Wider shopvac hose = less suction?

Smaller profile of hose will give you better suction. Vacuum moves certain volume of air. Divide that by (bigger) size of area and you will get smaller suction just like you would be dividing pressure over same sized area (suction is negative pressure). Therefore, reducing size of area increases pressure/suction.
 
Danforz said:
So then maybe a thicker hose with the clay nozzle head is the best of both worlds?
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Not IMHO. In my experience sudden expansion in profile will be causing loss of "power".
 
Danforz said:
Jeez. So then whats the ideal nozzle for getting into tight areas and such?
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Try for start to get smallest profile hose you can get that will not be easy to clog with average "dirt" you will be picking up and then get nozzle that will fit it. Only other option is stronger vacuum.
 
Dan, I've been running the Griot's hose for 5+ years on my shopvac. It kicks some serious butt. I've never been in a situation where there wasn't adequate suction even with a dirty filter. Hose ID is probably close to 1 3/4". I can't imagine being without it.



Is it possible the vac you have is "wimpy"?



90505_LG.jpg
 
tom p. said:
Dan, I've been running the Griot's hose for 5+ years on my shopvac. It kicks some serious butt. I've never been in a situation where there wasn't adequate suction even with a dirty filter. Hose ID is probably close to 1 3/4". I can't imagine being without it.



Is it possible the vac you have is "wimpy"?



90505_LG.jpg
Click to expand...



I doubt that, I'm running a 5HP Rigid. I just want to optimize it and also be able to get between tight areas.
 
I run the 2 and something inch hose, and suction has never been a problem for me. I'll take the slight tradeoff in power for the ability to suck almost anything through the hose - oftentimes, I'll run it under a seat and suck in a full pack of gum, pen, tissue paper, whatnot - try doing that with the 1ish inch hose.
 
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