RICHW
Senior Heliman
Location: Cupertino, CA
| I thought I would also be able to break it in on the heli but I was having a heck of a time setting the mixture. It would change drastically by the day. Usually the engine would sag just as I start a climb out. I would bring it back and richen the main needle some more (engine was extremely hot) and then it would act OK. It would be too late to go the field so I would put it away. Next day I think I am ready to go to the field and darned if it doesn't still have the same problem. I have changed plugs (many times), changed tanks and fuel line, removed the carb and looked for crud. Muffler is OK. After three weeks of this frustration I totally tore this heli apart and it has now become an organ doner for my other three. I set the engine (an ST34 ringed ABC) on a test bench and it runs pretty good but is noticeably difficult to get into four cycle mode. Needle is out so far I don't even count the turns. I was using the only prop I could find which was an 8x 6-1/2. I thought that might be a little small. Compressioin is improving, so it may be needing this bench run.
thanks,
Richw
If you take something apart and put it together, enough times, eventually you will have two of them. |
-.jpg)
I used a 10x6 on both a 32 and a 36 with good results.
