Pure Pulling Power

Diesel News is not quite sure what is going on here, but this Mack is reckoned to be showing “Pure Pulling Power”. Here we have a 1972 Mack Truck, which appears to be performing a wheelie with a load of logs. This Mack has a two stick Spicer 5×4 transmission and a V8 Detroit engine. You don’t have to look at the images, just close the eyes and listen the engine roar.


Here we have something similar, with a heavy haulage unit losing it a bit near the top of the grade as the front wheels leave the ground:


In this example from Sweden, what is going is perhaps a little easier to work out. The load is obviously, heavy and the truck does have pulling power, but there may be a little bit of trickery going on here. The prime mover almost certainly has a sliding turntable, they are very common in Europe. It’s difficult to see any detail on the wheel hubs as they pass by, but it would a good bet the rear axle on the prime mover is a lifting tag. After a bit of practice it would probably be possible to time the pressing of axle lift button to coincide with the power coming in as the accelerator is pressed. Then, hey Presto! A B-double doing wheelies:


this is probably the nearest we can fu=ind to real wheelies in a truck. Theirs is what happens in Canada, where the crazy French Canadians are into drag racing fully loaded B-double trucks. The lifting steer axles are showing us the real thing, ‘Pure Pulling Power’!

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Author: Tim Giles

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