HO Scale Cowl Ventilators

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This is partly based on the Standard Pattern Cowl Ventilator as made to Classification Society Rules. The trunk (the smaller tube that goes into the deck) is made to connect to Evergreen tubing. The trunk matches the appropriate size tubing with a small stud that matches the tubing I.D. This way you can make the ventilator any height you desire.

The Boiler Room ventilators were larger than Engine Room ventilators as they (Boiler Room) had a secondary purpose in that they were also used as elevator shafts to lift ash buckets which were used to raise and dump ashes over the side into the dump scows while in harbor, if the steamer is a coal burner.

I have separated the cowl ventilators into N, HO and O scales with the last two sub-divided into Boiler and Engine Room Ventilators. That gives a range of 5 sizes. Use the Line-Drawing to find one that will work in other scales.

Set of 5ea HO Engine Room and Boiler Room Scale Cowl Ventilators. This is based in part on the Standard Pattern Cowl Ventilator as made to Classification Society Rules. TThe trunk (the smaller tube that goes into the deck) is made to connect to Evergreen #224 tubing. The trunk matches the tubing at .125″ dia. and has a small stud .069″ dia. that matches the tubing I.D. This way you can make the ventilator any height you desire.

​see line-drawing for exact measurements for all cowl ventilators

 

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