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Been a while since last post as I have been making the fiddly bits to get the engine running.
Finally got it far enough that I could try a test fun as I wanted to know the basic engine was sound. I had managed to get a 2nd hand .60 sized R/C carb off ebay to use as a temp one for testing.
Few issues. Firstly was the compression. When I fitted the cylinder head I realised there was not a whole lot of compression. I really should have addressed that issue then before I went any further. So I had to take the head off and re-lap the valves. ........ I then had loads of 'ploppy-floppy' compression.
Next I could not get the buzz coil working properly to give a strong and reliable spark. Being the impatient sort I dumped that and hogged a temp normal ignition circuit up. (I will address the buzz coil later)
The carb I have is a bit large and once I started to get the thing kicking back at me from hand spinning the flywheels I had a fair idea that it was just a matter of the carb and ignition timing settings to hopefully get the basic engine tested.
As yet I don't have the hit and miss governor fitted as that is one more thing to have an issue with for testing. I again will sort that out later. But for now it's running as a 'normal' !!!! 4 stoke.
Anyways, please forgive the shakey video as I just grabbed the camera and TBH was half expecting to have to stop it jumping off the bench.
Nick
