The Commando that came in from the Cold.

It is both inlet spindles which get drilled, this allows the oil to cross flow internally.
Mine have been done since before i owned the bike, although it was a few years before I noticed and i have never removed the external line.
If no-one else comes up with an answer i can pull a spindle cover and measure the hole diameter.

mr Comstock has a video about drilling out rocker spindles you can find it on you tube .

KzJonny said:

Now, that said, I do not have, nor can I afford a dial guage to measure run out

Click to expand...

Quick note here. When I was writing this, and considering what I was going to do about the transmission, I was sure this was true, as all the runout gauges I could find were at least $300 and went steeply up in price from there. I've since seen I was looking in the wrong places, and a 'decent' dial gauge can be had from Amazon/HF/Princess Auto for under $50. So, yes, this project is on a limited budget, but things aren't THAT tight yet. Since the acceptable play in the layshaft seems to be at least 0.005" and these inexpensive import dial gauges are meant to be good to 0.001", I think I will have to break from the usual MO and get the cheaper tool. I think it will suffice for the task at hand, and will likely be more accurate than I really need to help set up some of my woodworking shop tools to boot! So, the bearing replacement can get underway sooner than I had hoped.

I will of course, consider all the advice and methods suggested previously by members here when doing so, but it's always a good to have the correct tool for the job. Funny how just seeing a number come up on a dial can make you feel so much more confident in a job well done, even tho you wouldn't have done the work any differently without having it to hand.

Cheers!

Install the front iso bracket to the motor before installing the motor to the frame. Much easier that way. Doing it frame first is not advised.

ntst8 said:

If no-one else comes up with an answer i can pull a spindle cover and measure the hole diameter.

Click to expand...

No longer any need. I asked Mr. Comstock himself, and he suggested the precise size of the bore wasn't critical, as long as it is larger than 3mm. He further indicated that he often uses a 3/16" bit for the work. Hope that may be of some use to anyone else considering having the work done. I'd do it myself, but I do not have any confidence I can make the hole straight using just my drill press and vice. So, I will head to my local machine shop to have it done.