So was running my 46la last night and ran a tank full (4oz) and noticed that the spinner was HOT after. It is aluminium. I had never noticed this before on other engines. It seemed to run OK It has a R.S. needle valve and backplate and it was the first run with the new parts. Is this normal? or do I need to check for? Thanks Jack
It's not that unusual. It is usually hotter a few minutes after a run than it is while it's running or immediately after since the heat soaks back. But there is a lot of power being dissipated in the plain bearing and that heat has to go somewhere. It may be too tight or you may be using more or thicker oil than necessary, but as long as it runs OK I wouldn't worry about it.
On my first ever 40VF flight, we flew the thing, and it was great. We marvelled over how loose the engine was after it quit and right after the flight, and how flippy it was (compared to crappy stone age ST46s). Spinner was cool to the touch. Fueled it up for the next flight, started to choke it, and touched the spinner and damn near burned the skin off my hand.
Brett
Topic: Hot spinner (Read 1256 times)