RCU Forums - View Single Post - trust the thrust line?
View Single Post
Old 01-28-2013, 09:43 PM
  #1  
sparky4lawndart
My Feedback: (10)
 
sparky4lawndart's Avatar
 
Join Date: Jun 2002
Location: Ladera Ranch, CA
Posts: 678
Likes: 0
Received 0 Likes on 0 Posts
Default trust the thrust line?

Hello all... I have just started building (assembling) the .60 size Hangar 9 P-47. I'm following the recommendations in the build thread for that plane here on RCU but I've run into an issue...

The ARF has a pre drilled firewall for their aluminum mount. As I do as I'm told I've glassed the inside of the firewall and I'm getting ready to re-drill the firewall so the YS 120 will be fully inverted instead of the 120degree orientation the ARF had.

Here's the rub... although the build thread talks about re-inforcing, re-drilling for 180 degree inversion of the motor, it does not say whether to believe the drawn lines on the firewall for thrust line...

the firewall is 6 3/4 inches wide at its widest point but the thrust line is drawn at 3 1/4 inches from the left side (fuse is inverted and you're looking at the firewall). should I trust that drawn line or should put the prop shaft at the point on the firewall in the middle of its widest point and split down the middle (vertically)?
Attached Thumbnails Click image for larger version

Name:	Vt57065.jpg
Views:	18
Size:	133.1 KB
ID:	1845427