Happy to report all jobs now completed.CG with battery packs just behind the firewall is spot on the 7" from the LE as per the manual. Hopefully H9 have it correct for once.
Ran the engine and it runs well though the 20x8 may be too much prop for the G-38. Will see how it performs in the air.
The engine runs very queit with the BBI muffler and my isolation mount sysem works exceedingly well. There is hardly any vibration back through the airframe. So much for the naysayers [img][/img]
You tube link to the engine run. There are some other of my H9 1/3 Pawnee engine run and test flight as well. I managed to get bitten by the prop trying to start it, luck I had a thick welding glove on. Even then I have badly bruised right middle finer and its bruised and d amn sore. Electric starter only from now on.
Also learnt something about walbro type carbys and the diaphram. The nipple on the diaphram has to hook into the form of the neddle vale arm or you will get over fuel issues and dripping from the carb.
