BSA B18 custom deluxe

[Kgtime]

The 3 yaw puller worked perfect as posted. I am still waiting on the proper tool to arrive but if anyone needs to remove there clutch without this (custom)tool the 3 jaw puller worked perfect. Yes by the way, the bearing balls will fall every where. No worries the standard SAE sizes work perfect as a replacement. 
Kevin

Sent from my iPad

[Kgtime]

Mark B18
Sorry for the delay I have been out of town. I will get you a nice drawing of the 4 speed shift gate in detail so you can get one custom made. Give me a few days.
Thanks,
Kevin

[militaryron]

Kevin, so your clutch has balls? The M20 clutches have 1/4"x 1/4" rollers. Ron

[Steve.S]

Ron,
Hope I'm not being rude, stepping in to answer your question to Kevin, but yes, it has 40 3/16" balls. Clearly, the M20 is a far more sophisticated design?
They run in a groove machined into the hub. They are held in place by 2 brass rings which have different part numbers.
One is thicker than the other. I have assumed that the thinner one goes on first and would be a normal interference fit.
However, I think the outer one should perhaps be a thumb push fit, as it is not positioned or held in place by the inner steel disc which runs close to it. It seems to me that pre-load/clearance would be important, so I'm surprised that no mention of this is made in the Instruction Book, or have I got this all wrong?
As I said, my outer ring is a bit loose, so I just assemble it as best I can, and it seems to work OK, but I imagine my clutch wobbles more than it should. I've posted about this before, but got no response.
The only problem I have is oil impregnating the inner disc behind the clutch chainwheel, causing it to slip, even though the oiling is turned right down. I'm going to experiment with an automatic transmission disc, and see if that cures it.
Kevin, do let us know if your tool fits, although you will probably have reassembled the clutch by the time you receive it.
Another way to remove the hub, if the ring nut threads are a bit shagged, is to remove the bearing and inner plate, and use a puller behind the hub, but then you have the tedious task of reassembling the 40 balls.

[militaryron]

Well as you probably know Steve, my 6 spring clutches have a similar arrangement of steel balls trapped in two brass rings. I ordered one of Drags ally ring kits for my B30, but it went back as it wouldn't fit on any of the 5 clutches I had to choose from I managed to assemble the two brass rings with new balls. Ron

[Steve.S]

Ron,
We seem to be hijacking Kevins original post, which is probably Verboten, so I shall expect a knock at the door.
However, I know nothing of your later clutches, but as far as I can work out they had two (2) one piece ball retainers, already assembled, so it looks like Draganfly modified the design to one double row cage?
It seems the ball retainers fit onto an inner ring with 2 grooves machined in, which is an interference fit onto the clutch sleeve.
If I've got this right, it seems a far better arrangement, with no need for adjustment of the bearing.
However, I can't quite work out what 65-3912 Ballrace ring is. Is it a hardened ring fitted to the chainwheel for the bearing to run on? It looks rather too narrow for that. Perhaps it's just a spacer?
I can't quite see where the rollers you mention come into it?  Perhaps BSA modified the arrangement for later clutches?

[militaryron]

I'm sure Kevin won't mind, we are sort of on topic and all learning different things.

Here is the M20 clutch showing the rollers #65 x22.  Ron

[Steve.S]

So where are the balls?

[militaryron]

We're at cross purposes here Steve. You asked about the rollers. The only rollers I mentioned are in the M20 clutch.

Otherwise this is the type of 6 spring clutches I have.  Ron

[Steve.S]

As Bob says, I'll get me coat.

[Kgtime]

This is a post reply for Mark B18 regarding a request for a shift pattern on a 1936 BSA B18 4-speed shift gate.
I attached 2 drawings one with and one without dimensions. I hope this helps you.
Thanks,
 

[Kgtime]

This is a post reply for Mark B18 regarding a request for a shift pattern on a 1936 BSA B18 4-speed shift gate.
I attached 2 drawings one with and one without dimensions. I also converted it to a photo for ease of viewing.