Chinese Hit and miss engine

[The_Paso_Kid]

Anyone have this engine? I purchased one more than a year ago for my Grandfather. He has had it in and out of the box multiple times and somewhere along the way the rod that activates the exhaust valve fell out and is lost. Just wondering if anyone knows the exact length of it. I had a length of metal rod that I cut down to make a new one but not sure I got the proper length. We have attempted to run the engine but so far have not gotten it going. Any help/advice would be greatly appreciated.

 

[deverett]

Over on the Smokstak forum, there is a long thread on the trials and tribulations of the Chinese hit n miss engine
https://www.smokstak.com/forum/threads/hit-miss-model-from-banggood.183893/
Dave
The Emerald Isle

 

[Smokey Joe]

Anyone have this engine? I purchased one more than a year ago for my Grandfather. He has had it in and out of the box multiple times and somewhere along the way the rod that activates the exhaust valve fell out and is lost. Just wondering if anyone knows the exact length of it. I had a length of metal rod that I cut down to make a new one but not sure I got the proper length. We have attempted to run the engine but so far have not gotten it going. Any help/advice would be greatly appreciated.

The rod should be .114 or 2.9mm diameter and 2.165 or 55mm long. you should have .003 to .006 play between the rod and the rocker arm.
Also ground the engine to the black wire of the battery input. And the electronic ignition is made to run on 3.7 volts. if you go much higher than that you will burn something out. usually the hall effect will go first then the electronic box.

 

[The_Paso_Kid]

Thank you Smokey Joe. I had seen some videos showing the use of only 2 batteries (3 volts). We will give this a try.