Chubby Cruising Speed

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lobsterman
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Posts: 634
Joined: Tue. Sep. 28, 2010 7:51 am
Hand Fed Coal Stove: Chubby, 1980 Fully restored by Larry Trainer
Hand Fed Coal Furnace: Chubby Jr, early model with removable grates
Location: Cape Cod

Post Thu. Nov. 24, 2016 9:55 pm

I love it that the Chubby with its air open a sliver, MPD closed, and a full load of coal always settles into its sweet spot at around 350 degrees. And stays there. Got to love the Chubby.

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Lightning
Member
Posts: 8426
Joined: Wed. Nov. 16, 2011 9:51 am
Hand Fed Coal Furnace: Overmodified/Bored out Clayton 1537
Coal Size/Type: Anthracite/Awesome Size
Location: Olean, NY

Post Thu. Nov. 24, 2016 11:37 pm

That is why coal is such a beautiful fuel. With the same draft and primary/secondary air settings you get the same predictable heat output. Every time. Love it.

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lobsterman
Member
Posts: 634
Joined: Tue. Sep. 28, 2010 7:51 am
Hand Fed Coal Stove: Chubby, 1980 Fully restored by Larry Trainer
Hand Fed Coal Furnace: Chubby Jr, early model with removable grates
Location: Cape Cod

Post Fri. Nov. 25, 2016 8:33 am

Agreed, what I just described is a characteristic of coal, not the stove. But the simplicity of the Chubby still amazes me. Having a great draft in my windy location, the steady state of my MPD is always fully closed. The secondary air is closed. This means it is a 1-lever stove for heat adjustment. The primary air consists of a total of 4 square inches. Close it up and you can hold the fire for a very long time, 16-24 hours. Open it up and the stove will hit 800-900 degrees; won't burn the house down but way too hot for steady operation. About 1/8 open is my "sweet spot" for steady running, increased perhaps to 1/4 open for extremely cold days.
Last edited by lobsterman on Fri. Nov. 25, 2016 9:49 am, edited 1 time in total.

User avatar
Lightning
Member
Posts: 8426
Joined: Wed. Nov. 16, 2011 9:51 am
Hand Fed Coal Furnace: Overmodified/Bored out Clayton 1537
Coal Size/Type: Anthracite/Awesome Size
Location: Olean, NY

Post Fri. Nov. 25, 2016 8:51 am

At some point in the future when I have a Stoker unit in the basement, I'd like to have a small stove in the living room. A chubby is a fair contender for that position. :)

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