5 jet I had been using. The #5 allowed allowed me to raise steam but there wasn't enough heat to get to full pressure. Theoretically on propane a #5 jets at 30psi gives 4,160 BTU/hr and #15 jet at 10psi gives 7,355BTU/hr (here http://ronreil.abana.org/BTU_Calculator.xls
Using the #15 jet the safety was blowing in less than 5 mins from cold. Conclusion, the burner I presented in the previous posts with a #15 jet and propane at 10psi is adequate to run this loco. If you need more heat try a bit more gas pressure. You'll need to use an external blower although with care its possible to use a lower pressure bring it up to heat slowly get some pressure and get the loco blower going, then slowly bring up the gas pressure. An external blower is quicker.
With this now working it meant I was in a position to do the boiler accumulator test. Running hard on the safety valve and no increase in pressure. That worked fine so I arranged to meet the boiler inspector for the boiler test.
That went well and now I have a certified boiler!!!!
So what next.....................
Am I a happy chappy? ;D ;D ;D
Pete