C15 primary chain case level advice

[Spaceman]

I have a natural dislike towards anything that deposits oil on to a rear chain and believe I have removed these devices from every BSA I have restored (I will check later). Once removed, you ideally need to use a sealing washer and dome nut in place although some people will simply use a washer and nut. At the very minimum, you should feel a nut of some kind on the end of the rear chaincase screw otherwise there is usually nothing for it to screw into!

[rhyatt]

https://draganfly.co.uk/wp-content/uploads/2020/08/400330-scaled.jpg

[rhyatt]

Picture of oiler

[B Murphy]

I drained all the oil out of one of my C15's all together, I was fed up with the puddle of oil on the floor. I just lubricated it every now and then, and yes a dry clutch which worked without any issue.

[Chr is]

I drained all the oil out of one of my C15's all together, I was fed up with the puddle of oil on the floor. I just lubricated it every now and then, and yes a dry clutch which worked without any issue.

Interesting, how long have you been running it like that for?

[B Murphy]

Ran that one for over five years until I sold it and he still rides it dry with the occasional lubrication 4 years later.

[Chr is]

Picture of oiler

Thanks.

I defiantly don't have anything like that.

The only thing i have on the case around the 3 o'clock mark is in the attached images.

If that's where it's meant to be i guess one of the previous owners messed it up and just put a nut on.

I will manually oil the chain though so its lubricated.

In regards to the hole on the back side of the case (otehrside of the drain hole) i will try and plug it with some RTV silicon so i hopefully it can stop leaking oil over the summer.

Then over the winter can take bits off and rectify all the issues with the bike.

[Spaceman]

The previous owner has simply fitted a nut in place of the chain oiler. As said, this ideally needs a fibre sealing washer and domed nut otherwise oil may still seep out past the thread.

In terms of sealing the drain screw hole, I would first check its length and how much of the threaded hole there is beyond the end of the screw - you probably need at least 1/4". After cleaning out the threaded hole, it may be possible to seal the end of it using a nozzle to squeeze some RTV Silicon into the open end of the hole from underneath the bike with the screw in place.

[Chr is]

The previous owner has simply fitted a nut in place of the chain oiler. As said, this ideally needs a fibre sealing washer and domed nut otherwise oil may still seep out past the thread.

In terms of sealing the drain screw hole, I would first check its length and how much of the threaded hole there is beyond the end of the screw - you probably need at least 1/4". After cleaning out the threaded hole, it may be possible to seal the end of it using a nozzle to squeeze some RTV Silicon into the open end of the hole from underneath the bike with the screw in place.

That's what i was thinking, clean it the best i can then squeeze some in the hole.

I've just bought some so i will try it this evening.

I'll update if it works!