Trying to quiet this thing down. Runs about 90 db at idle in the cab.
Pump under floorboard.
Wrapped with 2+ layers of 80 mil butyl foil covered self adhesive "sound deadener". Didn't do much.
Made a "tester " for different types of material. Foam types didn't do well. Mass loaded vinyl sheet and plain old rubber stall mat did best.
The mass loaded stuff I bought was 1/4" thick and fairly stiff, about $6 sq ft for the 2 lb. stuff. ;the stall mat is cheap but heavy, about 4 lb sq ft. Baseline shown below is 84 db. 2 layers Mass loaded vinyl gave 74.8 db with the same weight as 3/4 inch stall mat which did better at 71.8. Stall mat is also much cheaper.
Cutting and fitting the mats to fit between and around things.
Ended up here.
And then started crying
Pump under floorboard.
Wrapped with 2+ layers of 80 mil butyl foil covered self adhesive "sound deadener". Didn't do much.
Made a "tester " for different types of material. Foam types didn't do well. Mass loaded vinyl sheet and plain old rubber stall mat did best.
The mass loaded stuff I bought was 1/4" thick and fairly stiff, about $6 sq ft for the 2 lb. stuff. ;the stall mat is cheap but heavy, about 4 lb sq ft. Baseline shown below is 84 db. 2 layers Mass loaded vinyl gave 74.8 db with the same weight as 3/4 inch stall mat which did better at 71.8. Stall mat is also much cheaper.
Cutting and fitting the mats to fit between and around things.
Ended up here.
And then started crying