Noise and acceleration tests on Midas and Winnebago dual-fuel (gasoline, propane) motor homes are described. A dashboard toggle switch or knob is used to switch from one fuel to the other. Although there was no audible difference between operation on gasoline or propane, there were numerous backfires when switching fuels (related to incomplete burning of gasoline). Propane performance was significantly slower in timed acceleration runs. The Winnebago (with a Dodge 440 cu. in. V8) averaged 24.2 sec. from a standing start to 60 mph on gasoline and 27.7 sec. on propane. The Midas (with a Chevrolet 454 cu. in. V8) averaged 18.8 sec. on gasoline and 21.8 sec. on propane. This apparent slowness was not noticeable in standard driving situations. Propane fuel economy is poorer than that of gasoline (about 8% fewer Btu), but propane is usually priced lower, in some locations as little as 70 cents/gal. There are about 25,000 propane outlets in the U.S. One difficulty encountered in filling the motor home's propane cylinders was dealers' lack of fuel meters. Winnebago charges from $558 to $1200 for dual-fuel systems, and Midas' price is about $1200.

  • Availability:
  • Corporate Authors:

    Times Mirror Magazines, Incorporated

    380 Madison Avenue
    New York, NY  United States  10017
  • Authors:
    • Shuldiner, H
  • Publication Date: 1980-6

Media Info

  • Features: References;
  • Pagination: 3 p.
  • Serial:
    • Popular Science
    • Volume: 216
    • Issue Number: 6
    • Publisher: Times Mirror Magazines, Incorporated
    • ISSN: 0161-7370

Subject/Index Terms

Filing Info

  • Accession Number: 00387813
  • Record Type: Publication
  • Source Agency: National Highway Traffic Safety Administration
  • Report/Paper Numbers: HS-029 549
  • Files: HSL, USDOT
  • Created Date: Aug 30 1984 12:00AM