Forum Discussion

Dimmer's avatar
Dimmer
Explorer
Jan 31, 2022

Freightliner S2RV cab noise reduction

We made a good choice in buying a Jayco Seneca super C on a Freightliner S2RV chassis. As with all class C motor homes, the front engine results in much more cab noise than a pusher.

We added noise attenuating materials to the cab. That effort effectively reduced cab noise from the drive train to a level of a 1 ton pickup truck. We have not been as effective in reducing wind noise.
1. I have used box tape to seal the areas where the doors and body come together to see if door adjustment could reduce the noise. Wind noise did not change. Door adjustment is not a solution.
2. The noise on the passenger side is significantly lower dBA than the driver’s side. The readily apparent differences between the two sides are on the driver’s side: radio antenna and engine air intake.
Do you have any suggestions for me to reduce this wind noise? What body components are typically involved? What have others done to reduce the noise?

2 Replies

  • My Super C Endura had lots of cab wind and other noises. I put Airtabs on rear of MH for handling. I had bought a box of 200 of them off EBAY at a great price. Had about 30 of them left over. I saw this thread in Truck Campers. Where OP put a Air Foil between truck Cab and camper cab. I put a set of Air Tabs on bottom of my cab over. It changed how the air hit cab, windshield and antenna. Made a difference in noise. Biggest change was no bug splattered to windshield.
    I never noticed any fuel saving. But did improve handling with the ones I put on rear of MH.