MotorOil
RC Newbie
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I've had my Revo 3.3 for about four weeks now and the stock muffler has broken twice, each time after about two weeks (after running through about 2 gallons a fuel -- 1 gallon every two weeks).
This has happened both times at the same spot -- where the pipe attaches to the manifold block (i.e. the part with the two screw holes that attaches the whole assembly to the cylinder.
It looks like a heat and metal fatigue break. The truck has never been crashed. Each time when it broke, the truck was being driven straight and level at low speed. The first time was while it was being driven on grass, the second time, just this afternoon, while being driven down my driveway at about 5 mph, tops. The engine just started making a lot of noise. Upon a closer look, I found that the pipe was detached (again) from the metal block to which it is supposed to be attached.
Has anyone else had this problem? The first time I went into the hobby shop, they called Traxxas and I got a free part. They said that if it happens again, I will have to eat it. That seems ridiculous, since it is an expensive part and I don't think I should have to pay for a new part every couple weeks because of what seems to be their manufacturing/engineering blunder. A muffler pipe should not be breaking so frequently and so easily, especially when the truck has never been crashed or been jarred hard enough to cause such a break.
P.S. This is not my first truck. My previous truck was a DuraTrax, which was crashed head-on into a brick wall so hard it looked like a pretzel afterwards; and, even though it was the original stock muffler on a two-year-old truck, the muffler pipe on that truck held together and did not break on that crash.
This has happened both times at the same spot -- where the pipe attaches to the manifold block (i.e. the part with the two screw holes that attaches the whole assembly to the cylinder.
It looks like a heat and metal fatigue break. The truck has never been crashed. Each time when it broke, the truck was being driven straight and level at low speed. The first time was while it was being driven on grass, the second time, just this afternoon, while being driven down my driveway at about 5 mph, tops. The engine just started making a lot of noise. Upon a closer look, I found that the pipe was detached (again) from the metal block to which it is supposed to be attached.
Has anyone else had this problem? The first time I went into the hobby shop, they called Traxxas and I got a free part. They said that if it happens again, I will have to eat it. That seems ridiculous, since it is an expensive part and I don't think I should have to pay for a new part every couple weeks because of what seems to be their manufacturing/engineering blunder. A muffler pipe should not be breaking so frequently and so easily, especially when the truck has never been crashed or been jarred hard enough to cause such a break.
P.S. This is not my first truck. My previous truck was a DuraTrax, which was crashed head-on into a brick wall so hard it looked like a pretzel afterwards; and, even though it was the original stock muffler on a two-year-old truck, the muffler pipe on that truck held together and did not break on that crash.