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Derr boiler-information please
Posted by: Nigel Westwood (IP Logged)
Date: October 03, 2004 09:28PM
<HTML>I see that the Modelworks Locomobile replica is to be fitted with a Derr or Winslow boiler rather than the standard firetube.
My only knowledge of this boiler is from a picture I saw ages ago. It seems to be a collection of watertube grids in a rectangular casing.
Can anyone kindly give me a brief description and tell me:
a) how does it compare weight for weight/size for size with an equivalent Locomobile/Stanley firetube in terms of steam output?
b) Is it any good?
I imagine it would be a quicker steam raiser but lack the reserve capacity owing to less water content.</HTML>
My only knowledge of this boiler is from a picture I saw ages ago. It seems to be a collection of watertube grids in a rectangular casing.
Can anyone kindly give me a brief description and tell me:
a) how does it compare weight for weight/size for size with an equivalent Locomobile/Stanley firetube in terms of steam output?
b) Is it any good?
I imagine it would be a quicker steam raiser but lack the reserve capacity owing to less water content.</HTML>
Re: Derr boiler-information please
Posted by: Rolly (IP Logged)
Date: October 03, 2004 10:35PM
<HTML>The Derr boiler as used in the Stanley, as a replacement boiler was comprised of ten grids with each grid having ten tubes at 10 degrees. There was a space just above the second tube from the burner for the superheater comprised of sixty feet of three-eights pipe. The boiler was bit heaver then a standard 18” high boiler but in my opinion is a far better boiler.
You can read about it in the book the Modern Steam Car by Floyd Clymer
Rolly</HTML>
You can read about it in the book the Modern Steam Car by Floyd Clymer
Rolly</HTML>
Re: Derr boiler-information please
Posted by: Nigel Westwood (IP Logged)
Date: October 05, 2004 10:10PM
<HTML>Thanks for the info.
It sounds like a distant relative of the Babcock & Wilcox.
Nigel</HTML>
It sounds like a distant relative of the Babcock & Wilcox.
Nigel</HTML>
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