Thanks for the reply Richard, sounds like there is some commonality to this issue. I may try a dynamic balance just to see what happens. I assume it can be undone...
Craig ----- Original Message ---- From: Richard Todd To: [email protected]; cpetemn <[EMAIL PROTECTED]> Sent: Wednesday, May 21, 2008 11:03:01 PM Subject: Re: [ercoupe-tech] Engine/Prop Vibtation Mine Too! Although when I first bought the plane it had excessive vibration between 2300-2550. Being that I'm always using the upper RPM range, it was very annoying. So I had the Dynamic Balance done. NOW my vibe is in the 2100-2300 range. Richard --- On Mon, 5/19/08, cpetemn <[EMAIL PROTECTED] com> wrote: From: cpetemn <[EMAIL PROTECTED] com> Subject: [ercoupe-tech] Engine/Prop Vibtation To: ercoupe-tech@ yahoogroups. com Date: Monday, May 19, 2008, 7:09 PM I have noted on my recently acquired 415C, that the C-85 has a moderate amount of vibration between 2100-2300 RPM. We re-positioned the prop to the proper position on the hub, but no difference. The motor mounts are good and there doesn't seem to be a lot of filing that would put the prop out of balance. The next step would be dynamic balancing. But, is there any known inherent vibration in the C-85's in that rpm range? Any other thoughts? Craig N87018
