Skip to content

Cold. Really cold.

December 20, 2014

Picked up the 120v fans from the post office on Tuesday, and epoxied them to the abs pipe couplers. The joint is a  good and solid joint. Yesterday I went down to the yard, and spoke to the Commodore. He says there will be no problem with my plan to leave the heaters on overnight, and all I need to do is let him know when so he can tell the officer of the day. I plan on marking my power cords and leaving a note in the OOD log anyway just in case.

My schedule for the next couple of weeks is a scream so no boat stuff unless it can be done at home.  I am working Xmas, Boxing Day and New Years day, Time and a half plus a lieu day. Been doing that for about the last 13 years of so, let the younger guys with family and kids have it off. I bank the days  and use them for boat stuff. It should be dead, usually is. But they say there is a “Santabomb” coming. Bad weather. So what do you figure the chances are of the great Canadian communications net throwing a hissy fit? Pretty good if you ask me. Last year we had the Ice Storm, power out all over the place for a week or more. This year its the “Santabomb”. Go figure. Anyway I’m taking in a few videos (Scrooged, It’s a wonderful life, and Wind), my novel, (trying to get chapter 29 in the can) and I have a list of things I need to buy at the boat show, so I’ll be doing some online research. Keeping fingers and toes crossed that the “Santabomb” fizzles.

While I was down at the yard, I got aboard, over the ice covered deck, managed to untie the iced up lines holding the cover down and got inside. I rechecked the length for the ventilator tubes, measured and sketched the transmission coupler, pulled the shaft coupler, did some clean up, froze my buns off, rechecked and remeasured the hatch opening for a new sill and hatch board, then closed her up again and headed over to the tool shop. Got the ABS tubes cut to length, had to leave the sill and  hatch board until later as Gerry had just finished painting the tractor plow. The table saw is too close, and it would be bad form to leave sawdust all over the new paint job. That was about it, pretty dark out by then so I headed off to do some shopping and then home.  Chinese for supper. Ummmmm.

One of the things that needs doing is to align the engine and shaft. To that end, I need to make up tooling to allow me to mount dial indicators to both the shaft coupling and the transmission coupling. The one problem is the lack of space around the coupler. While there is no chance of any whipping of the shaft or coupling, there by hitting the hull, there is not much space to work around the junction between the two. At best there is 1.5 inches of clearance on the port side of the shaft tunnel as the shaft rotates. Port upper, and all around the starboard side there is bags of room but that minimum clearance governs all. So my regular dial indicator will have to be snugged up against the shaft coupler, barely clearing the circumference and projecting ahead to the disk on the transmission coupler.  I am looking at buying a miniature indicator that may fit between two of the fingers on the transmission coupler. If it works out then the clearance will be plenty.

The shaft coupling indicator will measure angularity between the two, while the transmission indicator will measure concentricity, IE whether the shafts are in line up/down, left or right.  While the flex joint will take up a certain amount of angularity, it is pretty critical to have the concentricity as perfect as possible. Anyway its all still in the planning stage.

NG-Campaign-banner-(in)correct-Alignment.jpg

A shows concentricity of the shafts, B shows angularity. C show a proper setup

mechanical-coupling-alignment-300x221

Here you see the dials, one measures the concentricity (rim) while the other measures the angularity (face) as the coupling faces turn relative to each other. Either one can be stationary while the other one turns. In my case, the concentricity has to be measured from the transmission side as the shaft coupling is known to be round and the transmission couple is known to have no slop in its movement. Bolting a flat plate to the face of the transmission coupling will allow the face measurements from the shaft side.

Til next time, TTFN.

From → Meat n Taters

Leave a Comment

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s

%d bloggers like this: