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50cc missing

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Old 01-11-2013, 11:36 AM
  #1
flybyme
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Default 50cc missing

What is a common cause of a 50cc gas engine missing...sputtering after a crash. Mixture, iginiton, pickup?
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Old 01-11-2013, 11:57 AM
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Default RE: 50cc missing

Do the simple first- replace the spark plug.
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Old 01-11-2013, 12:15 PM
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Default RE: 50cc missing

second, replace the ignition.
third, replace the pick up.
Dan.
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Old 01-11-2013, 01:54 PM
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Checklst
 
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Default RE: 50cc missing

Does the prop hub have a key way on the crank..................prop hitting the ground in a crash could move hub if a key is what holds it to the crank starts to shear off.....would change the trimming if the key moved.
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Old 01-11-2013, 02:26 PM
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Default RE: 50cc missing

Too early ignition timing also causes occasional misses.
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Old 01-12-2013, 12:25 AM
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Default RE: 50cc missing

Thanks for the replies, will address them all.
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Old 01-12-2013, 05:49 AM
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Default RE: 50cc missing

RE 50cc missing yet? Just keep looking & you will find it.
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Old 01-19-2013, 07:43 PM
  #8
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Default RE: 50cc missing

Knocking down a good spark, where do I go next, the woodruff key, or carb....?
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Old 01-20-2013, 05:28 AM
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Default RE: 50cc missing

The spark plug boots will often leak when under compression only. Spark looks fine when not installed? If it was damaged at all in your accident, I'd replace the ignition if you have one you can swap into it. If that works, order out a new boot and just replace that?
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Old 01-20-2013, 11:08 AM
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Default RE: 50cc missing

I have seen the same symptoms on a club mate's plane where the spark plug cap wasn't properly on the plug.
He had loosened up the spring clup on the boot too much so you could see the cap moving up and down on the plug
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Old 01-20-2013, 11:33 AM
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Default RE: 50cc missing


Quote:
ORIGINAL: captinjohn

RE 50cc missing yet? Just keep looking & you will find it.
LOL, A club mate was also complaining about his RCGF 55 missing in flight. So I said I'd take a look at it.
So I walked over to the plane and paced around it in circles 2 closckwise and once counterclockwise and exclaimed EUREKA!!! and walked back.

After I sat down he looked at me and Said: I thought you were going to look at my engine?

I replied: I did, but not just that, you'll be pleased to know I found it under the cowl....

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Old 01-21-2013, 11:05 PM
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Default RE: 50cc missing


Quote:
ORIGINAL: TimBle


Quote:
ORIGINAL: captinjohn

RE 50cc missing yet? Just keep looking & you will find it.[img][/img]
LOL, A club mate was also complaining about his RCGF 55 missing in flight. So I said I'd take a look at it.
So I walked over to the plane and paced around it in circles 2 closckwise and once counterclockwise and exclaimed EUREKA!!! and walked back.

After I sat down he looked at me and Said: I thought you were going to look at my engine?

I replied: I did, but not just that, you'll be pleased to know I found it under the cowl....

O-Boy LOL
BCCHI
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