How not to B33!

[Steve.S]

My dear Fellow,
As I suggested in a previous post, your half time pinion is shagged out. Also, from the photo, there is insufficient clearance between the inlet pinion and the idler pinion. You seem not to be concerned about this.
Does anyone else agree?

[neil1964]

I thought Dan replaced these?

[Dan_B33]

Hello Steve ,
You are totally right.
An yes I have neglected that , takin that as a less burning issues.
So I have to source : half time pinion, idler pinion (for sure this one has a lot of play)

Thanks for recalling

[Dan_B33]

Looks like inlet cam ...might need replacing as well

[Steve.S]

Good Man. That should quieten down your cams.

[Dan_B33]

I have now two weeks outside country. Plenty of time to browse e bay.
I have half time pinion from AS spares. Brand new but needs machine work ...too tight.
I guess with idler pinion better is NOS than second hand, right?
Same with cams, right?

Dan

[Dan_B33]

One question this New half time pinion has deep groove for the key an original one has swallow...would that make any difference? I guess I need to make new key anyway?

[neil1964]

NOS (ie from proven BSA source) is always best, followed by good original used, followed by new replica parts.

I have found that so much replica stuff is substandard and does not fit when first offered up.  When you are talking about such fundamental things as crank pinions and oil pump drives good used is always preferable to unverified (and non-warrantied) new parts.  If it needs fettling to fit you then start to worry about materials (too soft, too brittle etc).

[Dan_B33]

Hello,
Thanks for that advise Neil!
By any chance you could share idler pionin parameters
Mine is really worn especially on the bush.
So ideal would.be what is that inner braz bush size (fi).
Width of pinion? How may teeth?

Cheers
Dan

[Dan_B33]

Just to add I'm far fro my garage till 16th but could see some parts on eBay UK. If someone shares the measurements I could buy already now

[Dan_B33]

If idler pinion ID :18.57mm would make good clearance or it is too lose?

[Dan_B33]

Hello, small update.
All pinions sourced in UK eBay.
Second hand ...used.
We'll see if any better than what I have.
Still on holiday....

Cheers

[Dan_B33]

Hello,
Parts are in UK waiting to be shipped to me.
Currently I'm o stripping left plunger to fix broken chain adjuster bolt (no head...and just piece left to grab or weld in.)

I had to grind the part of a bolt which was in the axle hole (bean hole where tej axle goes) since it was in shape of a mushroom 🍄 head....

[Dan_B33]

Hello,
That is fixed now!
Strippin the plunger I gave discovered that one of spring covers has a rather large dent. Part number 89-4249.
All on the market are chromed new ones.
I'm after second hand rusty one. Anyone has in stock to sell?

[Dan_B33]

Hello,
Small update. Front forks are mess!
One has deep scratches.
Other not so bad but some....but bigger play on the braz bush...
Looks like I need new forks ...changing bushes and seals would be just a waste. Aghhh!