Rethread the timing cover oil feed banjo

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Rohan said:
This is about as useful to someone looking for a bolt as your lawyer at sea with a handful of bolts he can't identify.
Click to expand...

It's nothing to do with identifying bolts! All I can do is refer you back to the post containing the BS 84 information in the hopes that if you read it again, it might eventually begin to sink in.


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Rohan said:
(Brit Cycle Thread is all 26 tpi)
Click to expand...

No, it isn't: http://www.motalia.com/Html/Charts/cycle_chart.html
 
You seem stuck in a groove LAB, for whatever reason.
Whitworth bolts ARE NOT BSF bolts, although the threadform is the same.
(We all know Whitworth and BSF Standards on paper.)
I made some of the BSF headbolts for my AJS, since they seemed unobtanium at the time.
Same lathe settings as cutting whitworth bolts.

I probably have 80 pages of different threads in my loose leaf folder, although 70 are somewhat less common.
That why I laughed about lumping Cycle Thread in with that group.

Its the practical aspects of holding a bolt in your hand.
So how does one put this "threadform" bizzo into practical use ?

The challenge is to identify the 3 threadforms shown here.
https://s9.postimg.org/wt43r16lr/same_t ... _or_no.jpg
 
Rohan said:
Blimey, I think we have some clarity sneaking into here...

L.A.B. said:
NOBODY said they were.
Click to expand...

Rohan said:
Whitworth bolts ARE NOT BSF bolts
Click to expand...
Click to expand...

It must be getting clearer at your end then.

Just to go over it again one final time.

BSW is Whitworth thread form.
BSF is also Whitworth thread form.

British Standard BS 84:1956

"Parallel screw threads of Whitworth form"

1 Scope
This British Standard relates to parallel screw threads, having the Whitworth form of thread, used for
general engineering purposes. It is not intended to apply to threaded pipe joints, screw threads associated
with interference fits, such as those on the “metal-ends” of studs and in the corresponding tapped holes, or
to screw threads which are subject to high temperature.
This standard includes:
a) A coarse thread series, the British Standard Whitworth (B.S.W.) Series, from 1/8 in. to 6 in. diameter.
b) A fine thread series, the British Standard Fine (B.S.F.) Series, from 3/16 in. to 4 1/4 in. diameter.
Click to expand...
 
Unless I've missed something this is what's going on here;

Rohan reads dynodaves pages, reads 'threadform' and and interprets it is as 'thread' then having grasped the wrong end of the stick , proceeds to beat about the bush, upsetting all and sundry. Rohan your best bet is to step back and admit it. Or carry on entertaining the rest of us non combatants..
 
I blocked Rohan ages ago.

The answer to the question was in the first couple of posts.

The rest was just a troll.

He should be banned.
 
Clanger said:
Unless I've missed something this is what's going on here;

Rohan reads dynodaves pages, reads 'threadform' and and interprets it is as 'thread' then having grasped the wrong end of the stick , proceeds to beat about the bush, upsetting all and sundry. Rohan your best bet is to step back and admit it. Or carry on entertaining the rest of us non combatants..
Click to expand...

Here I am alone carrying on the fight with ingorance and evil, and look what I get. !!

The problem here was always that some of the combatants never clearly differentiated where they were coming from, never mind that threadforms and thread types seemed to merge into the discussion.

I had this "discussion" with DynoDave previously, when he had less details on his page on heads, and more errors included. He told me I was 'wrong', and banned me from the Model 7 group into the bargain - without advising me either. I note he has subsequently corrected a number of the errors I pointed out, although not all,
and implemented my suggestions on thumbnails and reduced pic sizes.
 
dennisgb said:
I blocked Rohan ages ago.
The answer to the question was in the first couple of posts.
The rest was just a troll.
He should be banned.
Click to expand...

Yes, we've noticed your tendency to prefer silence rather than finding out stuff.
And only posting after the event.
Post something useful sometime ?
 
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