First Gear
 

1/64 scale Mack R Model Sleeper Cab

December 1, 2017

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In 1966, Mack Trucks, Inc. introduced the infamous R-Model series as their new conventional line of highway trucks. The R-series was an upgrade from previous Mack conventional cabs in that it featured a tall, almost vertical, two-piece wrap-around windshield and large side windows providing drivers with much improved visibility; a one-piece fiber glass hood and fender unit which tilted forward to provide easier access to the engine; double-wall, welded sheet metal cab construction; and improved instrument panel design. The tall cab gave the Mack R-Model the appearance of a much larger truck, when in reality it was the same size as its predecessor, the B-Model Mack.

Available engines in the R-Model included both gas and diesel powered, ranging from 140 hp up to 255 hp. In addition, by the end of 1966, after seven years of development, Mack Trucks introduced the revolutionary Maxidyne diesel engine that had the ability to offer constant horsepower. The Maxidyne had a peak ranting of 237 hp at 1700 rpms resulting in significant benefits for both the truck and the driver. Such benefits included increased fuel savings, decreased effort in shifting gears, and lower transmission wear-and-tear.

With the introduction of the Maxidyne engine offering maximum horsepower over a longer rpm range, a new 5-speed transmission was also developed by Mack to complement this new engine. This Maxitorque transmission featured a triple countershaft which enabled it to be shortened considerably, as well as having the advantage of being lightweight.

The Mack R-Model had superb engineering details, which allowed drivers to "customize" their models to meet their needs. Throughout this R-series production history, Mack continued to upgrade and update the mechanical components of the truck. For this reason, the R-Model remained in production for an amazing forty years! And just as Mack Trucks allowed their customers to customize their models to meed their needs, First Gear is also pleased to offer additional options to expand our 1/64 scale Mack R-Model product line.

We are pleased to release a new version of our 1/64 scale Mack R-Model to now include a longer 220" chassis and 60" flattop sleeper bunk. In addition tot he sleeper bunk, other model options are also available to potentially produce a wide array of models to meet a variety of fleet applications. Such options include round fuel tanks, quarter or half fenders, and dual or single exhaust pipes that can be either straight or curved.

Our first releases of the new 1/64 scale Mack R-Model Sleeper Cab are two tractor only options, along with a version paired with a tank trailer and other paired with a 53' trailer. You won't want to miss these and we trust at least one, if not all, of these new releases will be added to your collection soon!

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