Hello i purchased a will hobby 81" cub arf and it isn't marked for center line or thrust line for engine mounting, no instructions or plans for locating where to mount.
any help would be great Ive searched all over the net and cant find anything of any benefits to me for locating centerline. all help would be greatly appreciated.

Thanks


Big-Mo

Use the center of the prop outlet of the cowl as your C/L

thats good except the cowl is solid in front. there is a hole in the firewall for the fuel tank and it looks like that is split equal horizontal and vertical to get thrust lines and centerlines.
Sometimes ARF's suck.

anyway. engine height is the big thing i was worrying about as it has to set off the the right 3/16 to get left torque and set center on vertical.

thanks for the input.

Big-Mo