dhc8guru
Heliman
Location: Texas
| I am building mine and have found a couple of useful tips to pass on.
1.
On page 11 they have you install the tail pinion assy into the frame. Skip this until you come to assembling the the rest of the tail. Assemble driveshaft into the pinion and then install the driveshaft into the boom then install the completed tail assembly. The only reason I suggest this is because the driveshaft is a tight fit into the drive dog and its difficult to install with the pinion assy installed on the frame. Also they tell you to use green locktight to keep the tail driveshaft intermediate bearing in place..I advise using a small drop of CA instead. It can be removed later using CA disolver if you need to replace the bearing. I tried High strength thread locker and it doesn't hold the bearing once you try to install it in the tail boom. Since the offset of the bearing on the shaft is critical to avoid harmonic vibration, threadlocker will breakdown and flake away possably allowing the bearing to move internally. This may not be likely but I don't want to be the one to find out.
2. Pay close attention to the screw sizes -8, -10 and -12 are all very similar looking so use the screw charts to verify the size before installing.
3. You will definitely need a ball link sizer and install plyers.
JR ball links are a real tight fit and this is probably why people are breaking the washout ball links.
4. Keep the three bearing blocks loose until you are installing the mainshaft, if you don't you may find the shaft doesn't line up with the blocks tightened down.
5. There is no clarity on page 9 as to which end to install first on the autorotation assembly. If you get this backwards, the oneway bearing will work opposite of normal. The end with the larger radius and machined sides on the end faces up....or atleast this appears to be correct, after I got everything together it appears to function properly.
6. Pay close attention to the all area's relating to lever arm and head assembly... Like on page 14 they give lever arm positions for both 120° and 140° eCCPM mixing and the arms have two different spacers depending on which head geometry you are using.
7. Someone else made mention of paying attention to which side the frames are to be assembled..this proved to be a very useful tip.
8. On page 20 I couldn't tell whether the frame spacer on the rear landing skid support went with the front hole or back and I was informed in a prior posting that it goes in the back hole.
As I move on through the rest of the build, I will post anything else I run into. |
