- Created: Friday, 11 December 2009 18:37
A diesel-powered Type A motorhome that offers good fuel economy, outstanding torque and a quiet V-8 engine.
These are among the benefits that Workhorse is touting for its W20D/22D front-engine diesel chassis paired with the MaxxForce 7 engine.
Independent tests at Bosch Proving Grounds in South Bend, Ind., had this chassis-engine matchup achieving up to 13.2 mpg. The tests were conducted with a 32-foot Four Winds Serrano coach body and loaded to the maximum GVWR of 20,500 pounds.
The latest version of the MaxxForce 7, V-8 generates 230 horsepower and 620 pound-feet of torque.
Tony Monda, Workhorse RV vice president of marketing. said Workhorse’s proprietary RV consumer research indicates that Type A potential buyers still want power and performance but are also demanding better fuel economy. “This high volume, rugged mid-range diesel engine is the heart of many International medium duty trucks,” he said. “Coupled with the six speed Allison transmission, our W20D and W22D front engine diesel platforms do not sacrifice power and performance in order to achieve better fuel economy.”
Reduced noise and vibrations are key to the MaxxForce 7’s front-engine application. The noise level measured at 68.9 dBA in a low-idle test. A high-pressure common rail fuel system, piezo actuated fuel injectors, and a block and head design with a single-piece nodular iron bedplate are among the features that contribute to the engine’s low noise level.
The Serrano coach from Four Winds International exclusively uses the W20D chassis for both its 31Z single slideout and 31V double slideout models. Jon Krider, Four Winds director of marketing, said these models are attracting customers who traditionally look at diesel pushers and longer coaches. “These customers are finding many features with the coach and chassis that they like, starting with things like storage and the whole aerodynamic look and contemporary feel of the coach. So instead of spending $200,000 to $300,000 for a bigger coach, they can get a lot of what they want at a much lower price point.”
Regarding the W20D and Serrano matchup, Krider said, “Retail customers comment on how quiet the cockpit is for having a diesel engine right under their feet. We get a lot of comments about just how well the coach drives because of the 50-degree turning radius and being able turn a short coach around in a tight area. And we get many good comments about the overall stability of the coach moving down the road.”