when i drove the busses down hill with AT545's i did like others do.. I dropped my speed down at the crest of the hill. and pushed the 545 into 3rd or 2nd gear.. and did the pulkse and glide method to the brakes.. drop 5 MPH, let it go up 5, stab it down 5.. and well slow enough that I could speed up if i needed to.. in the red bus I kicked the engine fan and the air-conditioner on to give more resistance,
before you laugh.. the engine fan is good for 10-15 HP.. and the A/C is good for 15...
-Christopher
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