Home › Forum › Ask A Member › Johnson 3HP JW-17 Compression woes › Re: Johnson 3HP JW-17 Compression woes
July 20, 2018 at 4:39 pm
#79777
The point is that there is a certain number of cubic inches of volume within the hose. That number of cubic inches is additional to the number of cubic inches within the cylinder. So if you have a honking big cylinder, the cubic inches within the hose is much smaller than within the cylinder, percentage-wise, and doesn’t affect the reading as much as if it were a small cylinder. The percentage can be quite large on those little 3hp cyinders.
Putting the check valve at the cylinder, eliminates the problem.