Author Topic: BSA factory tour  (Read 339 times)

Online Minto

  • Resident Legend
  • *****
  • Join Date: Mar 2019
  • Posts: 518
  • Karma: 8
BSA factory tour
« on: 04.07. 2021 10:54 »
Interesting footage of some pre unit twin engines being assembled.
https://youtu.be/XwjubHY2A4s
I say ladies, shouldn't you be at home knitting or baking some kittens?
52 A10 plunger
Aprilia RSVR

Online muskrat

  • Global Moderator
  • Wise & Enlightened
  • **
  • Join Date: Jul 2009
  • Posts: 8920
  • Karma: 113
  • Lithgow NSW Oz
    • Shoalhaven Classic Motorcycle Club Inc
Re: BSA factory tour
« Reply #1 on: 04.07. 2021 20:40 »
G'day Minto
Never had baked kitten *ex*. What do they taste like *????*
 *lol*
Cheers
'51 A7 plunger, '57 A7SS now A10CR,  '83 CB1100F, 88 FXST .
Australia
Muskys Plunger A7

Online Greybeard

  • Jack of all trades; master of none.
  • Wise & Enlightened
  • *
  • Join Date: Feb 2011
  • Posts: 7329
  • Karma: 40
Re: BSA factory tour
« Reply #2 on: 04.07. 2021 23:13 »
G'day Minto
Never had baked kitten *ex*. What do they taste like *????*
 *lol*
Cheers
KitKat
Greybeard (Neil)
1955 Golden Flash, sprung frame
Supporter of THE DISTINGUISHED GENTLEMAN'S RIDE https://www.gentlemansride.com

Warwickshire UK


A Distinguished Gentleman Riding his 1955 Plunger Golden Flash

Online mikeb

  • Resident Legend
  • *****
  • Join Date: Dec 2014
  • Posts: 697
  • Karma: 13
Re: BSA factory tour
« Reply #3 on: 05.07. 2021 01:42 »
the guy with the hammer didn't waste any time checking the crank end float, and hammered in the drive side bearing first before fitting the timing side case. anyone know what is the thinking here? its the opposite of all the threads in this forum.
New Zealand
'61 Super Rocket  - '47 B33 -  '18 Triumph Street Triple RS

Online RichardL

  • Outside Chicago, IL
  • Wise & Enlightened
  • *
  • Join Date: Nov 2007
  • Posts: 5589
  • Karma: 52
Re: BSA factory tour
« Reply #4 on: 05.07. 2021 04:04 »
G'day Minto
Never had baked kitten *ex*. What do they taste like *????*
 *lol*
Cheers

Muskrat.
Plan on signing up for the world-wide 2020 DISTINGUISHED GENTLEMAN'S RIDEon September 27, 2020. This year it's a solo or pillion ride in dapper attire. Watch website at https://www.gentlemansride.com for details.


Offline Swarfcut

  • Wise & Enlightened
  • *
  • Join Date: Oct 2018
  • Posts: 1632
  • Karma: 32
Re: BSA factory tour
« Reply #5 on: 05.07. 2021 11:10 »
 The precision tool there is known as a "Brummie Screwdriver"  As with any volume production the cranks were machined to a high uniform standard, the castings machined likewise and  batch graded for assembly. Otherwise as this is a publicity exercise, the fine selective assembly we all treasure was omitted in this case, simply for artistic licence.

 Swarfy.

Online BSA_54A10

  • Wise & Enlightened
  • *
  • Join Date: May 2008
  • Posts: 2167
  • Karma: 34
    • BSA National
Re: BSA factory tour
« Reply #6 on: 06.07. 2021 09:05 »
Firstly
I find it amazing that none of us would have a bar of buying stolen BSA parts or offer any support to those who do steal them
Yet we are quite happy to indulge in property thieft on line.
The footage is a small part of a 15 minute long newsreel about BSA owned by British Pathe' who spent a small fortune digitizing it so we can enjoy it
So Matt is nothing more than a thief peddleing stolen goods on Face book for his own greedy personal gain thus depriving British Pathe' of internet traffic which of course will discourage them from digitizing other BSA material they hold so we can enjoy it .
The entire 15 minutes should be available from British Pathe https://www.britishpathe.com/video/b-s-a-factory
And I think it was originally released digitally back in 1999 and has been linked to in this forum before .

Now as to the small section of content Matt the thief posted without any acknowledgement of the owners .
BSA batched parts manufacture was done in batches
They were made on production lines by process workers, not highly skilled machinists
As they came off the machine they were graded using go / no-go gauges
The parts were then stamped according to the gauge that they fitted so when assembled they could be married to the parts that gave the best fit.
These are all those tiny little stampings we see all over our engines and cause so many ulcers to owners who can not accept that they have no special meaning.
And this has been done to death on here as well .
Those of you who have done any machining know that tools get blunt or get a build up if you are machining alloy.
This changes the actual dimensions of EVERY part so no two are actually identical thus the need to gauge & match parts.
Then there is the heat effect
The length of seel to be machined into axels dragged into the unheated factory in the middle of winter will be very cold and thus SMALLER.
If machining does not generate enough heat to expand the steel to ambient temperature the finished axel will be the correct size when it is -5 C outside but oversize when at + 40 C in my shed .
As the tools get hotter they get longer so machine undersize till the wear is equal to the expansion .

Now days machining is done by a computer which controls the movement of the tooling while monitoring for tool wear & temperature variations in real time and makes real time adjustments .
Back then nothing happened till Polly the process worker noticed that too many parts were out of gauge so she hit the stop button which signalled for Tom the toolsetter to come & make djustments to the machine or sharpen the tooling & readjust  to suit .

If yo make the effort to find the complete version, which starts out with some employees at the BSA picnic day then goes on to show what each person  does in the factory note how the pistons are wound up into the barrels at 100 sets an hour .
One of the early jobs for the mill when commissioned will be to make some of those piston clamps
Bike Beesa
Trevor

Online Minto

  • Resident Legend
  • *****
  • Join Date: Mar 2019
  • Posts: 518
  • Karma: 8
Re: BSA factory tour
« Reply #7 on: 06.07. 2021 10:32 »
Trev
Apologies toBritish Pathe, my intention in re-posting this clip was certainly not malicious or dishonest. I would have never known that this film existed had it not been suggested when I put a "BSA" search into YouTube, and I suspect likewise for many others so the likelihood of specifically looking for it at Pathe or anywhere else would be unlikely, but I consider myself told and will refrain from re posting this kind of thing in future.
As for the rest of your post, that's very informative and interesting, I'll maybe watch the entire film (thanks for the link).
Personally I have done no machining since metalwork class at school, but that makes sense re tooling wear and temperature, hadn't really considered that being just a bloke who likes messing about in his shed.
Cheers, I'm off to watch the rest of it.
Jase
52 A10 plunger
Aprilia RSVR

Online Minto

  • Resident Legend
  • *****
  • Join Date: Mar 2019
  • Posts: 518
  • Karma: 8
Re: BSA factory tour
« Reply #8 on: 06.07. 2021 19:54 »
Tried to locate this earlier, sadly it seems only available to those more interweb savvy than me.  *sad2*
52 A10 plunger
Aprilia RSVR

Online RichardL

  • Outside Chicago, IL
  • Wise & Enlightened
  • *
  • Join Date: Nov 2007
  • Posts: 5589
  • Karma: 52
Re: BSA factory tour
« Reply #9 on: 06.07. 2021 20:49 »
Trev
Apologies toBritish Pathe, my intention in re-posting this clip was certainly not malicious or dishonest.

Jase,

I don't think you owe an apology. I actually thought Trev was being tongue-in-cheek. You didn't re-post anything that wasn't already here. I went looking for the video on British Pathe's website and YouTube channel. Granted, I didn't have all day to look, but couldn't find it to license or otherwise. It may even be in the public domain. Maybe Trev knows otherwise. In any case, Jase, only if you had a way to know it was copywritten would any authority hold you accountable. Matt (whoever he may be), on the other hand, may have some 'splainin' to do. On the other, other hand, now that Trev has suggested that it may be copywritten and we could have reason to believe it, re-re-posting without checking it out first might be an issue. To be clear, I'm not a lawyer, but I don't think there is any need to rush to scrub the forum of all traces, but that is above my pay grade.



Richard L.

Plan on signing up for the world-wide 2020 DISTINGUISHED GENTLEMAN'S RIDEon September 27, 2020. This year it's a solo or pillion ride in dapper attire. Watch website at https://www.gentlemansride.com for details.


Online RDfella

  • Wise & Enlightened
  • *
  • Join Date: Aug 2017
  • Posts: 1399
  • Karma: 12
Re: BSA factory tour
« Reply #10 on: 06.07. 2021 20:53 »
Doesn't bother me - couldn't open it anyway - but for those who could, seems the guy did a service, bringing it to people's attention.
'49 B31, '49 M21, '53 DOT, '58 Flash, '00 Firestorm, Weslake sprint bike.

Online chaterlea25

  • Wise & Enlightened
  • *
  • Join Date: Jun 2009
  • Posts: 3586
  • Karma: 50
Re: BSA factory tour
« Reply #11 on: 06.07. 2021 21:30 »
Hi All,
I could only get a short clip with Trev's link but it shows that it is copyright

John
1961 Super Rocket
1963 RGS (ongoing)

Online berger

  • Wise & Enlightened
  • *
  • Join Date: Nov 2017
  • Posts: 1724
  • Karma: 12
  • keith.uk 500sscafe.norbsa project,honda 750fz
Re: BSA factory tour
« Reply #12 on: 07.07. 2021 00:15 »
helloooooo, i watched it and there's four parts by matty boy, will i get into trouble for watching all four mister, i better go to the naughty step and miss my tea *contract* *help* *warn*

Online BSA_54A10

  • Wise & Enlightened
  • *
  • Join Date: May 2008
  • Posts: 2167
  • Karma: 34
    • BSA National
Re: BSA factory tour
« Reply #13 on: 07.07. 2021 09:27 »
It was open for a while, can not remember when I first saw it but probably when I was at Carlingford which was at least 10 years ago.
When people do illegal downloads of any material it is a bit of a problem but not as much as when some one posts it to their You tube channel so profit from stealing it.
The content owners like British Pathe remove it from their free viewing section and we all loose.
There is a similar Triumph one and an AMC ? at Plumsted Road one.
That is facinating as it shows exactly why they went broke by following a motorcycle from being delivered as steel stock to leaving the front gate for road testing on public streets ( unregistered untaxed & uninsured )
The bike would have done 100 miles going up in lifts, under the road in tunnels than back across the road on a bridge , up to the roof across & down to the basement etc etc etc  .
They would have needed 100 staff just to push the bikes around .
BSA at least finally recognised that trying to shoe horn motorcycle assembly lines into building built to a size specifically for making small arms was not a good idea and was adding hundreds of pounds to the final cost of their bikes.
If the block heads in charge had allowed all assembly to happen at the new Coventry plant then there is a good chance that BSA would still be making bikes today.
Bike Beesa
Trevor

Online Greybeard

  • Jack of all trades; master of none.
  • Wise & Enlightened
  • *
  • Join Date: Feb 2011
  • Posts: 7329
  • Karma: 40
Re: BSA factory tour
« Reply #14 on: 07.07. 2021 16:14 »
There is a fab video on YouTube showing Rover Imperial motorbikes being built and then road tested. I recognise some of the locations in the movie; they are a few miles from my home and have hardly changed.
I don't know who would own the rights to this. I've just been fruitlessly trying to find a legal way of watching the video.

https://youtu.be/6m8PmMQK76s
Greybeard (Neil)
1955 Golden Flash, sprung frame
Supporter of THE DISTINGUISHED GENTLEMAN'S RIDE https://www.gentlemansride.com

Warwickshire UK


A Distinguished Gentleman Riding his 1955 Plunger Golden Flash