super heaters

super heaters

This topic has 25 replies, 18 voices, and was last updated 20 April 2019 at 14:04 by Richard Williams 10.

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20 April 2019 at 14:04 #405794
Richard Williams 10
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@richardwilliams10
Another mystery of the super heater, would appear to be the absence of any 'rule of thumb' regarding the size of the super heater tubes, and number required. I am repairing a 5 inch Black Five and have found 4 stainless tubes with an internal diameter of around 3/32, is not adequate – the loco simply wont pull loads. Looking at M Evans books, I see he shows drawings with tubes as large as 7/32 OD.

Any ideas?
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