Lotus Elan

Elan Sprint/S4 seatbelt position.

PostPost by: Bahamayellow » Sun Jun 21, 2020 8:10 pm

Hi I have put on a previous post on removing my roll cage which has been done and many thanks for the advice on getting the lower sill bars removed.

I have located the two bottom seatbelt mounting points but not the rear upper ones every search I do shows Plus 2 mounting positions. The logical place is the far rear corners where there are two holes and I’ve made up two safety brackets up as there looks nowhere enough strength in the shell around the holes.

I have added photos of where I have positioned these can someone confirm these are correct before I fibreglass the mounting point in. Sorry I can’t get the photo to sit vertically.

Many thanks

Mike

140B3576-0C61-4ED1-905A-22C7F5C90336.jpeg and
Mike
1971 Lotus Elan Sprint
1963 1071 Cooper S
Bahamayellow
Second Gear
Second Gear
 
Posts: 87
Joined: 12 May 2009
Location: Staffordshire

PostPost by: oldelanman » Sun Jun 21, 2020 8:47 pm

The upper attachment is via a special bolt through the fibreglass to an outrigger bracket on the top of the suspension tower, it does not bolt directly to the fibreglass. All the necessary parts are available from the usual suppliers in the UK.
Seat belt top mount 005.jpg and

Elan-Parts-AA.jpg and
X036B0398Z.jpg and
SJ036B0083.jpg and
Last edited by oldelanman on Sun Jun 21, 2020 8:53 pm, edited 1 time in total.
Roger
S4 DHC
oldelanman
Coveted Fifth Gear
Coveted Fifth Gear
 
Posts: 1648
Joined: 02 Jan 2008
Location: Dorset UK

PostPost by: rgh0 » Sun Jun 21, 2020 8:52 pm

The top of the strut originally had a bracket sandwiched under the Lotocones and a special bolt that screwed into the bracket and ran forward through the holes you found. The special bolt had a square head with a threaded hole in it for the seatbelt bolt to go into.

I doubt your plate would hold in a significant accident.


cheers
Rohan
User avatar
rgh0
Coveted Fifth Gear
Coveted Fifth Gear
 
Posts: 7474
Joined: 22 Sep 2003
Location: Melbourne, Australia

PostPost by: Bahamayellow » Mon Jun 22, 2020 12:08 am

Rohan thanks for that I was worried that this was not sufficient.

Mike
Mike
1971 Lotus Elan Sprint
1963 1071 Cooper S
Bahamayellow
Second Gear
Second Gear
 
Posts: 87
Joined: 12 May 2009
Location: Staffordshire

PostPost by: Bahamayellow » Mon Jun 22, 2020 12:13 am

oldelanman wrote:The upper attachment is via a special bolt through the fibreglass to an outrigger bracket on the top of the suspension tower, it does not bolt directly to the fibreglass. All the necessary parts are available from the usual suppliers in the UK.
Seat belt top mount 005.jpg

Elan-Parts-AA.jpg
X036B0398Z.jpg
SJ036B0083.jpg


Thank you for the advice It is much appreciated.

Mike
Mike
1971 Lotus Elan Sprint
1963 1071 Cooper S
Bahamayellow
Second Gear
Second Gear
 
Posts: 87
Joined: 12 May 2009
Location: Staffordshire

PostPost by: Bushwacker » Mon Jun 22, 2020 12:19 am

Hello Roger,
I am looking to retrofit this bracket arrangement to my S3 FHC. From your photo, it appears that the fiberglass in the area of the special square bolt takes a jog toward the outside of the car to make room for the bolt. There is then a rubber grommet to seal up around the bolt. Is this correct? I recently did a dry test fit of the mounting brackets to the rear chassis towers to locate where the hole should be and found that they go right at the corner where the wheel arch meets the rear bulkhead across the car. If the glass does indeed have relief space for the bolt arrangement, I will need to do some modifications to my body shell.

Thanks for posting the photos as I was just doing a search about this topic earlier today.

Eric
Life's too short to drive boring cars!
'66 S3 Elan Coupe'
Bushwacker
First Gear
First Gear
 
Posts: 16
Joined: 20 Jul 2012
Location: St.Louis,MO,USA

PostPost by: Lotusian » Mon Jun 22, 2020 5:49 am

I listed a pair of mounting plates on eBay a few days ago https://www.ebay.co.uk/itm/303598047801
Lotusian
New-tral
 
Posts: 14
Joined: 27 Nov 2016
Location: Essex UK

PostPost by: oldelanman » Mon Jun 22, 2020 6:18 am

Hi Eric,
Sounds like you may have the mounting brackets for an S4 ... the S3 brackets are a little shorter. SJ Sportscars in the UK list both brackets and I expect the other suppliers have them too. I don't think the parts list shows the change !

https://www.sjsportscars.com/parts-and- ... rchresults

Screenshot (25).png and


There are a couple of spacers on the shaft of the fixing bolt and the rubber grommet seals on those.
Seat belt upper fixing.jpg and
Roger
S4 DHC
oldelanman
Coveted Fifth Gear
Coveted Fifth Gear
 
Posts: 1648
Joined: 02 Jan 2008
Location: Dorset UK

PostPost by: oldelanman » Mon Jun 22, 2020 6:26 am

Lotusian wrote:I listed a pair of mounting plates on eBay a few days ago https://www.ebay.co.uk/itm/303598047801


S3 or S4 ?
Roger
S4 DHC
oldelanman
Coveted Fifth Gear
Coveted Fifth Gear
 
Posts: 1648
Joined: 02 Jan 2008
Location: Dorset UK

PostPost by: Lotusian » Mon Jun 22, 2020 7:14 am

oldelanman wrote:
Lotusian wrote:I listed a pair of mounting plates on eBay a few days ago https://www.ebay.co.uk/itm/303598047801


S3 or S4 ?


Hello oldelanman

Taken from the damaged LR galvanised chassis fitted to my S4, but, judging by your earlier post, they must be the slightly shorter S3 version. NOW I understand why there were two sets of holes in my rear bulkhead - original outer ones (covered up) to suit the S4 brackets/plates which must have rusted away, plus inner ones to suit the S3 plates fitted when the chassis was replaced.
I now have a Spyder “stressed skin” (ie Lotus replica, but better) chassis with the mounting brackets/plates welded as part of the structure.
Lotusian
New-tral
 
Posts: 14
Joined: 27 Nov 2016
Location: Essex UK

PostPost by: oldelanman » Mon Jun 22, 2020 7:43 am

Lotusian wrote:
oldelanman wrote:
Lotusian wrote:I listed a pair of mounting plates on eBay a few days ago https://www.ebay.co.uk/itm/303598047801


S3 or S4 ?


Hello oldelanman

Taken from the damaged LR galvanised chassis fitted to my S4, but, judging by your earlier post, they must be the slightly shorter S3 version. NOW I understand why there were two sets of holes in my rear bulkhead - original outer ones (covered up) to suit the S4 brackets/plates which must have rusted away, plus inner ones to suit the S3 plates fitted when the chassis was replaced.
I now have a Spyder “stressed skin” (ie Lotus replica, but better) chassis with the mounting brackets/plates welded as part of the structure.


It might be helpful to others in future if we post up the dimensions of the two brackets. I believe the only difference between the two is the horizontal outer section after the bend. A spare S4 (longer) bracket I have measures 60 mm from bend to centre of threaded hole ..maybe you could measure your S3 bracket and post it here too?

S4 bracket.jpg and
Roger
S4 DHC
oldelanman
Coveted Fifth Gear
Coveted Fifth Gear
 
Posts: 1648
Joined: 02 Jan 2008
Location: Dorset UK

PostPost by: Lotusian » Mon Jun 22, 2020 11:36 am

Bend to threaded hole centre on the S3 version is 40mm
Lotusian
New-tral
 
Posts: 14
Joined: 27 Nov 2016
Location: Essex UK

PostPost by: pharriso » Mon Jun 22, 2020 2:53 pm

Bushwacker wrote:Hello Roger,
From your photo, it appears that the fiberglass in the area of the special square bolt takes a jog toward the outside of the car to make room for the bolt. There is then a rubber grommet to seal up around the bolt. Is this correct?
Eric


Eric, you are correct. On my Federal Sprint with Inertia belts on one side the relief was not large enough for the Belt bracket to rotate freely so I had to re-glass the area:
IMG_3584.JPG and
RHS OK

IMG_3592.JPG and
Looks like a factory patch to enlarge the area?

IMG_3602.JPG and
LHS, after my re-glassing

UK cars with Static belts may not need as much space for the belts.
Phil Harrison
1972 Elan Sprint 0260K
User avatar
pharriso
Coveted Fifth Gear
Coveted Fifth Gear
 
Posts: 2719
Joined: 15 Sep 2010
Location: Long Island NY, USA

PostPost by: MarkDa » Mon Jun 22, 2020 10:34 pm

Given the inherent difficulty of operating the handbrake when wearing a firmly tightened static belt I have considered installing inertia belts.
How/ where are the reels fastened please?
MarkDa
Coveted Fifth Gear
Coveted Fifth Gear
 
Posts: 1114
Joined: 15 Apr 2017
Location: Stroud

PostPost by: pharriso » Mon Jun 22, 2020 10:49 pm

MarkDa wrote:Given the inherent difficulty of operating the handbrake when wearing a firmly tightened static belt I have considered installing inertia belts.
How/ where are the reels fastened please?
.

You can see where Lotus mounted the inertia reel in my last picture, down low attached to to a reinforcement plate. There is also a reinforcement bar running between the reel mount & the top shoulder mount to stop it collapsing in an untoward event. :roll:

People talk well abount the Spyder inertia reel conversion (http://www.spydercars.co.uk/lotus-elan-2-rear-spring-conversion-kit/ but I am not sure if this fits all cars, or just cars with the Spyder chassis conversion.

Spyder fit the Securon 500-30 or 514-30 seat belts, which are a near match to the original Kangols.
Securon_500_30.jpg and
Phil Harrison
1972 Elan Sprint 0260K
User avatar
pharriso
Coveted Fifth Gear
Coveted Fifth Gear
 
Posts: 2719
Joined: 15 Sep 2010
Location: Long Island NY, USA
Next

Total Online:

Users browsing this forum: Pastapesto and 25 guests