Question about Electric Eyeware Redcat Racing Volcano EPX PRO Truck 110 Scale Brushless Electric

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My Volcano EPX Pro was purchased rtr. With a fully charged battery, if I punch the throttle wide open, instead of a smooth, quick take off, I get a herky, jerky start. After a couple of seconds its blazing. Cant race like this. Any help would be great. Thanks.

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So I have the same problem with mine, and it's fairly new. It looks like its a combination of two things. One the ESC isn't working properly and needs to be replaced (hopefully the company I bought my truck from will replace, I still haven't heard back from them), and two the gearing seems to be abnormal, the team at my local hobby store recommended a small gear on the motor (the stock is 17 and the buy at the store seemed to think that it was huge) so if you get a small one (15 pinion I think is the terminology) it puts less stress on the motor. The top speed will be reduced apparently but the gearing problem is resolved. Other things they suggested where replacing the metal main diff gear with a plastic one, or lighter material one as well; hope that helps; if the company doesn't replace my esc I am strongly considering buying a new motor/esc combo from the hobby store and hopefully sort out both problems with one purchase.

Posted on Dec 31, 2013

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Posted on Jan 02, 2017

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You may need someone else to help you hold the saw while you make these adjustments. With the throttle wide open, turn the hi speed screw slowly, in increments of 1/4 turn, to the left. It may be just a bit off. The objective here is to turn one way until it sputters or runs a little rough. Then turn it the other way until the engine smooths out. Continue to turn in the same direction until it again runs rough. Then turn back about halfway between those two points.

It should run well at wide open throttle. Place your screwdriver in the low speed adjustment screw and turn to the left, in small 1/4 increments like you did before. The objective here is to adjust to the point where the saw will throttle up quickly and smoothly, and more and more from an idling position, or as close as you can get.

If you find you don't get that, and the ramp up is choppy and unsmooth, adjust in the other direction. Eventually you should get to a point where you have quick response to your throttle. You should get to a point where it runs without being wide open.

If it fires up easily and throttles up smoothly but won't idle, the you need to adjust the idling screw. Adjust it until the chain begins to move on the bar when you let the throttle go. Once you get to the point where it idles with the chain moving, back off the adjustment until the chain just stops moving.

Make sure the air cleaner is clean. You may have to clean the carb with spray carb cleaner while it is running at full throttle. If you do, spray a tiny bit at a time, as it will almost kill the engine.

Finally, after all this work, invest in a new spark plug, even if the one in it isn't that old.

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