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Old 10-28-2013, 04:16 PM   #1
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Default Nitro motor problem need help

I have a hpi motor .15 and I recently started running it again and it seems like the fly gear is really rough and when I tired starting it up on full brake the servo didn't move at all but the motor ran away on me I stopped the fly wheel but now seems like SOMTHING is stuck and grinding inside and the fly wheel won't turn
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Old 10-28-2013, 04:20 PM   #2
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I have a hpi motor .15 and I recently started running it again and it seems like the fly gear is really rough and when I tired starting it up on full brake the servo didn't move at all but the motor ran away on me I stopped the fly wheel but now seems like SOMTHING is stuck and grinding inside and the fly wheel won't turn
Check your clutch and clutch bearings. Grinding in the flywheel area is most likely a clutch problem.
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Old 10-28-2013, 05:08 PM   #3
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Check your clutch and clutch bearings. Grinding in the flywheel area is most likely a clutch problem.
it isnt grinding anymore it just runs away now right when i start it up
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Old 10-28-2013, 05:27 PM   #4
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Sounds like a bad servo or your linkage has come loose somewhere. Check to make sure the rod that connects to the carburetor is still connected.
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Old 10-28-2013, 06:53 PM   #5
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Charge the battery. If Steering works throttle servo bad. Since the engine hasn't been started a while, Remove engine and do maintenance on the clutch brgs & shoes.
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Old 10-29-2013, 03:25 AM   #6
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Quote:
Originally Posted by xTotalghost View Post
it isnt grinding anymore it just runs away now right when i start it up
Runs away? Do you mean the WHEELS KEEP SPINNING?

If so, tell us more about your clutch.
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Old 10-29-2013, 06:02 AM   #7
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there are some problems on its engine.
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Old 10-31-2013, 08:51 PM   #8
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Make sure your batteries are fully charged. Turn on all your electronics and "0" or "center" your throttle trim on your remote. verify that the linkage connecting your servo to your carb is properly attached. remove your air filter and look down the hole that you just uncovered (the carb throat). There should be a small opening. Apply throttle on your remote and check that the tiny opening gets larger. release the trigger and check that the hole gets smaller.
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Old 10-31-2013, 08:57 PM   #9
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If the opening doesnt get larger and smaller smoothly and consistently: check that your throttle servo is moving when you pull and release the trigger. If the servo is not moving, try swapping the throttle and steering servo. has the problem moved to your steering now? if so, servo was probably bad so remove and replace the servo
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Old 11-01-2013, 05:11 AM   #10
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Didnt realize you said your servo didnt move. DOH! well swap the seering and throttle servos. if your steering was fine before you swapped them and the problem doesnt change, it's either a receiver or transmitter problem
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