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Carb Heat Box Ideas

Colorado-Cub

MEMBER
Buena Vista, CO
The simplicity of some tube designs for dual source air intakes (carb heat source on one side, air filter source on the other, controlled by flapper valve) is leading me to ask:

Anyone come across any clever ideas for dual sourced air intake outside the standard certified box? (or outside a dual-sided flapper valve controlled tube?)

I understand there are only so many ways we could get two sources of air into a single carb body, but there has to have been some experimentation in this area by someone?
 
Also, anyone ever see any data for velocity-stack usage in our low-RPM high-volume applications? (I know that would increase carb ice potential)
 
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