Ausmini
It is currently Mon Jul 07, 2025 5:03 am

Board index » Mini Chat » Mini Chat

All times are UTC + 10 hours




Post new topic Reply to topic  Page 1 of 2
  [ 22 posts ]  Go to page 1, 2  Next
  Print view Previous topic | Next topic 
Author Message
IndigoBlueCooperS
 Post subject: Police Spec Seat Mod
PostPosted: Wed Apr 01, 2020 1:42 pm 
Offline
998cc
998cc

Joined: Sun Nov 06, 2005 5:41 pm
Posts: 860
Location: Adelaide
Looking at modifying some standard front seats as per that done for the police cars.
This is to suit a low roof line (about 3 inches) not for a tall stature with cap on.

Was the only mod the removal of 1" from the rear supports?
Was it 1", or more or less?
Were there any modes to the front of the seats / brackets or was this left standard.

Thanks to viperrwk for the photo.
Seat on the right has the lowered rear support or legs.
Seat on the left has been shortened and then extended.


You do not have the required permissions to view the files attached to this post.

Top
 Profile  
 
gtogreen1969
 Post subject: Re: Police Spec Seat Mod
PostPosted: Wed Apr 01, 2020 2:36 pm 
Offline
1275cc
1275cc
User avatar

Joined: Fri May 02, 2008 3:07 pm
Posts: 5123
Location: The Internet
Does this help?

Attachment:
Police Cooper S lowered Seats.jpg


You do not have the required permissions to view the files attached to this post.

Top
 Profile  
 
winabbey
 Post subject: Re: Police Spec Seat Mod
PostPosted: Wed Apr 01, 2020 2:48 pm 
Offline
1360cc
1360cc
User avatar

Joined: Wed Oct 03, 2007 9:04 pm
Posts: 6744
Location: Melbourne, VIC
For pre-1971 seats that don't have the mechanism to anchor the rear of the seat to the floor the only modification was the removal of about 1.5" from the tube, bending the tube so the two ends meet and welding the two ends together. No change was made to the mounting bracket.

This is part of engineering drawing HYA7267 for the modification to create a Special Production Order 16 lowered seat. The measurement for the length to be removed is indistinct but I've calculated it to be approx. 1.5" by comparing two seats. Shown in the drawing is the approx position where the tube is to be reformed by bending.

Ignore the other diagrams and comments as they relate to the later ADR compliant seat frames.

Attachment:
HYA7267 Rework Front Seat Frame Assembly SPO16 subset wm.jpg


You do not have the required permissions to view the files attached to this post.

_________________
ex-NSW Police 1970 MK II Cooper S
VMCI #43
Top
 Profile  
 
gtogreen1969
 Post subject: Re: Police Spec Seat Mod
PostPosted: Wed Apr 01, 2020 3:10 pm 
Offline
1275cc
1275cc
User avatar

Joined: Fri May 02, 2008 3:07 pm
Posts: 5123
Location: The Internet
winabbey wrote:
For pre-1971 seats that don't have the mechanism to anchor the rear of the seat to the floor the only modification was the removal of about 1.5" from the tube, bending the tube so the two ends meet and gas welding the two ends together. No change was made to the mounting bracket.

This is part of engineering drawing HYA7267 for the modification to create a Special Production Order 16 lowered seat. The measurement for the length to be removed is indistinct but I've calculated it to be approx. 1.5" by comparing two seats. Shown in the drawing is the approx position where the tube is to be reformed by bending.

Ignore the other diagrams and comments as they relate to the later ADR compliant seat frames.

Attachment:
HYA7267 Rework Front Seat Frame Assembly SPO16 subset wm.jpg


Nice one Doug.
Top
 Profile  
 
IndigoBlueCooperS
 Post subject: Re: Police Spec Seat Mod
PostPosted: Wed Apr 01, 2020 3:39 pm 
Offline
998cc
998cc

Joined: Sun Nov 06, 2005 5:41 pm
Posts: 860
Location: Adelaide
Excellent info guys.
Now all I need to do is find a pair of seats to modify.
Thanks again.
Top
 Profile  
 
eightfifty
 Post subject: Re: Police Spec Seat Mod
PostPosted: Wed Apr 01, 2020 7:23 pm 
Offline
848cc
848cc

Joined: Thu Apr 07, 2016 10:07 pm
Posts: 379
-


Last edited by eightfifty on Thu Sep 29, 2022 12:31 pm, edited 1 time in total.

Top
 Profile  
 
winabbey
 Post subject: Re: Police Spec Seat Mod
PostPosted: Wed Apr 01, 2020 8:07 pm 
Offline
1360cc
1360cc
User avatar

Joined: Wed Oct 03, 2007 9:04 pm
Posts: 6744
Location: Melbourne, VIC
eightfifty wrote:
Doug is showing his computer science background here. The tube has to be mig welded together, not gas welded.

Ha ha, no, I'm showing my reading skills. :) The BMC drawing says to gas weld (I assume that's what "CO2 weld" means)?. I'm not a welder so I wouldn't know which is best today. Did they have MIG back in the mid-sixties?

_________________
ex-NSW Police 1970 MK II Cooper S
VMCI #43
Top
 Profile  
 
winabbey
 Post subject: Re: Police Spec Seat Mod
PostPosted: Wed Apr 01, 2020 8:10 pm 
Offline
1360cc
1360cc
User avatar

Joined: Wed Oct 03, 2007 9:04 pm
Posts: 6744
Location: Melbourne, VIC
Also, the rework was done on the bare frame so no issue with adjoining trim being affected. Would all the trim have to be removed if making this mod on a complete seat?

_________________
ex-NSW Police 1970 MK II Cooper S
VMCI #43
Top
 Profile  
 
eightfifty
 Post subject: Re: Police Spec Seat Mod
PostPosted: Wed Apr 01, 2020 8:17 pm 
Offline
848cc
848cc

Joined: Thu Apr 07, 2016 10:07 pm
Posts: 379
-


Last edited by eightfifty on Thu Sep 29, 2022 12:31 pm, edited 1 time in total.

Top
 Profile  
 
winabbey
 Post subject: Re: Police Spec Seat Mod
PostPosted: Wed Apr 01, 2020 8:53 pm 
Offline
1360cc
1360cc
User avatar

Joined: Wed Oct 03, 2007 9:04 pm
Posts: 6744
Location: Melbourne, VIC
This is in a corner of the drawing.

Attachment:
HYA7267 Rework Front Seat Frame Assembly SPO16 welding subset.jpg


The BMC Standard YMP215 for welding covers 59 pages so it's quite extensive as you'd imaging for a manufacturer primarily welding sheet metal together, adding a powerplant and putting it in the hands of the general public.

Here's the intro page to YMP215.

Attachment:
Page D_W1_1 Welding Standard YMP215.jpg


You do not have the required permissions to view the files attached to this post.

_________________
ex-NSW Police 1970 MK II Cooper S
VMCI #43
Top
 Profile  
 
eightfifty
 Post subject: Re: Police Spec Seat Mod
PostPosted: Wed Apr 01, 2020 9:40 pm 
Offline
848cc
848cc

Joined: Thu Apr 07, 2016 10:07 pm
Posts: 379
-


Last edited by eightfifty on Thu Sep 29, 2022 12:30 pm, edited 1 time in total.

Top
 Profile  
 
winabbey
 Post subject: Re: Police Spec Seat Mod
PostPosted: Wed Apr 01, 2020 9:49 pm 
Offline
1360cc
1360cc
User avatar

Joined: Wed Oct 03, 2007 9:04 pm
Posts: 6744
Location: Melbourne, VIC
I have removed the word gas from my initial post.

_________________
ex-NSW Police 1970 MK II Cooper S
VMCI #43
Top
 Profile  
 
eightfifty
 Post subject: Re: Police Spec Seat Mod
PostPosted: Wed Apr 01, 2020 9:55 pm 
Offline
848cc
848cc

Joined: Thu Apr 07, 2016 10:07 pm
Posts: 379
-


Last edited by eightfifty on Thu Sep 29, 2022 12:30 pm, edited 1 time in total.

Top
 Profile  
 
eightfifty
 Post subject: Re: Police Spec Seat Mod
PostPosted: Thu Apr 02, 2020 7:12 am 
Offline
848cc
848cc

Joined: Thu Apr 07, 2016 10:07 pm
Posts: 379
-


Last edited by eightfifty on Thu Sep 29, 2022 12:29 pm, edited 1 time in total.

Top
 Profile  
 
winabbey
 Post subject: Re: Police Spec Seat Mod
PostPosted: Thu Apr 02, 2020 7:53 am 
Offline
1360cc
1360cc
User avatar

Joined: Wed Oct 03, 2007 9:04 pm
Posts: 6744
Location: Melbourne, VIC
The information provided in this post is purely as an historical reference to what was done by BMC back in the day. It should not be seen as an endorsement, recommendation or any other guidance in modifying a seat or any other vehicle component today.

Richard - I don't consider Tony a "know it all" but he certainly knows a lot about the subject matter and much of what we discuss on this forum. I respect his opinion and believe his comments are in good faith.

_________________
ex-NSW Police 1970 MK II Cooper S
VMCI #43
Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  Page 1 of 2
  [ 22 posts ]  Go to page 1, 2  Next

Board index » Mini Chat » Mini Chat

All times are UTC + 10 hours


Who is online

Users browsing this forum: No registered users and 108 guests

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Jump to:  

© 2016 Ausmini. All garage work involves equal measures of enthusiasm, ingenuity and a fair degree of irresponsibility.